vim.ftp.fu-berlin.de/2015-02-03.vim.ftp.fu-berlin.de.tar/vim.ftp.fu-berlin.de/unix/vim-6.2.tar.bz2/vim-6.2.tar/vim62/src/ex_cmds2.c

C/C++ Source or Header | 2003-05-29 | 128.6 KB | 5,459 lines

/* vi:set ts=8 sts=4 sw=4:
 *
 * VIM - Vi IMproved    by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */

/*
 * ex_cmds2.c: some more functions for command line commands
 */

#include "vim.h"
#include "version.h"

static void    cmd_source __ARGS((char_u *fname, exarg_T *eap));

#if defined(FEAT_EVAL) || defined(PROTO)
static int debug_greedy = FALSE;    /* batch mode debugging: don't save
                       and restore typeahead. */

/*
 * do_debug(): Debug mode.
 * Repeatedly get Ex commands, until told to continue normal execution.
 */
    void
do_debug(cmd)
    char_u    *cmd;
{
    int        save_msg_scroll = msg_scroll;
    int        save_State = State;
    int        save_did_emsg = did_emsg;
    int        save_cmd_silent = cmd_silent;
    int        save_msg_silent = msg_silent;
    int        save_emsg_silent = emsg_silent;
    int        save_redir_off = redir_off;
    tasave_T    typeaheadbuf;
# ifdef FEAT_EX_EXTRA
    int        save_ex_normal_busy;
# endif
    int        n;
    char_u    *cmdline = NULL;
    char_u    *p;
    char    *tail = NULL;
    static int    last_cmd = 0;
#define CMD_CONT    1
#define CMD_NEXT    2
#define CMD_STEP    3
#define CMD_FINISH    4
#define CMD_QUIT    5
#define CMD_INTERRUPT    6

#ifdef ALWAYS_USE_GUI
    /* Can't do this when there is no terminal for input/output. */
    if (!gui.in_use)
    {
    /* Break as soon as possible. */
    debug_break_level = 9999;
    return;
    }
#endif

    /* Make sure we are in raw mode and start termcap mode.  Might have side
     * effects... */
    settmode(TMODE_RAW);
    starttermcap();

    ++RedrawingDisabled;    /* don't redisplay the window */
    ++no_wait_return;        /* don't wait for return */
    did_emsg = FALSE;        /* don't use error from debugged stuff */
    cmd_silent = FALSE;        /* display commands */
    msg_silent = FALSE;        /* display messages */
    emsg_silent = FALSE;    /* display error messages */
    redir_off = TRUE;        /* don't redirect debug commands */

    State = NORMAL;
#ifdef FEAT_SNIFF
    want_sniff_request = 0;    /* No K_SNIFF wanted */
#endif

    if (!debug_did_msg)
    MSG(_("Entering Debug mode.  Type \"cont\" to continue."));
    if (sourcing_name != NULL)
    msg(sourcing_name);
    if (sourcing_lnum != 0)
    smsg((char_u *)_("line %ld: %s"), (long)sourcing_lnum, cmd);
    else
    msg_str((char_u *)_("cmd: %s"), cmd);

    /*
     * Repeat getting a command and executing it.
     */
    for (;;)
    {
    msg_scroll = TRUE;
    need_wait_return = FALSE;
#ifdef FEAT_SNIFF
    ProcessSniffRequests();
#endif
    /* Save the current typeahead buffer and replace it with an empty one.
     * This makes sure we get input from the user here and don't interfere
     * with the commands being executed.  Reset "ex_normal_busy" to avoid
     * the side effects of using ":normal". Save the stuff buffer and make
     * it empty. */
# ifdef FEAT_EX_EXTRA
    save_ex_normal_busy = ex_normal_busy;
    ex_normal_busy = 0;
# endif
    if (!debug_greedy)
        save_typeahead(&typeaheadbuf);

    cmdline = getcmdline_prompt('>', NULL, 0);

    if (!debug_greedy)
        restore_typeahead(&typeaheadbuf);
# ifdef FEAT_EX_EXTRA
    ex_normal_busy = save_ex_normal_busy;
# endif

    cmdline_row = msg_row;
    if (cmdline != NULL)
    {
        /* If this is a debug command, set "last_cmd".
         * If not, reset "last_cmd".
         * For a blank line use previous command. */
        p = skipwhite(cmdline);
        if (*p != NUL)
        {
        switch (*p)
        {
            case 'c': last_cmd = CMD_CONT;
                  tail = "ont";
                  break;
            case 'n': last_cmd = CMD_NEXT;
                  tail = "ext";
                  break;
            case 's': last_cmd = CMD_STEP;
                  tail = "tep";
                  break;
            case 'f': last_cmd = CMD_FINISH;
                  tail = "inish";
                  break;
            case 'q': last_cmd = CMD_QUIT;
                  tail = "uit";
                  break;
            case 'i': last_cmd = CMD_INTERRUPT;
                  tail = "nterrupt";
                  break;
            default: last_cmd = 0;
        }
        if (last_cmd != 0)
        {
            /* Check that the tail matches. */
            ++p;
            while (*p != NUL && *p == *tail)
            {
            ++p;
            ++tail;
            }
            if (ASCII_ISALPHA(*p))
            last_cmd = 0;
        }
        }

        if (last_cmd != 0)
        {
        /* Execute debug command: decided where to break next and
         * return. */
        switch (last_cmd)
        {
            case CMD_CONT:
            debug_break_level = -1;
            break;
            case CMD_NEXT:
            debug_break_level = ex_nesting_level;
            break;
            case CMD_STEP:
            debug_break_level = 9999;
            break;
            case CMD_FINISH:
            debug_break_level = ex_nesting_level - 1;
            break;
            case CMD_QUIT:
            got_int = TRUE;
            debug_break_level = -1;
            break;
            case CMD_INTERRUPT:
            got_int = TRUE;
            debug_break_level = 9999;
            /* Do not repeat ">interrupt" cmd, continue stepping. */
            last_cmd = CMD_STEP;
            break;
        }
        break;
        }

        /* don't debug this command */
        n = debug_break_level;
        debug_break_level = -1;
        (void)do_cmdline(cmdline, getexline, NULL,
                 DOCMD_VERBOSE|DOCMD_EXCRESET);
        debug_break_level = n;

        vim_free(cmdline);
    }
    lines_left = Rows - 1;
    }
    vim_free(cmdline);

    --RedrawingDisabled;
    --no_wait_return;
    redraw_all_later(NOT_VALID);
    need_wait_return = FALSE;
    msg_scroll = save_msg_scroll;
    lines_left = Rows - 1;
    State = save_State;
    did_emsg = save_did_emsg;
    cmd_silent = save_cmd_silent;
    msg_silent = save_msg_silent;
    emsg_silent = save_emsg_silent;
    redir_off = save_redir_off;

    /* Only print the message again when typing a command before coming back
     * here. */
    debug_did_msg = TRUE;
}

/*
 * ":debug".
 */
    void
ex_debug(eap)
    exarg_T    *eap;
{
    int        debug_break_level_save = debug_break_level;

    debug_break_level = 9999;
    do_cmdline_cmd(eap->arg);
    debug_break_level = debug_break_level_save;
}

static char_u    *debug_breakpoint_name = NULL;
static linenr_T    debug_breakpoint_lnum;

/*
 * When debugging or a breakpoint is set on a skipped command, no debug prompt
 * is shown by do_one_cmd().  This situation is indicated by debug_skipped, and
 * debug_skipped_name is then set to the source name in the breakpoint case.  If
 * a skipped command decides itself that a debug prompt should be displayed, it
 * can do so by calling dbg_check_skipped().
 */
static int    debug_skipped;
static char_u    *debug_skipped_name;

/*
 * Go to debug mode when a breakpoint was encountered or "ex_nesting_level" is
 * at or below the break level.  But only when the line is actually
 * executed.  Return TRUE and set breakpoint_name for skipped commands that
 * decide to execute something themselves.
 * Called from do_one_cmd() before executing a command.
 */
    void
dbg_check_breakpoint(eap)
    exarg_T    *eap;
{
    char_u    *p;

    debug_skipped = FALSE;
    if (debug_breakpoint_name != NULL)
    {
    if (!eap->skip)
    {
        /* replace K_SNR with "<SNR>" */
        if (debug_breakpoint_name[0] == K_SPECIAL
            && debug_breakpoint_name[1] == KS_EXTRA
            && debug_breakpoint_name[2] == (int)KE_SNR)
        p = (char_u *)"<SNR>";
        else
        p = (char_u *)"";
        smsg((char_u *)_("Breakpoint in \"%s%s\" line %ld"), p,
            debug_breakpoint_name + (*p == NUL ? 0 : 3),
            (long)debug_breakpoint_lnum);
        debug_breakpoint_name = NULL;
        do_debug(eap->cmd);
    }
    else
    {
        debug_skipped = TRUE;
        debug_skipped_name = debug_breakpoint_name;
        debug_breakpoint_name = NULL;
    }
    }
    else if (ex_nesting_level <= debug_break_level)
    {
    if (!eap->skip)
        do_debug(eap->cmd);
    else
    {
        debug_skipped = TRUE;
        debug_skipped_name = NULL;
    }
    }
}

/*
 * Go to debug mode if skipped by dbg_check_breakpoint() because eap->skip was
 * set.  Return TRUE when the debug mode is entered this time.
 */
    int
dbg_check_skipped(eap)
    exarg_T    *eap;
{
    int        prev_got_int;

    if (debug_skipped)
    {
    /*
     * Save the value of got_int and reset it.  We don't want a previous
     * interruption cause flushing the input buffer.
     */
    prev_got_int = got_int;
    got_int = FALSE;
    debug_breakpoint_name = debug_skipped_name;
    /* eap->skip is TRUE */
    eap->skip = FALSE;
    (void)dbg_check_breakpoint(eap);
    eap->skip = TRUE;
    got_int |= prev_got_int;
    return TRUE;
    }
    return FALSE;
}

/*
 * The list of breakpoints: dbg_breakp.
 * This is a grow-array of structs.
 */
struct debuggy
{
    int        dbg_nr;        /* breakpoint number */
    int        dbg_type;    /* DBG_FUNC or DBG_FILE */
    char_u    *dbg_name;    /* function or file name */
    regprog_T    *dbg_prog;    /* regexp program */
    linenr_T    dbg_lnum;    /* line number in function or file */
};

static garray_T dbg_breakp = {0, 0, sizeof(struct debuggy), 4, NULL};
#define BREAKP(idx)    (((struct debuggy *)dbg_breakp.ga_data)[idx])
static int last_breakp = 0;    /* nr of last defined breakpoint */

#define DBG_FUNC    1
#define DBG_FILE    2

static int dbg_parsearg __ARGS((char_u *arg));

/*
 * Parse the arguments of ":breakadd" or ":breakdel" and put them in the entry
 * just after the last one in dbg_breakp.  Note that "dbg_name" is allocated.
 * Returns FAIL for failure.
 */
    static int
dbg_parsearg(arg)
    char_u    *arg;
{
    char_u    *p = arg;
    char_u    *q;
    struct debuggy *bp;

    if (ga_grow(&dbg_breakp, 1) == FAIL)
    return FAIL;
    bp = &BREAKP(dbg_breakp.ga_len);

    /* Find "func" or "file". */
    if (STRNCMP(p, "func", 4) == 0)
    bp->dbg_type = DBG_FUNC;
    else if (STRNCMP(p, "file", 4) == 0)
    bp->dbg_type = DBG_FILE;
    else
    {
    EMSG2(_(e_invarg2), p);
    return FAIL;
    }
    p = skipwhite(p + 4);

    /* Find optional line number. */
    if (isdigit(*p))
    {
    bp->dbg_lnum = getdigits(&p);
    p = skipwhite(p);
    }
    else
    bp->dbg_lnum = 0;

    /* Find the function or file name.  Don't accept a function name with (). */
    if (*p == NUL
        || (bp->dbg_type == DBG_FUNC && strstr((char *)p, "()") != NULL))
    {
    EMSG2(_(e_invarg2), arg);
    return FAIL;
    }

    if (bp->dbg_type == DBG_FUNC)
    bp->dbg_name = vim_strsave(p);
    else
    {
    /* Expand the file name in the same way as do_source().  This means
     * doing it twice, so that $DIR/file gets expanded when $DIR is
     * "~/dir". */
#ifdef RISCOS
    q = mch_munge_fname(p);
#else
    q = expand_env_save(p);
#endif
    if (q == NULL)
        return FAIL;
#ifdef RISCOS
    p = mch_munge_fname(q);
#else
    p = expand_env_save(q);
#endif
    vim_free(q);
    if (p == NULL)
        return FAIL;
    bp->dbg_name = fix_fname(p);
    vim_free(p);
#ifdef MACOS_CLASSIC
    if (bp->dbg_name != NULL)
        slash_n_colon_adjust(bp->dbg_name);
#endif
    }

    if (bp->dbg_name == NULL)
    return FAIL;
    return OK;
}

/*
 * ":breakadd".
 */
    void
ex_breakadd(eap)
    exarg_T    *eap;
{
    struct debuggy *bp;
    char_u    *pat;

    if (dbg_parsearg(eap->arg) == OK)
    {
    bp = &BREAKP(dbg_breakp.ga_len);
    pat = file_pat_to_reg_pat(bp->dbg_name, NULL, NULL, FALSE);
    if (pat != NULL)
    {
        bp->dbg_prog = vim_regcomp(pat, RE_MAGIC + RE_STRING);
        vim_free(pat);
    }
    if (pat == NULL || bp->dbg_prog == NULL)
        vim_free(bp->dbg_name);
    else
    {
        if (bp->dbg_lnum == 0)    /* default line number is 1 */
        bp->dbg_lnum = 1;
        BREAKP(dbg_breakp.ga_len++).dbg_nr = ++last_breakp;
        --dbg_breakp.ga_room;
        ++debug_tick;
    }
    }
}

/*
 * ":debuggreedy".
 */
    void
ex_debuggreedy(eap)
    exarg_T    *eap;
{
    if (eap->addr_count == 0 || eap->line2 != 0)
    debug_greedy = TRUE;
    else
    debug_greedy = FALSE;
}

/*
 * ":breakdel".
 */
    void
ex_breakdel(eap)
    exarg_T    *eap;
{
    struct debuggy *bp, *bpi;
    int        nr;
    int        todel = -1;
    int        i;
    linenr_T    best_lnum = 0;

    if (isdigit(*eap->arg))
    {
    /* ":breakdel {nr}" */
    nr = atol((char *)eap->arg);
    for (i = 0; i < dbg_breakp.ga_len; ++i)
        if (BREAKP(i).dbg_nr == nr)
        {
        todel = i;
        break;
        }
    }
    else
    {
    /* ":breakdel {func|file} [lnum] {name}" */
    if (dbg_parsearg(eap->arg) == FAIL)
        return;
    bp = &BREAKP(dbg_breakp.ga_len);
    for (i = 0; i < dbg_breakp.ga_len; ++i)
    {
        bpi = &BREAKP(i);
        if (bp->dbg_type == bpi->dbg_type
            && STRCMP(bp->dbg_name, bpi->dbg_name) == 0
            && (bp->dbg_lnum == bpi->dbg_lnum
            || (bp->dbg_lnum == 0
                && (best_lnum == 0
                || bpi->dbg_lnum < best_lnum))))
        {
        todel = i;
        best_lnum = bpi->dbg_lnum;
        }
    }
    vim_free(bp->dbg_name);
    }

    if (todel < 0)
    EMSG2(_("E161: Breakpoint not found: %s"), eap->arg);
    else
    {
    vim_free(BREAKP(todel).dbg_name);
    vim_free(BREAKP(todel).dbg_prog);
    --dbg_breakp.ga_len;
    ++dbg_breakp.ga_room;
    if (todel < dbg_breakp.ga_len)
        mch_memmove(&BREAKP(todel), &BREAKP(todel + 1),
            (dbg_breakp.ga_len - todel) * sizeof(struct debuggy));
    ++debug_tick;
    }
}

/*
 * ":breaklist".
 */
/*ARGSUSED*/
    void
ex_breaklist(eap)
    exarg_T    *eap;
{
    struct debuggy *bp;
    int        i;

    if (dbg_breakp.ga_len == 0)
    MSG(_("No breakpoints defined"));
    else
    for (i = 0; i < dbg_breakp.ga_len; ++i)
    {
        bp = &BREAKP(i);
        smsg((char_u *)_("%3d  %s %s  line %ld"),
            bp->dbg_nr,
            bp->dbg_type == DBG_FUNC ? "func" : "file",
            bp->dbg_name,
            (long)bp->dbg_lnum);
    }
}

/*
 * Find a breakpoint for a function or sourced file.
 * Returns line number at which to break; zero when no matching breakpoint.
 */
    linenr_T
dbg_find_breakpoint(file, fname, after)
    int        file;        /* TRUE for a file, FALSE for a function */
    char_u    *fname;        /* file or function name */
    linenr_T    after;        /* after this line number */
{
    struct debuggy *bp;
    int        i;
    linenr_T    lnum = 0;
    regmatch_T    regmatch;
    char_u    *name = fname;
    int        prev_got_int;

    /* Replace K_SNR in function name with "<SNR>". */
    if (!file && fname[0] == K_SPECIAL)
    {
    name = alloc((unsigned)STRLEN(fname) + 3);
    if (name == NULL)
        name = fname;
    else
    {
        STRCPY(name, "<SNR>");
        STRCPY(name + 5, fname + 3);
    }
    }

    for (i = 0; i < dbg_breakp.ga_len; ++i)
    {
    /* skip entries that are not useful or are for a line that is beyond
     * an already found breakpoint */
    bp = &BREAKP(i);
    if ((bp->dbg_type == DBG_FILE) == file
        && bp->dbg_lnum > after
        && (lnum == 0 || bp->dbg_lnum < lnum))
    {
        regmatch.regprog = bp->dbg_prog;
        regmatch.rm_ic = FALSE;
        /*
         * Save the value of got_int and reset it.  We don't want a previous
         * interruption cancel matching, only hitting CTRL-C while matching
         * should abort it.
         */
        prev_got_int = got_int;
        got_int = FALSE;
        if (vim_regexec(®match, name, (colnr_T)0))
        lnum = bp->dbg_lnum;
        got_int |= prev_got_int;
    }
    }
    if (name != fname)
    vim_free(name);

    return lnum;
}

/*
 * Called when a breakpoint was encountered.
 */
    void
dbg_breakpoint(name, lnum)
    char_u    *name;
    linenr_T    lnum;
{
    /* We need to check if this line is actually executed in do_one_cmd() */
    debug_breakpoint_name = name;
    debug_breakpoint_lnum = lnum;
}
#endif

/*
 * If 'autowrite' option set, try to write the file.
 * Careful: autocommands may make "buf" invalid!
 *
 * return FAIL for failure, OK otherwise
 */
    int
autowrite(buf, forceit)
    buf_T    *buf;
    int        forceit;
{
    if (!(p_aw || p_awa) || !p_write
#ifdef FEAT_QUICKFIX
    /* never autowrite a "nofile" or "nowrite" buffer */
    || bt_dontwrite(buf)
#endif
    || (!forceit && buf->b_p_ro) || buf->b_ffname == NULL)
    return FAIL;
    return buf_write_all(buf, forceit);
}

/*
 * flush all buffers, except the ones that are readonly
 */
    void
autowrite_all()
{
    buf_T    *buf;

    if (!(p_aw || p_awa) || !p_write)
    return;
    for (buf = firstbuf; buf; buf = buf->b_next)
    if (bufIsChanged(buf) && !buf->b_p_ro)
    {
        (void)buf_write_all(buf, FALSE);
#ifdef FEAT_AUTOCMD
        /* an autocommand may have deleted the buffer */
        if (!buf_valid(buf))
        buf = firstbuf;
#endif
    }
}

/*
 * return TRUE if buffer was changed and cannot be abandoned.
 */
/*ARGSUSED*/
    int
check_changed(buf, checkaw, mult_win, forceit, allbuf)
    buf_T    *buf;
    int        checkaw;    /* do autowrite if buffer was changed */
    int        mult_win;    /* check also when several wins for the buf */
    int        forceit;
    int        allbuf;        /* may write all buffers */
{
    if (       !forceit
        && bufIsChanged(buf)
        && (mult_win || buf->b_nwindows <= 1)
        && (!checkaw || autowrite(buf, forceit) == FAIL))
    {
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
    if ((p_confirm || cmdmod.confirm) && p_write)
    {
        buf_T    *buf2;
        int        count = 0;

        if (allbuf)
        for (buf2 = firstbuf; buf2 != NULL; buf2 = buf2->b_next)
            if (bufIsChanged(buf2)
                     && (buf2->b_ffname != NULL
# ifdef FEAT_BROWSE
                     || cmdmod.browse
# endif
                    ))
            ++count;
#ifdef FEAT_AUTOCMD
        if (!buf_valid(buf))
        /* Autocommand deleted buffer, oops!  It's not changed now. */
        return FALSE;
#endif
        dialog_changed(buf, count > 1);
#ifdef FEAT_AUTOCMD
        if (!buf_valid(buf))
        /* Autocommand deleted buffer, oops!  It's not changed now. */
        return FALSE;
#endif
        return bufIsChanged(buf);
    }
#endif
    EMSG(_(e_nowrtmsg));
    return TRUE;
    }
    return FALSE;
}

#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) || defined(PROTO)

#ifdef FEAT_BROWSE
static void    browse_save_fname __ARGS((buf_T *buf));

/*
 * When wanting to write a file without a file name, ask the user for a name.
 */
    static void
browse_save_fname(buf)
    buf_T    *buf;
{
    if (buf->b_fname == NULL)
    {
    char_u *fname;

    fname = do_browse(TRUE, (char_u *)_("Save As"), NULL, NULL, NULL,
                                   NULL, buf);
    if (fname != NULL)
    {
        setfname(fname, NULL, TRUE);
        vim_free(fname);
    }
    }
}
#endif

/*
 * Ask the user what to do when abondoning a changed buffer.
 */
    void
dialog_changed(buf, checkall)
    buf_T    *buf;
    int        checkall;    /* may abandon all changed buffers */
{
    char_u    buff[IOSIZE];
    int        ret;
    buf_T    *buf2;

    dialog_msg(buff, _("Save changes to \"%.*s\"?"),
            (buf->b_fname != NULL) ?
            buf->b_fname : (char_u *)_("Untitled"));
    if (checkall)
    ret = vim_dialog_yesnoallcancel(VIM_QUESTION, NULL, buff, 1);
    else
    ret = vim_dialog_yesnocancel(VIM_QUESTION, NULL, buff, 1);

    if (ret == VIM_YES)
    {
#ifdef FEAT_BROWSE
    /* May get file name, when there is none */
    browse_save_fname(buf);
#endif
    if (buf->b_fname != NULL)   /* didn't hit Cancel */
        (void)buf_write_all(buf, FALSE);
    }
    else if (ret == VIM_NO)
    {
    unchanged(buf, TRUE);
    }
    else if (ret == VIM_ALL)
    {
    /*
     * Write all modified files that can be written.
     * Skip readonly buffers, these need to be confirmed
     * individually.
     */
    for (buf2 = firstbuf; buf2 != NULL; buf2 = buf2->b_next)
    {
        if (bufIsChanged(buf2)
            && (buf2->b_ffname != NULL
#ifdef FEAT_BROWSE
            || cmdmod.browse
#endif
            )
            && !buf2->b_p_ro)
        {
#ifdef FEAT_BROWSE
        /* May get file name, when there is none */
        browse_save_fname(buf2);
#endif
        if (buf2->b_fname != NULL)   /* didn't hit Cancel */
            (void)buf_write_all(buf2, FALSE);
#ifdef FEAT_AUTOCMD
        /* an autocommand may have deleted the buffer */
        if (!buf_valid(buf2))
            buf2 = firstbuf;
#endif
        }
    }
    }
    else if (ret == VIM_DISCARDALL)
    {
    /*
     * mark all buffers as unchanged
     */
    for (buf2 = firstbuf; buf2 != NULL; buf2 = buf2->b_next)
        unchanged(buf2, TRUE);
    }
}
#endif

/*
 * Return TRUE if the buffer "buf" can be abandoned, either by making it
 * hidden, autowriting it or unloading it.
 */
    int
can_abandon(buf, forceit)
    buf_T    *buf;
    int        forceit;
{
    return (       P_HID(buf)
        || !bufIsChanged(buf)
        || buf->b_nwindows > 1
        || autowrite(buf, forceit) == OK
        || forceit);
}

/*
 * Return TRUE if any buffer was changed and cannot be abandoned.
 * That changed buffer becomes the current buffer.
 */
    int
check_changed_any(hidden)
    int        hidden;        /* Only check hidden buffers */
{
    buf_T    *buf;
    int        save;
#ifdef FEAT_WINDOWS
    win_T    *wp;
#endif

#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
    for (;;)
    {
#endif
    /* check curbuf first: if it was changed we can't abandon it */
    if (!hidden && curbufIsChanged())
        buf = curbuf;
    else
    {
        for (buf = firstbuf; buf != NULL; buf = buf->b_next)
        if ((!hidden || buf->b_nwindows == 0) && bufIsChanged(buf))
            break;
    }
    if (buf == NULL)    /* No buffers changed */
        return FALSE;

#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
    if (p_confirm || cmdmod.confirm)
    {
        if (check_changed(buf, p_awa, TRUE, FALSE, TRUE) && buf_valid(buf))
        break;        /* didn't save - still changes */
    }
    else
        break;        /* confirm not active - has changes */
    }
#endif

    exiting = FALSE;
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
    /*
     * When ":confirm" used, don't give an error message.
     */
    if (!(p_confirm || cmdmod.confirm))
#endif
    {
    /* There must be a wait_return for this message, do_buffer()
     * may cause a redraw.  But wait_return() is a no-op when vgetc()
     * is busy (Quit used from window menu), then make sure we don't
     * cause a scroll up. */
    if (vgetc_busy)
    {
        msg_row = cmdline_row;
        msg_col = 0;
        msg_didout = FALSE;
    }
    if (EMSG2(_("E162: No write since last change for buffer \"%s\""),
            buf_spname(buf) != NULL ? (char_u *)buf_spname(buf) :
            buf->b_fname))
    {
        save = no_wait_return;
        no_wait_return = FALSE;
        wait_return(FALSE);
        no_wait_return = save;
    }
    }

#ifdef FEAT_WINDOWS
    /* Try to find a window that contains the buffer. */
    if (buf != curbuf)
    for (wp = firstwin; wp != NULL; wp = wp->w_next)
        if (wp->w_buffer == buf)
        {
        win_goto(wp);
# ifdef FEAT_AUTOCMD
        /* Paranoia: did autocms wipe out the buffer with changes? */
        if (!buf_valid(buf))
            return TRUE;
# endif
        break;
        }
#endif

    /* Open the changed buffer in the current window. */
    if (buf != curbuf)
    set_curbuf(buf, DOBUF_GOTO);

    return TRUE;
}

/*
 * return FAIL if there is no file name, OK if there is one
 * give error message for FAIL
 */
    int
check_fname()
{
    if (curbuf->b_ffname == NULL)
    {
    EMSG(_(e_noname));
    return FAIL;
    }
    return OK;
}

/*
 * flush the contents of a buffer, unless it has no file name
 *
 * return FAIL for failure, OK otherwise
 */
    int
buf_write_all(buf, forceit)
    buf_T    *buf;
    int        forceit;
{
    int        retval;
#ifdef FEAT_AUTOCMD
    buf_T    *old_curbuf = curbuf;
#endif

    retval = (buf_write(buf, buf->b_ffname, buf->b_fname,
                   (linenr_T)1, buf->b_ml.ml_line_count, NULL,
                          FALSE, forceit, TRUE, FALSE));
#ifdef FEAT_AUTOCMD
    if (curbuf != old_curbuf)
    MSG(_("Warning: Entered other buffer unexpectedly (check autocommands)"));
#endif
    return retval;
}

/*
 * Code to handle the argument list.
 */

/*
 * Isolate one argument, taking quotes and backticks.
 * Changes the argument in-place, puts a NUL after it.
 * Quotes are removed, backticks remain.
 * Return a pointer to the start of the next argument.
 */
    char_u *
do_one_arg(str)
    char_u *str;
{
    char_u    *p;
    int        inquote;
    int        inbacktick;

    inquote = FALSE;
    inbacktick = FALSE;
    for (p = str; *str; ++str)
    {
    /*
     * for MSDOS et.al. a backslash is part of a file name.
     * Only skip ", space and tab.
     */
    if (rem_backslash(str))
    {
        *p++ = *str++;
        *p++ = *str;
    }
    else
    {
        /* An item ends at a space not in quotes or backticks */
        if (!inquote && !inbacktick && vim_isspace(*str))
        break;
        if (!inquote && *str == '`')
        inbacktick ^= TRUE;
        if (!inbacktick && *str == '"')
        inquote ^= TRUE;
        else
        *p++ = *str;
    }
    }
    str = skipwhite(str);
    *p = NUL;

    return str;
}

static int do_arglist __ARGS((char_u *str, int what, int after));
static void alist_check_arg_idx __ARGS((void));
#ifdef FEAT_LISTCMDS
static int alist_add_list __ARGS((int count, char_u **files, int after));
#endif
#define AL_SET    1
#define AL_ADD    2
#define AL_DEL    3

#if defined(FEAT_GUI) || defined(FEAT_CLIENTSERVER) || defined(PROTO)
/*
 * Redefine the argument list.
 */
    void
set_arglist(str)
    char_u    *str;
{
    do_arglist(str, AL_SET, 0);
}
#endif

/*
 * "what" == AL_SET: Redefine the argument list to 'str'.
 * "what" == AL_ADD: add files in 'str' to the argument list after "after".
 * "what" == AL_DEL: remove files in 'str' from the argument list.
 *
 * Return FAIL for failure, OK otherwise.
 */
/*ARGSUSED*/
    static int
do_arglist(str, what, after)
    char_u    *str;
    int        what;
    int        after;        /* 0 means before first one */
{
    garray_T    new_ga;
    int        exp_count;
    char_u    **exp_files;
    int        i;
#ifdef FEAT_LISTCMDS
    char_u    *p;
    int        match;
#endif

    /*
     * Collect all file name arguments in "new_ga".
     */
    ga_init2(&new_ga, (int)sizeof(char_u *), 20);
    while (*str)
    {
    if (ga_grow(&new_ga, 1) == FAIL)
    {
        ga_clear(&new_ga);
        return FAIL;
    }
    ((char_u **)new_ga.ga_data)[new_ga.ga_len++] = str;
    --new_ga.ga_room;

    /* Isolate one argument, change it in-place, put a NUL after it. */
    str = do_one_arg(str);
    }

#ifdef FEAT_LISTCMDS
    if (what == AL_DEL)
    {
    regmatch_T    regmatch;
    int        didone;

    /*
     * Delete the items: use each item as a regexp and find a match in the
     * argument list.
     */
#ifdef CASE_INSENSITIVE_FILENAME
    regmatch.rm_ic = TRUE;        /* Always ignore case */
#else
    regmatch.rm_ic = FALSE;        /* Never ignore case */
#endif
    for (i = 0; i < new_ga.ga_len && !got_int; ++i)
    {
        p = ((char_u **)new_ga.ga_data)[i];
        p = file_pat_to_reg_pat(p, NULL, NULL, FALSE);
        if (p == NULL)
        break;
        regmatch.regprog = vim_regcomp(p, p_magic ? RE_MAGIC : 0);
        if (regmatch.regprog == NULL)
        {
        vim_free(p);
        break;
        }

        didone = FALSE;
        for (match = 0; match < ARGCOUNT; ++match)
        if (vim_regexec(®match, alist_name(&ARGLIST[match]),
                                  (colnr_T)0))
        {
            didone = TRUE;
            vim_free(ARGLIST[match].ae_fname);
            mch_memmove(ARGLIST + match, ARGLIST + match + 1,
                (ARGCOUNT - match - 1) * sizeof(aentry_T));
            --ALIST(curwin)->al_ga.ga_len;
            ++ALIST(curwin)->al_ga.ga_room;
            if (curwin->w_arg_idx > match)
            --curwin->w_arg_idx;
            --match;
        }

        vim_free(regmatch.regprog);
        vim_free(p);
        if (!didone)
        EMSG2(_(e_nomatch2), ((char_u **)new_ga.ga_data)[i]);
    }
    ga_clear(&new_ga);
    }
    else
#endif
    {
    i = expand_wildcards(new_ga.ga_len, (char_u **)new_ga.ga_data,
        &exp_count, &exp_files, EW_DIR|EW_FILE|EW_ADDSLASH|EW_NOTFOUND);
    ga_clear(&new_ga);
    if (i == FAIL)
        return FAIL;
    if (exp_count == 0)
    {
        EMSG(_(e_nomatch));
        return FAIL;
    }

#ifdef FEAT_LISTCMDS
    if (what == AL_ADD)
    {
        (void)alist_add_list(exp_count, exp_files, after);
        vim_free(exp_files);
    }
    else /* what == AL_SET */
#endif
        alist_set(ALIST(curwin), exp_count, exp_files, FALSE);
    }

    alist_check_arg_idx();

    return OK;
}

/*
 * Check the validity of the arg_idx for each other window.
 */
    static void
alist_check_arg_idx()
{
#ifdef FEAT_WINDOWS
    win_T    *win;

    for (win = firstwin; win != NULL; win = win->w_next)
    if (win->w_alist == curwin->w_alist)
        check_arg_idx(win);
#else
    check_arg_idx(curwin);
#endif
}

/*
 * Check if window "win" is editing the w_arg_idx file in its argument list.
 */
    void
check_arg_idx(win)
    win_T    *win;
{
    if (WARGCOUNT(win) > 1
        && (win->w_arg_idx >= WARGCOUNT(win)
        || (win->w_buffer->b_fnum
                      != WARGLIST(win)[win->w_arg_idx].ae_fnum
            && (win->w_buffer->b_ffname == NULL
             || !(fullpathcmp(
                 alist_name(&WARGLIST(win)[win->w_arg_idx]),
                win->w_buffer->b_ffname, TRUE) & FPC_SAME)))))
    {
    /* We are not editing the current entry in the argument list.
     * Set "arg_had_last" if we are editing the last one. */
    win->w_arg_idx_invalid = TRUE;
    if (win->w_arg_idx != WARGCOUNT(win) - 1
        && arg_had_last == FALSE
#ifdef FEAT_WINDOWS
        && ALIST(win) == &global_alist
#endif
        && GARGCOUNT > 0
        && win->w_arg_idx < GARGCOUNT
        && (win->w_buffer->b_fnum == GARGLIST[GARGCOUNT - 1].ae_fnum
            || (win->w_buffer->b_ffname != NULL
            && (fullpathcmp(alist_name(&GARGLIST[GARGCOUNT - 1]),
                win->w_buffer->b_ffname, TRUE) & FPC_SAME))))
        arg_had_last = TRUE;
    }
    else
    {
    /* We are editing the current entry in the argument list.
     * Set "arg_had_last" if it's also the last one */
    win->w_arg_idx_invalid = FALSE;
    if (win->w_arg_idx == WARGCOUNT(win) - 1
#ifdef FEAT_WINDOWS
        && win->w_alist == &global_alist
#endif
        )
        arg_had_last = TRUE;
    }
}

/*
 * ":args", ":argslocal" and ":argsglobal".
 */
    void
ex_args(eap)
    exarg_T    *eap;
{
    int        i;

    if (eap->cmdidx != CMD_args)
    {
#if defined(FEAT_WINDOWS) && defined(FEAT_LISTCMDS)
    alist_unlink(ALIST(curwin));
    if (eap->cmdidx == CMD_argglobal)
        ALIST(curwin) = &global_alist;
    else /* eap->cmdidx == CMD_arglocal */
        alist_new();
#else
    ex_ni(eap);
    return;
#endif
    }

    if (!ends_excmd(*eap->arg))
    {
    /*
     * ":args file ..": define new argument list, handle like ":next"
     * Also for ":argslocal file .." and ":argsglobal file ..".
     */
    ex_next(eap);
    }
    else
#if defined(FEAT_WINDOWS) && defined(FEAT_LISTCMDS)
    if (eap->cmdidx == CMD_args)
#endif
    {
    /*
     * ":args": list arguments.
     */
    if (ARGCOUNT > 0)
    {
        /* Overwrite the command, for a short list there is no scrolling
         * required and no wait_return(). */
        gotocmdline(TRUE);
        for (i = 0; i < ARGCOUNT; ++i)
        {
        if (i == curwin->w_arg_idx)
            msg_putchar('[');
        msg_outtrans(alist_name(&ARGLIST[i]));
        if (i == curwin->w_arg_idx)
            msg_putchar(']');
        msg_putchar(' ');
        }
    }
    }
#if defined(FEAT_WINDOWS) && defined(FEAT_LISTCMDS)
    else if (eap->cmdidx == CMD_arglocal)
    {
    garray_T    *gap = &curwin->w_alist->al_ga;

    /*
     * ":argslocal": make a local copy of the global argument list.
     */
    if (ga_grow(gap, GARGCOUNT) == OK)
        for (i = 0; i < GARGCOUNT; ++i)
        if (GARGLIST[i].ae_fname != NULL)
        {
            AARGLIST(curwin->w_alist)[gap->ga_len].ae_fname =
                        vim_strsave(GARGLIST[i].ae_fname);
            AARGLIST(curwin->w_alist)[gap->ga_len].ae_fnum =
                              GARGLIST[i].ae_fnum;
            ++gap->ga_len;
            --gap->ga_room;
        }
    }
#endif
}

/*
 * ":previous", ":sprevious", ":Next" and ":sNext".
 */
    void
ex_previous(eap)
    exarg_T    *eap;
{
    /* If past the last one already, go to the last one. */
    if (curwin->w_arg_idx - (int)eap->line2 >= ARGCOUNT)
    do_argfile(eap, ARGCOUNT - 1);
    else
    do_argfile(eap, curwin->w_arg_idx - (int)eap->line2);
}

/*
 * ":rewind", ":first", ":sfirst" and ":srewind".
 */
    void
ex_rewind(eap)
    exarg_T    *eap;
{
    do_argfile(eap, 0);
}

/*
 * ":last" and ":slast".
 */
    void
ex_last(eap)
    exarg_T    *eap;
{
    do_argfile(eap, ARGCOUNT - 1);
}

/*
 * ":argument" and ":sargument".
 */
    void
ex_argument(eap)
    exarg_T    *eap;
{
    int        i;

    if (eap->addr_count > 0)
    i = eap->line2 - 1;
    else
    i = curwin->w_arg_idx;
    do_argfile(eap, i);
}

/*
 * Edit file "argn" of the argument lists.
 */
    void
do_argfile(eap, argn)
    exarg_T    *eap;
    int        argn;
{
    int        other;
    char_u    *p;

    if (argn < 0 || argn >= ARGCOUNT)
    {
    if (ARGCOUNT <= 1)
        EMSG(_("E163: There is only one file to edit"));
    else if (argn < 0)
        EMSG(_("E164: Cannot go before first file"));
    else
        EMSG(_("E165: Cannot go beyond last file"));
    }
    else
    {
    setpcmark();
#ifdef FEAT_GUI
    need_mouse_correct = TRUE;
#endif

#ifdef FEAT_WINDOWS
    if (*eap->cmd == 's')        /* split window first */
    {
        if (win_split(0, 0) == FAIL)
        return;
# ifdef FEAT_SCROLLBIND
        curwin->w_p_scb = FALSE;
# endif
    }
    else
#endif
    {
        /*
         * if 'hidden' set, only check for changed file when re-editing
         * the same buffer
         */
        other = TRUE;
        if (P_HID(curbuf))
        {
        p = fix_fname(alist_name(&ARGLIST[argn]));
        other = otherfile(p);
        vim_free(p);
        }
        if ((!P_HID(curbuf) || !other)
          && check_changed(curbuf, TRUE, !other, eap->forceit, FALSE))
        return;
    }

    curwin->w_arg_idx = argn;
    if (argn == ARGCOUNT - 1
#ifdef FEAT_WINDOWS
        && curwin->w_alist == &global_alist
#endif
       )
        arg_had_last = TRUE;

    /* Edit the file; always use the last known line number. */
    (void)do_ecmd(0, alist_name(&ARGLIST[curwin->w_arg_idx]), NULL,
              eap, ECMD_LAST,
              (P_HID(curwin->w_buffer) ? ECMD_HIDE : 0) +
                       (eap->forceit ? ECMD_FORCEIT : 0));

    /* like Vi: set the mark where the cursor is in the file. */
    if (eap->cmdidx != CMD_argdo)
        setmark('\'');
    }
}

/*
 * ":next", and commands that behave like it.
 */
    void
ex_next(eap)
    exarg_T    *eap;
{
    int        i;

    /*
     * check for changed buffer now, if this fails the argument list is not
     * redefined.
     */
    if (       P_HID(curbuf)
        || eap->cmdidx == CMD_snext
        || !check_changed(curbuf, TRUE, FALSE, eap->forceit, FALSE))
    {
    if (*eap->arg != NUL)            /* redefine file list */
    {
        if (do_arglist(eap->arg, AL_SET, 0) == FAIL)
        return;
        i = 0;
    }
    else
        i = curwin->w_arg_idx + (int)eap->line2;
    do_argfile(eap, i);
    }
}

#ifdef FEAT_LISTCMDS
/*
 * ":argedit"
 */
    void
ex_argedit(eap)
    exarg_T    *eap;
{
    int        fnum;
    int        i;
    char_u    *s;

    /* Add the argument to the buffer list and get the buffer number. */
    fnum = buflist_add(eap->arg, BLN_LISTED);

    /* Check if this argument is already in the argument list. */
    for (i = 0; i < ARGCOUNT; ++i)
    if (ARGLIST[i].ae_fnum == fnum)
        break;
    if (i == ARGCOUNT)
    {
    /* Can't find it, add it to the argument list. */
    s = vim_strsave(eap->arg);
    if (s == NULL)
        return;
    i = alist_add_list(1, &s,
           eap->addr_count > 0 ? (int)eap->line2 : curwin->w_arg_idx + 1);
    if (i < 0)
        return;
    curwin->w_arg_idx = i;
    }

    alist_check_arg_idx();

    /* Edit the argument. */
    do_argfile(eap, i);
}

/*
 * ":argadd"
 */
    void
ex_argadd(eap)
    exarg_T    *eap;
{
    do_arglist(eap->arg, AL_ADD,
           eap->addr_count > 0 ? (int)eap->line2 : curwin->w_arg_idx + 1);
#ifdef FEAT_TITLE
    maketitle();
#endif
}

/*
 * ":argdelete"
 */
    void
ex_argdelete(eap)
    exarg_T    *eap;
{
    int        i;
    int        n;

    if (eap->addr_count > 0)
    {
    /* ":1,4argdel": Delete all arguments in the range. */
    if (eap->line2 > ARGCOUNT)
        eap->line2 = ARGCOUNT;
    n = eap->line2 - eap->line1 + 1;
    if (*eap->arg != NUL || n <= 0)
        EMSG(_(e_invarg));
    else
    {
        for (i = eap->line1; i <= eap->line2; ++i)
        vim_free(ARGLIST[i - 1].ae_fname);
        mch_memmove(ARGLIST + eap->line1 - 1, ARGLIST + eap->line2,
            (size_t)((ARGCOUNT - eap->line2) * sizeof(aentry_T)));
        ALIST(curwin)->al_ga.ga_len -= n;
        ALIST(curwin)->al_ga.ga_room += n;
        if (curwin->w_arg_idx >= eap->line2)
        curwin->w_arg_idx -= n;
        else if (curwin->w_arg_idx > eap->line1)
        curwin->w_arg_idx = eap->line1;
    }
    }
    else if (*eap->arg == NUL)
    EMSG(_(e_argreq));
    else
    do_arglist(eap->arg, AL_DEL, 0);
#ifdef FEAT_TITLE
    maketitle();
#endif
}

/*
 * ":argdo", ":windo", ":bufdo"
 */
    void
ex_listdo(eap)
    exarg_T    *eap;
{
    int        i;
#ifdef FEAT_WINDOWS
    win_T    *win;
#endif
    buf_T    *buf;
    int        next_fnum = 0;
#if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
    char_u    *save_ei = vim_strsave(p_ei);
    char_u    *new_ei;
#endif

#ifndef FEAT_WINDOWS
    if (eap->cmdidx == CMD_windo)
    {
    ex_ni(eap);
    return;
    }
#endif

#if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
    new_ei = vim_strnsave(p_ei, (int)STRLEN(p_ei) + 8);
    if (new_ei != NULL)
    {
    STRCAT(new_ei, ",Syntax");
    set_string_option_direct((char_u *)"ei", -1, new_ei, OPT_FREE);
    vim_free(new_ei);
    }
#endif

    if (eap->cmdidx == CMD_windo
        || P_HID(curbuf)
        || !check_changed(curbuf, TRUE, FALSE, eap->forceit, FALSE))
    {
    /* start at the first argument/window/buffer */
    i = 0;
#ifdef FEAT_WINDOWS
    win = firstwin;
#endif
    /* set pcmark now */
    if (eap->cmdidx == CMD_bufdo)
        goto_buffer(eap, DOBUF_FIRST, FORWARD, 0);
    else
        setpcmark();
    listcmd_busy = TRUE;        /* avoids setting pcmark below */

    while (!got_int)
    {
        if (eap->cmdidx == CMD_argdo)
        {
        /* go to argument "i" */
        if (i == ARGCOUNT)
            break;
        /* Don't call do_argfile() when already there, it will try
         * reloading the file. */
        if (curwin->w_arg_idx != i)
            do_argfile(eap, i);
        if (curwin->w_arg_idx != i)
            break;
        ++i;
        }
#ifdef FEAT_WINDOWS
        else if (eap->cmdidx == CMD_windo)
        {
        /* go to window "win" */
        if (!win_valid(win))
            break;
        win_goto(win);
        win = win->w_next;
        }
#endif
        else if (eap->cmdidx == CMD_bufdo)
        {
        /* Remember the number of the next listed buffer, in case
         * ":bwipe" is used or autocommands do something strange. */
        next_fnum = -1;
        for (buf = curbuf->b_next; buf != NULL; buf = buf->b_next)
            if (buf->b_p_bl)
            {
            next_fnum = buf->b_fnum;
            break;
            }
        }

        /* execute the command */
        do_cmdline(eap->arg, eap->getline, eap->cookie,
                        DOCMD_VERBOSE + DOCMD_NOWAIT);

        if (eap->cmdidx == CMD_bufdo)
        {
        /* Done? */
        if (next_fnum < 0)
            break;
        /* Check if the buffer still exists. */
        for (buf = firstbuf; buf != NULL; buf = buf->b_next)
            if (buf->b_fnum == next_fnum)
            break;
        if (buf == NULL)
            break;
        goto_buffer(eap, DOBUF_FIRST, FORWARD, next_fnum);
        /* If autocommands took us elsewhere, quit here */
        if (curbuf->b_fnum != next_fnum)
            break;
        }

#ifdef FEAT_SCROLLBIND
        if (eap->cmdidx == CMD_windo && curwin->w_p_scb)
        {
        /* required when 'scrollbind' has been set */
        validate_cursor();    /* may need to update w_leftcol */
        do_check_scrollbind(TRUE);
        }
#endif
    }
    listcmd_busy = FALSE;
    }

#if defined(FEAT_AUTOCMD) && defined(FEAT_SYN_HL)
    if (new_ei != NULL)
    {
    set_string_option_direct((char_u *)"ei", -1, save_ei, OPT_FREE);
    apply_autocmds(EVENT_SYNTAX, curbuf->b_p_syn,
                         curbuf->b_fname, TRUE, curbuf);
    }
    vim_free(save_ei);
#endif
}

/*
 * Add files[count] to the arglist of the current window after arg "after".
 * The file names in files[count] must have been allocated and are taken over.
 * Files[] itself is not taken over.
 * Returns index of first added argument.  Returns -1 when failed (out of mem).
 */
    static int
alist_add_list(count, files, after)
    int        count;
    char_u    **files;
    int        after;        /* where to add: 0 = before first one */
{
    int        i;

    if (ga_grow(&ALIST(curwin)->al_ga, count) == OK)
    {
    if (after < 0)
        after = 0;
    if (after > ARGCOUNT)
        after = ARGCOUNT;
    if (after < ARGCOUNT)
        mch_memmove(&(ARGLIST[after + count]), &(ARGLIST[after]),
                       (ARGCOUNT - after) * sizeof(aentry_T));
    for (i = 0; i < count; ++i)
    {
        ARGLIST[after + i].ae_fname = files[i];
        ARGLIST[after + i].ae_fnum = buflist_add(files[i], BLN_LISTED);
    }
    ALIST(curwin)->al_ga.ga_len += count;
    ALIST(curwin)->al_ga.ga_room -= count;
    if (curwin->w_arg_idx >= after)
        ++curwin->w_arg_idx;
    return after;
    }

    for (i = 0; i < count; ++i)
    vim_free(files[i]);
    return -1;
}

#endif /* FEAT_LISTCMDS */

#ifdef FEAT_EVAL
/*
 * ":compiler {name}"
 */
    void
ex_compiler(eap)
    exarg_T    *eap;
{
    char_u    *buf;

    if (*eap->arg == NUL)
    {
    /* List all compiler scripts. */
    do_cmdline_cmd((char_u *)"echo globpath(&rtp, 'compiler/*.vim')");
    }
    else
    {
    buf = alloc((unsigned)(STRLEN(eap->arg) + 14));
    if (buf != NULL)
    {
        do_unlet((char_u *)"current_compiler");
        sprintf((char *)buf, "compiler/%s.vim", eap->arg);
        (void)cmd_runtime(buf, TRUE);
        vim_free(buf);
    }
    }
}
#endif

/*
 * ":runtime {name}"
 */
    void
ex_runtime(eap)
    exarg_T    *eap;
{
    cmd_runtime(eap->arg, eap->forceit);
}

static void source_callback __ARGS((char_u *fname));

    static void
source_callback(fname)
    char_u    *fname;
{
    (void)do_source(fname, FALSE, FALSE);
}

/*
 * Source the file "name" from all directories in 'runtimepath'.
 * "name" can contain wildcards.
 * When "all" is TRUE, source all files, otherwise only the first one.
 * return FAIL when no file could be sourced, OK otherwise.
 */
    int
cmd_runtime(name, all)
    char_u    *name;
    int        all;
{
    return do_in_runtimepath(name, all, source_callback);
}

/*
 * Find "name" in 'runtimepath'.  When found, call the "callback" function for
 * it.
 * When "all" is TRUE repeat for all matches, otherwise only the first one is
 * used.
 * Returns OK when at least one match found, FAIL otherwise.
 */
    int
do_in_runtimepath(name, all, callback)
    char_u    *name;
    int        all;
    void    (*callback)__ARGS((char_u *fname));
{
    char_u    *rtp;
    char_u    *np;
    char_u    *buf;
    char_u    *tail;
    int        num_files;
    char_u    **files;
    int        i;
    int        did_one = FALSE;
#ifdef AMIGA
    struct Process    *proc = (struct Process *)FindTask(0L);
    APTR        save_winptr = proc->pr_WindowPtr;

    /* Avoid a requester here for a volume that doesn't exist. */
    proc->pr_WindowPtr = (APTR)-1L;
#endif

    buf = alloc(MAXPATHL);
    if (buf != NULL)
    {
    if (p_verbose > 1)
        smsg((char_u *)_("Searching for \"%s\" in \"%s\""),
                         (char *)name, (char *)p_rtp);
    /* Loop over all entries in 'runtimepath'. */
    rtp = p_rtp;
    while (*rtp != NUL && (all || !did_one))
    {
        /* Copy the path from 'runtimepath' to buf[]. */
        copy_option_part(&rtp, buf, MAXPATHL, ",");
        if (STRLEN(buf) + STRLEN(name) + 2 < MAXPATHL)
        {
        add_pathsep(buf);
        tail = buf + STRLEN(buf);

        /* Loop over all patterns in "name" */
        np = name;
        while (*np != NUL && (all || !did_one))
        {
            /* Append the pattern from "name" to buf[]. */
            copy_option_part(&np, tail, (int)(MAXPATHL - (tail - buf)),
                                       "\t ");

            if (p_verbose > 2)
            msg_str((char_u *)_("Searching for \"%s\""), buf);

            /* Expand wildcards and source each match. */
            if (gen_expand_wildcards(1, &buf, &num_files, &files,
                                   EW_FILE) == OK)
            {
            for (i = 0; i < num_files; ++i)
            {
                (*callback)(files[i]);
                did_one = TRUE;
                if (!all)
                break;
            }
            FreeWild(num_files, files);
            }
        }
        }
    }
    vim_free(buf);
    }
    if (p_verbose > 0 && !did_one)
    msg_str((char_u *)_("not found in 'runtimepath': \"%s\""), name);

#ifdef AMIGA
    proc->pr_WindowPtr = save_winptr;
#endif

    return did_one ? OK : FAIL;
}

#if defined(FEAT_EVAL) && defined(FEAT_AUTOCMD)
/*
 * ":options"
 */
/*ARGSUSED*/
    void
ex_options(eap)
    exarg_T    *eap;
{
    cmd_source((char_u *)SYS_OPTWIN_FILE, NULL);
}
#endif

/*
 * ":source {fname}"
 */
    void
ex_source(eap)
    exarg_T    *eap;
{
#ifdef FEAT_BROWSE
    if (cmdmod.browse)
    {
    char_u *fname = NULL;

    fname = do_browse(FALSE, (char_u *)_("Source Vim script"), eap->arg,
                      NULL, NULL, BROWSE_FILTER_MACROS, NULL);
    if (fname != NULL)
    {
        cmd_source(fname, eap);
        vim_free(fname);
    }
    }
    else
#endif
    cmd_source(eap->arg, eap);
}

    static void
cmd_source(fname, eap)
    char_u    *fname;
    exarg_T    *eap;
{
    if (*fname == NUL)
    EMSG(_(e_argreq));

    /* ":source!" read vi commands */
    else if (eap != NULL && eap->forceit)
    /* Need to execute the commands directly when:
     * - ":g" command busy
     * - after ":argdo", ":windo" or ":bufdo"
     * - another command follows
     * - inside a loop
     */
    openscript(fname, global_busy || listcmd_busy || eap->nextcmd != NULL
#ifdef FEAT_EVAL
                         || eap->cstack->cs_idx >= 0
#endif
                         );

    /* ":source" read ex commands */
    else if (do_source(fname, FALSE, FALSE) == FAIL)
    EMSG2(_(e_notopen), fname);
}

/*
 * ":source" and associated commands.
 */
/*
 * Structure used to store info for each sourced file.
 * It is shared between do_source() and getsourceline().
 * This is required, because it needs to be handed to do_cmdline() and
 * sourcing can be done recursively.
 */
struct source_cookie
{
    FILE    *fp;        /* opened file for sourcing */
    char_u      *nextline;      /* if not NULL: line that was read ahead */
    int        finished;    /* ":finish" used */
#if defined (USE_CRNL) || defined (USE_CR)
    int        fileformat;    /* EOL_UNKNOWN, EOL_UNIX or EOL_DOS */
    int        error;        /* TRUE if LF found after CR-LF */
#endif
#ifdef FEAT_EVAL
    linenr_T    breakpoint;    /* next line with breakpoint or zero */
    char_u    *fname;        /* name of sourced file */
    int        dbg_tick;    /* debug_tick when breakpoint was set */
    int        level;        /* top nesting level of sourced file */
#endif
#ifdef FEAT_MBYTE
    vimconv_T    conv;        /* type of conversion */
#endif
};

#ifdef FEAT_EVAL
/*
 * Return the nesting level for a source cookie.
 */
    int
source_level(cookie)
    void *cookie;
{
    return ((struct source_cookie *)cookie)->level;
}
#endif

static char_u *get_one_sourceline __ARGS((struct source_cookie *sp));

#ifdef FEAT_EVAL
/* Growarray to store the names of sourced scripts.
 * For Unix also store the dev/ino, so that we don't have to stat() each
 * script when going through the list. */
struct scriptstuff
{
    char_u    *name;
# ifdef UNIX
    int        dev;
    ino_t    ino;
# endif
};
static garray_T script_names = {0, 0, sizeof(struct scriptstuff), 4, NULL};
#define SCRIPT_NAME(id) (((struct scriptstuff *)script_names.ga_data)[(id) - 1].name)
#define SCRIPT_DEV(id) (((struct scriptstuff *)script_names.ga_data)[(id) - 1].dev)
#define SCRIPT_INO(id) (((struct scriptstuff *)script_names.ga_data)[(id) - 1].ino)
#endif

/*
 * do_source: Read the file "fname" and execute its lines as EX commands.
 *
 * This function may be called recursively!
 *
 * return FAIL if file could not be opened, OK otherwise
 */
    int
do_source(fname, check_other, is_vimrc)
    char_u    *fname;
    int        check_other;        /* check for .vimrc and _vimrc */
    int        is_vimrc;        /* call vimrc_found() when file exists */
{
    struct source_cookie    cookie;
    char_u            *save_sourcing_name;
    linenr_T            save_sourcing_lnum;
    char_u            *p;
    char_u            *fname_exp;
    int                retval = FAIL;
#ifdef FEAT_EVAL
    scid_T            save_current_SID;
    static scid_T        last_current_SID = 0;
    void            *save_funccalp;
    int                save_debug_break_level = debug_break_level;
# ifdef UNIX
    struct stat            st;
    int                stat_ok;
# endif
#endif
#ifdef STARTUPTIME
    struct timeval        tv_rel;
    struct timeval        tv_start;
#endif

#ifdef RISCOS
    p = mch_munge_fname(fname);
#else
    p = expand_env_save(fname);
#endif
    if (p == NULL)
    return retval;
    fname_exp = fix_fname(p);
    vim_free(p);
    if (fname_exp == NULL)
    return retval;
#ifdef MACOS_CLASSIC
    slash_n_colon_adjust(fname_exp);
#endif
    if (mch_isdir(fname_exp))
    {
    msg_str((char_u *)_("Cannot source a directory: \"%s\""), fname);
    goto theend;
    }

    cookie.fp = mch_fopen((char *)fname_exp, READBIN);
    if (cookie.fp == NULL && check_other)
    {
    /*
     * Try again, replacing file name ".vimrc" by "_vimrc" or vice versa,
     * and ".exrc" by "_exrc" or vice versa.
     */
    p = gettail(fname_exp);
    if ((*p == '.' || *p == '_')
        && (STRICMP(p + 1, "vimrc") == 0
            || STRICMP(p + 1, "gvimrc") == 0
            || STRICMP(p + 1, "exrc") == 0))
    {
        if (*p == '_')
        *p = '.';
        else
        *p = '_';
        cookie.fp = mch_fopen((char *)fname_exp, READBIN);
    }
    }

    if (cookie.fp == NULL)
    {
    if (p_verbose > 0)
    {
        if (sourcing_name == NULL)
        msg_str((char_u *)_("could not source \"%s\""), fname);
        else
        smsg((char_u *)_("line %ld: could not source \"%s\""),
            sourcing_lnum, fname);
    }
    goto theend;
    }

    /*
     * The file exists.
     * - In verbose mode, give a message.
     * - For a vimrc file, may want to set 'compatible', call vimrc_found().
     */
    if (p_verbose > 1)
    {
    if (sourcing_name == NULL)
        msg_str((char_u *)_("sourcing \"%s\""), fname);
    else
        smsg((char_u *)_("line %ld: sourcing \"%s\""),
            sourcing_lnum, fname);
    }
    if (is_vimrc)
    vimrc_found();

#ifdef USE_CRNL
    /* If no automatic file format: Set default to CR-NL. */
    if (*p_ffs == NUL)
    cookie.fileformat = EOL_DOS;
    else
    cookie.fileformat = EOL_UNKNOWN;
    cookie.error = FALSE;
#endif

#ifdef USE_CR
    /* If no automatic file format: Set default to CR. */
    if (*p_ffs == NUL)
    cookie.fileformat = EOL_MAC;
    else
    cookie.fileformat = EOL_UNKNOWN;
    cookie.error = FALSE;
#endif

    cookie.nextline = NULL;
    cookie.finished = FALSE;

#ifdef FEAT_EVAL
    /*
     * Check if this script has a breakpoint.
     */
    cookie.breakpoint = dbg_find_breakpoint(TRUE, fname_exp, (linenr_T)0);
    cookie.fname = fname_exp;
    cookie.dbg_tick = debug_tick;

    cookie.level = ex_nesting_level;
#endif
#ifdef FEAT_MBYTE
    cookie.conv.vc_type = CONV_NONE;        /* no conversion */
#endif

    /*
     * Keep the sourcing name/lnum, for recursive calls.
     */
    save_sourcing_name = sourcing_name;
    sourcing_name = fname_exp;
    save_sourcing_lnum = sourcing_lnum;
    sourcing_lnum = 0;

#ifdef STARTUPTIME
    time_push(&tv_rel, &tv_start);
#endif

#ifdef FEAT_EVAL
    /*
     * Check if this script was sourced before to finds its SID.
     * If it's new, generate a new SID.
     */
    save_current_SID = current_SID;
# ifdef UNIX
    stat_ok = (mch_stat((char *)fname_exp, &st) >= 0);
# endif
    for (current_SID = script_names.ga_len; current_SID > 0; --current_SID)
    if (SCRIPT_NAME(current_SID) != NULL
        && (
# ifdef UNIX
            /* compare dev/ino when possible, it catches symbolic
             * links */
            (stat_ok && SCRIPT_DEV(current_SID) != -1)
            ? (SCRIPT_DEV(current_SID) == st.st_dev
                && SCRIPT_INO(current_SID) == st.st_ino) :
# endif
        fnamecmp(SCRIPT_NAME(current_SID), fname_exp) == 0))
        break;
    if (current_SID == 0)
    {
    current_SID = ++last_current_SID;
    if (ga_grow(&script_names, (int)(current_SID - script_names.ga_len))
                                    == OK)
    {
        while (script_names.ga_len < current_SID)
        {
        SCRIPT_NAME(script_names.ga_len + 1) = NULL;
        ++script_names.ga_len;
        --script_names.ga_room;
        }
        SCRIPT_NAME(current_SID) = fname_exp;
# ifdef UNIX
        if (stat_ok)
        {
        SCRIPT_DEV(current_SID) = st.st_dev;
        SCRIPT_INO(current_SID) = st.st_ino;
        }
        else
        SCRIPT_DEV(current_SID) = -1;
# endif
        fname_exp = NULL;
    }
    /* Allocate the local script variables to use for this script. */
    new_script_vars(current_SID);
    }

    /* Don't use local function variables, if called from a function */
    save_funccalp = save_funccal();
#endif

    /*
     * Call do_cmdline, which will call getsourceline() to get the lines.
     */
    do_cmdline(NULL, getsourceline, (void *)&cookie,
                     DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_REPEAT);

    retval = OK;
    fclose(cookie.fp);
    vim_free(cookie.nextline);
    if (got_int)
    EMSG(_(e_interr));
    sourcing_name = save_sourcing_name;
    sourcing_lnum = save_sourcing_lnum;
#ifdef FEAT_EVAL
    current_SID = save_current_SID;
    restore_funccal(save_funccalp);
#endif
    if (p_verbose > 1)
    {
    msg_str((char_u *)_("finished sourcing %s"), fname);
    if (sourcing_name != NULL)
        msg_str((char_u *)_("continuing in %s"), sourcing_name);
    }
#ifdef STARTUPTIME
# ifdef HAVE_SNPRINTF
    snprintf(IObuff, IOSIZE, "sourcing %s", fname);
# else
    sprintf(IObuff, "sourcing %s", fname);
# endif
    time_msg(IObuff, &tv_start);
    time_pop(&tv_rel);
#endif

#ifdef FEAT_EVAL
    /*
     * After a "finish" in debug mode, need to break at first command of next
     * sourced file.
     */
    if (save_debug_break_level > ex_nesting_level
        && debug_break_level == ex_nesting_level)
    ++debug_break_level;
#endif

theend:
    vim_free(fname_exp);
    return retval;
}

#if defined(FEAT_EVAL) || defined(PROTO)
/*
 * ":scriptnames"
 */
/*ARGSUSED*/
    void
ex_scriptnames(eap)
    exarg_T    *eap;
{
    int i;

    for (i = 1; i <= script_names.ga_len && !got_int; ++i)
    if (SCRIPT_NAME(i) != NULL)
        smsg((char_u *)"%3d: %s", i, SCRIPT_NAME(i));
}

# if defined(BACKSLASH_IN_FILENAME) || defined(PROTO)
/*
 * Fix slashes in the list of script names for 'shellslash'.
 */
    void
scriptnames_slash_adjust()
{
    int i;

    for (i = 1; i <= script_names.ga_len; ++i)
    if (SCRIPT_NAME(i) != NULL)
        slash_adjust(SCRIPT_NAME(i));
}
# endif

/*
 * Get a pointer to a script name.  Used for ":verbose set".
 */
    char_u *
get_scriptname(id)
    scid_T    id;
{
    if (id == SID_MODELINE)
    return (char_u *)"modeline";
    return SCRIPT_NAME(id);
}
#endif

#if defined(USE_CR) || defined(PROTO)

# if defined(__MSL__) && (__MSL__ >= 22)
/*
 * Newer version of the Metrowerks library handle DOS and UNIX files
 * without help.
 * Test with earlier versions, MSL 2.2 is the library supplied with
 * Codewarrior Pro 2.
 */
    char *
fgets_cr(s, n, stream)
    char    *s;
    int        n;
    FILE    *stream;
{
    return fgets(s, n, stream);
}
# else
/*
 * Version of fgets() which also works for lines ending in a <CR> only
 * (Macintosh format).
 * For older versions of the Metrowerks library.
 * At least CodeWarrior 9 needed this code.
 */
    char *
fgets_cr(s, n, stream)
    char    *s;
    int        n;
    FILE    *stream;
{
    int    c = 0;
    int char_read = 0;

    while (!feof(stream) && c != '\r' && c != '\n' && char_read < n - 1)
    {
    c = fgetc(stream);
    s[char_read++] = c;
    /* If the file is in DOS format, we need to skip a NL after a CR.  I
     * thought it was the other way around, but this appears to work... */
    if (c == '\n')
    {
        c = fgetc(stream);
        if (c != '\r')
        ungetc(c, stream);
    }
    }

    s[char_read] = 0;
    if (char_read == 0)
    return NULL;

    if (feof(stream) && char_read == 1)
    return NULL;

    return s;
}
# endif
#endif

/*
 * Get one full line from a sourced file.
 * Called by do_cmdline() when it's called from do_source().
 *
 * Return a pointer to the line in allocated memory.
 * Return NULL for end-of-file or some error.
 */
/* ARGSUSED */
    char_u *
getsourceline(c, cookie, indent)
    int        c;        /* not used */
    void    *cookie;
    int        indent;        /* not used */
{
    struct source_cookie *sp = (struct source_cookie *)cookie;
    char_u        *line;
    char_u        *p, *s;

#ifdef FEAT_EVAL
    /* If breakpoints have been added/deleted need to check for it. */
    if (sp->dbg_tick < debug_tick)
    {
    sp->breakpoint = dbg_find_breakpoint(TRUE, sp->fname, sourcing_lnum);
    sp->dbg_tick = debug_tick;
    }
#endif
    /*
     * Get current line.  If there is a read-ahead line, use it, otherwise get
     * one now.
     */
    if (sp->finished)
    line = NULL;
    else if (sp->nextline == NULL)
    line = get_one_sourceline(sp);
    else
    {
    line = sp->nextline;
    sp->nextline = NULL;
    ++sourcing_lnum;
    }

    /* Only concatenate lines starting with a \ when 'cpoptions' doesn't
     * contain the 'C' flag. */
    if (line != NULL && (vim_strchr(p_cpo, CPO_CONCAT) == NULL))
    {
    /* compensate for the one line read-ahead */
    --sourcing_lnum;
    for (;;)
    {
        sp->nextline = get_one_sourceline(sp);
        if (sp->nextline == NULL)
        break;
        p = skipwhite(sp->nextline);
        if (*p != '\\')
        break;
        s = alloc((int)(STRLEN(line) + STRLEN(p)));
        if (s == NULL)    /* out of memory */
        break;
        STRCPY(s, line);
        STRCAT(s, p + 1);
        vim_free(line);
        line = s;
        vim_free(sp->nextline);
    }
    }

#ifdef FEAT_MBYTE
    if (line != NULL && sp->conv.vc_type != CONV_NONE)
    {
    /* Convert the encoding of the script line. */
    s = string_convert(&sp->conv, line, NULL);
    if (s != NULL)
    {
        vim_free(line);
        line = s;
    }
    }
#endif

#ifdef FEAT_EVAL
    /* Did we encounter a breakpoint? */
    if (sp->breakpoint != 0 && sp->breakpoint <= sourcing_lnum)
    {
    dbg_breakpoint(sp->fname, sourcing_lnum);
    /* Find next breakpoint. */
    sp->breakpoint = dbg_find_breakpoint(TRUE, sp->fname, sourcing_lnum);
    sp->dbg_tick = debug_tick;
    }
#endif

    return line;
}

    static char_u *
get_one_sourceline(sp)
    struct source_cookie    *sp;
{
    garray_T        ga;
    int            len;
    int            c;
    char_u        *buf;
#ifdef USE_CRNL
    int            has_cr;        /* CR-LF found */
#endif
#ifdef USE_CR
    char_u        *scan;
#endif
    int            have_read = FALSE;

    /* use a growarray to store the sourced line */
    ga_init2(&ga, 1, 200);

    /*
     * Loop until there is a finished line (or end-of-file).
     */
    sourcing_lnum++;
    for (;;)
    {
    /* make room to read at least 80 (more) characters */
    if (ga_grow(&ga, 80) == FAIL)
        break;
    buf = (char_u *)ga.ga_data;

#ifdef USE_CR
    if (sp->fileformat == EOL_MAC)
    {
        if (fgets_cr((char *)buf + ga.ga_len, ga.ga_room, sp->fp) == NULL)
        break;
    }
    else
#endif
        if (fgets((char *)buf + ga.ga_len, ga.ga_room, sp->fp) == NULL)
        break;
    len = (int)STRLEN(buf);
#ifdef USE_CRNL
    /* Ignore a trailing CTRL-Z, when in Dos mode.    Only recognize the
     * CTRL-Z by its own, or after a NL. */
    if (       (len == 1 || (len >= 2 && buf[len - 2] == '\n'))
        && sp->fileformat == EOL_DOS
        && buf[len - 1] == Ctrl_Z)
    {
        buf[len - 1] = NUL;
        break;
    }
#endif

#ifdef USE_CR
    /* If the read doesn't stop on a new line, and there's
     * some CR then we assume a Mac format */
    if (sp->fileformat == EOL_UNKNOWN)
    {
        if (buf[len - 1] != '\n' && vim_strchr(buf, '\r') != NULL)
        sp->fileformat = EOL_MAC;
        else
        sp->fileformat = EOL_UNIX;
    }

    if (sp->fileformat == EOL_MAC)
    {
        scan = vim_strchr(buf, '\r');

        if (scan != NULL)
        {
        *scan = '\n';
        if (*(scan + 1) != 0)
        {
            *(scan + 1) = 0;
            fseek(sp->fp, (long)(scan - buf - len + 1), SEEK_CUR);
        }
        }
        len = STRLEN(buf);
    }
#endif

    have_read = TRUE;
    ga.ga_room -= len - ga.ga_len;
    ga.ga_len = len;

    /* If the line was longer than the buffer, read more. */
    if (ga.ga_room == 1 && buf[len - 1] != '\n')
        continue;

    if (len >= 1 && buf[len - 1] == '\n')    /* remove trailing NL */
    {
#ifdef USE_CRNL
        has_cr = (len >= 2 && buf[len - 2] == '\r');
        if (sp->fileformat == EOL_UNKNOWN)
        {
        if (has_cr)
            sp->fileformat = EOL_DOS;
        else
            sp->fileformat = EOL_UNIX;
        }

        if (sp->fileformat == EOL_DOS)
        {
        if (has_cr)        /* replace trailing CR */
        {
            buf[len - 2] = '\n';
            --len;
            --ga.ga_len;
            ++ga.ga_room;
        }
        else        /* lines like ":map xx yy^M" will have failed */
        {
            if (!sp->error)
            EMSG(_("W15: Warning: Wrong line separator, ^M may be missing"));
            sp->error = TRUE;
            sp->fileformat = EOL_UNIX;
        }
        }
#endif
        /* The '\n' is escaped if there is an odd number of ^V's just
         * before it, first set "c" just before the 'V's and then check
         * len&c parities (is faster than ((len-c)%2 == 0)) -- Acevedo */
        for (c = len - 2; c >= 0 && buf[c] == Ctrl_V; c--)
        ;
        if ((len & 1) != (c & 1))    /* escaped NL, read more */
        {
        sourcing_lnum++;
        continue;
        }

        buf[len - 1] = NUL;        /* remove the NL */
    }

    /*
     * Check for ^C here now and then, so recursive :so can be broken.
     */
    line_breakcheck();
    break;
    }

    if (have_read)
    return (char_u *)ga.ga_data;

    vim_free(ga.ga_data);
    return NULL;
}

/*
 * ":scriptencoding": Set encoding conversion for a sourced script.
 * Without the multi-byte feature it's simply ignored.
 */
/*ARGSUSED*/
    void
ex_scriptencoding(eap)
    exarg_T    *eap;
{
#ifdef FEAT_MBYTE
    struct source_cookie    *sp;
    char_u            *name;

    if (eap->getline != getsourceline)
    {
    EMSG(_("E167: :scriptencoding used outside of a sourced file"));
    return;
    }

    if (*eap->arg != NUL)
    {
    name = enc_canonize(eap->arg);
    if (name == NULL)    /* out of memory */
        return;
    }
    else
    name = eap->arg;

    /* Setup for conversion from the specified encoding to 'encoding'. */
    sp = (struct source_cookie *)eap->cookie;
    convert_setup(&sp->conv, name, p_enc);

    if (name != eap->arg)
    vim_free(name);
#endif
}

#if defined(FEAT_EVAL) || defined(PROTO)
/*
 * ":finish": Mark a sourced file as finished.
 */
    void
ex_finish(eap)
    exarg_T    *eap;
{
    if (eap->getline == getsourceline)
    do_finish(eap, FALSE);
    else
    EMSG(_("E168: :finish used outside of a sourced file"));
}

/*
 * Mark a sourced file as finished.  Possibly makes the ":finish" pending.
 * Also called for a pending finish at the ":endtry" or after returning from
 * an extra do_cmdline().  "reanimate" is used in the latter case.
 */
    void
do_finish(eap, reanimate)
    exarg_T    *eap;
    int        reanimate;
{
    int        idx;

    if (reanimate)
    ((struct source_cookie *)eap->cookie)->finished = FALSE;

    /*
     * Cleanup (and inactivate) conditionals, but stop when a try conditional
     * not in its finally clause (which then is to be executed next) is found.
     * In this case, make the ":finish" pending for execution at the ":endtry".
     * Otherwise, finish normally.
     */
    idx = cleanup_conditionals(eap->cstack, 0, TRUE);
    if (idx >= 0)
    {
    eap->cstack->cs_pending[idx] = CSTP_FINISH;
    report_make_pending(CSTP_FINISH, NULL);
    }
    else
    ((struct source_cookie *)eap->cookie)->finished = TRUE;
}


/*
 * Return TRUE when a sourced file had the ":finish" command: Don't give error
 * message for missing ":endif".
 */
    int
source_finished(cookie)
    void    *cookie;
{
    return ((struct source_cookie *)cookie)->finished == TRUE;
}
#endif

#if defined(FEAT_LISTCMDS) || defined(PROTO)
/*
 * ":checktime [buffer]"
 */
    void
ex_checktime(eap)
    exarg_T    *eap;
{
    buf_T    *buf;
    int        save_no_check_timestamps = no_check_timestamps;

    no_check_timestamps = 0;
    if (eap->addr_count == 0)    /* default is all buffers */
    check_timestamps(FALSE);
    else
    {
    buf = buflist_findnr((int)eap->line2);
    if (buf != NULL)    /* cannot happen? */
        (void)buf_check_timestamp(buf, FALSE);
    }
    no_check_timestamps = save_no_check_timestamps;
}
#endif

#if defined(FEAT_PRINTER) || defined(PROTO)
/*
 * Printing code (Machine-independent.)
 * To implement printing on a platform, the following functions must be
 * defined:
 *
 * int mch_print_init(prt_settings_T *psettings, char_u *jobname, int forceit)
 * Called once.  Code should display printer dialogue (if appropriate) and
 * determine printer font and margin settings.  Reset has_color if the printer
 * doesn't support colors at all.
 * Returns FAIL to abort.
 *
 * int mch_print_begin(prt_settings_T *settings)
 * Called to start the print job.
 * Return FALSE to abort.
 *
 * int mch_print_begin_page(char_u *msg)
 * Called at the start of each page.
 * "msg" indicates the progress of the print job, can be NULL.
 * Return FALSE to abort.
 *
 * int mch_print_end_page()
 * Called at the end of each page.
 * Return FALSE to abort.
 *
 * int mch_print_blank_page()
 * Called to generate a blank page for collated, duplex, multiple copy
 * document.  Return FALSE to abort.
 *
 * void mch_print_end(prt_settings_T *psettings)
 * Called at normal end of print job.
 *
 * void mch_print_cleanup()
 * Called if print job ends normally or is abandoned. Free any memory, close
 * devices and handles.  Also called when mch_print_begin() fails, but not
 * when mch_print_init() fails.
 *
 * void mch_print_set_font(int Bold, int Italic, int Underline);
 * Called whenever the font style changes.
 *
 * void mch_print_set_bg(long bgcol);
 * Called to set the background color for the following text. Parameter is an
 * RGB value.
 *
 * void mch_print_set_fg(long fgcol);
 * Called to set the foreground color for the following text. Parameter is an
 * RGB value.
 *
 * mch_print_start_line(int margin, int page_line)
 * Sets the current position at the start of line "page_line".
 * If margin is TRUE start in the left margin (for header and line number).
 *
 * int mch_print_text_out(char_u *p, int len);
 * Output one character of text p[len] at the current position.
 * Return TRUE if there is no room for another character in the same line.
 *
 * Note that the generic code has no idea of margins. The machine code should
 * simply make the page look smaller!  The header and the line numbers are
 * printed in the margin.
 */

#ifdef FEAT_SYN_HL
static const long_u  cterm_color_8[8] =
{
    (long_u)0x000000L, (long_u)0xff0000L, (long_u)0x00ff00L, (long_u)0xffff00L,
    (long_u)0x0000ffL, (long_u)0xff00ffL, (long_u)0x00ffffL, (long_u)0xffffffL
};

static const long_u  cterm_color_16[16] =
{
    (long_u)0x000000L, (long_u)0x0000c0L, (long_u)0x008000L, (long_u)0x004080L,
    (long_u)0xc00000L, (long_u)0xc000c0L, (long_u)0x808000L, (long_u)0xc0c0c0L,
    (long_u)0x808080L, (long_u)0x6060ffL, (long_u)0x00ff00L, (long_u)0x00ffffL,
    (long_u)0xff8080L, (long_u)0xff40ffL, (long_u)0xffff00L, (long_u)0xffffffL
};

static int        current_syn_id;
#endif

#define PRCOLOR_BLACK    (long_u)0
#define PRCOLOR_WHITE    (long_u)0xFFFFFFL

static int    curr_italic;
static int    curr_bold;
static int    curr_underline;
static long_u    curr_bg;
static long_u    curr_fg;
static int    page_count;

/*
 * These values determine the print position on a page.
 */
typedef struct
{
    int        lead_spaces;        /* remaining spaces for a TAB */
    int        print_pos;        /* virtual column for computing TABs */
    colnr_T    column;            /* byte column */
    linenr_T    file_line;        /* line nr in the buffer */
    long_u    bytes_printed;        /* bytes printed so far */
    int        ff;            /* seen form feed character */
} prt_pos_T;

#ifdef FEAT_SYN_HL
static long_u darken_rgb __ARGS((long_u rgb));
static long_u prt_get_term_color __ARGS((int colorindex));
#endif
static void prt_set_fg __ARGS((long_u fg));
static void prt_set_bg __ARGS((long_u bg));
static void prt_set_font __ARGS((int bold, int italic, int underline));
static void prt_line_number __ARGS((prt_settings_T *psettings, int page_line, linenr_T lnum));
static void prt_header __ARGS((prt_settings_T *psettings, int pagenum, linenr_T lnum));
static void prt_message __ARGS((char_u *s));
static colnr_T hardcopy_line __ARGS((prt_settings_T *psettings, int page_line, prt_pos_T *ppos));
static void prt_get_attr __ARGS((int hl_id, prt_text_attr_T* pattr, int modec));

#ifdef FEAT_SYN_HL
/*
 * If using a dark background, the colors will probably be too bright to show
 * up well on white paper, so reduce their brightness.
 */
    static long_u
darken_rgb(rgb)
    long_u    rgb;
{
    return    ((rgb >> 17) << 16)
        +    (((rgb & 0xff00) >> 9) << 8)
        +    ((rgb & 0xff) >> 1);
}

    static long_u
prt_get_term_color(colorindex)
    int        colorindex;
{
    /* TODO: Should check for xterm with 88 or 256 colors. */
    if (t_colors > 8)
    return cterm_color_16[colorindex % 16];
    return cterm_color_8[colorindex % 8];
}

    static void
prt_get_attr(hl_id, pattr, modec)
    int            hl_id;
    prt_text_attr_T*    pattr;
    int            modec;
{
    int     colorindex;
    long_u  fg_color;
    long_u  bg_color;
    char    *color;

    pattr->bold = (highlight_has_attr(hl_id, HL_BOLD, modec) != NULL);
    pattr->italic = (highlight_has_attr(hl_id, HL_ITALIC, modec) != NULL);
    pattr->underline = (highlight_has_attr(hl_id, HL_UNDERLINE, modec) != NULL);

# ifdef FEAT_GUI
    if (gui.in_use)
    {
    bg_color = highlight_gui_color_rgb(hl_id, FALSE);
    if (bg_color == PRCOLOR_BLACK)
        bg_color = PRCOLOR_WHITE;

    fg_color = highlight_gui_color_rgb(hl_id, TRUE);
    }
    else
# endif
    {
    bg_color = PRCOLOR_WHITE;

    color = (char *)highlight_color(hl_id, (char_u *)"fg", modec);
    if (color == NULL)
        colorindex = 0;
    else
        colorindex = atoi(color);

    if (colorindex >= 0 && colorindex < t_colors)
        fg_color = prt_get_term_color(colorindex);
    else
        fg_color = PRCOLOR_BLACK;
    }

    if (fg_color == PRCOLOR_WHITE)
    fg_color = PRCOLOR_BLACK;
    else if (*p_bg == 'd')
    fg_color = darken_rgb(fg_color);

    pattr->fg_color = fg_color;
    pattr->bg_color = bg_color;
}
#endif /* FEAT_SYN_HL */

    static void
prt_set_fg(fg)
    long_u fg;
{
    if (fg != curr_fg)
    {
    curr_fg = fg;
    mch_print_set_fg(fg);
    }
}

    static void
prt_set_bg(bg)
    long_u bg;
{
    if (bg != curr_bg)
    {
    curr_bg = bg;
    mch_print_set_bg(bg);
    }
}

    static void
prt_set_font(bold, italic, underline)
    int        bold;
    int        italic;
    int        underline;
{
    if (curr_bold != bold
        || curr_italic != italic
        || curr_underline != underline)
    {
    curr_underline = underline;
    curr_italic = italic;
    curr_bold = bold;
    mch_print_set_font(bold, italic, underline);
    }
}

/*
 * Print the line number in the left margin.
 */
    static void
prt_line_number(psettings, page_line, lnum)
    prt_settings_T *psettings;
    int        page_line;
    linenr_T    lnum;
{
    int        i;
    char_u    tbuf[20];

    prt_set_fg(psettings->number.fg_color);
    prt_set_bg(psettings->number.bg_color);
    prt_set_font(psettings->number.bold, psettings->number.italic, psettings->number.underline);
    mch_print_start_line(TRUE, page_line);

    /* Leave two spaces between the number and the text; depends on
     * PRINT_NUMBER_WIDTH. */
    sprintf((char *)tbuf, "%6ld", (long)lnum);
    for (i = 0; i < 6; i++)
    (void)mch_print_text_out(&tbuf[i], 1);

#ifdef FEAT_SYN_HL
    if (psettings->do_syntax)
    /* Set colors for next character. */
    current_syn_id = -1;
    else
#endif
    {
    /* Set colors and font back to normal. */
    prt_set_fg(PRCOLOR_BLACK);
    prt_set_bg(PRCOLOR_WHITE);
    prt_set_font(FALSE, FALSE, FALSE);
    }
}

static linenr_T printer_page_num;

    int
get_printer_page_num()
{
    return printer_page_num;
}

/*
 * Get the currently effective header height.
 */
    int
prt_header_height()
{
    if (printer_opts[OPT_PRINT_HEADERHEIGHT].present)
    return printer_opts[OPT_PRINT_HEADERHEIGHT].number;
    return 2;
}

/*
 * Return TRUE if using a line number for printing.
 */
    int
prt_use_number()
{
    return (printer_opts[OPT_PRINT_NUMBER].present
        && TOLOWER_ASC(printer_opts[OPT_PRINT_NUMBER].string[0]) == 'y');
}

/*
 * Return the unit used in a margin item in 'printoptions'.
 * Returns PRT_UNIT_NONE if not recognized.
 */
    int
prt_get_unit(idx)
    int        idx;
{
    int        u = PRT_UNIT_NONE;
    int        i;
    static char *(units[4]) = PRT_UNIT_NAMES;

    if (printer_opts[idx].present)
    for (i = 0; i < 4; ++i)
        if (STRNICMP(printer_opts[idx].string, units[i], 2) == 0)
        {
        u = i;
        break;
        }
    return u;
}

/*
 * Print the page header.
 */
/*ARGSUSED*/
    static void
prt_header(psettings, pagenum, lnum)
    prt_settings_T  *psettings;
    int        pagenum;
    linenr_T    lnum;
{
    int        width = psettings->chars_per_line;
    int        page_line;
    char_u    *tbuf;
    char_u    *p;
#ifdef FEAT_MBYTE
    int        l;
#endif

    /* Also use the space for the line number. */
    if (prt_use_number())
    width += PRINT_NUMBER_WIDTH;

    tbuf = alloc(width + IOSIZE);
    if (tbuf == NULL)
    return;

#ifdef FEAT_STL_OPT
    if (*p_header != NUL)
    {
    linenr_T    tmp_lnum, tmp_topline, tmp_botline;

    /*
     * Need to (temporarily) set current line number and first/last line
     * number on the 'window'.  Since we don't know how long the page is,
     * set the first and current line number to the top line, and guess
     * that the page length is 64.
     */
    tmp_lnum = curwin->w_cursor.lnum;
    tmp_topline = curwin->w_topline;
    tmp_botline = curwin->w_botline;
    curwin->w_cursor.lnum = lnum;
    curwin->w_topline = lnum;
    curwin->w_botline = lnum + 63;
    printer_page_num = pagenum;

    build_stl_str_hl(curwin, tbuf, (size_t)(width + IOSIZE),
                          p_header, ' ', width, NULL);

    /* Reset line numbers */
    curwin->w_cursor.lnum = tmp_lnum;
    curwin->w_topline = tmp_topline;
    curwin->w_botline = tmp_botline;
    }
    else
#endif
    sprintf((char *)tbuf, _("Page %d"), pagenum);

    prt_set_fg(PRCOLOR_BLACK);
    prt_set_bg(PRCOLOR_WHITE);
    prt_set_font(TRUE, FALSE, FALSE);

    /* Use a negative line number to indicate printing in the top margin. */
    page_line = 0 - prt_header_height();
    mch_print_start_line(TRUE, page_line);
    for (p = tbuf; *p != NUL; )
    {
    if (mch_print_text_out(p,
#ifdef FEAT_MBYTE
        (l = (*mb_ptr2len_check)(p))
#else
        1
#endif
            ))
    {
        ++page_line;
        if (page_line >= 0) /* out of room in header */
        break;
        mch_print_start_line(TRUE, page_line);
    }
#ifdef FEAT_MBYTE
    p += l;
#else
    p++;
#endif
    }

    vim_free(tbuf);

#ifdef FEAT_SYN_HL
    if (psettings->do_syntax)
    /* Set colors for next character. */
    current_syn_id = -1;
    else
#endif
    {
    /* Set colors and font back to normal. */
    prt_set_fg(PRCOLOR_BLACK);
    prt_set_bg(PRCOLOR_WHITE);
    prt_set_font(FALSE, FALSE, FALSE);
    }
}

/*
 * Display a print status message.
 */
    static void
prt_message(s)
    char_u    *s;
{
    screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0);
    screen_puts(s, (int)Rows - 1, 0, hl_attr(HLF_R));
    out_flush();
}

    void
ex_hardcopy(eap)
    exarg_T    *eap;
{
    linenr_T        lnum;
    int            collated_copies, uncollated_copies;
    prt_settings_T    settings;
    long_u        bytes_to_print = 0;
    int            page_line;
    int            jobsplit;
    int            id;

    memset(&settings, 0, sizeof(prt_settings_T));
    settings.has_color = TRUE;

# ifdef FEAT_POSTSCRIPT
    if (*eap->arg == '>')
    {
    char_u    *errormsg = NULL;

    /* Expand things like "%.ps". */
    if (expand_filename(eap, eap->cmdlinep, &errormsg) == FAIL)
    {
        if (errormsg != NULL)
        EMSG(errormsg);
        return;
    }
    settings.outfile = skipwhite(eap->arg + 1);
    }
    else if (*eap->arg != NUL)
    settings.arguments = eap->arg;
# endif

    /*
     * Initialise for printing.  Ask the user for settings, unless forceit is
     * set.
     * The mch_print_init() code should set up margins if applicable. (It may
     * not be a real printer - for example the engine might generate HTML or
     * PS.)
     */
    if (mch_print_init(&settings,
            curbuf->b_fname == NULL
                ? (char_u *)buf_spname(curbuf)
                : curbuf->b_sfname == NULL
                ? curbuf->b_fname
                : curbuf->b_sfname,
            eap->forceit) == FAIL)
    return;

#ifdef FEAT_SYN_HL
# ifdef  FEAT_GUI
    if (gui.in_use)
    settings.modec = 'g';
    else
# endif
    if (t_colors > 1)
        settings.modec = 'c';
    else
        settings.modec = 't';

    if (!syntax_present(curbuf))
    settings.do_syntax = FALSE;
    else if (printer_opts[OPT_PRINT_SYNTAX].present
        && TOLOWER_ASC(printer_opts[OPT_PRINT_SYNTAX].string[0]) != 'a')
    settings.do_syntax =
           (TOLOWER_ASC(printer_opts[OPT_PRINT_SYNTAX].string[0]) == 'y');
    else
    settings.do_syntax = settings.has_color;
#endif

    /* Set up printing attributes for line numbers */
    settings.number.fg_color = PRCOLOR_BLACK;
    settings.number.bg_color = PRCOLOR_WHITE;
    settings.number.bold = FALSE;
    settings.number.italic = TRUE;
    settings.number.underline = FALSE;
#ifdef FEAT_SYN_HL
    /*
     * Syntax highlighting of line numbers.
     */
    if (prt_use_number() && settings.do_syntax)
    {
    id = syn_name2id((char_u *)"LineNr");
    if (id > 0)
        id = syn_get_final_id(id);

    prt_get_attr(id, &settings.number, settings.modec);
    }
#endif /* FEAT_SYN_HL */

    /*
     * Estimate the total lines to be printed
     */
    for (lnum = eap->line1; lnum <= eap->line2; lnum++)
    bytes_to_print += (long_u)STRLEN(skipwhite(ml_get(lnum)));
    if (bytes_to_print == 0)
    {
    MSG(_("No text to be printed"));
    goto print_fail_no_begin;
    }

    /* Set colors and font to normal. */
    curr_bg = (long_u)0xffffffffL;
    curr_fg = (long_u)0xffffffffL;
    curr_italic = MAYBE;
    curr_bold = MAYBE;
    curr_underline = MAYBE;

    prt_set_fg(PRCOLOR_BLACK);
    prt_set_bg(PRCOLOR_WHITE);
    prt_set_font(FALSE, FALSE, FALSE);
#ifdef FEAT_SYN_HL
    current_syn_id = -1;
#endif

    jobsplit = (printer_opts[OPT_PRINT_JOBSPLIT].present
       && TOLOWER_ASC(printer_opts[OPT_PRINT_JOBSPLIT].string[0]) == 'y');

    if (!mch_print_begin(&settings))
    goto print_fail_no_begin;

    /*
     * Loop over collated copies: 1 2 3, 1 2 3, ...
     */
    page_count = 0;
    for (collated_copies = 0;
        collated_copies < settings.n_collated_copies;
        collated_copies++)
    {
    prt_pos_T    prtpos;        /* current print position */
    prt_pos_T    page_prtpos;    /* print position at page start */
    int        side;

    memset(&page_prtpos, 0, sizeof(prt_pos_T));
    page_prtpos.file_line = eap->line1;
    prtpos = page_prtpos;

    if (jobsplit && collated_copies > 0)
    {
        /* Splitting jobs: Stop a previous job and start a new one. */
        mch_print_end(&settings);
        if (!mch_print_begin(&settings))
        goto print_fail_no_begin;
    }

    /*
     * Loop over all pages in the print job: 1 2 3 ...
     */
    for (page_count = 0; prtpos.file_line <= eap->line2; ++page_count)
    {
        /*
         * Loop over uncollated copies: 1 1 1, 2 2 2, 3 3 3, ...
         * For duplex: 12 12 12 34 34 34, ...
         */
        for (uncollated_copies = 0;
            uncollated_copies < settings.n_uncollated_copies;
            uncollated_copies++)
        {
        /* Set the print position to the start of this page. */
        prtpos = page_prtpos;

        /*
         * Do front and rear side of a page.
         */
        for (side = 0; side <= settings.duplex; ++side)
        {
            /*
             * Print one page.
             */

            /* Check for interrupt character every page. */
            ui_breakcheck();
            if (got_int || settings.user_abort)
            goto print_fail;

            sprintf((char *)IObuff, _("Printing page %d (%d%%)"),
                page_count + 1 + side,
                (int)((prtpos.bytes_printed * 100)
                               / bytes_to_print));
            if (!mch_print_begin_page(IObuff))
            goto print_fail;

            if (settings.n_collated_copies > 1)
            sprintf((char *)IObuff + STRLEN(IObuff),
                _(" Copy %d of %d"),
                collated_copies + 1,
                settings.n_collated_copies);
            prt_message(IObuff);

            /*
             * Output header if required
             */
            if (prt_header_height() > 0)
            prt_header(&settings, page_count + 1 + side,
                            prtpos.file_line);

            for (page_line = 0; page_line < settings.lines_per_page;
                                  ++page_line)
            {
            prtpos.column = hardcopy_line(&settings,
                               page_line, &prtpos);
            if (prtpos.column == 0)
            {
                /* finished a file line */
                prtpos.bytes_printed +=
                  STRLEN(skipwhite(ml_get(prtpos.file_line)));
                if (++prtpos.file_line > eap->line2)
                break; /* reached the end */
            }
            else if (prtpos.ff)
            {
                /* Line had a formfeed in it - start new page but
                 * stay on the current line */
                break;
            }
            }

            if (!mch_print_end_page())
            goto print_fail;
            if (prtpos.file_line > eap->line2)
            break; /* reached the end */
        }

        /*
         * Extra blank page for duplexing with odd number of pages and
         * more copies to come.
         */
        if (prtpos.file_line > eap->line2 && settings.duplex
                                 && side == 0
            && uncollated_copies + 1 < settings.n_uncollated_copies)
        {
            if (!mch_print_blank_page())
            goto print_fail;
        }
        }
        if (settings.duplex && prtpos.file_line <= eap->line2)
        ++page_count;

        /* Remember the position where the next page starts. */
        page_prtpos = prtpos;
    }

    sprintf((char *)IObuff, _("Printed: %s"), settings.jobname);
    prt_message(IObuff);
    }

print_fail:
    if (got_int || settings.user_abort)
    {
    sprintf((char *)IObuff, _("Printing aborted"));
    prt_message(IObuff);
    }
    mch_print_end(&settings);

print_fail_no_begin:
    mch_print_cleanup();
}

/*
 * Print one page line.
 * Return the next column to print, or zero if the line is finished.
 */
    static colnr_T
hardcopy_line(psettings, page_line, ppos)
    prt_settings_T    *psettings;
    int            page_line;
    prt_pos_T        *ppos;
{
    colnr_T    col;
    char_u    *line;
    int        need_break = FALSE;
    int        outputlen;
    int        tab_spaces;
    long_u    print_pos;
#ifdef FEAT_SYN_HL
    prt_text_attr_T attr;
    int        id;
#endif

    if (ppos->column == 0 || ppos->ff)
    {
    print_pos = 0;
    tab_spaces = 0;
    if (!ppos->ff && prt_use_number())
        prt_line_number(psettings, page_line, ppos->file_line);
    ppos->ff = FALSE;
    }
    else
    {
    /* left over from wrap halfway a tab */
    print_pos = ppos->print_pos;
    tab_spaces = ppos->lead_spaces;
    }

    mch_print_start_line(0, page_line);
    line = ml_get(ppos->file_line);

    /*
     * Loop over the columns until the end of the file line or right margin.
     */
    for (col = ppos->column; line[col] != NUL && !need_break; col += outputlen)
    {
    outputlen = 1;
#ifdef FEAT_MBYTE
    if (has_mbyte && (outputlen = (*mb_ptr2len_check)(line + col)) < 1)
        outputlen = 1;
#endif
#ifdef FEAT_SYN_HL
    /*
     * syntax highlighting stuff.
     */
    if (psettings->do_syntax)
    {
        id = syn_get_id(ppos->file_line, (long)col, 1);
        if (id > 0)
        id = syn_get_final_id(id);
        else
        id = 0;
        /* Get the line again, a multi-line regexp may invalidate it. */
        line = ml_get(ppos->file_line);

        if (id != current_syn_id)
        {
        current_syn_id = id;
        prt_get_attr(id, &attr, psettings->modec);
        prt_set_font(attr.bold, attr.italic, attr.underline);
        prt_set_fg(attr.fg_color);
        prt_set_bg(attr.bg_color);
        }
    }
#endif /* FEAT_SYN_HL */

    /*
     * Appropriately expand any tabs to spaces.
     */
    if (line[col] == TAB || tab_spaces != 0)
    {
        if (tab_spaces == 0)
        tab_spaces = curbuf->b_p_ts - (print_pos % curbuf->b_p_ts);

        while (tab_spaces > 0)
        {
        need_break = mch_print_text_out((char_u *)" ", 1);
        print_pos++;
        tab_spaces--;
        if (need_break)
            break;
        }
        /* Keep the TAB if we didn't finish it. */
        if (need_break && tab_spaces > 0)
        break;
    }
    else if (line[col] == FF
        && printer_opts[OPT_PRINT_FORMFEED].present
        && TOLOWER_ASC(printer_opts[OPT_PRINT_FORMFEED].string[0])
                                       == 'y')
    {
        ppos->ff = TRUE;
        need_break = 1;
    }
    else
    {
        need_break = mch_print_text_out(line + col, outputlen);
#ifdef FEAT_MBYTE
        if (has_mbyte)
        print_pos += (*mb_ptr2cells)(line + col);
        else
#endif
        print_pos++;
    }
    }

    ppos->lead_spaces = tab_spaces;
    ppos->print_pos = print_pos;

    /*
     * Start next line of file if we clip lines, or have reached end of the
     * line, unless we are doing a formfeed.
     */
    if (!ppos->ff
        && (line[col] == NUL
        || (printer_opts[OPT_PRINT_WRAP].present
            && TOLOWER_ASC(printer_opts[OPT_PRINT_WRAP].string[0])
                                     == 'n')))
    return 0;
    return col;
}

# if defined(FEAT_POSTSCRIPT) || defined(PROTO)

/*
 * PS printer stuff.
 *
 * Sources of information to help maintain the PS printing code:
 *
 * 1. PostScript Language Reference, 3rd Edition,
 *      Addison-Wesley, 1999, ISBN 0-201-37922-8
 * 2. PostScript Language Program Design,
 *      Addison-Wesley, 1988, ISBN 0-201-14396-8
 * 3. PostScript Tutorial and Cookbook,
 *      Addison Wesley, 1985, ISBN 0-201-10179-3
 * 4. PostScript Language Document Structuring Conventions Specification,
 *    version 3.0,
 *      Adobe Technote 5001, 25th September 1992
 * 5. PostScript Printer Description File Format Specification, Version 4.3,
 *      Adobe technote 5003, 9th February 1996
 * 6. Adobe Font Metrics File Format Specification, Version 4.1,
 *      Adobe Technote 5007, 7th October 1998
 *
 * Some of these documents can be found in PDF form on Adobe's web site -
 * http://www.adobe.com
 */

#define PRT_PS_DEFAULT_DPI        (72)    /* Default user space resolution */
#define PRT_PS_DEFAULT_FONTSIZE     (10)
#define PRT_PS_DEFAULT_BUFFER_SIZE  (80)

struct prt_mediasize_S
{
    char    *name;
    float    width;        /* width and height in points for portrait */
    float    height;
};

#define PRT_MEDIASIZE_LEN  (sizeof(prt_mediasize) / sizeof(struct prt_mediasize_S))

static struct prt_mediasize_S prt_mediasize[] =
{
    {"A4",        595.0,  842.0},
    {"letter",        612.0,  792.0},
    {"10x14",        720.0, 1008.0},
    {"A3",        842.0, 1191.0},
    {"A5",        420.0,  595.0},
    {"B4",        729.0, 1032.0},
    {"B5",        516.0,  729.0},
    {"executive",    522.0,  756.0},
    {"folio",        595.0,  935.0},
    {"ledger",           1224.0,  792.0},   /* Yes, it is wider than taller! */
    {"legal",        612.0, 1008.0},
    {"quarto",        610.0,  780.0},
    {"statement",    396.0,  612.0},
    {"tabloid",        792.0, 1224.0}
};

/* PS font names, must be in Roman, Bold, Italic, Bold-Italic order */
struct prt_ps_font_S
{
    int        wx;
    int        uline_offset;
    int        uline_width;
    int        bbox_min_y;
    int        bbox_max_y;
    char    *(ps_fontname[4]);
};

#define PRT_PS_FONT_ROMAN    (0)
#define PRT_PS_FONT_BOLD    (1)
#define PRT_PS_FONT_OBLIQUE    (2)
#define PRT_PS_FONT_BOLDOBLIQUE (3)

static struct prt_ps_font_S prt_ps_font =
{
    600,
    -100, 50,
    -250, 805,
    {"Courier", "Courier-Bold", "Courier-Oblique", "Courier-BoldOblique"}
};

struct prt_ps_resource_S
{
    char_u  name[64];
    char_u  filename[MAXPATHL + 1];
    int     type;
    char_u  title[256];
    char_u  version[256];
};

/* Types of PS resource file currently used */
#define PRT_RESOURCE_TYPE_PROCSET   (0)
#define PRT_RESOURCE_TYPE_ENCODING  (1)

/* The PS prolog file version number has to match - if the prolog file is
 * updated, increment the number in the file and here.  Version checking was
 * added as of VIM 6.2.
 * Table of VIM and prolog versions:
 *
 * VIM      Prolog
 * 6.2      1.3
 */
#define PRT_PROLOG_VERSION  ((char_u *)"1.3")

/* String versions of PS resource types - indexed by constants above so don't
 * re-order!
 */
static char *resource_types[] =
{
    "procset",
    "encoding"
};

/* Strings to look for in a PS resource file */
#define PRT_RESOURCE_HEADER        "%!PS-Adobe-"
#define PRT_RESOURCE_RESOURCE        "Resource-"
#define PRT_RESOURCE_PROCSET        "ProcSet"
#define PRT_RESOURCE_ENCODING        "Encoding"
#define PRT_RESOURCE_TITLE        "%%Title:"
#define PRT_RESOURCE_VERSION        "%%Version:"

static void prt_write_file_raw_len __ARGS((char_u *buffer, int bytes));
static void prt_write_file __ARGS((char_u *buffer));
static void prt_write_file_len __ARGS((char_u *buffer, int bytes));
static void prt_write_string __ARGS((char *s));
static void prt_write_int __ARGS((int i));
static void prt_write_boolean __ARGS((int b));
static void prt_def_font __ARGS((char *new_name, char *encoding, int height, char *font));
static void prt_real_bits __ARGS((double real, int precision, int *pinteger, int *pfraction));
static void prt_write_real __ARGS((double val, int prec));
static void prt_def_var __ARGS((char *name, double value, int prec));
static void prt_flush_buffer __ARGS((void));
static void prt_resource_name __ARGS((char_u *filename));
static int prt_find_resource __ARGS((char *name, struct prt_ps_resource_S *resource));
static int prt_open_resource __ARGS((struct prt_ps_resource_S *resource));
static int prt_check_resource __ARGS((struct prt_ps_resource_S *resource, char_u *version));
static void prt_dsc_start __ARGS((void));
static void prt_dsc_noarg __ARGS((char *comment));
static void prt_dsc_textline __ARGS((char *comment, char *text));
static void prt_dsc_text __ARGS((char *comment, char *text));
static void prt_dsc_ints __ARGS((char *comment, int count, int *ints));
static void prt_dsc_requirements __ARGS((int duplex, int tumble, int collate, int color, int num_copies));
static void prt_dsc_docmedia __ARGS((char *paper_name, double width, double height, double weight, char *colour, char *type));
static void prt_dsc_resources __ARGS((char *comment, char *type, int count, char **strings));
static float to_device_units __ARGS((int idx, double physsize, int def_number));
static void prt_page_margins __ARGS((double width, double height, double *left, double *right, double *top, double *bottom));
static void prt_font_metrics __ARGS((int font_scale));
static int prt_get_cpl __ARGS((void));
static int prt_get_lpp __ARGS((void));
static int prt_add_resource __ARGS((struct prt_ps_resource_S *resource));

/*
 * Variables for the output PostScript file.
 */
static FILE *prt_ps_fd;
static int prt_file_error;
static char_u *prt_ps_file_name = NULL;

/*
 * Various offsets and dimensions in default PostScript user space (points).
 * Used for text positioning calculations
 */
static float prt_page_width;
static float prt_page_height;
static float prt_left_margin;
static float prt_right_margin;
static float prt_top_margin;
static float prt_bottom_margin;
static float prt_line_height;
static float prt_first_line_height;
static float prt_char_width;
static float prt_number_width;
static float prt_bgcol_offset;
static float prt_pos_x_moveto = 0.0;
static float prt_pos_y_moveto = 0.0;

/*
 * Various control variables used to decide when and how to change the
 * PostScript graphics state.
 */
static int prt_need_moveto;
static int prt_do_moveto;
static int prt_need_font;
static int prt_font;
static int prt_need_underline;
static int prt_underline;
static int prt_do_underline;
static int prt_need_fgcol;
static int prt_fgcol;
static int prt_need_bgcol;
static int prt_do_bgcol;
static int prt_bgcol;
static int prt_new_bgcol;
static int prt_attribute_change;
static int prt_text_count;
static int prt_page_num;

/*
 * Variables controlling physical printing.
 */
static int prt_media;
static int prt_portrait;
static int prt_num_copies;
static int prt_duplex;
static int prt_tumble;
static int prt_collate;

/*
 * Buffers used when generating PostScript output
 */
static char_u prt_line_buffer[257];
static garray_T prt_ps_buffer;

# ifdef FEAT_MBYTE
static int prt_do_conv;
static vimconv_T prt_conv;
# endif

    static void
prt_write_file_raw_len(buffer, bytes)
    char_u    *buffer;
    int        bytes;
{
    if (!prt_file_error
        && fwrite(buffer, sizeof(char_u), bytes, prt_ps_fd)
                                 != (size_t)bytes)
    {
    EMSG(_("E455: Error writing to PostScript output file"));
    prt_file_error = TRUE;
    }
}

    static void
prt_write_file(buffer)
    char_u    *buffer;
{
    prt_write_file_len(buffer, STRLEN(buffer));
}

    static void
prt_write_file_len(buffer, bytes)
    char_u    *buffer;
    int        bytes;
{
#ifdef EBCDIC
    ebcdic2ascii(buffer, bytes);
#endif
    prt_write_file_raw_len(buffer, bytes);
}

/*
 * Write a string.
 */
    static void
prt_write_string(s)
    char    *s;
{
    sprintf((char *)prt_line_buffer, "%s", s);
    prt_write_file(prt_line_buffer);
}

/*
 * Write an int and a space.
 */
    static void
prt_write_int(i)
    int        i;
{
    sprintf((char *)prt_line_buffer, "%d ", i);
    prt_write_file(prt_line_buffer);
}

/*
 * Write a boolean and a space.
 */
    static void
prt_write_boolean(b)
    int        b;
{
    sprintf((char *)prt_line_buffer, "%s ", (b ? "T" : "F"));
    prt_write_file(prt_line_buffer);
}

/*
 * Write a line to define the font.
 */
    static void
prt_def_font(new_name, encoding, height, font)
    char    *new_name;
    char    *encoding;
    int        height;
    char    *font;
{
    sprintf((char *)prt_line_buffer, "/_%s /VIM-%s /%s ref\n", new_name, encoding, font);
    prt_write_file(prt_line_buffer);
    sprintf((char *)prt_line_buffer, "/%s %d /_%s ffs\n",
                            new_name, height, new_name);
    prt_write_file(prt_line_buffer);
}

/*
 * Convert a real value into an integer and fractional part as integers, with
 * the fractional part being in the range [0,10^precision).  The fractional part
 * is also rounded based on the precision + 1'th fractional digit.
 */
    static void
prt_real_bits(real, precision, pinteger, pfraction)
    double      real;
    int        precision;
    int        *pinteger;
    int        *pfraction;
{
    int     i;
    int     integer;
    float   fraction;

    integer = (int)real;
    fraction = (float)(real - integer);
    if (real < (double)integer)
    fraction = -fraction;
    for (i = 0; i < precision; i++)
    fraction *= 10.0;

    *pinteger = integer;
    *pfraction = (int)(fraction + 0.5);
}

/*
 * Write a real and a space.  Save bytes if real value has no fractional part!
 * We use prt_real_bits() as %f in sprintf uses the locale setting to decide
 * what decimal point character to use, but PS always requires a '.'.
 */
    static void
prt_write_real(val, prec)
    double    val;
    int        prec;
{
    int     integer;
    int     fraction;

    prt_real_bits(val, prec, &integer, &fraction);
    /* Emit integer part */
    sprintf((char *)prt_line_buffer, "%d", integer);
    prt_write_file(prt_line_buffer);
    /* Only emit fraction if necessary */
    if (fraction != 0)
    {
    /* Remove any trailing zeros */
    while ((fraction % 10) == 0)
    {
        prec--;
        fraction /= 10;
    }
    /* Emit fraction left padded with zeros */
    sprintf((char *)prt_line_buffer, ".%0*d", prec, fraction);
    prt_write_file(prt_line_buffer);
    }
    sprintf((char *)prt_line_buffer, " ");
    prt_write_file(prt_line_buffer);
}

/*
 * Write a line to define a numeric variable.
 */
    static void
prt_def_var(name, value, prec)
    char    *name;
    double    value;
    int        prec;
{
    sprintf((char *)prt_line_buffer, "/%s ", name);
    prt_write_file(prt_line_buffer);
    prt_write_real(value, prec);
    sprintf((char *)prt_line_buffer, "d\n");
    prt_write_file(prt_line_buffer);
}

/* Convert size from font space to user space at current font scale */
#define PRT_PS_FONT_TO_USER(scale, size)    ((size) * ((scale)/1000.0))

    static void
prt_flush_buffer()
{
    if (prt_ps_buffer.ga_len > 0)
    {
    /* Any background color must be drawn first */
    if (prt_do_bgcol && (prt_new_bgcol != PRCOLOR_WHITE))
    {
        int     r, g, b;

        if (prt_do_moveto)
        {
        prt_write_real(prt_pos_x_moveto, 2);
        prt_write_real(prt_pos_y_moveto, 2);
        prt_write_string("m\n");
        prt_do_moveto = FALSE;
        }

        /* Size of rect of background color on which text is printed */
        prt_write_real(prt_text_count * prt_char_width, 2);
        prt_write_real(prt_line_height, 2);

        /* Lastly add the color of the background */
        r = ((unsigned)prt_new_bgcol & 0xff0000) >> 16;
        g = ((unsigned)prt_new_bgcol & 0xff00) >> 8;
        b = prt_new_bgcol & 0xff;
        prt_write_real(r / 255.0, 3);
        prt_write_real(g / 255.0, 3);
        prt_write_real(b / 255.0, 3);
        prt_write_string("bg\n");
    }
    /* Draw underlines before the text as it makes it slightly easier to
     * find the starting point.
     */
    if (prt_do_underline)
    {
        if (prt_do_moveto)
        {
        prt_write_real(prt_pos_x_moveto, 2);
        prt_write_real(prt_pos_y_moveto, 2);
        prt_write_string("m\n");
        prt_do_moveto = FALSE;
        }

        /* Underlining is easy - just need the number of characters to
         * print. */
        prt_write_real(prt_text_count * prt_char_width, 2);
        prt_write_string("ul\n");
    }
    /* Draw the text
     * Note: we write text out raw - EBCDIC conversion is handled in the
     * PostScript world via the font encoding vector. */
    prt_write_string("(");
    prt_write_file_raw_len(prt_ps_buffer.ga_data, prt_ps_buffer.ga_len);
    prt_write_string(")");
    /* Add a moveto if need be and use the appropriate show procedure */
    if (prt_do_moveto)
    {
        prt_write_real(prt_pos_x_moveto, 2);
        prt_write_real(prt_pos_y_moveto, 2);
        /* moveto and a show */
        prt_write_string("ms\n");
        prt_do_moveto = FALSE;
    }
    else /* Simple show */
        prt_write_string("s\n");

    ga_clear(&prt_ps_buffer);
    ga_init2(&prt_ps_buffer, (int)sizeof(char), PRT_PS_DEFAULT_BUFFER_SIZE);
    }
}

static char_u *resource_filename;

    static void
prt_resource_name(filename)
    char_u  *filename;
{
    if (STRLEN(filename) >= MAXPATHL)
    *resource_filename = NUL;
    else
    STRCPY(resource_filename, filename);
}

    static int
prt_find_resource(name, resource)
    char    *name;
    struct prt_ps_resource_S *resource;
{
    char_u    buffer[MAXPATHL + 1];

    STRCPY(resource->name, name);
    /* Look for named resource file in runtimepath */
    STRCPY(buffer, "print");
    add_pathsep(buffer);
    STRCAT(buffer, name);
    STRCAT(buffer, ".ps");
    resource_filename = resource->filename;
    *resource_filename = NUL;
    return (do_in_runtimepath(buffer, FALSE, prt_resource_name)
        && resource->filename[0] != NUL);
}

/* PS CR and LF characters have platform independent values */
#define PSLF  (0x0a)
#define PSCR  (0x0d)

/* Very simple hand crafted parser to get the type, title, and version number of
 * a PS resource file so the file details can be added to the DSC header
 * comments. */
    static int
prt_open_resource(resource)
    struct prt_ps_resource_S *resource;
{
    FILE    *fd_resource;
    char_u    buffer[128];
    char_u    *ch = buffer;
    char_u    *ch2;

    fd_resource = mch_fopen((char *)resource->filename, READBIN);
    if (fd_resource == NULL)
    {
    EMSG2(_("E624: Can't open file \"%s\""), resource->filename);
    return FALSE;
    }
    vim_memset(buffer, NUL, sizeof(buffer));

    /* Parse first line to ensure valid resource file */
    (void)fread((char *)buffer, sizeof(char_u), sizeof(buffer),
                                 fd_resource);
    if (ferror(fd_resource))
    {
    EMSG2(_("E457: Can't read PostScript resource file \"%s\""),
        resource->filename);
    fclose(fd_resource);
    return FALSE;
    }

    if (STRNCMP(ch, PRT_RESOURCE_HEADER, STRLEN(PRT_RESOURCE_HEADER)) != 0)
    {
    EMSG2(_("E618: file \"%s\" is not a PostScript resource file"),
        resource->filename);
    fclose(fd_resource);
    return FALSE;
    }

    /* Skip over any version numbers and following ws */
    ch += STRLEN(PRT_RESOURCE_HEADER);
    while (!isspace(*ch))
    ch++;
    while (isspace(*ch))
    ch++;

    if (STRNCMP(ch, PRT_RESOURCE_RESOURCE, STRLEN(PRT_RESOURCE_RESOURCE)) != 0)
    {
    EMSG2(_("E619: file \"%s\" is not a supported PostScript resource file"),
        resource->filename);
    fclose(fd_resource);
    return FALSE;
    }
    ch += STRLEN(PRT_RESOURCE_RESOURCE);

    /* Decide type of resource in the file */
    if (STRNCMP(ch, PRT_RESOURCE_PROCSET, STRLEN(PRT_RESOURCE_PROCSET)) == 0)
    {
    resource->type = PRT_RESOURCE_TYPE_PROCSET;
    ch += STRLEN(PRT_RESOURCE_PROCSET);
    }
    else if (STRNCMP(ch, PRT_RESOURCE_ENCODING, STRLEN(PRT_RESOURCE_ENCODING)) == 0)
    {
    resource->type = PRT_RESOURCE_TYPE_ENCODING;
    ch += STRLEN(PRT_RESOURCE_ENCODING);
    }
    else
    {
    EMSG2(_("E619: file \"%s\" is not a supported PostScript resource file"),
        resource->filename);
    fclose(fd_resource);
    return FALSE;
    }

    /* Consume up to and including the CR/LF/CR_LF */
    while (*ch != PSCR && *ch != PSLF)
    ch++;
    while (*ch == PSCR || *ch == PSLF)
    ch++;

    /* Match %%Title: */
    if (STRNCMP(ch, PRT_RESOURCE_TITLE, STRLEN(PRT_RESOURCE_TITLE)) != 0)
    {
    EMSG2(_("E619: file \"%s\" is not a supported PostScript resource file"),
        resource->filename);
    fclose(fd_resource);
    return FALSE;
    }
    ch += STRLEN(PRT_RESOURCE_TITLE);

    /* Skip ws after %%Title: */
    while (isspace(*ch))
    ch++;

    /* Copy up to the CR/LF/CR_LF */
    ch2 = resource->title;
    while (*ch != PSCR && *ch != PSLF)
    *ch2++ = *ch++;
    *ch2 = '\0';
    while (*ch == PSCR || *ch == PSLF)
    ch++;

    /* Match %%Version: */
    if (STRNCMP(ch, PRT_RESOURCE_VERSION, STRLEN(PRT_RESOURCE_VERSION)) != 0)
    {
    EMSG2(_("E619: file \"%s\" is not a supported PostScript resource file"),
        resource->filename);
    fclose(fd_resource);
    return FALSE;
    }
    ch += STRLEN(PRT_RESOURCE_VERSION);

    /* Skip ws after %%Version: */
    while (isspace(*ch))
    ch++;

    /* Copy up to the CR/LF/CR_LF */
    ch2 = resource->version;
    while (*ch != PSCR && *ch != PSLF)
    *ch2++ = *ch++;
    *ch2 = '\0';

    fclose(fd_resource);

    return TRUE;
}

    static int
prt_check_resource(resource, version)
    struct prt_ps_resource_S *resource;
    char_u  *version;
{
    /* Version number m.n should match, the revision number does not matter */
    if (STRNCMP(resource->version, version, STRLEN(version)))
    {
    EMSG2(_("E621: \"%s\" resource file has wrong version"),
        resource->name);
    return FALSE;
    }

    /* Other checks to be added as needed */
    return TRUE;
}

    static void
prt_dsc_start()
{
    prt_write_string("%!PS-Adobe-3.0\n");
}

    static void
prt_dsc_noarg(comment)
    char    *comment;
{
    sprintf((char *)prt_line_buffer, "%%%%%s\n", comment);
    prt_write_file(prt_line_buffer);
}

    static void
prt_dsc_textline(comment, text)
    char    *comment;
    char    *text;
{
    sprintf((char *)prt_line_buffer, "%%%%%s: %s\n", comment, text);
    prt_write_file(prt_line_buffer);
}

    static void
prt_dsc_text(comment, text)
    char    *comment;
    char    *text;
{
    /* TODO - should scan 'text' for any chars needing escaping! */
    sprintf((char *)prt_line_buffer, "%%%%%s: (%s)\n", comment, text);
    prt_write_file(prt_line_buffer);
}

#define prt_dsc_atend(c)    prt_dsc_text((c), "atend")

    static void
prt_dsc_ints(comment, count, ints)
    char    *comment;
    int        count;
    int        *ints;
{
    int        i;

    sprintf((char *)prt_line_buffer, "%%%%%s:", comment);
    prt_write_file(prt_line_buffer);

    for (i = 0; i < count; i++)
    {
    sprintf((char *)prt_line_buffer, " %d", ints[i]);
    prt_write_file(prt_line_buffer);
    }

    prt_write_string("\n");
}

    static void
prt_dsc_resources(comment, type, count, strings)
    char    *comment;    /* if NULL add to previous */
    char    *type;
    int        count;
    char    **strings;
{
    int        i;

    if (comment != NULL)
    sprintf((char *)prt_line_buffer, "%%%%%s: %s", comment, type);
    else
    sprintf((char *)prt_line_buffer, "%%%%+ %s", type);
    prt_write_file(prt_line_buffer);

    for (i = 0; i < count; i++)
    {
    sprintf((char *)prt_line_buffer, " %s", strings[i]);
    prt_write_file(prt_line_buffer);
    }

    prt_write_string("\n");
}

    static void
prt_dsc_requirements(duplex, tumble, collate, color, num_copies)
    int        duplex;
    int        tumble;
    int        collate;
    int        color;
    int        num_copies;
{
    /* Only output the comment if we need to.
     * Note: tumble is ignored if we are not duplexing
     */
    if (!(duplex || collate || color || (num_copies > 1)))
    return;

    sprintf((char *)prt_line_buffer, "%%%%Requirements:");
    prt_write_file(prt_line_buffer);

    if (duplex)
    {
    prt_write_string(" duplex");
    if (tumble)
        prt_write_string("(tumble)");
    }
    if (collate)
    prt_write_string(" collate");
    if (color)
    prt_write_string(" color");
    if (num_copies > 1)
    {
    prt_write_string(" numcopies(");
    /* Note: no space wanted so dont use prt_write_int() */
    sprintf((char *)prt_line_buffer, "%d", num_copies);
    prt_write_file(prt_line_buffer);
    prt_write_string(")");
    }
    prt_write_string("\n");
}

    static void
prt_dsc_docmedia(paper_name, width, height, weight, colour, type)
    char    *paper_name;
    double    width;
    double    height;
    double    weight;
    char    *colour;
    char    *type;
{
    sprintf((char *)prt_line_buffer, "%%%%DocumentMedia: %s ", paper_name);
    prt_write_file(prt_line_buffer);
    prt_write_real(width, 2);
    prt_write_real(height, 2);
    prt_write_real(weight, 2);
    if (colour == NULL)
    prt_write_string("()");
    else
    prt_write_string(colour);
    prt_write_string(" ");
    if (type == NULL)
    prt_write_string("()");
    else
    prt_write_string(type);
    prt_write_string("\n");
}

    void
mch_print_cleanup()
{
#ifdef FEAT_MBYTE
    if (prt_do_conv)
    {
    convert_setup(&prt_conv, NULL, NULL);
    prt_do_conv = FALSE;
    }
#endif
    if (prt_ps_fd != NULL)
    {
    fclose(prt_ps_fd);
    prt_ps_fd = NULL;
    prt_file_error = FALSE;
    }
    if (prt_ps_file_name != NULL)
    {
    vim_free(prt_ps_file_name);
    prt_ps_file_name = NULL;
    }
}

    static float
to_device_units(idx, physsize, def_number)
    int        idx;
    double    physsize;
    int        def_number;
{
    float    ret;
    int        u;
    int        nr;

    u = prt_get_unit(idx);
    if (u == PRT_UNIT_NONE)
    {
    u = PRT_UNIT_PERC;
    nr = def_number;
    }
    else
    nr = printer_opts[idx].number;

    switch (u)
    {
    case PRT_UNIT_INCH:
        ret = (float)(nr * PRT_PS_DEFAULT_DPI);
        break;
    case PRT_UNIT_MM:
        ret = (float)(nr * PRT_PS_DEFAULT_DPI) / (float)25.4;
        break;
    case PRT_UNIT_POINT:
        ret = (float)nr;
        break;
    case PRT_UNIT_PERC:
    default:
        ret = (float)(physsize * nr) / 100;
        break;
    }

    return ret;
}

/*
 * Calculate margins for given width and height from printoptions settings.
 */
    static void
prt_page_margins(width, height, left, right, top, bottom)
    double    width;
    double    height;
    double    *left;
    double    *right;
    double    *top;
    double    *bottom;
{
    *left   = to_device_units(OPT_PRINT_LEFT, width, 10);
    *right  = width - to_device_units(OPT_PRINT_RIGHT, width, 5);
    *top    = height - to_device_units(OPT_PRINT_TOP, height, 5);
    *bottom = to_device_units(OPT_PRINT_BOT, height, 5);
}

    static void
prt_font_metrics(font_scale)
    int        font_scale;
{
    prt_line_height = (float)font_scale;
    prt_char_width = (float)PRT_PS_FONT_TO_USER(font_scale, prt_ps_font.wx);
}


    static int
prt_get_cpl()
{
    if (prt_use_number())
    {
    prt_number_width = PRINT_NUMBER_WIDTH * prt_char_width;
    prt_left_margin += prt_number_width;
    }
    else
    prt_number_width = 0.0;

    return (int)((prt_right_margin - prt_left_margin) / prt_char_width);
}

/*
 * Get number of lines of text that fit on a page (excluding the header).
 */
    static int
prt_get_lpp()
{
    int lpp;

    /*
     * Calculate offset to lower left corner of background rect based on actual
     * font height (based on its bounding box) and the line height, handling the
     * case where the font height can exceed the line height.
     */
    prt_bgcol_offset = (float)PRT_PS_FONT_TO_USER(prt_line_height,
                       prt_ps_font.bbox_min_y);
    if ((prt_ps_font.bbox_max_y - prt_ps_font.bbox_min_y) < 1000.0)
    {
    prt_bgcol_offset -= (float)PRT_PS_FONT_TO_USER(prt_line_height,
                (1000.0 - (prt_ps_font.bbox_max_y -
                        prt_ps_font.bbox_min_y)) / 2);
    }

    /* Get height for topmost line based on background rect offset. */
    prt_first_line_height = prt_line_height + prt_bgcol_offset;

    /* Calculate lpp */
    lpp = (int)((prt_top_margin - prt_bottom_margin) / prt_line_height);

    /* Adjust top margin if there is a header */
    prt_top_margin -= prt_line_height * prt_header_height();

    return lpp - prt_header_height();
}

/*ARGSUSED*/
    int
mch_print_init(psettings, jobname, forceit)
    prt_settings_T *psettings;
    char_u    *jobname;
    int        forceit;
{
    int        i;
    char    *paper_name;
    int        paper_strlen;
    int        fontsize;
    char_u    *p;
    double      left;
    double      right;
    double      top;
    double      bottom;

#if 0
    /*
     * TODO:
     * If "forceit" is false: pop up a dialog to select:
     *    - printer name
     *    - copies
     *    - collated/uncollated
     *    - duplex off/long side/short side
     *    - paper size
     *    - portrait/landscape
     *    - font size
     *
     * If "forceit" is true: use the default printer and settings
     */
    if (forceit)
    s_pd.Flags |= PD_RETURNDEFAULT;
#endif

    /*
     * Find the size of the paper and set the margins.
     */
    prt_portrait = (!printer_opts[OPT_PRINT_PORTRAIT].present
       || TOLOWER_ASC(printer_opts[OPT_PRINT_PORTRAIT].string[0]) == 'y');
    if (printer_opts[OPT_PRINT_PAPER].present)
    {
    paper_name = (char *)printer_opts[OPT_PRINT_PAPER].string;
    paper_strlen = printer_opts[OPT_PRINT_PAPER].strlen;
    }
    else
    {
    paper_name = "A4";
    paper_strlen = 2;
    }
    for (i = 0; i < PRT_MEDIASIZE_LEN; ++i)
    if (STRLEN(prt_mediasize[i].name) == (unsigned)paper_strlen
        && STRNICMP(prt_mediasize[i].name, paper_name,
                               paper_strlen) == 0)
        break;
    if (i == PRT_MEDIASIZE_LEN)
    i = 0;
    prt_media = i;

    /*
     * Set PS pagesize based on media dimensions and print orientation.
     * Note: Media and page sizes have defined meanings in PostScript and should
     * be kept distinct.  Media is the paper (or transparency, or ...) that is
     * printed on, whereas the page size is the area that the PostScript
     * interpreter renders into.
     */
    if (prt_portrait)
    {
    prt_page_width = prt_mediasize[i].width;
    prt_page_height = prt_mediasize[i].height;
    }
    else
    {
    prt_page_width = prt_mediasize[i].height;
    prt_page_height = prt_mediasize[i].width;
    }

    /*
     * Set PS page margins based on the PS pagesize, not the mediasize - this
     * needs to be done before the cpl and lpp are calculated.
     */
    prt_page_margins(prt_page_width, prt_page_height, &left, &right, &top,
                                    &bottom);
    prt_left_margin = (float)left;
    prt_right_margin = (float)right;
    prt_top_margin = (float)top;
    prt_bottom_margin = (float)bottom;

    /*
     * Set up the font size.
     */
    fontsize = PRT_PS_DEFAULT_FONTSIZE;
    for (p = p_pfn; (p = vim_strchr(p, ':')) != NULL; ++p)
    if (p[1] == 'h' && isdigit(p[2]))
        fontsize = atoi((char *)p + 2);
    prt_font_metrics(fontsize);

    /*
     * Return the number of characters per line, and lines per page for the
     * generic print code.
     */
    psettings->chars_per_line = prt_get_cpl();
    psettings->lines_per_page = prt_get_lpp();

    /* Catch margin settings that leave no space for output! */
    if (psettings->chars_per_line <= 0 || psettings->lines_per_page <= 0)
    return FAIL;

    /*
     * Sort out the number of copies to be printed.  PS by default will do
     * uncollated copies for you, so once we know how many uncollated copies are
     * wanted cache it away and lie to the generic code that we only want one
     * uncollated copy.
     */
    psettings->n_collated_copies = 1;
    psettings->n_uncollated_copies = 1;
    prt_num_copies = 1;
    prt_collate = (!printer_opts[OPT_PRINT_COLLATE].present
        || TOLOWER_ASC(printer_opts[OPT_PRINT_COLLATE].string[0]) == 'y');
    if (prt_collate)
    {
    /* TODO: Get number of collated copies wanted. */
    psettings->n_collated_copies = 1;
    }
    else
    {
    /* TODO: Get number of uncollated copies wanted and update the cached
     * count.
     */
    prt_num_copies = 1;
    }

    psettings->jobname = jobname;

    /*
     * Set up printer duplex and tumble based on Duplex option setting - default
     * is long sided duplex printing (i.e. no tumble).
     */
    prt_duplex = TRUE;
    prt_tumble = FALSE;
    psettings->duplex = 1;
    if (printer_opts[OPT_PRINT_DUPLEX].present)
    {
    if (STRNICMP(printer_opts[OPT_PRINT_DUPLEX].string, "off", 3) == 0)
    {
        prt_duplex = FALSE;
        psettings->duplex = 0;
    }
    else if (STRNICMP(printer_opts[OPT_PRINT_DUPLEX].string, "short", 5)
                                     == 0)
        prt_tumble = TRUE;
    }

    /* For now user abort not supported */
    psettings->user_abort = 0;

    /* If the user didn't specify a file name, use a temp file. */
    if (psettings->outfile == NULL)
    {
    prt_ps_file_name = vim_tempname('p');
    if (prt_ps_file_name == NULL)
    {
        EMSG(_(e_notmp));
        return FAIL;
    }
    prt_ps_fd = mch_fopen((char *)prt_ps_file_name, WRITEBIN);
    }
    else
    {
    p = expand_env_save(psettings->outfile);
    if (p != NULL)
    {
        prt_ps_fd = mch_fopen((char *)p, WRITEBIN);
        vim_free(p);
    }
    }
    if (prt_ps_fd == NULL)
    {
    EMSG(_("E324: Can't open PostScript output file"));
    mch_print_cleanup();
    return FAIL;
    }

    ga_init2(&prt_ps_buffer, (int)sizeof(char), PRT_PS_DEFAULT_BUFFER_SIZE);

    prt_page_num = 0;

    prt_attribute_change = FALSE;
    prt_need_moveto = FALSE;
    prt_need_font = FALSE;
    prt_need_fgcol = FALSE;
    prt_need_bgcol = FALSE;
    prt_need_underline = FALSE;

    prt_file_error = FALSE;

    return OK;
}

    static int
prt_add_resource(resource)
    struct prt_ps_resource_S *resource;
{
    FILE*    fd_resource;
    char_u    resource_buffer[512];
    char    *resource_name[1];
    size_t    bytes_read;

    fd_resource = mch_fopen((char *)resource->filename, READBIN);
    if (fd_resource == NULL)
    {
    EMSG2(_("E456: Can't open file \"%s\""), resource->filename);
    return FALSE;
    }
    resource_name[0] = (char *)resource->title;
    prt_dsc_resources("BeginResource",
                resource_types[resource->type], 1, resource_name);

    prt_dsc_textline("BeginDocument", (char *)resource->filename);

    for (;;)
    {
    bytes_read = fread((char *)resource_buffer, sizeof(char_u),
               sizeof(resource_buffer), fd_resource);
    if (ferror(fd_resource))
    {
        EMSG2(_("E457: Can't read PostScript resource file \"%s\""),
                                resource->filename);
        fclose(fd_resource);
        return FALSE;
    }
    if (bytes_read == 0)
        break;
    prt_write_file_raw_len(resource_buffer, bytes_read);
    if (prt_file_error)
    {
        fclose(fd_resource);
        return FALSE;
    }
    }
    fclose(fd_resource);

    prt_dsc_noarg("EndDocument");

    prt_dsc_noarg("EndResource");

    return TRUE;
}

    int
mch_print_begin(psettings)
    prt_settings_T *psettings;
{
    time_t    now;
    int        bbox[4];
    char    *p_time;
    char    *resource[1];
    double      left;
    double      right;
    double      top;
    double      bottom;
    struct prt_ps_resource_S res_prolog;
    struct prt_ps_resource_S res_encoding;
    char_u      buffer[256];
    char_u      *p_encoding;
#ifdef FEAT_MBYTE
    int        props;
#endif

    /*
     * PS DSC Header comments - no PS code!
     */
    prt_dsc_start();
    prt_dsc_textline("Title", (char *)psettings->jobname);
    /* TODO - platform dependent user name retrieval */
    prt_dsc_textline("For", "Unknown");
    prt_dsc_textline("Creator", VIM_VERSION_LONG);
    /* Note: to ensure Clean8bit I don't think we can use LC_TIME */
    now = time(NULL);
    p_time = ctime(&now);
    /* Note: ctime() adds a \n so we have to remove it :-( */
    *(vim_strchr((char_u *)p_time, '\n')) = '\0';
    prt_dsc_textline("CreationDate", p_time);
    prt_dsc_textline("DocumentData", "Clean8Bit");
    prt_dsc_textline("Orientation", "Portrait");
    prt_dsc_atend("Pages");
    prt_dsc_textline("PageOrder", "Ascend");
    /* The bbox does not change with orientation - it is always in the default
     * user coordinate system!  We have to recalculate right and bottom
     * coordinates based on the font metrics for the bbox to be accurate. */
    prt_page_margins(prt_mediasize[prt_media].width,
                        prt_mediasize[prt_media].height,
                        &left, &right, &top, &bottom);
    bbox[0] = (int)left;
    if (prt_portrait)
    {
    /* In portrait printing the fixed point is the top left corner so we
     * derive the bbox from that point.  We have the expected cpl chars
     * across the media and lpp lines down the media.
     */
    bbox[1] = (int)(top - (psettings->lines_per_page + prt_header_height())
                                * prt_line_height);
    bbox[2] = (int)(left + psettings->chars_per_line * prt_char_width
                                    + 0.5);
    bbox[3] = (int)(top + 0.5);
    }
    else
    {
    /* In landscape printing the fixed point is the bottom left corner so we
     * derive the bbox from that point.  We have lpp chars across the media
     * and cpl lines up the media.
     */
    bbox[1] = (int)bottom;
    bbox[2] = (int)(left + ((psettings->lines_per_page
                  + prt_header_height()) * prt_line_height) + 0.5);
    bbox[3] = (int)(bottom + psettings->chars_per_line * prt_char_width
                                    + 0.5);
    }
    prt_dsc_ints("BoundingBox", 4, bbox);
    /* The media width and height does not change with landscape printing! */
    prt_dsc_docmedia(prt_mediasize[prt_media].name,
                prt_mediasize[prt_media].width,
                prt_mediasize[prt_media].height,
                (double)0, NULL, NULL);
    prt_dsc_resources("DocumentNeededResources", "font", 4,
                             prt_ps_font.ps_fontname);

    /* Search for external resources we supply */
    if (!prt_find_resource("prolog", &res_prolog))
    {
    EMSG(_("E456: Can't find PostScript resource file \"prolog.ps\""));
    return FALSE;
    }
    if (!prt_open_resource(&res_prolog))
    return FALSE;
    if (!prt_check_resource(&res_prolog, PRT_PROLOG_VERSION))
    return FALSE;
    /* Find an encoding to use for printing.
     * Check 'printencoding'. If not set or not found, then use 'encoding'. If
     * that cannot be found then default to "latin1".
     * Note: VIM specific encoding header is always skipped.
     */
#ifdef FEAT_MBYTE
    props = enc_canon_props(p_enc);
#endif
    p_encoding = enc_skip(p_penc);
    if (*p_encoding == NUL
        || !prt_find_resource((char *)p_encoding, &res_encoding))
    {
    /* 'printencoding' not set or not supported - find alternate */
#ifdef FEAT_MBYTE
    p_encoding = enc_skip(p_enc);
    if (!(props & ENC_8BIT)
        || !prt_find_resource((char *)p_encoding, &res_encoding))
    {
        /* 8-bit 'encoding' is not supported */
#endif
        /* Use latin1 as default printing encoding */
        p_encoding = (char_u *)"latin1";
        if (!prt_find_resource((char *)p_encoding, &res_encoding))
        {
        EMSG2(_("E456: Can't find PostScript resource file \"%s.ps\""),
            p_encoding);
        return FALSE;
        }
#ifdef FEAT_MBYTE
    }
#endif
    }
    if (!prt_open_resource(&res_encoding))
    return FALSE;
    /* For the moment there are no checks on encoding resource files to perform */
#ifdef FEAT_MBYTE
    /* Set up encoding conversion if starting from multi-byte */
    props = enc_canon_props(p_enc);
    if (!(props & ENC_8BIT))
    {
    if (FAIL == convert_setup(&prt_conv, p_enc, p_encoding))
    {
        EMSG2(_("E620: Unable to convert from multi-byte to \"%s\" encoding"),
            p_encoding);
        return FALSE;
    }
    prt_do_conv = TRUE;
    }
#endif

    /* List resources supplied */
    resource[0] = (char *)buffer;
    STRCPY(buffer, res_prolog.title);
    STRCAT(buffer, " ");
    STRCAT(buffer, res_prolog.version);
    prt_dsc_resources("DocumentSuppliedResources", "procset", 1, resource);
    STRCPY(buffer, res_encoding.title);
    STRCAT(buffer, " ");
    STRCAT(buffer, res_encoding.version);
    prt_dsc_resources(NULL, "encoding", 1, resource);
    prt_dsc_requirements(prt_duplex, prt_tumble, prt_collate,
#ifdef FEAT_SYN_HL
                    psettings->do_syntax
#else
                    0
#endif
                    , prt_num_copies);
    prt_dsc_noarg("EndComments");

    /*
     * PS Document page defaults
     */
    prt_dsc_noarg("BeginDefaults");

    /* List font resources most likely common to all pages */
    prt_dsc_resources("PageResources", "font", 4, prt_ps_font.ps_fontname);
    /* Paper will be used for all pages */
    prt_dsc_textline("PageMedia", prt_mediasize[prt_media].name);

    prt_dsc_noarg("EndDefaults");

    /*
     * PS Document prolog inclusion - all required procsets.
     */
    prt_dsc_noarg("BeginProlog");

    /* For now there is just the one procset to be included in the PS file. */
    if (!prt_add_resource(&res_prolog))
    return FALSE;

    /* There will be only one font encoding to be included in the PS file. */
    if (!prt_add_resource(&res_encoding))
    return FALSE;

    prt_dsc_noarg("EndProlog");

    /*
     * PS Document setup - must appear after the prolog
     */
    prt_dsc_noarg("BeginSetup");

    /* Device setup - page size and number of uncollated copies */
    prt_write_int((int)prt_mediasize[prt_media].width);
    prt_write_int((int)prt_mediasize[prt_media].height);
    prt_write_int(0);
    prt_write_string("sps\n");
    prt_write_int(prt_num_copies);
    prt_write_string("nc\n");
    prt_write_boolean(prt_duplex);
    prt_write_boolean(prt_tumble);
    prt_write_string("dt\n");
    prt_write_boolean(prt_collate);
    prt_write_string("c\n");

    /* Font resource inclusion and definition */
    prt_dsc_resources("IncludeResource", "font", 1,
                 &prt_ps_font.ps_fontname[PRT_PS_FONT_ROMAN]);
    prt_def_font("F0", (char *)p_encoding, (int)prt_line_height,
                  prt_ps_font.ps_fontname[PRT_PS_FONT_ROMAN]);
    prt_dsc_resources("IncludeResource", "font", 1,
                  &prt_ps_font.ps_fontname[PRT_PS_FONT_BOLD]);
    prt_def_font("F1", (char *)p_encoding, (int)prt_line_height,
                   prt_ps_font.ps_fontname[PRT_PS_FONT_BOLD]);
    prt_dsc_resources("IncludeResource", "font", 1,
                   &prt_ps_font.ps_fontname[PRT_PS_FONT_OBLIQUE]);
    prt_def_font("F2", (char *)p_encoding, (int)prt_line_height,
                prt_ps_font.ps_fontname[PRT_PS_FONT_OBLIQUE]);
    prt_dsc_resources("IncludeResource", "font", 1,
               &prt_ps_font.ps_fontname[PRT_PS_FONT_BOLDOBLIQUE]);
    prt_def_font("F3", (char *)p_encoding, (int)prt_line_height,
                prt_ps_font.ps_fontname[PRT_PS_FONT_BOLDOBLIQUE]);

    /* Misc constant vars used for underlining and background rects */
    prt_def_var("UO", PRT_PS_FONT_TO_USER(prt_line_height,
                        prt_ps_font.uline_offset), 2);
    prt_def_var("UW", PRT_PS_FONT_TO_USER(prt_line_height,
                         prt_ps_font.uline_width), 2);
    prt_def_var("BO", prt_bgcol_offset, 2);

    prt_dsc_noarg("EndSetup");

    /* Fail if any problems writing out to the PS file */
    return !prt_file_error;
}

    void
mch_print_end(psettings)
    prt_settings_T *psettings;
{
    prt_dsc_noarg("Trailer");

    /*
     * Output any info we don't know in toto until we finish
     */
    prt_dsc_ints("Pages", 1, &prt_page_num);

    prt_dsc_noarg("EOF");

    if (!prt_file_error && psettings->outfile == NULL
                    && !got_int && !psettings->user_abort)
    {
    /* Close the file first. */
    if (prt_ps_fd != NULL)
    {
        fclose(prt_ps_fd);
        prt_ps_fd = NULL;
    }
    prt_message((char_u *)_("Sending to printer..."));

    /* Not printing to a file: use 'printexpr' to print the file. */
    if (eval_printexpr(prt_ps_file_name, psettings->arguments) == FAIL)
        EMSG(_("E365: Failed to print PostScript file"));
    else
        prt_message((char_u *)_("Print job sent."));
    }

    mch_print_cleanup();
}

    int
mch_print_end_page()
{
    prt_flush_buffer();

    prt_write_string("re sp\n");

    prt_dsc_noarg("PageTrailer");

    return !prt_file_error;
}

/*ARGSUSED*/
    int
mch_print_begin_page(str)
    char_u    *str;
{
    int        page_num[2];

    prt_page_num++;

    page_num[0] = page_num[1] = prt_page_num;
    prt_dsc_ints("Page", 2, page_num);

    prt_dsc_noarg("BeginPageSetup");

    prt_write_string("sv\n0 g\nF0 sf\n");
    prt_fgcol = PRCOLOR_BLACK;
    prt_bgcol = PRCOLOR_WHITE;
    prt_font = PRT_PS_FONT_ROMAN;

    /* Set up page transformation for landscape printing. */
    if (!prt_portrait)
    {
    prt_write_int(-((int)prt_mediasize[prt_media].width));
    prt_write_string("sl\n");
    }

    prt_dsc_noarg("EndPageSetup");

    /* We have reset the font attributes, force setting them again. */
    curr_bg = (long_u)0xffffffff;
    curr_fg = (long_u)0xffffffff;
    curr_bold = MAYBE;

    return !prt_file_error;
}

    int
mch_print_blank_page()
{
    return (mch_print_begin_page(NULL) ? (mch_print_end_page()) : FALSE);
}

static float prt_pos_x = 0;
static float prt_pos_y = 0;

    void
mch_print_start_line(margin, page_line)
    int        margin;
    int        page_line;
{
    prt_pos_x = prt_left_margin;
    if (margin)
    prt_pos_x -= prt_number_width;

    prt_pos_y = prt_top_margin - prt_first_line_height -
                    page_line * prt_line_height;

    prt_attribute_change = TRUE;
    prt_need_moveto = TRUE;
}

/*ARGSUSED*/
    int
mch_print_text_out(p, len)
    char_u    *p;
    int        len;
{
    int        need_break;
    char_u    ch;
    char_u      ch_buff[8];

    /* Output any required changes to the graphics state, after flushing any
     * text buffered so far.
     */
    if (prt_attribute_change)
    {
    prt_flush_buffer();
    /* Reset count of number of chars that will be printed */
    prt_text_count = 0;

    if (prt_need_moveto)
    {
        prt_pos_x_moveto = prt_pos_x;
        prt_pos_y_moveto = prt_pos_y;
        prt_do_moveto = TRUE;

        prt_need_moveto = FALSE;
    }
    if (prt_need_font)
    {
        prt_write_string("F");
        prt_write_int(prt_font);
        prt_write_string("sf\n");
        prt_need_font = FALSE;
    }
    if (prt_need_fgcol)
    {
        int     r, g, b;
        r = ((unsigned)prt_fgcol & 0xff0000) >> 16;
        g = ((unsigned)prt_fgcol & 0xff00) >> 8;
        b = prt_fgcol & 0xff;

        prt_write_real(r / 255.0, 3);
        if (r == g && g == b)
        {
        prt_write_string("g\n");
        }
        else
        {
        prt_write_real(g / 255.0, 3);
        prt_write_real(b / 255.0, 3);
        prt_write_string("r\n");
        }
        prt_need_fgcol = FALSE;
    }

    if (prt_bgcol != PRCOLOR_WHITE)
    {
        prt_new_bgcol = prt_bgcol;
        if (prt_need_bgcol)
        prt_do_bgcol = TRUE;
    }
    else
        prt_do_bgcol = FALSE;
    prt_need_bgcol = FALSE;

    if (prt_need_underline)
        prt_do_underline = prt_underline;
    prt_need_underline = FALSE;

    prt_attribute_change = FALSE;
    }

#ifdef FEAT_MBYTE
    if (prt_do_conv)
    {
    /* Convert from multi-byte to 8-bit encoding */
    p = string_convert(&prt_conv, p, &len);
    if (p == NULL)
        p = (char_u *)"";
    }
#endif
    /* Add next character to buffer of characters to output.
     * Note: One printed character may require several PS characters to
     * represent it, but we only count them as one printed character.
     */
    ch = *p;
    if (ch < 32 || ch == '(' || ch == ')' || ch == '\\')
    {
    /* Convert non-printing characters to either their escape or octal
     * sequence, ensures PS sent over a serial line does not interfere with
     * the comms protocol.
     * Note: For EBCDIC we need to write out the escape sequences as ASCII
     * codes!
     * Note 2: Char codes < 32 are identical in EBCDIC and ASCII AFAIK!
     */
    ga_append(&prt_ps_buffer, IF_EB('\\', 0134));
    switch (ch)
    {
        case BS:   ga_append(&prt_ps_buffer, IF_EB('b', 0142)); break;
        case TAB:  ga_append(&prt_ps_buffer, IF_EB('t', 0164)); break;
        case NL:   ga_append(&prt_ps_buffer, IF_EB('n', 0156)); break;
        case FF:   ga_append(&prt_ps_buffer, IF_EB('f', 0146)); break;
        case CR:   ga_append(&prt_ps_buffer, IF_EB('r', 0162)); break;
        case '(':  ga_append(&prt_ps_buffer, IF_EB('(', 0050)); break;
        case ')':  ga_append(&prt_ps_buffer, IF_EB(')', 0051)); break;
        case '\\': ga_append(&prt_ps_buffer, IF_EB('\\', 0134)); break;

        default:
               sprintf((char *)ch_buff, "%03o", (unsigned int)ch);
#ifdef EBCDIC
               ebcdic2ascii(ch_buff, 3);
#endif
               ga_append(&prt_ps_buffer, ch_buff[0]);
               ga_append(&prt_ps_buffer, ch_buff[1]);
               ga_append(&prt_ps_buffer, ch_buff[2]);
               break;
    }
    }
    else
    ga_append(&prt_ps_buffer, ch);

#ifdef FEAT_MBYTE
    /* Need to free any translated characters */
    if (prt_do_conv && (*p != NUL))
    vim_free(p);
#endif

    prt_text_count++;
    prt_pos_x += prt_char_width;

    /* The downside of fp - need a little tolerance in the right margin check */
    need_break = (prt_pos_x + prt_char_width > (prt_right_margin + 0.01));

    if (need_break)
    prt_flush_buffer();

    return need_break;
}

    void
mch_print_set_font(iBold, iItalic, iUnderline)
    int        iBold;
    int        iItalic;
    int        iUnderline;
{
    int        font = 0;

    if (iBold)
    font |= 0x01;
    if (iItalic)
    font |= 0x02;

    if (font != prt_font)
    {
    prt_font = font;
    prt_attribute_change = TRUE;
    prt_need_font = TRUE;
    }
    if (prt_underline != iUnderline)
    {
    prt_underline = iUnderline;
    prt_attribute_change = TRUE;
    prt_need_underline = TRUE;
    }
}

    void
mch_print_set_bg(bgcol)
    long_u    bgcol;
{
    prt_bgcol = bgcol;
    prt_attribute_change = TRUE;
    prt_need_bgcol = TRUE;
}

    void
mch_print_set_fg(fgcol)
    long_u    fgcol;
{
    if (fgcol != (long_u)prt_fgcol)
    {
    prt_fgcol = fgcol;
    prt_attribute_change = TRUE;
    prt_need_fgcol = TRUE;
    }
}

# endif /*FEAT_POSTSCRIPT*/
#endif /*FEAT_PRINTER*/


#ifdef FEAT_EVAL

# if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
static char *get_locale_val __ARGS((int what));

    static char *
get_locale_val(what)
    int        what;
{
    char    *loc;

    /* Obtain the locale value from the libraries.  For DJGPP this is
     * redefined and it doesn't use the arguments. */
    loc = setlocale(what, NULL);

#  if defined(__BORLANDC__)
    if (loc != NULL)
    {
    char_u    *p;

    /* Borland returns something like "LC_CTYPE=<name>\n"
     * Let's try to fix that bug here... */
    p = vim_strchr(loc, '=');
    if (p != NULL)
    {
        loc = ++p;
        while (*p != NUL)    /* remove trailing newline */
        {
        if (*p < ' ')
        {
            *p = NUL;
            break;
        }
        ++p;
        }
    }
    }
#  endif

    return loc;
}
# endif

/*
 * Set the "v:lang" variable according to the current locale setting.
 * Also do "v:lc_time"and "v:ctype".
 */
    void
set_lang_var()
{
    char_u    *loc;

# if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
    loc = (char_u *)get_locale_val(LC_CTYPE);
# else
    /* setlocale() not supported: use the default value */
    loc = (char_u *)"C";
# endif
    set_vim_var_string(VV_CTYPE, loc, -1);

    /* When LC_MESSAGES isn't defined use the value from LC_CTYPE. */
# if (defined(HAVE_LOCALE_H) || defined(X_LOCALE)) && defined(LC_MESSAGES)
    loc = (char_u *)get_locale_val(LC_MESSAGES);
# endif
    set_vim_var_string(VV_LANG, loc, -1);

# if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
    loc = (char_u *)get_locale_val(LC_TIME);
# endif
    set_vim_var_string(VV_LC_TIME, loc, -1);
}
#endif

#if (defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \
    && (defined(FEAT_GETTEXT) || defined(FEAT_MBYTE))
/*
 * ":language":  Set the language (locale).
 */
    void
ex_language(eap)
    exarg_T    *eap;
{
    char    *loc;
    char_u    *p;
    char_u    *name;
    int        what = LC_ALL;
    char    *whatstr = "";
#ifdef LC_MESSAGES
# define VIM_LC_MESSAGES LC_MESSAGES
#else
# define VIM_LC_MESSAGES 6789
#endif

    name = eap->arg;

    /* Check for "messages {name}", "ctype {name}" or "time {name}" argument.
     * Allow abbreviation, but require at least 3 characters to avoid
     * confusion with a two letter language name "me" or "ct". */
    p = skiptowhite(eap->arg);
    if ((*p == NUL || vim_iswhite(*p)) && p - eap->arg >= 3)
    {
    if (STRNICMP(eap->arg, "messages", p - eap->arg) == 0)
    {
        what = VIM_LC_MESSAGES;
        name = skipwhite(p);
        whatstr = "messages ";
    }
    else if (STRNICMP(eap->arg, "ctype", p - eap->arg) == 0)
    {
        what = LC_CTYPE;
        name = skipwhite(p);
        whatstr = "ctype ";
    }
    else if (STRNICMP(eap->arg, "time", p - eap->arg) == 0)
    {
        what = LC_TIME;
        name = skipwhite(p);
        whatstr = "time ";
    }
    }

    if (*name == NUL)
    {
#ifndef LC_MESSAGES
    if (what == VIM_LC_MESSAGES)
    {
        p = mch_getenv((char_u *)"LC_ALL");
        if (p == NULL || *p == NUL)
        {
        p = mch_getenv((char_u *)"LC_MESSAGES");
        if (p == NULL || *p == NUL)
            p = mch_getenv((char_u *)"LANG");
        }
    }
    else
#endif
        p = (char_u *)setlocale(what, NULL);
    if (p == NULL || *p == NUL)
        p = (char_u *)"Unknown";
    smsg((char_u *)_("Current %slanguage: \"%s\""), whatstr, p);
    }
    else
    {
#ifndef LC_MESSAGES
    if (what == VIM_LC_MESSAGES)
        loc = "";
    else
#endif
        loc = setlocale(what, (char *)name);
    if (loc == NULL)
        EMSG2(_("E197: Cannot set language to \"%s\""), name);
    else
    {
#ifdef HAVE_NL_MSG_CAT_CNTR
        /* Need to do this for GNU gettext, otherwise cached translations
         * will be used again. */
        extern int _nl_msg_cat_cntr;

        ++_nl_msg_cat_cntr;
#endif
        /* Reset $LC_ALL, otherwise it would overrule everyting. */
        vim_setenv((char_u *)"LC_ALL", (char_u *)"");

        if (what != LC_TIME)
        {
        /* Tell gettext() what to translate to.  It apparently doesn't
         * use the currently effective locale.  Also do this when
         * FEAT_GETTEXT isn't defined, so that shell commands use this
         * value. */
        if (what == LC_ALL)
            vim_setenv((char_u *)"LANG", name);
        if (what != LC_CTYPE)
            vim_setenv((char_u *)"LC_MESSAGES", name);

        /* Set $LC_CTYPE, because it overrules $LANG, and
         * gtk_set_locale() calls setlocale() again.  gnome_init()
         * sets $LC_CTYPE to "en_US" (that's a bug!). */
        if (what != VIM_LC_MESSAGES)
            vim_setenv((char_u *)"LC_CTYPE", name);
# ifdef FEAT_GUI_GTK
        /* Let GTK know what locale we're using.  Not sure this is
         * really needed... */
        if (gui.in_use)
            (void)gtk_set_locale();
# endif
        }

# ifdef FEAT_EVAL
        /* Set v:lang, v:lc_time and v:ctype to the final result. */
        set_lang_var();
# endif
    }
    }
}

# if defined(FEAT_CMDL_COMPL) || defined(PROTO)
/*
 * Function given to ExpandGeneric() to obtain the possible arguments of the
 * ":language" command.
 */
/*ARGSUSED*/
    char_u *
get_lang_arg(xp, idx)
    expand_T    *xp;
    int        idx;
{
    if (idx == 0)
    return (char_u *)"messages";
    if (idx == 1)
    return (char_u *)"ctype";
    if (idx == 2)
    return (char_u *)"time";
    return NULL;
}
# endif

#endif