OS/2 Shareware BBS: 5 Edit/05-Edit.zip/vile-src.zip/vile-8.1/CHANGES.R7

Text File | 1998-07-02 | 76KB | 1,536 lines

Changes for vile 8.0 (released Sat May 30, 1998)

Changes for vile 7.5 (released Sat May 30, 1998)

    + document problem with static initialization of union in CMDFUNC.
    + review g++ warnings, use TYPECAST macro in the newer "harmless" const
      warnings.

 (tom) 980529 (p)
    + move mlsave[] into edef.h, updating logic so that the last error
      message during initialization will be displayed properly.
    + add logic to main.c to popup messages generated during initialization
      as per popup-msgs mode (reported by Brendan O'Dea).
    + modify logic for do_source() so that no error is reported if the
      default .vilerc is not found (reported by Brendan O'Dea).

 (tom) 980528 (o)
     + fix minor memory leak in free_majormode()
    + add a "+fork" option to xvile to override forkOnStartup resource.
    + add search.pl to the list of supported Win32 perl scripts and add a
      usage comment to same (patch by Clark Morgan).
    + plug hole in x_open by setting maxscrollbars to zero, fixing a
      scenario where the Motif version would crash (patch by Larry Gensch).

 (tom) 980527 (n)
    + make search rule for startup file and :so consistent - and always
      using $VILE_STARTUP_PATH if the file is not found in the current or
      $HOME directory - using new function 'do_source()' (reported by
      Arnold Robbins).
    + add Clark Morgan's name to the modules he wrote (w32cbrd.c, w32misc.c,
      w32pipe.c).
    + rename perl-api.doc to perl.doc, updated (patch by Brendan O'Dea).
    + modify too-restrictive test for infinite loop in scanner() to work
      with 'n' command after "?.*" expression (reported by Kevin Buettner).

 (kev) 980525 (m)
     + estruct.h (do_mark_iterate): Restore location of
      api_do_mark_iterate_helper to its pre-"l" position.  Moved
      declaration of mp so that it's available for expansion of
      api_do_mark_iterate_helper.
    + perl.xs: Added Brendan O'Dea as an author.
      (Vile::command, Vile::Buffer::command): Set discmd so that
      prompts are not displayed.
    + perl/search.pl: New file.
    + makefile.in (search.pl): Added to PERL_SRC and INSTALL_PERL
      variables.  Added install target.

 (tom) 980523 (l)
     + remove _WIN32 ifdef's from perl.xs, so that $VILE_LIBRARY_PATH
      is supported on Unix as well.
     + add vile-pager script to macros directory.
    + modify makefile.in to install Perl scripts in $(datadir)/perl
      (reported by Kevin Buettner).
    + correct typo in perl.xs: CODE where PPCODE should have been used
      (patch by Kevin Buettner).
    > patch by Brendan O'Dea:
    + some ifdef fixes for OPT_EVAL, OPT_NAMEBST and OPT_SELECTIONS when
      extensions are disabled.
    + correct placement of api_do_mark_iterate_helper() in do_mark_iterate
      macro.
    + quiet a warning in the Perl interface when an optional script is
      not found for inclusion.
    > patch by Clark Morgan:
    + modify the win32 build environment so that perl scripts are copied
      from .\perl to %VILE_LIBRARY_PATH\perl
    + modify perl.xs to patch the new library location into @INC

 (kev) 980522 (k)
     + perl.xs (mlreply, mlreply_dir, mlreply_file, mlreply_no_opts):
      Use the PPCODE: directive instead of the CODE: directive.  Get
      rid of assigning RETVAL and the OUTPUT: directive.  Use XPUSHs
      to return the values.  Also changed the type to void instead of
      SV *.

 (tom) 980521 (j)
     + modify first item in VILE_STARTUP_PATH to be $(datadir).
     + add *.pl to makefile.in's install rules if configured --with-perl
     + move *.pl to perl subdirectory
    + move *.rc to macros subdirectory
    + move *.doc to doc subdirectory, as well as README.MENU, renamed to
      menus.doc, and README.CFG, renamed to config.doc
    + minor fix for HPUX compiler options in CF_ANSI_CC_CHECK configure
      macro.
    + newer CF_IMAKE_CFLAGS macro adds IMAKE_LOADFLAGS to makefile.in
    + add configure-test for strerror, use it if available (reported by
      Ian A Watson).
    + change 'strdup' call in select.c to 'strmalloc', to build on VMS 6.2,
      with DEC C 4.1-001 (reported by Sackett Andrew
      <[e-mail]>).
    + change c_action in Brendan's patch to a union, eliminating casts.
    > patch by Brendan O'Dea:
    + Procedures now behave more like builtin functions--they may be bound
      to keystrokes and listed in the [Binding List] pop-up (for which an
      optional help string may be supplied):
        store-procedure foo "some descriptive text"
        ...
        ~endm
        bind-key foo ^A-f
      this appears under `:describe-function foo' as:
        "foo"                           M-f
          ( some descriptive text )
      Notes/Bugs:
        * describe-key doesn't work yet.
        * setting the MOTION/OPER flag is not implemented for procedures
          --not sure whether it ever could/should be.
        * the method used to update the [Binding List] requires *lots* of
          passes through the tree.
      Perl stuff (strings to eval or coderefs) can also be put into the
      command table under a name--described in the perl.xs comments.
        Vile::register grep => 'hgrep', 'recursive grep', 'hgrep.pl';
      the Vile::register_motion and register_oper variants additionally set
      the MOTION or OPER flag:
        *cb = \$Vile::current_buffer;
        Vile::register_motion 'my-forward-line-at-bol' => sub {
            $cb->dot((scalar $cb->dot) + 1, 0);
        };
        Vile::register_oper 'my-delete-til' => sub { $cb->delete };

 (tom) 980520 (i)
    + correct force-console entry in modetbl (patch by Clark Morgan)

 (tom) 980519 (h)
     + correct const-cast warnings for x_set_icon_name() and
      x_set_window_name().
     + correct fallback prototype for mktemp, which should not have a 'const'
      parameter.
    + vile-pas-filt should treat '_' as an identifier character
      (reported by Radek Liboska).
    > patches by Clark Morgan for Win32 and Perl configurations (tested on
      WinNT 4.0 and Win95):
    + Winvile's read pipe and region filter operations now create implicit,
      hidden console windows (i.e., black console windows don't pop up and
      disappear anymore).  Exception:  Win95's command.com hangs if it
      attempts to communicate with implicitly created consoles.
      Consequently, a new boolean mode (called "force-console") has been
      created which specifies whether or not consoles are created
      explicitly prior to creating a child process or implicitly when the
      child process is exec'd.  By default force-console is only set when
      the host is win95 and the current shell is command.com
    + Prevent ^C/^Break in a console subshell from kernel faulting win95.
    + If the user's shell is a unix clone derived from the Bourne shell,
      add an extra layer of quoting that preserves Unix argument semantics.
      For more details, refer to the function mk_shell_cmd_str() in the
      file w32misc.c
    + new file w32misc.c + some common win32 code in w32pipe.c moved to
      w32misc.c
    + modify makefile.wnt to add two new build configurations to the Win32
      env:  vile-with-perl and winvile-with-perl.
    + add VILE_LIBRARY_PATH environment variable to perl.xs to locate
      the help file.
    + add new file mkprlenv.wnt, which is included by makefile.wnt

 (tom) 980515 (g)
     + modify quote() function to show the accumulated number for ^Vnnn.
     + change 'value' parameter of SetVarValue() to eliminate a const-cast
      warning, which in turn led to applying const to TTrez interface.
     + change category of 'sideways' mode to allow setting it for internal
      buffers, such as [Help].
    + add a range-test for rows and columns in movecursor() to avoid
      passing negative coordinates to tcapmove when setting the 'sideways'
      mode.
    + distinguish MS-DOS drives from UNC pathnames (patch by Ed Henderson)

 (tom) 980513 (f)
     + replace global variable curswval with the corresponding function
      calls, make nextsw a function next_sw(), so that shift-width is
      computed correctly as needed (reported by [e-mail] and Ian A
      Watson <[e-mail]>)
    + correct handling of command-line options in crypt.c (patch by
      Paul Fox).
    + correct missing check for empty line in screen_string, which would
      cause a core dump if :show-variables were run on an empty buffer
      (reported by Ed Henderson <[e-mail]>, patch by Kevin
      Buettner).
     + updated modes.doc to match implementation of fences.

 (kev) 980511 (e)
    + api.c (api_motion): Revised the settings for the following
      global flags: clexec, discmd, disinp, isnamedcmd.  Some of
      these were not getting set or were getting set in such a
      way so as to either cause core dumps or incorrect behavior.
    + bind.c (kbd_erase, kbd_erase_to_end): Don't erase anything if
      disinp is FALSE.  Reason: If we didn't display anything to
      begin with, there should be nothing to erase.
    + history.c (hst_append): Don't append to the history buffer if
      disinp is FALSE.
    + input.c (editMinibuffer): Make sure the input character is
      added to the buffer when disinp is FALSE.
    + perl.xs (svrs): New variable which represents the input
      record separator.  This is necessary because the symbol
      corresponding to rs is not exported from the Win32 DLL for
      perl5.00402.
      (perl_init): Initialize svrs.
      (READLINE): Use svrs instead of rs.
      (set): Call api_setup_fake_win() to make sure that local
      sets are done to the correct buffer.
      (set_region): Renamed from setregion.  setregion is still
      maintained as an alias.  I'm not entirely sure I like the new
      name better, but it is at least consistent with set_selection.
      (selection_buffer, set_selection): New methods for getting/setting
      the selection.
    + proto.h, select.c (get_selection_buffer_and_region): New function.

 (kev) 980506 (d)
    + fences.c (comment_fence): Call scanboundry() before calling
      scanner() to set the scanner's boundary.  This fixes a bug
      in which the corresponding fence would sometimes not be matched
      due to an old scan boundary sitting in the middle of the region
      delimited by the two fences.  A quick way to reproduce the bug:
      Search for something in the middle of a multi-line comment.
      Move your cursor to the beginning or end of the comment.  Press
      the '%' to try to move to the other end of the comment.  Notice
      that it doesn't.  (Or it does, if the bug has been fixed!)
    + input.c (editMinibuffer): Some hacks for 'i', 'a', 'I', and 'A'.

 (tom) 980506 (c)
    + modify getregion() to handle the special case where a region is given
      extending to the end of file, e.g., "^A~]", when DOT is on the last
      section, will set DOT to the first line past the file, e.g., the
      buf_head line (reported by Adam Denton).
    + modify return from kbd_reply() so that macros behave more
      consistently with interactive use, by returning an ABORT when
      name-completion fails.
    + modify handling of mini-edit character to allow it to be bound to the
      same code as abortc (e.g., escape).
    + correct a case where entering mini-edit character would allow name
      completion to exit from kbd_reply().
    + modify handling of minibuffer editing commands so that non-motion
      commands (such as 'i' and 'a') are treated as errors rather than
      implicitly inserting them into the buffer.

 (tom) 980503 (b)
     > patch by Clark Morgan
    + correct bug that made winvile font-dialog die on Win95, using example
      from Petzold for processing messages associated with the system menu.
    + added a menu separator to the system menu
    + gave "Font" a  keyboard accelerator
    + added a cast to keep the compiler from barking about a call to
      EnumFontFamilies().

 (kev) 980503 (a)
     + api.c (api_setup_fake_win, api_dotinsert): Set MDNEWLINE to
      false when deleting a newline before the end of a file.
      (api_dotgline): Unused, #if 0'd out.
    + makefile.in (vile-perl-api.pod, vile-perl-api.doc,
      vile-perl-api.html, vile-perl-api.man): New targets.  I'm going
      to let Tom decide which of these should be installed and where.
    + perl.xs: Converted the inline documentation to be almost pod
      format.  There is still a preprocessing step needed to convert
      to a pod file.  I also rearranged the order of the methods
      so that they'd be roughly alphabetical.
      (svgetline, svgetregion, svgettors): Don't look at end
      marker any more to determine end of region.  Instead,
      use the region length to keep track of how many characters
      are left in the region.  (I added a comment on the problems
      associated with the end-of-region mark to the code just
      before svgetline()).
      (setregion): Rewritten to call getregion() for setting up
      the region.  This way the length gets set right.
      (perl_default_region): Make sure the region is really being
      computed by getregion().
      (do_perl_cmd): Fixed the code so that range specs work
      again.

Changes for vile 7.4 (released Fri May 1, 1998)

 (tom) 980501
    + change table lookups in match_complex() and global_val_init() to
      work with CSet.
     + change WATCHTYPE from an enum to an unsigned int, since TurboC did
      not accept that in prototypes.
    + increase LEN_BUFFER in mktbls.c to accommodate renaming of VI_NL
      (caused compile problem with Solaris 2.5.1 cc, but is still limited
      to allow test-compiles with TurboC).
    + make declarations of x_watchfd() x_unwatchfd() consistent, to compile
      with unproto on SunOS 4.x

 (kev) 980429 (za)
    + finderr.c (predefined): Add hgrep pattern to the predefined
      regular expressions for the error finder.  (Patch from Clark
      Morgan.)
    + hgrep.pl: Added Clark's error finder comment.
      Removed comment about me about to make massive changes which'll
      change the interface drastically.
      (hgrep): Don't search in files named 'tags'.  (Suggested by
      Clark Morgan.)
    + eval.c, proto.h (stenv): New function for setting vile's
      variables (from perl or whereever).
    + perl.xs (working): Added OPT_WORKING ifdefs.  (Description
      of problem from Clark Morgan.)
      (set): Handle perl variables as well as modes.
      (buffers): New method which retrieves a list of all buffers.

 (tom) 980429 (z)
     + trim trailing whitespace from .c and .h files
    + implement font-selection in winvile, added to control menu.  This
      works passably, though you must press ^L to repaint if the character
      size does not change. (Italic fonts are clipped a little also, but usable).
    + add logic to ntwinio.c so that winvile user can use control modifier
      to mouse button to perform rectangular selection, as in xvile
      (requested by Richard A Ward <[e-mail]>).
    + correct ":e!" command so that if user asks to reread the unnamed
      buffer, that vile simply clears it, rather than passing a null
      filename to readin() (reported by Keith Williams
      <[e-mail]>).
    + rename symbol NL to VI_NL, and the termcap symbols in tcap.c
      to use "tc_" prefix to avoid conflicts with curses.h on OSF/1 3.2
    + add pas-filt.c and corresponding vile-pas-filt program (request by
      Radek Liboska <[e-mail]>)
    + modify c-filt.c so that it reads all command-parameters as keyword
      files.
    + correct two errors in c-filt.c (did not handle continued string
      literals - reported by Clark Morgan - and did not handle preprocessor
      lines with leading whitespace.
    + correct minor formatting nit in [Settings] buffer, adding a blank
      line between the multi-column and single column buffer settings.
    + make a more-useful message when describe-function is applied to
      a user-defined procedure.
     > patch by Clark Morgan:
    + Winvile gets its own unique $progname value.
    + The ';' register is made accessible to all versions of vile.  The
      availability of the ';' and '.' registers to all versions of vile is
      documented in vile.hlp .
    + New win32 mode called "scroll-pause" added, which inserts a small
      delay in the console editor's scrolling code if required by user's
      video HW.  Documented in vile.hlp .

 (kev) 980427 (y)
    + history.c (WillGlue): Allow '\r' to be glued.
      (edithistory): Transform '\n' into '\r' for insertion into the
      history buffer.
    + input.c (eol_history): Allow '\r' to match '\n'.
    + modes.c (choice_to_code): Do case insensitive comparisons.  This
      permits TRUE and FALSE to be used as boolean values as well as
      'true' and 'false'.  (The perl interface was being given the
      uppercase values to return.  Though it could be argued that I
      should maybe convert these to 0 and 1...)
      (adjvalueset, set_mode_value): Split functionality of adjvalueset
      into adjvalueset which (still) does the prompting and the
      new function set_mode_value which does the setting.  Having
      a setter which does no prompting makes it easier to call from
      other places (like the perl interface.)
    + proto.h (set_mode_value): New declaration.
    + perl.xs (perl_prompt, perldo_prompt): More or less renamed
      from the old perl and perldo.  perl and perldo still exist,
      but they are small wrappers which make managing the history
      easier.
      (current_position): Alias for dot.
      (READLINE, mlreply, mlreply_no_opts, mlreply_file, mlreply_dir):
      Put calls to hst_glue() in so that the history mechansism will
      work right.
      (Vile::set, Vile::get, Vile::Buffer::set, Vile::Buffer::get):
      New methods.

      Brendan O'Dea contributed the following changes to perl.xs:

        I have nuked the original perldo/replace_line mechanism
        and arranged such that both perl and perldo feed a string
        to eval to the same [static] function after getting the
        user's input.

        The perldo wrapper massages the string into an implicit
        loop if required in pretty much the same way as Perl does
        for the -n/-p options.

        Additionally I've modified the way PRINT works to the
        minibuffer so that it handles embedded newlines and joins
        on $,

        The options format is almost the same as used by perl, and
        defaults to `-lpi' which was how it originally worked.
        Example:

        :r $MAIL :%perldo print if /^From /^M-00ni

        Two minor problems are that the history pastes the options
        onto the command, and there is a minor glitch with `-lpi'
        which causes a trailing newline to be appended to the
        buffer.

 (tom) 980426 (x)
    + modify :-line line specification parsing so that statements such
      as
        :.,.+2,+3,-4;99p
      work as in vi.  Both the repetition for commas and the character
      class for semicolon were missing.
    + modify :-line line specification parsing so that statements such
      as
        :1,w filename
        :.w filename
      work as in vi.  Vi accepts an empty string (e.g., between the "," and
      "w") as ".", and does not require that both limits in a range be
      given.  Previous behavior of vile would prompt, in the latter
      example, when the space after "w" is typed, for the number of lines.
     + corrected :-line parser bug which caused state hang, e.g, when
      typing
        <esc>:a<backspace>1<return>
      vile would be expecting a command verb when the '1' is read, so
      it would only allow the user to abort the command.
    + modify end-character parameter of readpattern so that it is not
      necessary to escape a '?' when doing a reverse search.
    + correct logic of set_rect_columns() so that reversed rectangular
      selection (where DOT > MK) gives the right number of columns
      (reported by Kuntal M. Daftary).
    + remove spurious comma in enum WATCHTYPE (reported by Larry Gensch)
     + update README.MENU with "cmd" keywords for the examples of search
      menu entries.  Other minor documentation updates.
    + tested xvile with ElectricFence, doalloc and Purify.  (The problems
      with 'working' mode did not appear on SunOS or Solaris, but did on
      Linux).  Minor fixes to ifdef's to build the test configuration.
    + remove chgd_fences callback from the newer regular-expression
      fences modes, since that function applies only to fence-pairs.
    + modify 'working' mode so that xvile simply sets the watch cursor.
      Though the "working..." message would be nice to have, it introduces
      problems with X Windows to cause events which may interrupt the
      normal event processing.  The new scheme sets a flag which is tested
      in the event loop; the watch cursor will therefore not appear
      immediately, but it is still automatic.  (prompted in part by a
      bug report by Mike Peercy <[e-mail]>).

 (tom) 980424 (w)
    + make xvile menu entries "work" which rely on executing from the
      :-line, by using "cmd" prefix for "apropos", and new function
      >s for describe-key.  (The "cmd" is a kludge - we should revisit
      this later, since it does not help if we want to process parameters
      from the macro before running out & reverting to the :-line).
    + modify describe-key so that it prompts for a keycode which is not
      mapped.
    + add new function >s, which prompts for a keycode which is not
      mapped, e.g., "#1" for function-key-1.
    + add note to vile.hlp about the use of backtic in shell expressions
      (patch by Clark Morgan).
    + revised fences so that the C-preprocessor and C-comment functions
      are parameterized in terms of regular expressions, making one mode
      per expression.  As such, they are reusable for majormodes.
    + remove logic from x11.c for is_color_cursor, to make cursor visible
      on reverse-video areas.
    + add new mode mini-hilite, which controls the appearance of the :-line
      when user toggles into mini-edit mode.
    + make ^G toggle in the :-line editing rebindable, as the character
      'mini-edit'.
    + correct logic for ^G toggle so that user can insert that character
      into a reply by quoting it.
    + correct core-dump due to vtinit() calling 'imworking()', which was
      happening when executing a command such as ":!resize -s 24 80".
    + correct core-dump when user types ^G^V in a :-line prompt (reported
      by Shawn Halpenny <[e-mail]>).

 (kev) 980422 (v)
    + api.c (curwp_visible): Renamed from curwp_after.  No longer static.
      (linsert_chars): Don't suppress the newline when that's the
      only character being inserted.  Thanks to Brendan O'Dea for
      providing me with a test case which demonstrated this bug.
      (api_motion): Set clexec and discmd to avoid printing on the
      message line.
      (api_swscreen, api_update): Don't detach the fake windows anymore.
    + api.h (curwp_visible): Declared.
    + estruct.h (is_fake_window): New macro.  Changed all callers
      of is_fake_win() (which was a function) to call is_fake_window
      instead.
      (is_visible_window, for_each_visible_window): New macros.
    + buffer.c, display.c, exec.c, file.c, finderr.c, history.c,
      ibmpc.c, modes.c, oneliner.c, select.c, window.c, x11.c
      (for_each_visible_window): Changed some occurrences of
      for_each_window to for_each_visible_window.  Any code which
      really needs to look at all the windows, whether fake or
      visible still uses for_each_window.
    + perl.xs (keystroke): Make sure that curwp doesn't point
      at a fake window before attempting to get a keystroke.
      Also fixed the nonwaiting version so that it works.
      (beep): New method.
    + proto.h, window.c (is_fake_win, detach_fake_windows,
      reattach_fake_windows): Removed these functions.
    + shell.pl: Extended it's functionality.  It now includes enough
      terminal emulation to do some simple line editing.  (Enough for
      bash to work in vi mode.)
    + window.c (push_fake_win, pop_fake_win): Don't increment/decrement
      the b_nwnd field of a buffer when pushing/popping.  This field
      indicates the number of visible WINDOW structures that a buffer
      has.  (#if 0'd out for now.  Need to remove altogether at some
      future date.)
    + x11.c (grip_moved): Fixed both OpenLook and Motif versions so
      that they don't delete the window when it is shrunk to a size
      less than 1 line.  Although this make a certain amount of sense,
      it can be quite annoying to a user to lose a window from a slip
      of the hand.  Note that there are still some problems with this
      code.  Windows that are made really small don't always end up
      really small (reported by Paul Askounis).
      (x_watchfd): Cast third argument of XtAppAddInput to an XtPointer.

 (kev) 980419 (u)
     + ansi.c, borland.c, dumbterm.c, ibmpc.c, ntconio.c, ntwinio.c,
      os2vio.c, tcap.c, termio.c, vmsvt.c (null_t_watchfd,
      null_t_unwatchfd): Added to term structure initializations.
    + estruct.h (WATCHTYPE): New enumerated type.
      (t_watchfd, t_unwatchfd): New fields in the TERM structure.
      (TTwatchfd, TTunwatchfd): New macros for calling the watch/unwatch
      functions.
    + makefile.in (watch.c, watch.o): Added to the appropriate targets.
    + api.c (linsert_chars): Made more efficient.  Handle newlines
      at end of buffer properly.
      (api_gotoline): Allow DOT to be position at end of buffer.
      (api_motion): Fixed bug which was calling early return.  (Thanks
      to Sean Ahern for finding this one.)
      (api_swscreen): Detach/reattach fake windows.
      (api_update): New function.
      (propagate_dot): New function.
      (api_command_cleanup): Call propagate_dot; don't do this work
      directly anymore.
    + api.h (api_update): Declared.
    + buffer.c (renamebuffer): New function.
      (namebuffer): Moved some of the functionality to renamebuffer.
      Call renamebuffer to do the work.
    + perl.xs (GIMME_V, G_VOID): Define in terms of GIMME and G_SCALAR
      if not already defined.  (Thanks to Brendan O'Dea for pointing
      this out.)
      (perl): Don't do initializations/cleanups of Vile::current_buffer
      if called recursively.
      (perl_init): Cause Vile::Buffer::PRINTF to be defined.
      (svcurbuf_set): Put return statement in.
      (stringify_coderef, perl_free_callback, svgetline, svgetregion,
      svgettors): New functions.
      (INITMESSAGE, ENDMESSAGE): Removed these nvi remnants.
      (PRINT): Handle input record separator and input field separator.
      (READLINE): Rewritten to handle the record separator correctly;
      call svgetline, svgetregion, or svgettors as appropriate.
      (attribute_cntl_a_sequences): Pass the region shape when calling
      attribute_cntl_a_seqs_in_region().
      (fetch, attribute, buffername, filename): New methods.
      (Warn): Minor cleanup.
      (mlreply, mlreply_no_opts, mlreply_file, mlreply_dir):  Allow
      either a TRUE or FALSE status to set the return value to a
      string.  The other status codes cause undef to be returned.
      Thanks to Brendan O'Dea for diagnosis and patch.
      (command): Adjust the way docmd is called to match new extra
      parameter introduced in patch t (or thereabouts).
      (keystroke, working, update, watchfd, unwatchfd) New methods.
      Also throughout this file (perl.xs), there was a lot of minor
      reformatting.  A few new comments were even added.
    + proto.h (renamebuffer, attributeregion_in_region, null_t_watchfd,
      null_t_unwatchfd, watchfd, unwatchfd, dowatchcallback,
      detach_fake_windows, reattach_fake_windows): Declared.
      (attribute_cntl_a_seqs_in_region): New parameter.
    + select.c (attributeregion_in_region): New function.
      (attribute_cntl_a_seqs_in_region): New parameter for passing
      the shape of the region.  Use shape parameter for setting region
      up properly.
    + shell.pl, tailf.pl: New example perl scripts.  Not really complete
      yet, but they demo some of the new facilities.  (Maybe we should
      create a demo directory?)
    + watch.c: New file containing fd watching framework.  Will probably
      add timer management here as well.
    + window.c (detach_fake_windows, reattach_fake_windows): New functions.
      Actually, I'm not convinced anymore that this is the right way to
      do it and these will probably go away.
    + x11.c (x_watchfd, x_unwatchfd, watched_input_callback): New
      functions.

 (tom) 980417 (t)
    + modify interface of 'docmd()' to allow caller to set clexec, allowing
      menu.c to invoke this and cause commands to prompt interactively.
    + modify 'get_executable_dir()' to use 'flook()' to deduce xvile's
      location, so that new_vile menu-entry works when the full path is not
      given (reported by Lance Heller <[e-mail]>).
    + restore search-behavior on DOS, NT and OS/2 for startup file.  These
      systems have no $HOME, so we look along the $PATH.
    + correct/extend configure test for isready_c macro:  add a case for
      UWIN, check for end of list, add a definition for SYS_WINNT.

 (tom) 980414 (s)
     + correct change to dofile in 7.3o, which caused vile to discard
      the startup file after processing it if it were specified on the
      command-line (reported by Sean Ahern, some input by Brendan O'Dea).
    + modify configure script, adding test for stdio structs that control
      the isready_c macro, making this handle the case for SCO UW ver 7
      (requested by Clark Morgan).
    + modify configure script to add Perl's link-prefix (patch by Brendan
      O'Dea).
    > patch by Clark Morgan:
    + turn OPT_W32PIPES on (I modified to condition it on SYS_WINNT).
    + add entry to error finder to support perl 5 diagnostics
    + create temporary filenames in w32pipe.c with an API that
      preferentially honors the current settings of TMP and TEMP.
    + add back Win32-specific comments to c-filt.c
    + fix a bug in c-filt.c that caused coloring to go south if a string
      literal ended with \\.  E.g., the statement:
        char *x = "\\";
      would cause almost all syntax coloring following this var declaration
      to fail.

 (tom) 980412 (r)
     + modify configure script and makefile.in to allow for DOS-style
      suffixes (e.g., ".exe"), needed for OS/2 EMX.
     + fix pathname support for OS/2 EMX by allowing MS-DOS-style drive
      letters (estruct.h, path.c).
     + suppress 'working...' message while writing to a pipe (reported by
      Clark Morgan).
     + add rule to make c-filt to makefile.djg
     + add writePipe() function to make MS-DOS version able to write to a
      pipe.
    + use backslash-form for path in c-filt.c on Win32 (Clark Morgan).
    > clipboard support for vile/winvile under Win32 (Clark Morgan):
    + Permits Win32 users to copy the unnamed register contents to the
      Windows clipboard.  Functionality is bound to Alt+Insert.
    + Adds stubs for two additional clipboard-related features.  Stubs are
      bound to Ctl+Insert and Shift+Insert.
    + Adds a new Win32 source file (w32cbrd.c).
    + Revises the "Win32 specifics" section of the help file to talk about
      Win32 features.
    > new implementation of w32pipe.c (Clark Morgan):
    + reset ukb to zero in filterregion() to avoid having insfile() insert
      file/pipe input into a kill register, rather than the current buffer
      on platforms where softfork() is faked.
    + w32pipe.c module documentation lists limitation of native win32
      pipes.
    + winvile.exe and vile.exe are now built with thread-safe libraries,
      because
    + spawn.c's filterregion() routine has been modified to create separate
      writer and reader threads in a Win32 env.

 (kev) 980409 (q)
    + api.c (api_setup_fake_win): Added another parameter to this
      function which controls whether the deferred deletes get
      done or not.  Fixed all callers.
      (api_dotinsert, api_dotgline, api_setup_fake_win, api_bp2vbp,
      api_command_cleanup): Added code for doing deferred deletes.
      (api_delregion, api_motion): New functions.
      (api_edit): Rewritten to better deal with anonymous buffers.
      (api_swscreen): Permit oldsp to be NULL.
    + api.c, api.h, perl.xs (SCR, VileBuf): Renamed SCR to VileBuf.
      Other renamings done as well so that names of local variables
      make more sense.
      (api_dotgline, READ): Added new (output) parameter to
      api_dotgline which indicates if a newline is needed or not.
    + map.c, proto.h (mapped_ungotc_avail): New function.
    + perl.xs (svStartLine, svStopLine, svScreenId, svcurscr):
      Eliminated these static globals.  More importantly, this
      means that $VI::StartLine, $VI::StopLine, $VI::ScreenId,
      and $curscr are no longer available from perl.
      (svcurbuf): New static global which plays a similar role to
      the now defunct svcurscr.
      (svcurbuf_accessors): new static global variable.
      (newVBrv): Renamed from newVIrv.  Also, no blesses the object
      it creates into Vile::Buffer instead of VI.
      (perl): Don't call getregion unless haveregion is non-NULL.
      Fixes a nasty infinite loop bug in getregion().  Also
      removed initialization of svStartLine, svStopLine, etc.
      (VI, Vile, Vile::Buffer): The VI package is no more.  Everything
      has been renamed to go into either the Vile package or the
      Vile::Buffer package.
      (svcurbuf_set): Magically called when $Vile::current_buffer gets
      set.
      (perl_init): Nuked references to svStartLine, svStopLine, etc.
      Also added magic to svcurbuf so that svcurbuf_set is called
      whenever $vile::current_buffer is assigned to from Perl.
      (perl_eval): Or'd in the G_KEEPERR flag in the call to
      perl_eval_sv.  The lack of this flag was preventing error messages
      from getting printed.
      (current_buffer): New method in both Vile and Vile::Buffer.
      (Msg, AppendLine, DelLine, GetLine, GetLines, SetLine, InsertLine,
      LastLine, SwitchScreen): Nuked.
      (PRINT, READLINE): Documented.
      (insert): Alias for PRINT.
      (new, edit): edit is an alias for new and new was renamed from Edit.
      (setregion): Documentation updates; motions as regions.
      (delete, motion): New methods.
      (command): Now a method in both Vile and Vile::Buffer.
    + ptypemap (T_VileBuf): Renamed from T_VI.  Slight change in message
      when buffer no longer exists.
    + region.c (getregion): Prevent infinite loop when MK and DOT are in
      different buffers.  Print a BUG: message when this happens.
    + select.c (sel_extend): Added FIXME comment at approximate place in
      the code where we should check to make sure DOT and MK are in the
      same buffer.  (BTW, to reproduce this bug (where they aren't the
      same), get into xvile, split the screen and put a different buffer
      in each. Now click with the mouse twice, very rapidly, each click
      falling on alternate sides of the middle mode line.  After doing
      this, DOT will be in one buffer and MK in the other.  There's
      probably other places that need to fixed too.
    + x11.c (x_preparse_args): When adding the event handler, for
      x_process_event, or in (Button1MotionMask | Button3MotionMask)
      instead of ButtonMotionMask.  It seems that my X server on linux
      generates motion events regardless of whether any mouse buttons
      are pressed when ButtonMotionMask is used.  I think this is
      actually a bug in the X server, but the above is a more precise
      way of saying what we really want to do anyway.

 (kev) 980403 (p)
    + hgrep.pl, glob2re.pl, visit.pl: New files which implement
      a recursive grep with hypertext links in perl.
     + api.c (api_command_cleanup): Fixed bug in which DOT
      was being propogated to the fake windows instead of
      the real ones.  (Which is a pretty useless thing to do.)
      (api_swscreen): Added big comment noting problems with
      calling api_command_cleanup.
    + cmdtbl (exechypercmd, showhypercmd, operattrhc): New
      commands related to hypertext commands.
    + estruct.h (AREGION): Added new field ar_hypercmd which
      points at a hypertext command.
    + select.c (hypercmd): New static variable used to communicate
      the hypertext command string to attributeregion().
      (free_attribs, free_attrib, sel_begin, selectregion,
      attribute_region): All modified slightly to deal with the
      new ar_hypercmd field in the AREGION structure.
      (attribute_cntl_a_sequences): Look for an H followed by
      the hypertext command, followed by a null character in
      the ^A sequences.
      (attributehyperregion, operattrhc, hyperspray, doexechypercmd,
      exechypercmd, doshowhypercmd, showhypercmd): New functions.
    + vile.hlp: Added new sections "Writing your own filters" and
      "Hypertext".
    + x11.c (multi_click): Added code to execute hypertext command,
      when present, on a double click.

 (tom) 980331 (o)
     + change logic that determines whether to set dos mode for a file so
      that .vilerc (or vile.rc) and source'd files are treated specially.
      For those files, all lines must end with ^M's to set dos mode
      automatically when they are read.  This will reduce the chances of
      trimming ^M's from map commands.
    + modify dofile() function, used to load/execute .vilerc and source'd
      files, to check first for buffer with the same filename.  This fixes
      a problem which would cause vile to allocate more than one buffer for
      .vilerc when an error is encountered.
    + use new function tb_insert() rather than tb_put() to insert strings
      for expand-chars.  The tb_put() function truncates the buffer at the
      location of the new character, and does not work well for inline
      editing.

 (kev) 980330 (n)
     + api.c (api_gotoline): Make sure that we can move off of
      buf_head if presently on it.  (This fixes a bug in which
      it was sometimes impossible to move dot.  setrange also
      exhibited a similar bug.)
    + cmdtbl (perl): Allow perl to be run in view mode.
    + perl.xs (perl): Set/restore clexec, discmd, and isnamedcmd
      so that calls to the various mlreply functions will work
      from within perl.  (Thanks to Sean Ahern for bug reports
      and patches.)
      (perl_init): Call lengthen_path to expand ~ to the user's
      home directory.  (Thanks again to Sean Ahern for bug
      reports and patches.)
      (sv2linenum, sv2offset): New functions for converting
      '$' and '$$' to either line number or offsets within
      lines.
      (VileCommand): Renamed to command.
      (inplace_edit, setregion, dot, mlreply, mlreply_no_opts,
      mlreply_file, mlreply_dir): Added documentation.
      (setregion, dot): Handle '$' and '$$'.
      (setregion): Return the buffer object in a scalar context.
      (attribute_cntl_a_sequences, unmark): New functions.
    + proto.h (attribute_cntl_a_seqs_in_region): Declared.
    + select.c (attribute_cntl_a_seqs_in_region): New
      function.

 (kev) 980324 (m)
    + api.h (dot_changed): New field in SCR structure.
     + api.c (api_gotoline): Prevent enormous amounts of looping
      for outrageous count values.
      (api_dotgline): Fixed bug which caused <$curscr> operator
      to go into infinite loop.
      (api_command_cleanup): Added code for propagating DOT.
      (api_bp2sp): Initialize dot_changed field.
    + perl.xs (perl_init): Add our own search paths to @INC.
      (dot): New method for getting/setting DOT.
      (GetUserInput): Removed.
    + proto.h (is_fake_win): Declared.
    + window.c (is_fake_win): New function.

 (kev) 980321 (l)
     + api.c (api_setup_fake_win, api_dotgline, api_command_cleanup,
      api_bp2sp):  Rearranged initialization of DOT so that it will
      be done conditionally in api_dotgline.  This fixes a nasty
      bug in which lines could get added to the wrong buffer.  It
      also allows perl functions to be written which look at the
      current location of DOT and possibly do something with it.
      Before, we were always setting it to the start of the region
      (which may not have a lot of relevance).
    + api.h (SCR): New field dot_inited.
    + perl.xs (setregion): Set dot_inited field.
    + x11.c (atom_CLIPBOARD, x_preparse_args): New atom; initialize.
      (x_get_selection, x_paste_selection, x_get_clipboard_text,
      x_convert_selection, x_lose_selection, own_selection,
      x_own_selection, copy_to_clipboard, paste_from_clipboard,
      x_process_event): Handle CLIPBOARD selections as well as
      primary selections.
    + cmdtbl (copy_to_clipboard, paste_from_clipboard): New
      commands.
    + estruct.h (CLIP_KREG): New kill register.
      (NKREGS, SEL_KREG, KEYST_KREG): Renumbered to account for
      new kill register, CLIP_KREG.
    + line.c (index2reg): Represent the clipboard kill register
      with a ';'.
    + vile.hlp: New documentation about X11 CLIPBOARD selections.

 (tom) 980321 (k)
    + correct logic in tcap.c so that visual-matches works for a specific
      color (reported by Kuntal M. Daftary).
     + add test for Xp library, needed to link with RedHat Motif 2.1
      (reported by Richard <[e-mail]>).
    + add configure option --with-startup-path to allow installer to
      customize the $startup-path used by vile.
    + change Unix lib directory (i.e., location of vile.hlp) to
      $(prefix)/shared/vile.  The older location, $(exec_prefix)/lib, is
      still in the $startup-path, but vile.hlp will not be installed
      there.
    + remove config.cache at the start of configure script, since we use it
      only for problem reporting.
    + ifdef'd out w32pipe code, but make it available for further
      development as OPT_W32PIPES (recommended by Clark Morgan).
    + minor fixes/resync for configure macros CF_CHECK_ERRNO,
      CF_DISABLE_ECHO, CF_FIND_LIBRARY, CF_NCURSES_LIBS and
      CF_NCURSES_VERSION.

 (kev) 980320 (j)
     + api.c (linsert_chars): Rewritten both for efficiency and
      so that the MARK at the end of the region stays put when
      doing something like:

        $curscr->inplace_edit(1);
        while (<$curscr>) { s/foo/bar/g; print; }

      (setup_fake_win): No longer static.  Renamed to
      api_setup_fake_win.  Also set DOT here to the beginning of
      the region.
      (api_mark_iterator): New function.
      (api_gotoline): No longer static.  Also renamed from
      _api_gotoline.  Fixed all callers.
      (api_dotinsert, api_dotgline): New functions.
      (api_bp2sp): Initialize the region beginning and end
      to point to something valid.
    + api.h (SCR): Added new fields region, regionshape, and
      inplace_edit.
      (api_dotinsert, api_dotgline, api_gotoline, api_setup_fake_win):
      Added declarations.
    + cmdtbl (perldo): New command.
    + estruct.h (api_do_mark_iterate_helper): New macro.
      (do_mark_iterate): Invoke api_do_mark_iterate_helper in order
      fix the the marks in the SCR structure region.
    + perl.xs (newVIrv): Make the references to SCR objects that
      we give perl refer to globs instead of a scalar.  Bury
      the scalar in the scalar portion of the glob.  The reason
      we do this is so that these references may be used as
      filehandles as well as objects.
      (perl_free_handle): Slight change to account for extra
      levels of indirection to get to the thing we really have
      to zero out.
      (perl): Added calls to hst_flush() and hst_init() in order
      to prevent user input from a perl command from being added
      to the history line for the perl command.  (It was simply
      getting appended on the end.)  Unfortunately, this input
      doesn't seem to be recorded in the history any longer, but
      at least it doesn't mess up the perl command.
        Also rewrote the code for setting up a region, making sure
      that the new fields in the SCR structure are initialized
      appropriatedly.
      (replace_line, perldo): New functions.
      (perl_init): Tie STDIN to read from the minibuffer.  Modified
      other tie statements (calls to sv_magic()) slightly to do
      the same thing.
      (Msg): No longer an alias for PRINT.
      (PRINT): New method which handles both buffers and STDOUT
      and STDERR.
      (READLINE): New method which will either read a line from
      a buffer or fetch input from the user via mlreply_no_opts().
      When it reads from a buffer, it has the potential to read
      multiple lines if used in an array context.
      (VileCommand): New method which runs an arbitrary vile
      command.  I'll probably rename this one -- don't like
      the caps.
      (inplace_edit, setregion): New methods which set/get fields
      from the SCR structure.
      (GetUserInput): Will probably go away.  This was my first
      attempt at a mechanism for fetching user input.
      (mlreply, mlreply_no_opts, mlreply_file, mlreply_dir): Various
      methods for fetching user input from the message line.
    + ptypemap (T_VI): Account for the fact that our objects may
      also now be considered as filehandles.  (The references now
      refer to globs instead of scalars.  The scalar is still there,
      but it's just stuck inside the glob.)

 (tom) 980317 (i)
    + remove binding of quote-next-character to ^V (reported by Keith
      Williams <[e-mail]>, recommended by Paul Fox).
     + add an AIX-specific pattern to finderr.c (patch by Michael Finken
      <[e-mail]>).
    + correct w32pipe.c to re-open stdin on the first available descriptor
      (i.e., 0) when cleaning up after a filter operation (patch by Clark
      Morgan).

 (tom) 980316 (h)
     + correct logic that shifts minibuffer back on return from kbd_reply,
      had not set curwp.

 (pgf) 980315 (g)
    + documentation and usage improvements for vile-crypt, in crypt.c,
      vile.hlp, and vile.1.

 (tom)    980314 (f)
     + add "attribute-reverse-til" (suggested by Kuntal M. Daftary
      [e-mail]).
     + correct logic of find_mode() so that :setl cts=4 works as before.
    + modify kbd_reply() to support inline-editing of the user's text, both
      by arrow keys, as well as vi-style motion commands.  Use ^G to toggle
      between the two modes.
    + change interfaces/logic of hst_append(), kbd_show_response(),
      kbd_reply() to make them accept nulls.  This is for later extensions,
      since regexp.c does not handle nulls.  Use the mask KBD_0CHAR for
      this purpose.
    + modify check for type-ahead to make 'showmatch' skip the 1/4 sleep,
      ignoring the current value of 'smoothscroll' (reported by Matthias K.
      Buelow <[e-mail]>)
     + adjust redefinition of WINDOW in tcap.h to work around OSF1 3.2,
      which includes curses.h from term.h
     + split-out function ntcons_reopen() from ntkopen(), to move it past
      the pressreturn() call; otherwise the user sees no prompt when
      running a shell command (reported by Manoj Bhargaw <[e-mail]>).
    + minor adjustments to 'w32pipe' by moving some code into w32pipe.c to
      allow reuse in the GUI winvile, and using $shell rather than inline
      expressions for shell spawned in pipes.  Testing with bash did not
      seem to allow /bin/sh as a possible shell, so I dropped that from
      Clark's patch.
     + improve pipes for W95/WinNT using native support, new mode 'w32pipe'
      (patch by Clark Morgan).

 (pgf)    980218 (e)
    + added "crypt-til" operator (bound to ^X-C) which will
      encrypt/decrypt an arbitrary region.  the main goal was to make
      it easy to read a previously encrypted file and decrypt it for
      reading, or to read a clear file, and quickly encrypt it before
      writing it.  i find crypt mode to be cumbersome at best -- i find
      the explicit command to be more useful.
    + modified crypt.c to allow building it as standalone utility.
      this gets built as vile-crypt, and it's compatible with the crypt
      command inside of vile (if used over an entire buffer).  usage
      is:
        vile-crypt [-m] [-k crypt-key ] [file ...]
      if '-k crypt-key' is omitted you will be prompted instead, and
      '-m' leaves text to the first blank-line intact, which i find
      useful for encrypting individually stored mail messages.  the
      en/decrypted text appears on stdout.
    + attempted to document vile's encryption features in vile.hlp.

 (tom)    980208 (d)
     + reformatted proto.h, ordering prototypes alphabetically.
     + make column shown by ^G the same as for the ruler (reported by David
      Letcher <[e-mail]>).
     + add command show-printable to show exactly what vile does with the
      character classes.
     + newer autoconf configure macro circumvents problems generating
      config.h due to limited sed buffer size on antiquated systems (e.g.,
      HP-UX 9.x, SCO 3.x).
     + updated configure test, to avoid use of broken IRIX 6.2 nsl library.
    + add configure option --with-locale to allow use of i18n support via
      setlocale function.
    + use new symbol SYS_OS2_EMX to avoid nonstandard use of 'defined'
      keyword in OPT_CASELESS preprocessor expression (reported by Adam
      Denton).
    + move the call that forks xvile up to the first place where it could
      be used, to minimize data space.

 (tom)    971219 (c)
    + correction to CF_CURSES_TERMCAP configure test so that SVr4 systems
      that do not have a prototype for tgoto, but still require curses.h
      will build properly (patch by Brendan O'Dea).

 (tom)    971218 (b)
     + add configure-test to see if $LIBS already contains termcap functions
      before looking for additional libraries.
     + amended CF_CURSES_TERMCAP and CF_TYPE_OUTCHAR tests to use vile's
      headers (correcting symbol conflict with NL in estruct.h vs curses.h),
      and to double-check that failure to link test with tgoto was
      due to conflict with prototype (latter reported by Brendan O'Dea).

 (tom)    971217 (a)
     + add CF_CURSES_TERMCAP macro to test for prototypes in curses.h vs
      termcap.h
     + add variable $patchlevel.
     + updated README.CFG to list the newer options (reported by Ralphe
      Neill <[e-mail]>).
     + use CF_SIZECHANGE macro to eliminate a SCO-related hack in configure.
     + interpret --with-x option in configure-script (reported by Paul Fox).
     + add/use TYPECAST macro to quiet the "harmless" const warnings.
     + modify CF_IMAKE_CFLAGS macro to work with SGI's imake macros which
      combine the -I/usr/include and -nostdinc options, confusing gcc
      (reported by Billy Little <[e-mail]>).
    + fixes for Perl-related rules in makefile.in (patch by Brendan O'Dea).

Changes for vile 7.3 (released Mon Dec 8, 1997)

 (tom)    971207 (t)
     + correct include-path for configure script's check for missing
      externs, to work with --srcdir option (analysis by Kevin Buettner).

 (tom)    971205 (s)
     + add logic to configure.in to use a filter (installed by td_lib)
      named 'td_config' which works around limited 'sed' when constructing
      config.h on SCO 3.x, HP-UX 9.x and other antiquated platforms.
     + add configure options --disable-extensions (SMALLER, FEWNAMES) and
      --disable-shell (OPT_SHELL), and --with-dmalloc.  The shell option is
      experimental; note that a genuinely secure editor should not allow
      directory names to be specified (but I think that's the only omission).
    + add fallback for tparam/tparm in tcap.c (for EMX, but usable for
      genuine termcap systems such as SunOS 4.x), to support color.
    + add files for building termcap version on OS/2 with EMX
      (makefile.emx, config.emx and os2keys.h).
     + change $shell to use $COMSPEC on OS/2, MS-DOS, etc.  This is needed
      for the OS/2 EMX configuration, but useful in the others.
     + modify configure script to use ifdef's in estruct.h when testing
      for missing extern/prototype declarations rather than a separate
      list in aclocal.m4 (this requires rebuild/test on most platforms).
    + combine configure-tests for errno, sys_nerr and sys_errlist.
    + minor fixes:  new versions of CF_NCURSES_LIBS, CF_ADD_INCDIR,
      CF_CHECK_CACHE, CF_NCURSES_CPPFLAGS.
    + correct handling of :map containing ".", which was being handled
      as if the "." always appeared at the end (patch by Duncan Sargeant;
      input.c, map.c).

 (kev)  971203 (r)
    + api.c (lreplace): Fix marks up.  This won't always be right,
      but at least it'll be closer.  We need a way to modify marks
      and attributes from perl.
      (setup_fake_win): changed return type to int.
      (api_fscreen, api_edit, api_swscreen, api_bp2sp): new functions.
      (sp2bp, bp2sp): Removed these macros.
    + api.h (api_swscreen, api_fscreen, api_bp2sp): declared these
      functions.
      (sp2bp, bp2sp): macros moved from api.c.
    + configure.in (LINK_PREFIX): set this variable.  (From Brendan
      O'Dea.)
      (CFLAGS, LIBS): Use $perl_bin_path instead of perl in the
      --with-perl section.
    + makefile.in (LINK): Prepend LINK_PREFIX as determined by
      configure to the link command.  (From Brendan O'Dea.)
    + perl.xs (newVIrv): Don't allocate api private part here. (It's
      allocated in api_bp2sp now.)  The second parameter has also
      changed; changed all callers.
      (perl): Print error messages and warnings to message line.
      (perl_init): Setup warning handler.  Also tie STDOUT and STDERR
      so that output to these filehandles will be printed on the
      message line.  (Thanks to Brendan O'Dea.)
      (perl_eval): New function.
      (Msg): Rewritten to handle multiple arguments. (From Brendan O'Dea.)
      (GetLines): new function which fetches all lines in the range.
      (Edit, FindScreen, SwitchScreen, Warn): New functions.
    + proto.h (perl_free_private): removed.
      (perl_free_handle): added.
    + ptypemap (T_VI): Translate C null pointers to perl undefs.

 (tom)    971128 (q)
    + modify tagignorecase mode to use lowercased keys in the binary-tree,
      and applying tagignorecase mode to the search within the tagged file,
      making this behave as Joseph F. Garvey requested.
     + implement tags-completion.
    + replace Alex Wetmore's binary tree code with a balanced binary tree
      module that's a little more general, and does deletion more rapidly
      than my first try.
     + minor fixes for foreground/background colors when resizing terminal
      window so minibuffer is painted correctly (display.c, ntconio.c).
     + rename ntvile to winvile.

 (tom)    971112 (p)
     + correct logic for minibuffer by ensuring that it is not marked for
      undo, and that the value of MK is save/restored when modifying
      the minibuffer.

 (tom)    971109 (o)
     + correct range of scrolling region in ansi.c
     + correct treatment in xshell.sh for no-arguments.
     + change TTrev() / TTattr() parameter to unsigned.
     + implement mouse and flash in OS/2 VIO driver (os2vio.c).
     + correct logic in vtputc() to prevent minibuffer from writing into the
      lower-right corner of the screen.

 (tom)    971108 (n)
     + more CSet unsigned/signed compiler warning fixes (estruct.h)
     + don't reopen terminal in ansi.c if it is already open.
     + correct handling of rename-buffer when it is a scratch buffer that
      does not happen to be a stored procedure.
    + recorrect lookup_namebst() call in engl2fnc(); it should always allow
      partial match.  Fixed by adding a third mode where the lexical first
      match will be returned rather than the middle one in a range.
     + correct tab-position in ntconio.c
     + modify borland.c to reset colors when exiting or running a shell.
    + change tcapkopen() to reflect possibility that terminal
      initialization string moves the cursor.
     + add simple gui terminal driver for WinNT (ntwinio.c, makefile.wnt).
      Built with Microsoft Visual C++ 4.1, both with IDE and makefile.wnt.
      Use "nmake -f makefile.wnt cfg=ntvile".
    + integrated related patch by Clark Morgan for repainting the screen
      correctly after a :stop command.
     + rewrote internals of command/message line to make it a one-line
      minibuffer, including mods for OPT_RAMSIZE and OPT_WORKING.  Tested
      Linux (for tcap.c, x11.c, ansi.c), OS/2 (os2vio.c), WinNT (ntconio.c,
      ntwinio.c), VMS (vmsvt.c), djgpp (borland.c).

 (tom)    971028 (m)
    + correct inverted parameter in call on lookup_namebst().
    + compiler warnings from Solaris (unsigned vs signed in bind.c, ifdef
      in trace.c).
    + minor changes to compile on OS/2 with EMX.
    + modify borland.c to reset colors to white/black on exit.

 (tom)    971027 (l)
    + backout change to own_selection, since it doesn't follow ICCCM,
      in the sense that it increases X traffic needlessly (pointed out by
      Kevin Buettner).  Kept check on return value from XtOwnSelection.
     + correct out-of-bounds indexing in dname_to_dirnum() by adding a
      length parameter, use memcmp.
     + modify Alex's change so that buffers that are renamed or deleted
      update the corresponding entries in the binary-tree.  Also, don't
      allow built-in commands to be removed or replaced.  Finally, make the
      name-completion work with an empty command.
    + add $end-of-cmd variable (patch by Alex Wetmore).
    + integrate patch by Alex Wetmore <[e-mail]>
      that makes stored procedures act just like built-in commands, i.e.,
      able to run them from the :  prompt.  This works by building a binary
      tree of all of the command and procedure names.

 (tom)    971015 (k)
    + add configure options --with-Xaw-scrollbars and
      --with-drag-extension.  These make it easy to build xvile with
      Kevin's scrollbars by specifying --without-Xaw-scrollbars, or to use
      the Xaw's default translations for scrollbars by specifing
      --without-drag-extension.
    + ifdef'd out the code that invokes $xshell in ":!command".
    + correct logic in xvile that spawns a new instance from menu entry,
      was leaving a zombie when the new instance closed (reported by Brian
      Moore <[e-mail]>).
    + modify own_selection to always try to own the select, as well as to
      check the return value from XtOwnSelection (reported by Ian Jamison
      <[e-mail]>)
    + add Lesstif-specific ifdef for workaround (requested by Larry Gensch).
    + correct ifdef'ing of Motif version of xvile (reported by Larry
      Gensch).
    + add screen types Xol and Xm as aliases for OpenLook and Motif.
    + correct quoting in configure script for OpenLook case.
    + fix some compiler warnings and add 'make check' target (reported by
      Nelson H. F. Beebe <[e-mail]>)

 (kev)    971013 (j)
     + perl.xs, ptypemap: Lots of new code which extends the perl
       interface a bit more.
     + api.c, api.h: New files which sort of implement nvi's API for
       extension languages.
     + makefile.in (OBJ, VILESRC): Added api.o and api.c to these
       lists.
     + estruct.h (BUFFER): Added new field, b_api_private, used by
       the extension language API.
     + buffer.c (FreeBuffer): Free up the extension language API
       related data structure referenced by b_api_private.
       (bfind): Initialize the b_api_private field.
     + cmdtbl (perl): Put in a reasonable set of flags for this
       command.  (It used to be NONE.)
     + exec.c (execute_named_command): Added region support for the
       perl command.
     + proto.h (push_fake_win, pop_fake_win, perl_default_region,
       perl_free_private, api_free_private): New prototypes.
     + select.c, window.c (push_fake_win, pop_fake_win): These
       functions removed from select.c and put into window.c.  Also
       they are no longer static.

(kev)    971009 (i)
    + perl.xs, ptypemap:  New files.  Beginnings of perl interface
      for vile.
    + cmdtbl (perl): New command enabled only when --with-perl
      supplied as an option to the configure script.
    + configure.in, makefile.in: perl related changes.
    + (fix typo in xshell.sh - tom)

(tom)    971008 (h)
    + correct typo in stubbed-out code for $xshell, add $xdisplay and
      example script 'xshell.sh' which can be used to run a shell command
      from xvile, prompting at the end so that the output doesn't go away
      when the xterm completes.
    + rename vile's ctype macros to mixed-case to avoid conflict.  This
      is needed for Solaris 2.6, which does not implement ctype as macros.
    + modify casts and some names (e.g., new, operator, class) to allow
      compiling with C++ (tested with g++ 2.7.2 on Linux).

(kev)    971007 (g)
    + x11.c (multi_click): Reimplemented multiclick selections for
      lines.  Previously, it was not possible to select the entirety
      of a wrapped line by clicking on a row other than the first
      row.
    + window.c (mvupwind, onlywind, delwp, splitw, enlargewind,
      shrinkwind):  Make sure that w_line.o is zero just after
      setting w_line.l to a new value.  The lack of this
      assignment in mvupwind() was causing a SEGFAULT on my linux
      box.  [To test it, create a very long wrapped line with a
      bunch of lines (say 100) before it; my test has in excess of
      10,000 characters on the long line.  Make sure linewrap mode
      is set.  Then say 100^Y.  The SEGFAULT was immediate.  You
      can also reproduce it by dragging the scrollbar for awhile.]

(tom)    971006 (f)
    + document --with-screen values better in configure --help.
    + implement Athena widget scrollbar support in x11.c, using Kevin's
      dragging support from the no-widget case.
    + add $xshell environment variable, use this to control :sh command
      from xvile.
    + new CF_X_ATHENA configure macro adds configure options --with-Xaw3d
      and --with-neXtaw.
    + corrected CF_IMAKE_CFLAGS, which was not using the imake symbol that
      specified X function prototypes.  (This was old behavior, which did
      not seem to matter until adding Xaw scrollbars on Linux).

(kev)    971005 (e)
    + basic.c (setwmark): In linewrap mode, account for undisplayed
      rows before the first row shown of a very long wrapped line.
    + display.c (vtset): Don't allow wrapped lines to overflow onto
      the mode line.  I don't think characters from the buffer were
      ever getting written to the modeline, but vteeol() would sometimes
      erase the modeline when displaying very long wrapped lines.
      (reframe): Handle reframes of long wrapped lines more gracefully.
      In particular, once the top row of a very long wrapped line
      goes off the top, it is now possible to have the cursor positioned
      on somewhere other than the bottom row.  Scrolling up or down
      via right or left right movement within a long wrapped line also
      looks a lot better now.
      (updattrs): Don't attempt to access rows before the top row
      of a window when updating attributes.  Also, don't access
      rows of or below the the mode line.  This fixes a SEGFAULT.

(tom)    970918 (d)
    + amend logic for find_mode() so that "&glo cmode" and "&loc cmode"
      work as before majormode changes (reported by Sean Ahern).
    + merge autoconf macros from tin/xterm, which mainly affect the
      configuration tests for ncurses and imake $CFLAGS, used to augment
      autoconf's tests for X Windows.
    + also (since some systems have deficient 'sed' programs) provide
      alternate hook for using a program 'td_config', which is currently
      bundled in td_lib.tgz, that does the sorting operation of config.h in
      a reasonably portable manner.
    + add mode 'maplength' to control the maximum length of a map
      string.
    + correct definition of OUTC_ARGS for the case where it should be a
      'char' value (patch by Jason Molenda <[e-mail]>).

(tom)    970907 (c)
    + modify CF_CACHE_CHECK macro to use AC_CANONICAL_HOST to obtain a
      "better" value for SYSTEM_NAME.  This is displayed as part of the
      :version command.  Add config.guess and config.sub to support this.
    + changes for 7.2b omitted some macros dealing with echoing during the
      make process (reported by Jens Schleusener <[e-mail]>)

(tom)    970905 (b)
    + merge configure macros from tin-unoff and lynx (configure.in,
      aclocal.m4).
    + rename configure macros to CF_ prefix, for consistency/merge with
      other programs (configure.in, aclocal.m4).
    + correct handling of tparm return-value; it must not be freed, at
      least for SVr4 and ncurses (tcap.c)
    + ensure that majormode names are a legal identifier.
    + modify so that majormode names can be mixed case (requested by
      Sean Ahern).

(tom)    970904 (a)
    + add variable $majormode so that it can be tested in a script
      (requested by Philippe Chassany).
    + fix potential ifdef problem for cbuf1 (reported by Brendan O'Dea).
    + simplified VMS permissions code, using the protection parameter in
      'open()' to achieve the objective of propagating a file's current
      protection, as well as making it compile with DEC C (reported by
      Simon Hefti <[e-mail]>).

Changes for vile 7.2 (released Thu Sep 4, 1997)

(tom)    970903 (k)
    + modify rename-buffer so that if we rename a buffer, we'll clear the
      flag that marks it for removal when popped-down.
    + modify show-modes command so that it will format more than 3 columns
      if the screen is wide enough.
    + correct logic of delfrommap(), which dumped core when unmapping
      a single-character map (reported by Paul Fox).
    + modify show-majormodes so that giving a count will make it show all
      of the submodes prefixed by the majormode name, e.g., c-suffixes
      (suggested by Paul Fox).
    + modify documentation to use "define-majormode" and "remove-majormode"
      for clarity, other related fixes to documentation (suggested by Paul
      Fox).

(tom)    970902 (j)
    + correct logic in find_mode() that did not find majormode qualifiers
      for majormodes that began similarly (e.g., "com" masked by "c").
    + correct an uninitialized variable in per_submode(), found by Purify.
    + correct ifdef'ing in tcap.c, from 7.1i, when neither tparm nor
      tparam is found.

(tom)    970901 (i)
    + if the command-line '@' option is used, set the $startup-file
      variable to correspond to the startup file which is used.
    + add tagignorecase mode, which causes tag searches to be done ignoring
      case (requested by Joseph F. Garvey <[e-mail]>).
    + initialize last_eolchar in docmd() so that 'set' command works
      properly in a macro.
    + add %B substition for error-buffer regular expressions to allow
      using [Standard Input] and other scratch buffers as error buffers.
    + modify format-til command to treat '#' specially when in cmode, so
      no whitespace is inserted after it.
    + modify format-til command to support comment-prefix mode and handle
      repeated prefix, so that, for example, vile can now format multiple
      levels of email replies.
    + add comment-prefix mode, which specifies a regular expression that
      controls the portion of a line which is prefixed when formatting.
    + modify default setting of comments mode to make repeated prefix
      match (e.g., "> > >", is different from "> >").
    + ensure that imdying() always exits (reported by Clark Morgan).
    + workaround for incompatible interpretation of termcap Sf/Sb
      capability with BSD vs SYSV platforms (tcap.c).

(tom)    970829 (h)
    + correct initialization of $palstr on OS/2.
    + correct some of the signed/unsigned warnings from IBM CSet compiler.
    + remove obsolete autoconf fallback macros.
    + correct handling of ":abbr res RES", ":abbr wres WRES" combination by
      forcing matches on these to check that the beginning of the match is
      an identifier boundary (reported by Paul Laub <[e-mail]>).
    + correct assignment in maplookup() which caused a -1 returned when no
      more characters were available for matching to be converted to the
      0xFF character.
    + modify fopen-for-write calls on VMS to add "0" argument, which makes
      the new file get the user's default protection (requested by Brian
      Reed <[e-mail]>).
    + correct logic that allowed repeated definition of submodes (reported
      by Duncan Sargeant).
    + allow submode names to begin with "no", assuming they are booleans
      (reported by Duncan Sargeant).
    + corrected lookup of hyphenated submodes, e.g., c-tabstop (reported
      by Duncan Sargeant <[e-mail]>).
    + allow define-submode to accept an '=' between the submode and its
      value.
    + modify define-mode and remove-mode to suppress warning message if
      the mode does not exist, since this produces unnecessary warnings
      when re-sourcing .vilerc
    + include <windows.h> only where it is needed, halving the build time
      (patch by Clark Morgan).
    + modify configure script to work with CLIX old-style shared libraries
      (e.g., -lc_s) needed for xvile.

(tom)    970816 (g)
    + correct type mismatch in filec.c when sizeof(size_t) !=
      sizeof(unsigned) (reported by Larry Gensch <[e-mail]>).
    + modify vmsbuild.com to tell MMS (or MMK) to ignore warnings,
      workaround for an inconsistency between versions of DEC C
      (suggested by Andy Harper and Adam Denton).
    + initial implementation of majormodes, which supports grouping of
      buffer modes, together with qualifiers (e.g., cmode and c-suffixes).
      New commands include define-mode, define-submode, remove-mode,
      remove-submode, list-majormodes.  (Most changes are in mktbls.c and
      modes.c).

(tom)    970619 (f)
    + modify ":set" command so that it does not force a mode to be set,
      but instead shows the local buffer and window settings.
    + correct missing error-test in logic that sets regular-expression
      modes (reported by Philippe Chassany).
    + add configure option to specify the total numbered macros available,
      e.g., execute-macro-1, ifdef'd with OPT_EXEC_MACROS (requested by
      Philippe Chassany).
    + modify xvile menus to allow arbitrary command line rather than
      bound functions (exec.c, menu.c).
    + correct spurious parameter in vms2unix.c, from 7.1d changes.

(tom)    970607 (e)
    + modify VMS terminal driver, vmsvt.c, to work when invoked from a
      command-file, i.e., get terminal characteristics from SYS$COMMAND
      rather than SYS$INPUT (reported by Adam Denton).
    + treat '$' as an identifier character on VMS (requested by
      Adam Denton).
    + clarify discussion of color in help-file (patch by Clark Morgan).
    + modify map.c to use TBUFF's, as well as new kbd_reply interface,
      to remove limit on mapped strings.
    + change interface/internals of kbd_reply() to use a TBUFF, so we don't
      need fixed-size buffers any more (bind.c, exec.c, eval.c, history.c,
      input.c, line.c, modes.c).
    + correct uninitialized buffer in loadkreg().
    + correct indexing in display_cursor() function in xvile; exposed when
      displaying a long list for the historical buffer command.

(tom)    970526 (d)
    + add $ncolors variable to allow run-time modification of the meaning
      of colors (e.g., white).
    + change $palette to a dynamically allocated string.
    + modify termcap and IBM terminal drivers to support 16 colors.  Note
      that the termcap driver can do this only when configured against a
      terminfo library (inspired by a patch from Clark Morgan).
    + modify mktbls to generate the enumerated choices tables (i.e., for
      color, visual-matches) to simplify ifdef'ing these between the
      8-color and 16-color configurations.
    + undo some of the const parameters of functions, thereby eliminating
      most of the places where casts were used to remove const.
    + modify VMS processing of tags to strip file's version number
      (adapted from fix by Adam Denton <[e-mail]>).
    + modify bclear() to free attributes before removing the buffer's
      lines, thereby making it faster (patch by Ian Jamison).

(tom)    970513 (c)
    + set local buffer mode for 'dos' in slowreadf(), which fixes the
      problem of that function modifying the global mode when piping a file
      to vile, hence causing syntax errors in vile.rc when it contains
      trailing carriage-returns (file.c) (analysis by Clark Morgan).
    + correct missing VASEL flag that caused 'q' command on OS/2 to not
      display highlighting, missed in 7.0b (os2vio.c) (reported by George
      Eccles <[e-mail]>)
    + implement 'flash' for WinNT (ntconio.c)

(tom)    970513 (b)
    + ifdef'd menu.c to work with 7.1a

(tom)    970512 (a)
    + modify has_C_suffix() to ignore case on platforms where filename
      case should be ignored (reported by Emil Rojas <[e-mail]>).
    + add version in vmsbuild.com to release_warnings
    + remove unnecessary test for Xaw/SimpleMenu.h (configure.in).
    + improve geometry of Xaw menus using Box (patch by Brendan O'Dea
      <[e-mail]>)
    + add menu.c to the modules for xvile on VMS (reported by Graeme
      Miller).

Changes for vile 7.1 (released Wed May 8, 1997)

(tom)    970508 (none)
    + undo a place where I'd dropped an XtVaGetValues() call, since it
      appeared redundant, but was not - affects only Xaw build (x11.c).
    + ifdef'd a test in newscreensize() that is applicable only when
      OPT_WORKING is set; this had broken screen initialization on MS-DOS
      (display.c).

(tom)    970507 (l)
    + add resource to control menu-height (x11.c, menu.c).
    + correct definition in vms2unix.c to allow compile with VAX C, which
      doesn't like "#define foo xxx.foo".

(tom)    970430 (k)
    + modify lookup of .vilerc to use startup-file search rules (menu.c)
    + correct missing XmString conversion (menu.c)
    + add configure check for -lXext to support Athena build on X11R4.

(tom)    970429 (j)
    + use im_waiting() function to reset "working..." state after executing
      a menu-command (menu.c).
    + modify lookup of .vilemenu to use startup-file search rules.
    + corrections for porting Xaw version to SunOS, etc., with X11R4 and
      X11R5 (x11.c, configure.in)

(tom)    970428 (i)
    + implement Xaw (Athena widget) version of menus.  Simplified buffer
      lookup function for menus, align/document resource names (menu.c,
      x11.c, configure script).
    + correct minor memory leaks during initialization (main.c)
    + correct array-indexing error that caused core dump when selecting
      line-wrapped text, moving cursor up (display.c).

(tom)    970422 (h)
    + improved example of menus for xvile (Philippe Chassany).
    + correct mistyped index in c-filt.c, which was a char (patch by Ian
      Jamison).
    + correct c-filt.c handling of nested comment delimiters (patch by Ian
      Jamison <[e-mail]>)
    + correct sign-extension in tcap.c for xterm mouse-coordinates.

(tom)    970407 (g)
    + add mode 'tagword', which allows user to lookup the whole word rather
      than a substring.  (from Adam Denton <[e-mail]>).
    + reintroduce flag 'i_displayed' into 'working' mode (I'd forgotten
      that it suppressed the message until screen-mode).
    + improve buffer-switching in menu-support (patch by Philippe Chassany)
    + correction to MS-DOS, etc., where attempt was made to fclose a file
      pointer that was out of scope (patch by Clark Morgan).
    + modify definition of eql_bname() macro so that buffer names are
      treated as case-insensitive where filenames are, e.g., WinNT and
      OS/2 (patch by Rick Sladkey from report by Clark Morgan).
    + add predefined regular expression to finderr.c to improve support
      for MS-DOS pathnames (patch by Clark Morgan).

(tom)    970407 (f)
    + integrated menu-support for Motif xvile (patch by Philippe Chassany
      <[e-mail]>).
    + refined changes to 'working' mode to ensure that the "working..."
      message is cleared when the timer elapses.

(kev)    970407 (e)
    + fileio.c (isready_c): Small tweak to the ifdefs for mklinux w/
      shared libraries.  This'll probably be needed for other systems
      with the up and coming GNU libc as well.

(tom)    970330 (d)
    + correct missing ']' on generated buffer name for shell output, e.g.,
      "[!ls]" rather than "[!ls" (reported by Paul Fox): (file.c).
    + correct unnecessary escaping of '!' in prompts that are not expanding
      the shell contents (reported by Paul Fox): (input.c).
    + modify semaphore used by 'working' mode to make the SIGALRM timer
      elapse when it is not in use, allowing idle process to swap out
      properly (reported by Bill Kipp): (display.c, etc).
    + correct filename parsing for MS-DOS/etc configuration by checking
      for device name (patch by Clark Morgan).

(tom)    970322 (c)
    + fixes for piping to vile in WinNT (patch by Clark Morgan).
    + add logic for visual-matches in color, WinNT (patch by Clark Morgan).
    + add vile-c-filt.exe to makefile.wnt, modify default keyword file
      on that system to vile.keywords (patch by Clark Morgan).
    + correct problem with MS-DOS/Win95/NT version of npopen.c that left
      temp-files after reading from pipe, because file-remove was done
      before closing (patch by Clark Morgan).

(tom)    970315 (b)
    + use macro GCC_UNUSED throughout to quiet gcc warnings about unused
      (dummy) parameters.
    + modify configure script to use VC_GCC_WARNINGS
    + add mode to control whether formatting adds one or two spaces
      after sentences (patch by Otto Lind).
    + handle C++ comments (patch by Otto Lind <[e-mail]>).
    + implement colored attributes in OS/2 video driver (os2vio.c)
    + modify writereg() so that it recomputes the region size after
      invoking the $write-hook; this is necessary since it may change the
      file's size (reported by Bob Wall <[e-mail]>).

(tom)    970314 (a)
    + modify c-filt.c, manfilt.c to simplify compiling w/o auto-configure
      "config.h".
    + modify MS-DOS/Win31/WinNT portion of npopen.c to leave input file
      descriptor alone when reading from pipe, solving a problem with
      applications hanging under Thompson Toolkit (patch by Clark O.
      Morgan <[e-mail]>)
    + correct inequality changed in 6.2g which is part of right-margin
      threshold computation (report and fix by William Yuan
      <[e-mail]>)
    + corrected definition of $(exec_prefix) in makefile.in (reported by
      Joachim Schimpf <[e-mail]>).
    + apply suggested casts in vms2unix.c to appease DEC C 5.3 (reported
      by Andy Harper and Graeme Miller).

This change log started on Wednesday Mar 12, 1997.