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dme/dme dme/dme DME.DOC DME version 1.45 Matthew Dillon July 1991 DME, (C)Copyright 1987-90, Matthew Dillon. All Rights Reserved. This software may be distributed for non-profit only. This software is FREEWARE, not shareware. Matthew Dillon 891 Regal Rd Berkeley, Ca. 94708 USA Source is avalable: (1) By regular mail (send a disk) (2) By Electronic mail: INTERNET: uunet.uu.net!overload!dillon OR dillon@overload.Berkeley.CA.US Donations welcome but not solicited (I ain't a starving artist). icon by Bryce Nesbitt text markers and the text-block stack by Kevin Seghetti (some of the new commands for 1.30). AREXX interface (Bill Hawes' ARexx REXX language interpreter) ported by Kim DeVaughn 1.42 additions by Markys Wenzel --------------------------------------------------------------------------- 0 Installation I Overview II Keymapping key and mouse mapping III Command Sequences DME commands IV File Particulars notes on loading and saving files, V Workbench Support VI Revision Summary revision numbering, changes made, etc... VII Compiling compiling instructions 0 INSTALLATION The NULL: device must be mounted to be able to use the EXECUTE command. This is so EXECUTE works even if the console window goes away. Otherwise, simply put DME in an accessable location (usually C:). Put the dme.icon file in the same directory as DME if you want to access the application from the workbench (dme.icon is not needed if accessed from a CLI or shell). People appear to have problems using the EXECUTE command when DME is run from the workbench. I have no solution yet. CONFIGURATION of default window placement, pen selection, and most editor modes (insert/overwrite, margin, etc...) is accomplished by bringing up DME, setting it up how you like, then selecting the SAVECONFIG menu option (saves to s:dme.config). I OVERVIEW See REVISIONS section for revisions. DME is an editor designed mainly for programmers. Although it is not a word processor, it does include many word processing features such as Word-Wrap and automatic paragraph formatting. Here is a quick 'features' list: -control language based on a rich command set accessed manually or via arbitrary mapping of keys. (Every key may be mapped to 128 different things via qualifier and mouse keys) -General variables, reference macros as variables, ENV: enviroment variables (1.30C and beyond). -fast visual response (it scrolls quickly)... even faster when BlitzFonts or similar text speedup utilities are installed. -title-line statistics showing your current position in the file, file name, whether the file has been modified or not, etc... -Multiple Windows, ability to iconify windows -Word Wrap and automatic paragraph formatting. -ability to map any KEY or MOUSE BUTTON combination. DME has been designed to allow easy expansion, and I intend to make many future improvments. It has not been designed for user friendliness, but is straight forward if you read this document [care]fully. AS OF 1.40 and until further notice DME no longer takes command line arguments other than file arguments, or workbench based window arguments. DME used to take arguments to specify window dimensions. Use the saveconfig command to setup default window parameters. The 1.40-41 Version is an experimental intermediate version, documentation may not be up to date. Normally, DME will automatically SOURCE two script files, S:.EDRC, and the .EDRC in your current directory. These files do not have to exist. These script files usually contain mappings and do things (for example, turn on savetabs). II KEYMAPPING MOUSE BUTTONS: The mouse buttons and combinations thereof may now be mapped. The default mappings for the mouse buttons are as follows: Left-button: Move cursor to current mouse position Right-button: Iconify window Left-button held down while moving mouse tracks the cursor The iconification features: -Remembers original window size and placement -Remembers placement of iconified window when you re-iconify later. Currently, you will crash the machine if you run out of memory and DME is unable to open the icon window or original window, so be careful. see below for mapping the mouse buttons and mouse movement. KEYBOARD: The rest of the Functional interface for DME is based on key/mouse/menu mappings and a rich command set. Unlike other text editors, any non-qualifier key in DME may be defined to have any meaning whatsoever. It just so happens that the default keymappings assign such things as the (return) key to the RETURN function, the (up) key to the UP function, etc... Keys are named by their keycap labels with the following exceptions: the name for Back-Space is BS the name for numeric keypad keys are prepended with an NK, except for the Enter key which is named 'ENTER'. The four cursor control keys are labeled UP, DOWN, LEFT, and RIGHT The three mouse buttons are labeled RMB, MMB, and LMB. NOTES: You must type commands in lower-case, except for text, which can be either lower or upper case, and for upper-case alpha keys when specifying keymaps (i.e. A and s-a are the same key). The exception is the AMIGA qualifier key, which uses 'A' instead of 'a'(Alt). Each key may be qualified with any combination of CTRL, ALT, SHIFT, AMIGA, or any of the MOUSE buttons. With 6 qualifiers (7 if your mouse has a middle button), you can assign up to 64 (128) different maps to each physical key on the keyboard. The CAPS-LOCK, when lit, is equivalent to SHIFT only for Alpha keys. The AMIGA-ALT (aA) combination isn't very usable since Intuition uses the sequence to duplicate a Mouse SELECT. Other AMIGA sequences are used by intuition for mouse movement and other things. Some other qualifier combinations may not be usable due to other special sequences. Some keys must be mapped by their lower-case keycap. That is, to map the '>' key (USA keyboard), you specify shift dot (s-.) ***EXAMPLES:*** tab tab a-a ALT a A-a AMIGA a sA-a SHIFT AMIGA a s-tab SHIFT tab c-tab CTRL tab ac-? ALT-CTRL ? s-f5 SHIFT F5 nk0 Numeric Keypad 0 cs-nk0 CTRL SHIFT Numeric Keypad 0 L-lmb Left Mouse button pressed L-mmove Mouse moved while left mouse button held down LR-lmb left mouse button hit while right mouse button held down s-. shift . ('>' for USA keyboards) *************** MAPPING MOUSE BUTTONS Mouse buttons serve both as QUALIFIERS and as KEYS. Thus, you can map both normal keystrokes which require a mouse button to be held down: map L-a ((left button and an a)) as well as the mouse keys themselves: map L-lmb ((left mouse key)) note that you had to specify the left mouse button down qualifier L as well as the left mouse button LMB. If you map the left mouse button, and also map a sequence such as left mouse button + a: map L-lmb tomouse map L-a ((hello)) Note that the first mapping will always get executed even if you intended L-a (that is, BOTH mappings would get executed). In order to avoid confusion you might want to UNMAP the system default mapping for the right mouse button (mapped to ICONIFY) if you wish to apply combinations to the right mouse button. MOUSE MOVEMENT is mapped with one or more mouse qualifiers (L, R, M), plus 'MMOVE' for the key. That is: map LR-mmove ((moving the mouse with both buttons held down)) Or how bout capping the characters under the mouse while moving the mouse? map LR-mmove (tomouse if cl (tlate -32)) DEFAULT KEYMAPPINGS: All Printable Ascii keys mapped to their ascii equivalent. BS, DEL, UP, DOWN, LEFT, RIGHT, TAB, S-TAB, and ENTER are mapped properly. These are the default system keymappings. map (a-c) (bcopy) map (a-d) (bdelete) map (a-down) (scrolldown) map (a-l) (while cu (tlate +32 right)) map (a-m) (bmove) map (a-r) (nextr) map (a-s) (bsource) map (a-u) (while cl (tlate -32 right)) map (a-up) (scrollup) map (bs) (bs) map (c-/) (escimm (find )) map (c-]) (ref) map (c-[) (ctags) map (c-1) (goto block) map (c-b) (block) map (c-c) () map (c-del) (remeol) map (c-down) (pagedown) map (c-esc) (recall) map (c-f) (reformat) map (c-g) (escimm (goto )) map (c-i) (insertmode on) map (c-j) (join) map (c-l) (wleft) map (c-n) (next) map (c-o) (insertmode off) map (c-p) (prev) map (c-q) (quit) map (c-r) (wright) map (c-s) (split first down) map (c-u) (unblock) map (c-up) (pageup) map (c-w) (wordwrap toggle) map (del) (del) map (down) (down) map (enter) (return) map (esc) (esc) map (f1) (escimm (insfile )) map (f10) (saveold quit) map (f2) (escimm (newfile )) map (f3) (escimm (newwindow newfile )) map (f6) (saveold iconify) map (f7) (escimm (bsave )) map (f8) (saveold escimm (newfile )) map (f9) (saveold) map (L-lmb) (tomouse) map (L-mmo) (tomouse) map (left) (left) map (R-rmb) (iconify) map (return) (return insline up firstnb down) map (right) (right) map (s- ) (( )) map (s-del) (deline) map (s-down) (bottom) map (s-left) (first) map (s-right) (last) map (s-tab) (backtab) map (s-up) (top) map (sa-s) (unblock block block bsource) map (tab) (tab) map (up) (up) III COMMAND SEQUENCES DME has a rich command set which allows you to embed commands within commands, or specify multiple commands in a row. A command consists of a KEYWORD followed by a FIXED number of arguments (0, 1, 2...). The argument delimeter in DME is a SPACE. Therefore, to embed strings containing spaces as a single argument, you must surround the string with (string) (backsinglequote-string-singlequote). TEXT to be written as if typed is also specified via a string in backquote-quotes. For example: right right (hello) right right (hello) enter down map f4 (right right) map f5 (left left) map f4 ((hello)) Reiterating (because this is important!)... If a command expects ONE argument, then it really does expect a single argument, and any remaining arguments are thought to be the next command... so: map f4 right -right is only one word, so no need for (). map f4 (right right) -we want to map f4 to two rights... we need the () or the second right will not be part of the map. map c-del (repeat cright del) -this is already implimented as REMEOL, but shown here for clarity. Some arguments will eventually be fed through the command interpreter more than once. The MAP command is a good example. When you execute a MAP command, the first run through the command interpreter installs the map string minus a set of quotes. So, if you want to specify text, you must enclose the text in two sets of ((text)) because the map string gets passed through the command interpreter again when you hit the mapped key. Here are some more complex examples: map f4 (right right (hello) left left) *RIGHT* map f4 right right hello left left *WRONG* map f4 (map f4 ((hello))) -the first time you hit F4, it's command is to re-map itself to the TEXT (hello). (gads!). map c-i (repeat tr (( ))) -example of how to embed a space in a map and repeat (goes through command interpreter three times!). An easy way to fool around executing commands or making maps is either to use the ESC key (which enters command mode), or a-S (alt-shift-s), which EXECUTES the current DME line that the cursor is on.... so you can use DME to edit and test your new keymappings. STRING VARIABLES String variables are replaced with their contents. Three specification forms are allowed: $varname - varname can only consist of a-z,A-Z,0-9,-,_ $(varname) - anything not containing a '(' or ')' $`varname' - anything not containing a '`' or ''' Two special variables exist: filename - the current filename scanf - the current scanf'd string (see SCANF below) lineno - the current cursor line number (1 .. N) colno - the current cursor column number (1 .. N) Other variables cause a search of three variable domains to find the contents. For example, if you give $DMEFONT: (1) An Internal variable named DMEFONT is searched for. Internal variables are case sensitive. (see SET, UNSET) (2) An Enviroment variable name DMEFONT is searched for. Enviroment variables are NOT case sensitive. (see SETENV, UNSETENV). The 1.3 ENV: is used. (3) A DME keymap or menu definition named DMEFONT is searched for. This allows you to say something like $sa-tab to insert the contents of the shift-alt-tab keymap. (see MAP, UNMAP, and MENU oriented commands). The reason for the other two forms of variable specifiction is to allow one to access strangely named variables (with puncuation and other crap). SPECIAL NOTE: What is wrong with this command? repeat 100 (first ($myvar)) What is wrong is that $myvar is evaluated BEFORE the repeat is executed. myvar might contain characters that would confuse the command specification when. That is, if myvar contained a '(' you could get something like: repeat 100 (fist ((()) which is obviously incorrect. By using \ you can cause $myvar to be evaluated at loop-execution time rather than before: repeat 100 (first (\$myvar)) These kinds of problems can also occur when you do keymaps... you probably do not want to evaluate the variable at keymap-entry time, but rather would want the variable evaluated at keymap-execution time. On the otherhand, this is perfectly allowable: set x (tlate +1) repeat 100 ($x) Which executes the command (tlate +1) 100 times... By NOT surrounding the variable with parens (depends on the situation), the variable is executed rather than inserted as text. SPECIAL CHARACTERS ^ is used to introduce a control character. For example, ^c would embed a control-c. You cannot embed c-@ (ascii code 0). backslash \ is used to override special meanings. The next character is overriden. map c-a ((^l)) -map control a to produce a control l map c-a ((\\\^l)) -map control a to produce a "^l". The first \ overides the second, and the third overides the ^. COMMAND LIST: (text) -enter text as if typed. key -execute a keymap as a macro (example: c-a) header-item -execute a menu item as a macro (example: Project-Save) (case independant) ADDPATH path -Add the specified symbolic directory to DME's special search path (see REF and CTAGS). ARPINSFILE -INSFILE filerequestor, only if ARP.LIBRARY installed ARPLOAD -NEWFILE filerequestor, only if ARP.LIBRARY installed ARPSAVE -SAVEAS filerequestor, only if ARP.LIBRARY installed BACK -same as BS BACKTAB -backward tab BCOPY -copy block before cursor line BDELETE -delete the block BGPEN pen -set background pen BLOCK -Set start or end of block BMOVE -move block before cursor line BOTTOM -Move to Bottom of File BS -backspace, (delete char to left of cursor) BSAVE file -save the block to a file BSOURCE -source current text block as if it were a script file CHFILENAME name -change the name of the working file CTAGS -search for the tag under the cursor (see below) DEL -delete, (deletes char under cursor) DELINE -delete line DOWN -cursor down DOWNADD -cursor down. If at bottom of text, add a line. ESC -toggle manual command entry mode ESCIMM arg -go into command entry mode prompting with a predefined string. EXECUTE comm -Execute a CLI command FGPEN pen -Set foreground pen FIND string -SET the search pattern and do a NEXT FINDR s1 s2 -Set find and replace patterns and do one find/rep. FINDSTR string -SET the search string pattern FIRST -move to column 1 FIRSTNB -Move to first non-blank in line. GOTO BLOCK -Goto the beginning of the marked block. GOTO START -same as GOTO BLOCK. undefined if no block GOTO END -goes to the END of the marked block. undef. if no blk. GOTO [+/-]N -Goto an absolute or relative line number HEIGHT N -set height in PIXELS for any new windows HGPEN pen -set highlight pen ICONIFY -iconify the window IF cnd act -IF/WHILE/IFELSE.. SEE BELOW IFELSE cnd ifact elseact IGNORECASE what -set case ignore for seaches. what = on, off, or toggle INSERTMODE what -set INSERTMODE. what = on, off, or toggle INSFILE name -insert a file into the current text. INSLINE -insert line JOIN -join next line to line at cursor JUSTIFY how -simple text justification. Currently only 'full' justification supported (justify full). LAST -move one beyond the last non-space in a line. LEFT -cursor left LEFTEDGE N -set leftedge on the screen in PIXELS for any new window MAP key map -map a key to a keymap MARGIN N -set WordWrap and paragraph formatting margin (related to WORDWRAP and REFORMAT) MENUADD hdr item cmd -add menu item MENUDEL hdr item -delete menu item MENUDELHDR hdr -delete menu header MENUCLEAR -delete entire menu MENUON -enable menus (multiple calls are stacked) MENUOFF -disable menus (multiple calls are stacked) MODIFIED on/off/toggle -set modified flag manually NEWFILE name -replace current text with new file NEWWINDOW -open new window using default window parameters NEXT -find next occurance of search pattern NEXTR -find next occurance and replace NULL -no operation OPENWINDOW geo -open new window using specified geometry. Geometry is specified as: +/-leftedge+/-topedge+/-width+/-height, where negative numbers denote values relative to the width or height of the screen. For example, the following opens a nearly full-screen window leaving 10 pixels above, below, to the left, and to the right: openwindow +10+10-10-10 The following opens a window in the upper right hand corner of width 320 and height 100. openwindow -320+0+320+100 openwindow -320+0-0+100 (same thing) openwindow -320-100-0-0 (lower rght hand corner) PAGEDOWN -pagedown a partial page (see PAGESET) PAGESET n -n PERCENT (0 to 100). page step size relative to the current number of rows in the window. PAGEUP -pageup a partial page (see PAGESET) PING n -set a text marker (0-9). PONG n -move to a previously set text marker (0-9) PREV -find previous occurance of search pattern PREVR -find previous occurance and replace PUSHMARK -push the currently marked block onto a stack and unhighlight the block POPMARK -pop the block stack and highlight the popped block PURGEMARK -clear the mark stack QUIT -quit RECALL -recall most recently entered command. Must be used from a keymap (c-esc). REF -reference string under cursor (see below) REFORMAT -reformat paragraph using the margin. REMEOL -Remove text under and beyond the cursor. REMPATH wild -Remove one or more symbolic directorys from DME's special path... a */? wildcard is acceptable. REPEAT cnt comm -SEE BELOW REPSTR string -SET the replace string pattern RESETTOGGLE N -clear toggle array entry N(0..31) RESIZE cols rows-Resize current window. E.G: (resize 70 23) RETURN -same as (FIRST DOWNADD) RIGHT -cursor right RX -ARexx macro, no args (RX macname) RX1 -ARexx macro, one arg (RX1 macname arg1) RX2 -ARexx macro, two args (RX2 macname arg1 arg2) SAVEAS file -save current text under a different name (title line name does not change) SAVECONFIG -save current editor configuration to s:dme.config SAVEMAP file -save user keymappings SAVEOLD -save current text under current name SAVESMAP file -save all keymappings, including system keymaps SAVETABS on/off -Optimize file saves by crunching spaces to tabs. The default is OFF. SCANF ctlstr -scan the string at the current text position (C scanf) example: (scanf %s) SEE BELOW SCREENBOTTOM -Move cursor to the bottom of the screen. SCREENTOP -Move cursor to the top of the screen SCROLLUP -Scroll up without moving cursor SCROLLDOWN -Scroll down without moving cursor SET var str -create/modify an internal variable (access w/ $) SETENV var str -create/modify an enviroment variable (1.3 ENV:) SETFONT font sz -Set the window's font. ex: (setfont topaz.font 11) SETPARCOL col -Set the LEFT margin for word wrap mode paragraphing & reformat. MUST be less than MARGIN. SETTOGGLE N -set toggle array entry N (0..255) SOURCE file -source a script file. '#' in first column for comment SPLIT -Split line at cursor SWAPMARK -PUSHMARK, swap top two marks on stack, POPMARK TAB -forward tab TABSTOP N -Set tab stops every N. does not effect text load TITLE (title) -set window title manually TLATE [+/-]N -translate character by +N or -N, or set character to exactly N if no + or -. (e.g. TLATE +65 TLATE 3) TMPHEIGHT N -set window height for next window only, pixels TMPWIDTH N -set window width for next window only, pixels TOGGLE N -flip toggle array entry N (0..255) (See IF) TOMOUSE -moves cursor to mouse position TOP -Move to Top of File TOPEDGE N -set topedge in the screen in PIXELS for any new window TPEN pen -set pen for title bar rendering UNBLOCK -clear the block markers for the current window UNDELINE -insert most recently deleted line (only last line saved) UNDO -undo current line (must be mapped to a key to work) UNJUSTIFY -removes extra spaces in a line UNMAP key -unmap a key UP -cursor up UNSET var -delete an internal variable UNSETENV var -delete an enviroment variable WHILE cnd act -(see below) WIDTH N -set width in PIXELS for any new window WLEFT -move to beginning of previous word. If in the middle of a word, move to beginning of current word. WORDWRAP on/off/toggle -Word Wrap mode (related to MARGIN) WRIGHT -move to beginning of next word ------------------------------------------------------------- ------------- More Info on Complicated Commands ----------------- ------------------------------------------------------------- MENUOFF/ON -This command will enable/disable menus. Users who have a whole bunch of MENUADD commands in their .EDRC should note that disabling menus at the beginning will speed up the MENUADD commands. Then reenable menus at the end. These calls are stackable in that if you call MENUOFF, say, twice, it will take two MENUON commands to restore menus. The reverse is not true. CTAGS (c-[) -(1.30B and beyond) Compatible with Aztec's CTAGS program. This command searches for the subroutine name under the cursor in the associated tags file ("tags" in the directory holding the file currently being edited). Also, the file "tags" in directories specified by the special DME path (see ADDPATH and REMPATH) will be searched. If the tag is found, it loads the file the subroutine resides in if neccesary, then WindowToFront()'s the window, ActivateWindow()s it, and GOTO's the line where the subroutine starts. The search within the source file is anchored to the left column. If the file is already loaded, it is not reloaded. This enables a programmer to quickly trace subroutines over an arbitrary number of files. The tags file contains one or more lines of the following format: subroutine-name file-name /^search-pattern (that's a slash and a carrot, then the pattern) -- EXAMPLE of 'TAGS' file: setpen cmd1.c /^setpen( do_up cmd1.c /^do_up( -- SPECIAL NOTE: CTAGS will work even if you are not in the directory containing the file. You can thus place a tags file in the directory containing the files it references, and the filenames WITHIN the tags file need not be a full path. REF (c-]) -(1.28d and beyond). This is a very powerful new command that allows you to bring up a reference to a keyword with a single keystroke. This is useful for programmers who have on-line documentation or fully commented include files. DME opens a window just big enough to fit the reference. NOTE: The new CTAGS command may be more suited to your application. The reference keyword is the alpha-numeric string currently under the cursor. REF will search the file DME.REFS in the directories listed by the special DME path (see ADDPATH and REMPATH). The file must be built by the user and each line has the following format: (keyword) (nolines/endstring) (file) (searchstr/##seekpos) Surrounding the keywords with `' or () is optional if the keyword does not contain spaces. keyword -keyword under cursor nolines/ends-either a number (the number of lines in the reference) or a string denoting the end of the reference when found. file -the file containing the reference material searchstr/##-search string in file that indicates the beginning of the reference, or two hashes (##) and the seek position in decimal (like ##2343). The latter method is used mainly for reference- generator programs. Upon finding a successful keyword match the specified file is openned and the seach string searched for. If a seek position was specified no search is made and a seek is made to the beginning of the reference. If found, the indicated number of lines (if a number is specified for <nolines/ends>) or until a match with the endstring (if a string was specified) will be placed in a temporary file and a new DME window brought up. The temporary file is then deleted. When looking for matches, the compare is anchored at the beginning of each line in the file. Thus, any spaces in front of the string in the file must be duplicated. T: must be assigned to a temporary directory, usually RAM: See the included example DME.REFS file. The most common things referenced are the autodocs and commented include files. Some modification of the included DME.REFS.* files may be required due to differences in include file and autodoc format. SCANF ctlstr -This is equivalent to the C scanf() function with the restriction that only one conversion is allowed, that conversion being a string. Thus: scanf %s will place the string under the cursor in the variable $scanf scanf %4s The first four chars of the string. scanf %[0123456789] will scan the string while it contains specified chars (e.g. scan a number) scanf %[~,] will scan the string until it finds a ','. The variable $scanf may be used as an argument in any command. Example: (insfile $scanf). NOTE: If using $scanf in a macro, you probably want to precede it with a \ to prevent it from being evaluated at macro-creation time. REPEAT N arg -Repeat (arg) N times. Apart from being a number, N can also be one of: line Current line # (lines begin at 1) lbot #lines to the bottom, including current line cleft column # (cols begin at 0) cright #chars to eol, including current char under cursor tr #char positions to next tab tl #char positions to next back tab Certain commands can abort a REPEAT loop. Specifically, any FIND[R], NEXT[R], or PREV[R] in which the search string is NOT found will abort a REPEAT. Most operations which can go out of bounds, such as UP, LEFT, RIGHT, DOWN, also abort a repeat. Specifying -1 as N causes REPEAT to go on forever (well, actually, 0xFFFFFFFF times) or until an abort. IF [!]condition arg WHILE [!]condition arg IFELSE [!]condition arg else arg If the specified condition is true, execute the argument. For WHILE, the argument is executed until the condition is false (be careful!). the optional '!' inverts the logic. Conditions: # if toggle entry # is SET. there are 256 toggles (0..255) t if On line 1 b if On last line l if At column 0 r if At end of line (spaces below and beyond) m if Text has been modified i if in insert mode x[<=>]# if column position (starts at 1) is (any OR combo of <, =, or >) than some number. Example: x<=20 y[<=>]# if Line number (starts at 1) is (same as for x) cl character under cursor is lower case alpha cu character under cursor is upper case alpha ca character under cursor is alpha-numeric cn character under cursor is numeric c[<=>]# character under cursor is ascii code # (# in decimal) optional conditionals as in 'x' and 'y'. cb cursor within a block Example: simulating an insert mode toggle: ALT-i (not CTL-i) map a-i (ifelse 0 (toggle 0 insertmode OFF) (toggle 0 insertmode ON)) Example: while lower case, map to upper case and move right. map c-U (while cl (tlate -32 right)) Example: Search/Replace all of text. map c-R (escimm (findstr ) escimm (repstr ) repeat -1 nextr) if c<32 ((char under cursor is smaller than 32)) if c<>32 ((char under cursor is not equal to 32)) while !b down IV FILE PARTICULARS No Matter what you set internal tabs to, tabs in disk files will be 8. This allows you to use your favorite tabs stops (mine are 4) and still have your disk files compatible with TYPE, a printer, etc... DME by default doesn't bother to optimize when writing out files and simply uses spaces. If you (SAVETABS on) before saving (or in your S:.EDRC, etc...), DME will attempt to optimize the file by placing TABS in appropriate places. DME will not place any TABS after the first single, back, or double quote is encountered in a line. If this does not cover every situation in your particular application that you want to be *sure* no tabs will occur in sensitive sections, then you should not use (SAVETABS on). It should be noted that since DME removes spaces at the end of the line, editing UUENCODED ascii files will not work for uuencoded lines which end with a space. The nominal fix is to add an extra character after each uuencoded line (anything) in the proper column, which is ignored by the UUDECODE program. The command to save the current document under the default name is SAVEOLD, *not* SAVE. SAVE is not a valid command. This is to prevent people who have not read the documentation from assuming 'save' takes an argument (and screwing up their work). SAVEOLD does NOT take an argument, SAVEAS does. SAVEOLD/SAVEAS do not automatically backup the destination file. If you are working in an enviroment where you are worried about ensuring a viable copy can be recovered if your Amiga crashes in the middle of the save, you can write a macro to save the file into two places. Usually, people backup their working disks so this is not neccesary. Workbench Support: If DME is run from the workbench, it will automatically construct an icon file when you save a document. If run from a CLI, no icon file is generated. V WORKBENCH SUPPORT DME V1.26 and beyond support the workbench in the following way: (1) you can click on the DME icon to bring up DME with the file "unnamed". (2) you can select one or more standard ascii documents which have DME as the default tool. If DME has no knowlege of a text icon, it uses its own. Command line arguments are passed to DME via the tooltypes entries for DME's application icon or via individual document icons. The following format is used: (This is a hack, no?) ****** WARNING, 1.40-41, most workbench options do not work. ARG=flag See the OVERVIEW section for allowed flags. Only one argument per line is allowed (sorry). The tooltypes for the application icon are processed first, then the tooltypes for each document icon are processed before each file is loaded. ARG= -t10 ARG= -l10 VII COMPILING DME now compiles under either Manx C or Lattice C (V5.02 and beyond). dres.library is no longer required.