Annotation of src/usr.bin/mg/mg.1, Revision 1.92
1.92 ! lum 1: .\" $OpenBSD: mg.1,v 1.91 2015/09/09 19:03:13 lum Exp $
1.34 kjell 2: .\" This file is in the public domain.
1.9 niklas 3: .\"
1.92 ! lum 4: .Dd $Mdocdate: September 9 2015 $
1.2 deraadt 5: .Dt MG 1
6: .Os
7: .Sh NAME
8: .Nm mg
9: .Nd emacs-like text editor
10: .Sh SYNOPSIS
11: .Nm mg
1.36 sobrado 12: .Op Fl n
13: .Op Fl f Ar mode
14: .Op + Ns Ar number
15: .Op Ar
1.2 deraadt 16: .Sh DESCRIPTION
17: .Nm
1.3 aaron 18: is intended to be a small, fast, and portable editor for
1.33 kjell 19: people who can't (or don't want to) run emacs for one
1.2 deraadt 20: reason or another, or are not familiar with the
21: .Xr vi 1
1.6 aaron 22: editor.
23: It is compatible with emacs because there shouldn't
1.2 deraadt 24: be any reason to learn more editor types than emacs or
25: .Xr vi 1 .
1.16 deraadt 26: .Pp
1.17 vincent 27: The options are as follows:
1.21 henning 28: .Bl -tag -width Ds
1.36 sobrado 29: .It + Ns Ar number
1.16 deraadt 30: Go to the line specified by number (do not insert
1.33 kjell 31: a space between the
32: .Sq +
33: sign and the number).
1.20 mjc 34: If a negative number is specified, the line number counts
35: backwards from the end of the file i.e. +-1 will be the last
36: line of the file, +-2 will be second last, and so on.
1.36 sobrado 37: .It Fl f Ar mode
1.17 vincent 38: Run the mode command for all buffers created from
39: arguments on the command line, including the
40: scratch buffer and all files.
1.21 henning 41: .It Fl n
42: Turn off backup file generation.
1.16 deraadt 43: .El
1.33 kjell 44: .Sh WINDOWS AND BUFFERS
45: When a file is loaded into
46: .Nm ,
47: it is stored in a
48: .Em buffer .
49: This buffer may be displayed on the screen in more than one window.
50: At present, windows may only be split horizontally, so each window is
51: delineated by a modeline at the bottom.
52: If changes are made to a buffer, it will be reflected in all open windows.
1.70 florian 53: .Pp
54: If a file is changed outside
55: .Nm
56: and its buffer is about to be changed,
57: .Nm
58: prompts if the change should go ahead (y), not go ahead (n) or if the buffer
59: should be reverted (r) to the latest file on disk.
1.43 kjell 60: .Pp
61: If a buffer name begins and ends with an asterisk, the buffer is considered
1.44 jmc 62: throwaway; i.e. the user will not be prompted to save changes when
1.43 kjell 63: the buffer is killed.
1.33 kjell 64: .Sh POINT AND MARK
65: The current cursor location in
66: .Nm
67: is called the
1.39 jmc 68: .Em point
1.37 kjell 69: (or
70: .Em dot ) .
1.33 kjell 71: It is possible to define a window-specific region of text by setting a second
72: location, called the
73: .Em mark .
74: The
75: .Em region
76: is the text between point and mark inclusive.
77: Deleting the character at the mark position leaves
78: the mark at the point of deletion.
79: .Pp
80: Note: The point and mark are window-specific in
81: .Nm ,
82: not buffer-specific, as in other emacs flavours.
1.64 lum 83: .Sh BACKUP FILES
1.65 jmc 84: Backup files have a
85: .Sq ~
86: character appended to the file name and
1.64 lum 87: are created in the current working directory by default.
88: Whether to create backup files or not can be toggled with the
1.90 jmc 89: make-backup-files command.
1.64 lum 90: The backup file location can either be in the current
1.65 jmc 91: working directory, or all backups can be moved to a
92: .Pa ~/.mg.d
93: directory where files retain their path name to retain uniqueness.
1.64 lum 94: Use the backup-to-home-directory to alternate between these two locations.
1.65 jmc 95: Further, if any application creates backup files in the
96: .Ev TMPDIR ,
1.64 lum 97: these can be left with the leave-tmpdir-backups command.
1.56 lum 98: .Sh TAGS
99: .Nm
1.57 lum 100: supports tag files created by
1.56 lum 101: .Xr ctags 1 ,
1.57 lum 102: allowing the user to quickly locate various object definitions.
103: Note though that emacs uses etags, not ctags.
1.61 lum 104: .Sh CSCOPE
105: .Nm
106: supports navigating source code using cscope.
107: However,
108: .Nm
109: requires cscope and cscope-indexer executables to be present in
110: .Ev PATH
111: for it to work.
1.33 kjell 112: .Sh DEFAULT KEY BINDINGS
1.53 lum 113: Normal editing commands are very similar to GNU Emacs.
1.47 sobrado 114: In the following examples, C-x means Control-x, and M-x means Meta-x,
1.54 lum 115: where the Meta key may be either a special key on the keyboard
1.4 deraadt 116: or the ALT key; otherwise ESC followed by the key X works as well.
117: .Pp
1.66 jmc 118: .Bl -tag -width xxxxxxxxxxxx -offset indent -compact
1.37 kjell 119: .It C-SPC
120: set-mark-command
121: .It C-a
122: beginning-of-line
123: .It C-b
124: backward-char
1.61 lum 125: .It C-c s c
126: cscope-find-functions-calling-this-function
127: .It C-c s d
128: cscope-find-global-definition
129: .It C-c s e
130: cscope-find-egrep-pattern
131: .It C-c s f
132: cscope-find-this-file
133: .It C-c s i
134: cscope-find-files-including-file
135: .It C-c s n
136: cscope-next-symbol
137: .It C-c s p
138: cscope-prev-symbol
139: .It C-c s s
140: cscope-find-this-symbol
141: .It C-c s t
142: cscope-find-this-text-string
1.37 kjell 143: .It C-d
144: delete-char
145: .It C-e
146: end-of-line
147: .It C-f
148: forward-char
149: .It C-g
150: keyboard-quit
151: .It C-h C-h
152: help-help
153: .It C-h a
154: apropos
155: .It C-h b
156: describe-bindings
157: .It C-h c
158: describe-key-briefly
159: .It C-j
160: newline-and-indent
161: .It C-k
162: kill-line
163: .It C-l
164: recenter
165: .It RET
166: newline
167: .It C-n
168: next-line
169: .It C-o
170: open-line
171: .It C-p
172: previous-line
173: .It C-q
174: quoted-insert
175: .It C-r
176: isearch-backward
177: .It C-s
178: isearch-forward
179: .It C-t
180: transpose-chars
181: .It C-u
182: universal-argument
183: .It C-v
184: scroll-up
185: .It C-w
186: kill-region
187: .It C-x C-b
188: list-buffers
189: .It C-x C-c
190: save-buffers-kill-emacs
191: .It C-x C-f
192: find-file
193: .It C-x C-g
194: keyboard-quit
195: .It C-x C-l
196: downcase-region
197: .It C-x C-o
198: delete-blank-lines
199: .It C-x C-q
200: toggle-read-only
201: .It C-x C-r
202: find-file-read-only
203: .It C-x C-s
204: save-buffer
205: .It C-x C-u
206: upcase-region
207: .It C-x C-v
208: find-alternate-file
209: .It C-x C-w
210: write-file
211: .It C-x C-x
212: exchange-point-and-mark
213: .It C-x (
214: start-kbd-macro
1.45 nicm 215: .It C-x \&)
1.37 kjell 216: end-kbd-macro
217: .It C-x 0
218: delete-window
219: .It C-x 1
220: delete-other-windows
221: .It C-x 2
222: split-window-vertically
223: .It C-x 4 C-f
224: find-file-other-window
225: .It C-x 4 C-g
226: keyboard-quit
227: .It C-x 4 b
228: switch-to-buffer-other-window
229: .It C-x 4 f
230: find-file-other-window
231: .It C-x =
232: what-cursor-position
233: .It C-x ^
234: enlarge-window
235: .It C-x `
236: next-error
237: .It C-x b
238: switch-to-buffer
239: .It C-x d
240: dired
241: .It C-x e
242: call-last-kbd-macro
243: .It C-x f
244: set-fill-column
245: .It C-x g
246: goto-line
1.59 lum 247: .It C-x h
248: mark-whole-buffer
1.37 kjell 249: .It C-x i
250: insert-file
251: .It C-x k
252: kill-buffer
253: .It C-x n
254: other-window
255: .It C-x o
256: other-window
257: .It C-x p
258: previous-window
259: .It C-x s
260: save-some-buffers
261: .It C-x u
262: undo
263: .It C-y
264: yank
265: .It C-z
266: suspend-emacs
267: .It M-C-v
268: scroll-other-window
269: .It M-SPC
270: just-one-space
1.76 lum 271: .It M-!
272: shell-command
1.56 lum 273: .It M-.
274: find-tag
275: .It M-*
276: pop-tag-mark
1.23 deraadt 277: .It M-%
1.37 kjell 278: query-replace
1.4 deraadt 279: .It M-<
1.37 kjell 280: beginning-of-buffer
1.4 deraadt 281: .It M->
1.37 kjell 282: end-of-buffer
283: .It M-\e
284: delete-horizontal-space
1.49 kjell 285: .It M-^
286: join-line
1.37 kjell 287: .It M-b
288: backward-word
289: .It M-c
290: capitalize-word
291: .It M-d
292: kill-word
293: .It M-f
294: forward-word
1.92 ! lum 295: .It M-h
! 296: mark-paragraph
1.37 kjell 297: .It M-l
298: downcase-word
1.48 kjell 299: .It M-m
300: back-to-indentation
1.37 kjell 301: .It M-q
302: fill-paragraph
303: .It M-r
304: search-backward
305: .It M-s
306: search-forward
307: .It M-u
308: upcase-word
309: .It M-v
310: scroll-down
311: .It M-w
312: copy-region-as-kill
313: .It M-x
314: execute-extended-command
315: .It M-{
316: backward-paragraph
1.59 lum 317: .It M-|
318: shell-command-on-region
1.37 kjell 319: .It M-}
320: forward-paragraph
321: .It M-~
322: not-modified
323: .It M-DEL
324: backward-kill-word
325: .It C-_
326: undo
327: .It )
328: blink-and-insert
329: .It DEL
330: delete-backward-char
1.4 deraadt 331: .El
332: .Pp
1.37 kjell 333: For a complete description of
334: .Nm
335: commands, see
336: .Sx MG COMMANDS .
337: To see the active keybindings at any time, type
1.4 deraadt 338: .Dq M-x describe-bindings .
1.37 kjell 339: .Sh MG COMMANDS
1.33 kjell 340: Commands are invoked by
341: .Dq M-x ,
342: or by binding to a key.
343: Many commands take an optional numerical parameter,
344: .Va n .
345: This parameter is set either by
346: M-<n> (where
347: .Va n
348: is the numerical argument) before the command, or by
1.60 lum 349: one or more invocations of the universal argument, usually bound to C-u.
1.33 kjell 350: When invoked in this manner, the value of the numeric parameter to
351: be passed is displayed in the minibuffer before the M-x.
1.39 jmc 352: One common use of the parameter is in mode toggles (e.g.\&
1.37 kjell 353: make-backup-files).
354: If no parameter is supplied, the mode is toggled to its
355: alternate state.
356: If a positive parameter is supplied, the mode is forced to on.
357: Otherwise, it is forced to off.
358: .\"
359: .Bl -tag -width xxxxx
360: .It apropos
361: Help Apropos.
362: Prompt the user for a string, open the *help* buffer,
363: and list all
364: .Nm
365: commands that contain that string.
1.79 lum 366: .It audible-bell
367: Toggle the audible system bell.
1.37 kjell 368: .It auto-execute
369: Register an auto-execute hook; that is, specify a filename pattern
370: (conforming to the shell's filename globbing rules) and an associated
371: function to execute when a file matching the specified pattern
372: is read into a buffer.
373: .It auto-fill-mode
374: Toggle auto-fill mode (sometimes called mail-mode),
375: where text inserted past the fill column is automatically wrapped
376: to a new line.
377: .It auto-indent-mode
1.39 jmc 378: Toggle indent mode, where indentation is preserved after a newline.
1.48 kjell 379: .It back-to-indentation
380: Move the dot to the first non-whitespace character on the current line.
1.62 lum 381: .It backup-to-home-directory
1.65 jmc 382: Save backup copies to a
383: .Pa ~/.mg.d
384: directory instead of working directory.
1.62 lum 385: Requires make-backup-files to be on.
1.37 kjell 386: .It backward-char
387: Move cursor backwards one character.
388: .It backward-kill-word
389: Kill text backwards by
390: .Va n
391: words.
392: .It backward-paragraph
393: Move cursor backwards
394: .Va n
395: paragraphs.
396: Paragraphs are delimited by <NL><NL> or <NL><TAB> or <NL><SPACE>.
397: .It backward-word
398: Move cursor backwards by the specified number of words.
399: .It beginning-of-buffer
400: Move cursor to the top of the buffer.
401: .It beginning-of-line
402: Move cursor to the beginning of the line.
403: .It blink-and-insert
404: Self-insert a character, then search backwards and blink its
1.68 sobrado 405: matching delimiter.
406: For delimiters other than
1.37 kjell 407: parenthesis, brackets, and braces, the character itself
408: is used as its own match.
409: .It bsmap-mode
1.60 lum 410: Toggle bsmap mode, where DEL and C-h are swapped.
1.42 sobrado 411: .It c-mode
412: Toggle a KNF-compliant mode for editing C program files.
1.37 kjell 413: .It call-last-kbd-macro
414: Invoke the keyboard macro.
415: .It capitalize-word
416: Capitalize
417: .Va n
418: words; i.e. convert the first character of the word to
419: upper case, and subsequent letters to lower case.
420: .It cd
421: Change the global working directory.
422: See also global-wd-mode.
1.73 florian 423: .It column-number-mode
424: Toggle whether the column number is displayed in the modeline.
1.37 kjell 425: .It copy-region-as-kill
426: Copy all of the characters in the region to the kill buffer,
427: clearing the mark afterwards.
428: This is a bit like a kill-region followed by a yank.
429: .It count-matches
430: Count the number of lines matching the supplied regular expression.
431: .It count-non-matches
432: Count the number of lines not matching the supplied regular expression.
1.61 lum 433: .It cscope-find-this-symbol
434: List the matches for the given symbol.
435: .It cscope-find-global-definition
436: List global definitions for the given literal.
437: .It cscope-find-called-functions
438: List functions called from the given function.
439: .It cscope-find-functions-calling-this-function
440: List functions calling the given function.
441: .It cscope-find-this-text-string
442: List locations matching the given text string.
443: .It cscope-find-egrep-pattern
444: List locations matching the given extended regular expression pattern.
445: .It cscope-find-this-file
446: List filenames matching the given filename.
447: .It cscope-find-files-including-file
448: List files that #include the given filename.
449: .It cscope-next-symbol
450: Navigate to the next match.
451: .It cscope-prev-symbol
452: Navigate to the previous match.
453: .It cscope-next-file
1.68 sobrado 454: Navigate to the next file.
1.61 lum 455: .It cscope-prev-file
456: Navigate to the previous file.
457: .It cscope-create-list-of-files-to-index
458: Create cscope's List and Index in the given directory.
1.37 kjell 459: .It define-key
1.39 jmc 460: Prompts the user for a named keymap (mode),
1.40 sobrado 461: a key, and an
462: .Nm
463: command, then creates a keybinding in the appropriate
1.37 kjell 464: map.
465: .It delete-backward-char
466: Delete backwards
467: .Va n
468: characters.
469: Like delete-char, this actually does a kill if presented
470: with an argument.
471: .It delete-blank-lines
472: Delete blank lines around dot.
473: If dot is sitting on a blank line, this command
474: deletes all the blank lines above and below the current line.
475: Otherwise, it deletes all of the blank lines after the current line.
476: .It delete-char
477: Delete
478: .Va n
479: characters forward.
480: If any argument is present, it kills rather than deletes,
481: saving the result in the kill buffer.
482: .It delete-horizontal-space
483: Delete any whitespace around the dot.
484: .It delete-leading-space
485: Delete leading whitespace on the current line.
486: .It delete-trailing-space
487: Delete trailing whitespace on the current line.
488: .It delete-matching-lines
489: Delete all lines after dot that contain a string matching
490: the supplied regular expression.
491: .It delete-non-matching-lines
492: Delete all lines after dot that contain a string matching
493: the supplied regular expression.
494: .It delete-other-windows
495: Make the current window the only window visible on the screen.
496: .It delete-window
497: Delete current window.
498: .It describe-bindings
499: List all global and local keybindings, putting the result in
500: the *help* buffer.
501: .It describe-key-briefly
502: Read a key from the keyboard, and look it up in the keymap.
503: Display the name of the function currently bound to the key.
1.74 florian 504: .It diff-buffer-with-file
505: View the differences between buffer and its associated file.
1.37 kjell 506: .It digit-argument
507: Process a numerical argument for keyboard-invoked functions.
508: .It downcase-region
509: Set all characters in the region to lower case.
510: .It downcase-word
511: Set characters to lower case, starting at the dot, and ending
512: .Va n
513: words away.
514: .It emacs-version
1.40 sobrado 515: Return an
516: .Nm
517: version string.
1.37 kjell 518: .It end-kbd-macro
519: Stop defining a keyboard macro.
520: .It end-of-buffer
521: Move cursor to the end of the buffer.
522: .It end-of-line
1.40 sobrado 523: Move cursor to the end of the line.
1.37 kjell 524: .It enlarge-window
525: Enlarge the current window by shrinking either the window above
526: or below it.
527: .It eval-current-buffer
1.40 sobrado 528: Evaluate the current buffer as a series of
529: .Nm
530: commands.
1.37 kjell 531: Useful for testing
532: .Nm
533: startup files.
534: .It eval-expression
535: Get one line from the user, and run it.
536: Useful for testing expressions in
537: .Nm
538: startup files.
539: .It exchange-point-and-mark
540: Swap the values of "dot" and "mark" in the current window.
541: Return an error if no mark is set.
542: .It execute-extended-command
543: Invoke an extended command; i.e. M-x.
544: Call the message line routine to read in the command name and apply
545: autocompletion to it.
546: When it comes back, look the name up in the symbol table and run the
547: command if it is found, passing arguments as necessary.
548: Print an error if there is anything wrong.
549: .It fill-paragraph
550: Justify a paragraph, wrapping text at the current fill column.
551: .It find-file
552: Select a file for editing.
1.54 lum 553: First check if the file can be found
554: in another buffer; if it is there, just switch to that buffer.
555: If the file cannot be found, create a new buffer, read in the
1.37 kjell 556: file from disk, and switch to the new buffer.
557: .It find-file-read-only
558: Same as find-file, except the new buffer is set to read-only.
559: .It find-alternate-file
560: Replace the current file with an alternate one.
561: Semantics for finding the replacement file are the same as
1.39 jmc 562: find-file, except the current buffer is killed before the switch.
1.37 kjell 563: If the kill fails, or is aborted, revert to the original file.
564: .It find-file-other-window
565: Opens the specified file in a second buffer.
566: Splits the current window if necessary.
1.56 lum 567: .It find-tag
568: Jump to definition of tag at dot.
1.37 kjell 569: .It forward-char
570: Move cursor forwards (or backwards, if
571: .Va n
572: is negative)
573: .Va n
574: characters.
575: Returns an error if the end of buffer is reached.
576: .It forward-paragraph
577: Move forward
578: .Va n
579: paragraphs.
1.39 jmc 580: Paragraphs are delimited by <NL><NL> or <NL><TAB> or <NL><SPACE>.
1.37 kjell 581: .It forward-word
582: Move the cursor forward by the specified number of words.
583: .It global-set-key
584: Bind a key in the global (fundamental) key map.
585: .It global-unset-key
1.40 sobrado 586: Unbind a key from the global (fundamental) key map; i.e. set it to 'rescan'.
1.37 kjell 587: .It global-wd-mode
588: Toggle global working-directory mode.
589: When enabled,
590: .Nm
591: defaults to opening files (and executing commands like compile and grep)
1.39 jmc 592: relative to the global working directory.
1.37 kjell 593: When disabled, a working directory is set for each buffer.
594: .It goto-line
595: Go to a specific line.
596: If an argument is present, then
597: it is the line number, else prompt for a line number to use.
598: .It help-help
1.39 jmc 599: Prompts for one of (a)propos, (b)indings, des(c)ribe key briefly.
1.37 kjell 600: .It insert
601: Insert a string, mainly for use from macros.
602: .It insert-buffer
1.40 sobrado 603: Insert the contents of another buffer at dot.
1.37 kjell 604: .It insert-file
605: Insert a file into the current buffer at dot.
606: .It insert-with-wrap
607: Insert the bound character with word wrap.
608: Check to see if we're past the fill column, and if so,
609: justify this line.
610: .It isearch-backward
611: Use incremental searching, initially in the reverse direction.
612: isearch ignores any explicit arguments.
1.39 jmc 613: If invoked during macro definition or evaluation, the non-incremental
1.37 kjell 614: search-backward is invoked instead.
615: .It isearch-forward
616: Use incremental searching, initially in the forward direction.
617: isearch ignores any explicit arguments.
1.39 jmc 618: If invoked during macro definition or evaluation, the non-incremental
1.37 kjell 619: search-forward is invoked instead.
1.49 kjell 620: .It join-line
1.50 jmc 621: Join the current line to the previous.
622: If called with an argument,
1.49 kjell 623: join the next line to the current one.
1.37 kjell 624: .It just-one-space
625: Delete any whitespace around dot, then insert a space.
626: .It keyboard-quit
627: Abort the current action.
628: .It kill-buffer
629: Dispose of a buffer, by name.
1.43 kjell 630: If the buffer name does not start and end with an asterisk,
631: prompt the user if the buffer
1.37 kjell 632: has been changed.
633: .It kill-line
634: Kill line.
635: If called without an argument, it kills from dot to the end
636: of the line, unless it is at the end of the line, when it kills the
637: newline.
638: If called with an argument of 0, it kills from the start of the
639: line to dot.
640: If called with a positive argument, it kills from dot
641: forward over that number of newlines.
642: If called with a negative argument
643: it kills any text before dot on the current line, then it kills back
644: abs(n) lines.
645: .It kill-paragraph
646: Delete
647: .Va n
648: paragraphs starting with the current one.
649: .It kill-region
1.39 jmc 650: Kill the currently defined region.
1.37 kjell 651: .It kill-word
652: Delete forward
653: .Va n
654: words.
1.67 lum 655: .It leave-tmpdir-backups
656: Modifies the behaviour of backup-to-home-directory.
657: Backup files that would normally reside in the system
658: .Ev TMPDIR
659: are left there and not moved to the
660: .Pa ~/.mg.d
661: directory.
1.37 kjell 662: .It line-number-mode
1.71 florian 663: Toggle whether the line number is displayed in the modeline.
1.37 kjell 664: .It list-buffers
665: Display the list of available buffers.
666: .It load
667: Prompt the user for a filename, and then execute commands
668: from that file.
669: .It local-set-key
670: Bind a key mapping in the local (topmost) mode.
671: .It local-unset-key
672: Unbind a key mapping in the local (topmost) mode.
673: .It make-backup-files
674: Toggle generation of backup files.
1.72 jasper 675: .It make-directory
676: Prompt the user for a path or directory name which is then created.
1.92 ! lum 677: .It mark-paragraph
! 678: Mark n paragraphs.
1.59 lum 679: .It mark-whole-buffer
680: Marks whole buffer as a region by putting dot at the beginning and mark
681: at the end of buffer.
1.37 kjell 682: .It meta-key-mode
683: When disabled, the meta key can be used to insert extended-ascii (8-bit)
684: characters.
685: When enabled, the meta key acts as usual.
686: .It negative-argument
1.39 jmc 687: Process a negative argument for keyboard-invoked functions.
1.37 kjell 688: .It newline
689: Insert a newline into the current buffer.
690: .It newline-and-indent
691: Insert a newline, then enough tabs and spaces to duplicate the indentation
692: of the previous line.
693: Assumes tabs are every eight characters.
694: .It next-line
695: Move forward
696: .Va n
697: lines.
1.89 jmc 698: .\" .It no-tab-mode
699: .\" Toggle notab mode.
700: .\" In this mode, spaces are inserted rather than tabs.
1.37 kjell 701: .It not-modified
702: Turn off the modified flag in the current buffer.
703: .It open-line
704: Open up some blank space.
705: Essentially, insert
706: .Va n
707: newlines, then back up over them.
708: .It other-window
709: The command to make the next (down the screen) window the current
710: window.
711: There are no real errors, although the command does nothing if
712: there is only 1 window on the screen.
713: .It overwrite-mode
1.39 jmc 714: Toggle overwrite mode, where typing in a buffer overwrites
1.37 kjell 715: existing characters rather than inserting them.
716: .It prefix-region
717: Inserts a prefix string before each line of a region.
718: The prefix string is settable by using 'set-prefix-string'.
719: .It previous-line
720: Move backwards
721: .Va n
722: lines.
723: .It previous-window
724: This command makes the previous (up the screen) window the
725: current window.
726: There are no errors, although the command does not do
727: a lot if there is only 1 window.
1.56 lum 728: .It pop-tag-mark
729: Return to position where find-tag was previously invoked.
1.37 kjell 730: .It push-shell
1.40 sobrado 731: Suspend
732: .Nm
733: and switch to alternate screen, if available.
1.37 kjell 734: .It pwd
735: Display current (global) working directory in the status area.
736: .It query-replace
737: Query Replace.
738: Search and replace strings selectively, prompting after each match.
739: .It replace-string
740: Replace string globally without individual prompting.
741: .It query-replace-regexp
742: Replace strings selectively.
743: Does a search and replace operation using regular
744: expressions for both patterns.
745: .It quoted-insert
746: Insert the next character verbatim into the current buffer; i.e. ignore
747: any function bound to that key.
748: .It re-search-again
749: Perform a regular expression search again, using the same search
750: string and direction as the last search command.
751: .It re-search-backward
752: Search backwards using a regular expression.
753: Get a search string from the user, and search, starting at dot
754: and proceeding toward the front of the buffer.
1.39 jmc 755: If found, dot is left
1.37 kjell 756: pointing at the first character of the pattern [the last character that
757: was matched].
758: .It re-search-forward
759: Search forward using a regular expression.
760: Get a search string from the user and search for it starting at dot.
761: If found, move dot to just after the matched characters.
762: display does all
763: the hard stuff.
764: If not found, it just prints a message.
765: .It recenter
766: Reposition dot in the current window.
1.39 jmc 767: By default, the dot is centered.
1.37 kjell 768: If given a positive argument (n), the display is repositioned to line
769: n.
770: If
771: .Va n
1.40 sobrado 772: is negative, it is that line from the bottom.
1.37 kjell 773: .It redraw-display
774: Refresh the display.
775: Recomputes all window sizes in case something has changed.
1.69 jasper 776: .It revert-buffer
777: Revert the current buffer to the latest file on disk.
1.37 kjell 778: .It save-buffer
779: Save the contents of the current buffer if it has been changed,
780: optionally creating a backup copy.
781: .It save-buffers-kill-emacs
1.40 sobrado 782: Offer to save modified buffers and quit
783: .Nm .
1.37 kjell 784: .It save-some-buffers
785: Look through the list of buffers, offering to save any buffer that
786: has been changed.
787: Buffers that are not associated with files (such
788: as *scratch*, *grep*, *compile*) are ignored.
789: .It scroll-down
790: Scroll backwards
791: .Va n
792: pages.
793: A two-line overlap between pages is
794: assumed.
795: If given a repeat argument, scrolls back lines, not pages.
796: .It scroll-one-line-down
797: Scroll the display down
798: .Va n
799: lines without changing the cursor position.
800: .It scroll-one-line-up
801: Scroll the display
802: .Va n
1.40 sobrado 803: lines up without moving the cursor position.
1.37 kjell 804: .It scroll-other-window
805: Scroll the next window in the window list window forward
806: .Va n
807: pages.
808: .It scroll-up
809: Scroll forward one page.
810: A two-line overlap between pages is
811: assumed.
812: If given a repeat argument, scrolls back lines, not pages.
813: .It search-again
814: Search again, using the same search string and direction as the last
815: search command.
816: .It search-backward
817: Reverse search.
818: Get a search string from the user, and search, starting
819: at dot and proceeding toward the front of the buffer.
820: If found, dot is
821: left pointing at the first character of the pattern (the last character
822: that was matched).
823: .It search-forward
824: Search forward.
825: Get a search string from the user, and search for it
826: starting at dot.
827: If found, dot gets moved to just after the matched
828: characters, if not found, print a message.
829: .It self-insert-command
830: Insert a character.
831: .It set-case-fold-search
1.58 lum 832: Set case-fold searching, causing case not to matter
1.37 kjell 833: in regular expression searches.
834: This is the default.
835: .It set-default-mode
836: Append the supplied mode to the list of default modes
837: used by subsequent buffer creation.
838: Built in modes include: fill, indent, overwrite, and notab.
839: .It set-fill-column
840: Prompt the user for a fill column.
841: Used by auto-fill-mode.
842: .It set-mark-command
1.40 sobrado 843: Sets the mark in the current window to the current dot location.
1.37 kjell 844: .It set-prefix-string
845: Sets the prefix string to be used by the 'prefix-region' command.
1.76 lum 846: .It shell-command
847: Execute external command from mini-buffer.
1.59 lum 848: .It shell-command-on-region
849: Provide the text in region to the shell command as input.
1.37 kjell 850: .It shrink-window
851: Shrink current window by one line.
852: The window immediately below is expanded to pick up the slack.
853: If only one window is present, this command has no effect.
854: .It space-to-tabstop
855: Insert enough spaces to reach the next tab-stop position.
856: By default, tab-stops occur every 8 characters.
857: .It split-window-vertically
858: Split the current window.
859: A window smaller than 3 lines cannot be split.
860: .It start-kbd-macro
861: Start defining a keyboard macro.
862: Macro definition is ended by invoking end-kbd-macro.
863: .It suspend-emacs
1.40 sobrado 864: Suspend
865: .Nm
866: and switch back to alternate screen, if in use.
1.37 kjell 867: .It switch-to-buffer
868: Prompt and switch to a new buffer in the current window.
869: .It switch-to-buffer-other-window
870: Switch to buffer in another window.
871: .It toggle-read-only
872: Toggle the read-only flag on the current buffer.
873: .It transpose-chars
1.86 lum 874: Transpose the two characters in front of and under dot,
875: then move forward one character.
1.87 jmc 876: Treat newline characters the same as any other.
1.37 kjell 877: .It undo
878: Undo the most recent action.
879: If invoked again without an intervening command,
880: move the undo pointer to the previous action and undo it.
1.41 kjell 881: .It undo-boundary
882: Add an undo boundary.
883: This is not usually done interactively.
884: .It undo-boundary-toggle
885: Toggle whether undo boundaries are generated.
886: Undo boundaries are often disabled before operations that should
887: be considered atomically undoable.
888: .It undo-enable
889: Toggle whether undo information is kept.
1.37 kjell 890: .It undo-list
891: Show the undo records for the current buffer in a new buffer.
892: .It universal-argument
893: Repeat the next command 4 times.
894: Usually bound to C-u.
1.39 jmc 895: This command may be stacked; e.g.\&
1.37 kjell 896: C-u C-u C-f moves the cursor forward 16 characters.
897: .It upcase-region
898: Upper case region.
899: Change all of the lower case characters in the region to
1.40 sobrado 900: upper case.
1.37 kjell 901: .It upcase-word
902: Move the cursor forward by the specified number of words.
1.54 lum 903: As it moves, convert any characters to upper case.
1.79 lum 904: .It visible-bell
1.81 jmc 905: Toggle the visible bell.
906: If this toggle is on, the modeline will flash.
1.56 lum 907: .It visit-tags-table
908: Record name of the tags file to be used for subsequent find-tag.
1.37 kjell 909: .It what-cursor-position
910: Display a bunch of useful information about the current location of
911: dot.
912: The character under the cursor (in octal), the current line, row,
913: and column, and approximate position of the cursor in the file (as a
914: percentage) is displayed.
915: The column position assumes an infinite
916: position display; it does not truncate just because the screen does.
917: .It write-file
918: Ask for a file name and write the contents of the current buffer to
919: that file.
920: Update the remembered file name and clear the buffer
921: changed flag.
922: .It yank
923: Yank text from kill-buffer.
1.40 sobrado 924: Unlike emacs, the
925: .Nm
926: kill buffer consists only
1.37 kjell 927: of the most recent kill.
928: It is not a ring.
1.80 lum 929: .El
930: .Sh MG DIRED KEY BINDINGS
931: Specific key bindings are available in dired mode.
932: .Pp
933: .Bl -tag -width xxxxxxxxxxxx -offset indent -compact
1.85 lum 934: .It DEL
935: dired-unmark-backward
1.80 lum 936: .It SPC
937: dired-next-line
938: .It !
939: dired-shell-command
940: .It +
941: dired-create-directory
942: .It c
1.82 lum 943: dired-do-copy
1.80 lum 944: .It d and C-d
1.82 lum 945: dired-flag-file-deletion
1.80 lum 946: .It e, f and C-m
947: dired-find-file
1.84 lum 948: .It g
949: dired-revert
1.80 lum 950: .It n
951: dired-next-line
952: .It o
953: dired-find-file-other-window
954: .It p
955: dired-previous-line
1.83 lum 956: .It q
957: quit-window
1.80 lum 958: .It r
1.82 lum 959: dired-do-rename
1.80 lum 960: .It u
1.82 lum 961: dired-unmark
1.80 lum 962: .It x
1.82 lum 963: dired-do-flagged-delete
1.80 lum 964: .It C-v
965: dired-scroll-down
966: .It M-v
967: dired-scroll-up
1.78 jmc 968: .El
1.77 lum 969: .Sh MG DIRED COMMANDS
970: The following are a list of the commands specific to dired mode:
971: .Bl -tag -width Ds
972: .It dired-create-directory
973: Create a directory.
1.82 lum 974: .It dired-do-copy
975: Copy the file listed on the current line of the dired buffer.
976: .It dired-do-flagged-delete
1.77 lum 977: Delete the files that have been flagged for deletion.
1.82 lum 978: .It dired-do-rename
979: Rename the file listed on the current line of the dired buffer.
1.77 lum 980: .It dired-find-file
981: Open the file on the current line of the dired buffer.
1.78 jmc 982: If the cursor is on a directory it will be opened in dired mode.
1.82 lum 983: .It dired-flag-file-deletion
1.77 lum 984: Flag the file listed on the current line for deletion.
985: This is indicated in the buffer by putting a D at the left margin.
1.91 lum 986: No files are actually deleted until the function dired-do-flagged-delete
1.77 lum 987: is executed.
1.82 lum 988: .It dired-find-file-other-window
989: Open the file on the current line of the dired buffer in a
990: different window.
1.77 lum 991: .It dired-next-line
992: Move the cursor to the next line.
993: .It dired-other-window
994: This function works just like dired, except that it puts the
995: dired buffer in another window.
996: .It dired-previous-line
997: Move the cursor to the previous line.
1.84 lum 998: .It dired-revert
999: Refresh the dired buffer.
1.77 lum 1000: .It dired-scroll-down
1001: Scroll down the dired buffer.
1002: .It dired-scroll-up
1003: Scroll up the dired buffer.
1.82 lum 1004: .It dired-unmark
1.77 lum 1005: Remove the deletion flag for the file on the current line.
1.82 lum 1006: .It dired-unmark-backward
1.85 lum 1007: Remove the deletion flag from the file listed on the previous line
1008: of the dired buffer, then move up to that line.
1.83 lum 1009: .It quit-window
1010: Close the current dired buffer.
1.37 kjell 1011: .El
1.33 kjell 1012: .Sh CONFIGURATION FILES
1.7 aaron 1013: There are two configuration files,
1.65 jmc 1014: .Pa .mg
1.1 deraadt 1015: and
1.3 aaron 1016: .Pa .mg-TERM .
1017: Here,
1018: .Ev TERM
1.65 jmc 1019: represents the name of the terminal type; e.g. if the terminal type
1.3 aaron 1020: is set to
1021: .Dq vt100 ,
1.2 deraadt 1022: .Nm
1.1 deraadt 1023: will use
1.3 aaron 1024: .Pa .mg-vt100
1.6 aaron 1025: as a startup file.
1026: The terminal type startup file is used first.
1.33 kjell 1027: .Pp
1.28 jmc 1028: The startup file format is a list of commands, one per line, as used for
1.33 kjell 1029: interactive evaluation.
1030: Strings that are normally entered by the user at any subsequent prompts
1031: may be specified after the command name; e.g.:
1.28 jmc 1032: .Bd -literal -offset indent
1.37 kjell 1033: global-set-key ")" self-insert-command
1.46 jmc 1034: global-set-key "\e^x\e^f" find-file
1035: global-set-key "\ee[Z" backward-char
1.37 kjell 1036: set-default-mode fill
1.28 jmc 1037: set-fill-column 72
1.37 kjell 1038: auto-execute *.c c-mode
1.28 jmc 1039: .Ed
1.88 lum 1040: .Pp
1041: Comments can be added to the startup files by placing
1042: .Dq \;
1043: or
1044: .Dq #
1045: as the first character of a line.
1.3 aaron 1046: .Sh FILES
1.55 lum 1047: .Bl -tag -width /usr/share/doc/mg/tutorial -compact
1.3 aaron 1048: .It Pa ~/.mg
1049: normal startup file
1050: .It Pa ~/.mg-TERM
1051: terminal-specific startup file
1.63 lum 1052: .It Pa ~/.mg.d
1053: alternative backup file location
1.52 lum 1054: .It Pa /usr/share/doc/mg/tutorial
1.51 lum 1055: concise tutorial
1.3 aaron 1056: .El
1057: .Sh SEE ALSO
1.56 lum 1058: .Xr ctags 1 ,
1.2 deraadt 1059: .Xr vi 1
1.29 reyk 1060: .Sh CAVEATS
1.37 kjell 1061: Since it is written completely in C, there is currently no
1.54 lum 1062: language in which extensions can be written;
1063: however, keys can be rebound and certain parameters can be changed
1.38 kjell 1064: in startup files.
1.33 kjell 1065: .Pp
1066: In order to use 8-bit characters (such as German umlauts), the Meta key
1067: needs to be disabled via the
1068: .Dq meta-key-mode
1069: command.
1.75 naddy 1070: .Pp
1071: Multi-byte character sets, such as UTF-8, are not supported.
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