3 If you are ready to start working on any of these TODO items, we
4 appreciate your help; please write to emacs-devel@gnu.org so we can be
5 aware that the problem is being addressed, and talk with you how to do
6 it best. Since Emacs is an FSF-copyrighted package, please be
7 prepared to sign legal papers to transfer the copyright on your work
10 * Small but important fixes needed in existing features:
12 ** buffer-offer-save should be a permanent local.
14 ** revert-buffer should eliminate overlays and the mark.
16 ** erase-buffer should perhaps disregard read-only properties of text.
18 ** Make occur correctly handle matches that span more than one line,
19 as well as overlapping matches.
21 ** Fix the kill/yank treatment of invisible text. At the moment,
22 invisible text is placed in the kill-ring, so that the contents of
23 the ring may not correspond to the text as displayed to the user.
24 It ought to be possible to omit text which is invisible (due to a
25 text-property, overlay, or selective display) from the kill-ring.
27 ** Change the way define-minor-mode handles autoloading.
28 It should not generate :require. Or :require in defcustom
29 should not be recorded in the user's custom-set-variables call.
31 ** The buttons at the top of a custom buffer should not omit
32 variables whose values are currently hidden.
34 ** Clean up the variables in browse-url. Perhaps use a shell command string to
35 specify the browser instead of the mushrooming set of functions.
36 See also ESR's proposal for a BROWSER environment variable
37 <URL:http://www.catb.org/~esr/BROWSER/browse-url.patch>.
39 ** Enhance scroll-bar to handle tall line (similar to line-move).
41 ** Make occur handle multi-line matches cleanly with context.
43 ** In Custom buffers, put the option that turns a mode on or off first,
44 using a heuristic of some kind?
46 ** Define recompute-arg and recompute-arg-if for fix_command to use.
47 See rms message of 11 Dec 05.
49 ** Height returned by frame-parameter ... and height given to
50 make-frame does not mean the same thing. The former includes menu and
51 tool bar lines, the latter don't. frame-parameter should return height
52 without menu and tool bar lines.
54 ** In Emacs Info, examples of using Customize should be clickable
55 and they should create Custom buffers.
57 ** The toolbar should show keyboard equivalents in its tooltips.
59 ** Modify allout.el to use overlays, like outline.el.
61 ** M-! M-n should fetch the buffer-file-name as the default.
63 ** Redesign the load-history data structure so it can cope better
64 with evaluating definitions of the same function from different files,
65 recording which file the latest definition came from.
69 ** Provide user-friendly ways to list all available font families,
70 list fonts, display a font as a sample, etc. [fx is looking at
71 multilingual font selection for the Unicode branch of Emacs.]
73 ** Rewrite the face code to be simpler, clearer and faster.
75 ** Program Enriched mode to read and save in RTF. [Is there actually a
76 decent single definition of RTF? Maybe see info at
77 http://latex2rtf.sourceforge.net/.] This task seems to be addressed
78 by http://savannah.nongnu.org/projects/emacs-rtf/, which is still in
81 ** Implement something better than the current Refill mode. This
82 probably needs some primitive support.
84 ** Add a command to make a "Local Variables" section in the current buffer
85 and/or add a variable to the list.
87 ** Implement primitive and higher-level functions to allow filling
88 properly with variable-pitch faces.
90 ** Implement a smoother vertical scroll facility, one that allows
91 C-v to scroll through a tall image. The primitive operations
92 posn-at-point and posn-at-x-y should now make it doable in elisp.
94 ** Implement intelligent search/replace, going beyond query-replace
95 (see http://graphics.csail.mit.edu/~rcm/chi04.pdf).
97 ** Implement other text formatting properties.
98 *** Footnotes that can appear either in place or at the end of the page.
99 *** text property that says "don't break line in middle of this".
100 Don't break the line between two characters that have the
101 same value of this property.
102 *** Discretionary hyphens that are not visible when they are at end of line.
104 ** Internationalize Emacs's messages.
106 ** Install mmc@maruska.dyndns.org's no-flicker change.
108 ** Add a "current vertical pixel level" value that goes with point,
109 so that motion commands can also move through tall images.
110 This value would be to point as window-vscroll is to window-start.
112 ** Address internationalization of symbols names essentially
113 as documentation, e.g. in command names and Custom.
115 ** Make the Lucid menu widget display multilingual text. [This
116 probably needs to be done from actual Emacs buffers, either directly
117 in the menu or by rendering in an unmapped window and copying the
118 pixels. The current code assumes a specific locale; that isn't good
119 enough even if X can render the arbitrary text] [The gtk
120 port now displays multilingual text in menus, but only insofar as
121 Emacs can encode it as utf-8 and gtk can display the result.]
122 Maybe making Lucid menus work like Gtk's (i.e. just force utf-8) is good
123 enough now that Emacs can encode most chars into utf-8.
125 ** Remove the limitation that window and frame widths and heights can
126 be only full columns/lines.
128 * Other features we would like:
130 ** Create a category of errors called `user-error' for errors which are
131 typically due to pilot errors and should thus be in debug-ignored-errors.
133 ** Give Tar mode all the features of Archive mode.
135 ** Create a category of errors called `process-error'
136 for some or all errors associated with using subprocesses.
138 ** Maybe reinterpret `parse-error' as a category of errors
139 and put some other errors under it.
141 ** A function to tell you the argument pattern of functions.
142 See `function-arity' in http://www.loveshack.ukfsn.org/emacs/fx-misc.el.
144 ** Make byte-compile warn when a doc string is too wide.
146 ** A function to check for customizable options that have been
147 set but not saved, and ask the user whether to save them.
148 This could go in kill-emacs-query-functions, to remind people
149 to save their changes. If the user says yes, show them
150 in a Custom buffer using customize-customized.
152 ** Emacs Lisp mode could put an overlay on the defun for every
153 function that has advice. The overlay could have `after-text' like "
154 [Function has advice]". It might look like
155 (defun foo [Function has advice] (x y)
156 The overlay could also be a button that you could use to view the advice.
160 This is hard to make work because sftp doesn't print status
163 *** Use MLS for ange-ftp-insert-directory if a list of files is specified.
165 ** Ability to map a key, including all modified-combinations.
166 E.g map mouse-4 to wheel-up as well as M-mouse-4 -> M-wheel-up
167 M-C-mouse-4 -> M-C-wheel-up, H-S-C-M-s-double-mouse-4 ->
168 H-S-C-M-s-double-wheel-up, ...
170 ** Beefed-up syntax-tables.
171 *** recognize multi-character syntactic entities like `begin' and `end'.
172 *** nested string-delimiters (for Postscript's (foo(bar)baz) strings).
173 *** support for infix operators (with precedence).
174 *** support for the $ (paired delimiter) in parse-partial-sexp.
175 *** support for hook-chars whose effect on the parsing-state is specified
176 by elisp code. Thus a char could both close a string and open a comment
177 at the same time and do it in a context-sensitive way.
178 *** ability to add mode-specific data to the partial-parse-state.
180 ** Add a way to convert a keyboard macro to equivalent Lisp code.
182 ** Have a command suggestion help system that recognizes patterns
183 of commands which could be replaced with a simpler common command.
184 It should not make more than one suggestion per 10 minutes.
186 ** Add a way to define input methods by computing them (when first used)
187 from other input methods. Then redefine C-x 8 to use a
188 user-selected input method, with the default being the union of
189 latin-1-prefix and latin-1-postfix.
191 ** Implement a clean way to use different major modes for
192 different parts of a buffer. This could be useful in editing
193 Bison input files, for instance, or other kinds of text
194 where one language is embedded in another language. See
195 http://www.loveshack.ukfsn.org/emacs/multi-mode.el and also
196 mmm-mode, as reference for approaches took by others.
198 ** Arrange a way for an input method to return the first character
199 immediately, then replace it later. So that C-s a with
200 input method latin-1-postfix would immediately search for an a.
202 ** Give start-process the ability to direct standard-error
203 output to a different filter.
205 ** Make desktop.el save the "frame configuration" of Emacs (in some
208 ** Give desktop.el a feature to switch between different named
211 ** Replace finder.el with something that generates an Info file
212 which gives the same information through a menu structure. [Dave
213 Love started on this.]
215 ** Add a cpio mode, more or less like tar mode.
217 ** Implement a variant of uncompress.el or jka-compr.el that works with
218 GNU Privacy Guard for encryption. [Code exists but isn't assigned.
219 See the Gnus development sources for assigned code concerning GPG
220 use with mail, which is probably a good start.] See also
221 http://www.loveshack.ukfsn.org/emacs/auto-crypt.tgz.
223 ** Save undo information in special temporary files, and reload it
224 when needed for undoing. This could extend undo capacity.
226 ** Change the Windows NT menu code
227 so that it handles the deep_p argument and avoids
228 regenerating the whole menu bar menu tree except
229 when the user tries to use the menubar.
231 This requires the RIT to forward the WM_INITMENU message to
232 the main thread, and not return from that message until the main
233 thread has processed the MENU_BAR_ACTIVATE_EVENT and regenerated
234 the whole menu bar. In the mean time, it should process other messages.
236 ** Get some major packages installed: W3 (development version needs
237 significant work), PSGML. Check the assignments file for other
238 packages which might go in and have been missed.
240 ** Make keymaps a first-class Lisp object (this means a rewrite of
241 keymap.c). What should it do apart from being opaque ?
242 multiple inheritance ? faster where-is ? no more fix_submap_inheritance ?
245 ** Provide real menus on ttys. The MS-DOS implementation can serve as
246 an example how to do part of this.
248 ** Implement popular parts of the rest of the CL functions as compiler
251 ** Make compiler warnings about functions that might be undefined at run time
252 smarter, so that they know which files are required by the file being
253 compiled and don't warn about functions defined in them.
255 ** Highlight rectangles (`mouse-track-rectangle-p' in XEmacs). Already in CUA,
256 but it's a valuable feature worth making more general.
258 ** Support simultaneous tty and X frames. [See the multi-tty branch of Emacs
259 at http://lorentey.hu/project/emacs.]
261 ** Provide MIME support for Rmail using the Gnus MIME library. [Maybe
262 not now feasible, given Gnus maintenance decisions. fx looked at
263 this and can say where some of the problems are.]
265 ** Eliminate the storm of warnings concerning char/unsigned char
266 mismatches that we get with GCC 4.x and proprietary compilers on
267 various systems. They make it difficult to spot the important
270 ** Fix anything necessary to use `long long' EMACS_INTs with GCC.
272 ** Split out parts of lisp.h and generate Makefile dependencies
277 ** Allow auto-compression-mode to use zlib calls if zlib is available.
278 [It's required for PNG, so may be linked anyhow.]
280 ** Add a --pristine startup flag which does -q --no-site-file plus
281 ignoring X resources (Doze equivalents?) and most of the
282 environment. What should not be ignored needs consideration.
284 ** Improve the GC (generational, incremental). (We may be able to use
285 the Boehm collector.) [See the Boehm-GC branch in CVS for work on
288 ** Check what hooks would help Emacspeak -- see the defadvising in W3.
290 ** Add horizontal scroll bars.
292 ** Provide an optional feature which computes a scroll bar slider's
293 size and its position from lines instead of characters.
295 ** Add support for SVG (Scalable Vector Graphics) rendering to
298 ** Allow unknown image types to be rendered via an external program
299 converting them to, say, PBM (in the same way as PostScript?).
301 ** Allow displaying an X window from an external program in a buffer,
302 e.g. to render graphics from Java applets. [gerd and/or wmperry
303 thought this was feasible.]
305 ** Allow images (not just text) in the margin to be mouse-sensitive.
306 (Requires recursing through display properties). Provide some way
307 to simulate mouse-clicks on marginal text without a mouse.
309 ** Implement Lisp functions to determine properly whether a character
310 is displayable (particularly needed in XFree 4, sigh). Use it to
311 define useful glyphs that may be displayed as images or unicodes
312 (with ASCIIfied fallback via latin1-disp). Examples include
313 box-drawing graphics in Custom buffers, W3 rules and tables, and
314 tree displays generally, mode-line mail indicator. [See work done
315 already for Emacs 22 and consult fx.]
317 ** Do something to make rms happy with fx's dynamic loading, and use it
318 to implement things like auto-loaded buffer parsers and database
319 access in cases which need more than Lisp.
321 ** Extend ps-print to deal with multiple font sizes, images, and extra
324 ** Provide portable undumping using mmap (per gerd design).
326 ** Make byte-compile avoid binding an expanded defsubst's args
327 when the body only calls primitives.
329 ** Use the XIE X extension, if available, for image display.
331 ** Make monochrome images display using the foreground and background
332 colors of the applicable faces.
336 ** Optionally make the cursor a little thinner at the end of a line
337 or the end of the buffer.
339 ** Add support for rendering antialiased text, probably using
342 ** Port the conservative stack marking code of Emacs' garbage collector
343 to more systems, so that we can completely get rid of GCPROs. Note
344 that Boehm garbage collector provides this.
346 ** Reorder defcustom's in each package so that the more important
347 options come first in the Customize buffers. This could be done by
348 either rearranging the file (since options are shown in the order
349 they appear in the *.el files), or by adding a few :set-after
352 ** Maybe document the features of libraries missing from the manual (or
353 ancillary manuals, including the Lisp manual in some cases).
354 This is not worth doing for all of these packages and we need not
355 aim for completeness, but some may be worth documenting.
357 Here's a list which is probably not complete/correct: align, allout,
358 artist, ansi-color, array, battery, calculator, cdl, cmuscheme,
359 completion, cua, delim-col, dirtrack, double, echistory, elide-head,
360 easymenu, expand, flow-ctrl, format [format-alist],
361 generic/generic-x [various modes], kermit, log-edit, ledit
362 [obsolete?], makesum, midnight [other than in Kill Buffer node],
363 mouse-copy [?], mouse-drag, mouse-sel, net-utils, rcompile,
364 snmp-mode [?], soundex [should be interactive?], strokes [start from
365 the web page], talk, thingatpt [interactive functions?], type-break,
366 vcursor, xscheme, zone-mode [?], mlconvert [?], iso-cvt, iso-swed,
367 swedish, feedmail [?], uce, bruce, gametree, meese, page-ext,
368 refbib, refer, scribe, sgml-mode, spell, texinfo, underline,
369 cmacexp, hideif, mantemp [obsolete?], pcomplete, assoc, xml,
370 cvs-status (should be described in PCL-CVS manual); other progmodes,
371 probably in separate manual.
373 ** Convert the XPM bitmaps to PPM, replace the PBMs with them and scrap
374 the XPMs so that the colour versions work generally. (Requires care
375 with the colour used for the transparent regions.)
377 ** Convenient access to the `values' variable. It would be nice to have an
378 interface that would show you the printed reps of the elements of the
379 list in a menu, let you select one of the values, and put it into some
380 other variable, without changing the value of `values'.
382 ** (Controlled by a flag) make open and close syntax match exactly,
383 i.e. `(' doesn't match `]'.
385 ** Specify parameter ID-FORMAT in all calls to `file-attributes' and
386 `directory-files-and-attributes' where attributes UID or GID are used.
387 Whenever possible, use value 'string.
388 When done, change meaning of default value from 'integer to 'string.
389 If value 'integer is used nowhere, remove the parameter ID-FORMAT from
390 the definition of `file-attributes' and `directory-files-and-attributes'
393 ** Make language-info-alist customizable. Currently a user can customize
394 only the variable `current-language-environment'.
396 ** Improve language environment handling so that Emacs can fit
397 better to a users locale. Currently Emacs uses utf-8 language
398 environment for all utf-8 locales, thus a user in ja_JP.UTF-8 locale
399 are also put in utf-8 lang. env. In such a case, it is
400 better to use Japanese lang. env. but prefer utf-8 coding system.
402 ** Enhance locale handling: handle language, territory and charset
403 orthogonally and de-emphasize language environments. Use the locale
404 to set up more things, such as fontsets, the default Ispell
405 dictionary, diary format, calendar holidays and display, quoting
406 characters and phrase boundaries, sentence endings, collation for
407 sorting (at least for unicodes), HTTP Accept-language, patterns for
408 directory listings and compilation messages, yes-or-no replies,
409 common menu items when the toolkit supports it ... `locale-info'
410 needs extending for LC_COLLATE &c. [fx started on this.]
412 ** Eliminate the current restriction on header printing by ps-print.
413 Currently, a header can contain only single 1-byte charset in
416 ** In ps-print, provide an user friendly interface to specify fonts.
418 ** OpenType font support for various complex scripts (e.g. Devanagari).
419 As X protocal doesn't provide a way to access OpenType Layout Tables
420 in a OpenType font of a server side, we need a way to utilize local
421 fonts (perhaps by directly using the Freetype library or indirectly
424 ** Enhance word boundary detection for such a script that doesn't use
425 space at word boundary (e.g. Thai).
427 ** Implement interface programs with major Japanese conversion server
428 in lib-src so that they can be used from the input method
429 "japanese". Currently, most Japanese users are using external
430 packages (e.g. tamago, anthy) or an input method via XIM.
432 ** Let LEIM handle the Mode_switch key like XIM does (i.e. a toggle like C-\
433 but which can also be used as a modifier).
435 ** Provide the toolbar on ttys. This could map a bit like tmm-menubar
436 for the menubar and buttons could look a bit like those used by customize.
438 ** Improve Help buffers: Change the face of previously visited links (like
439 Info, but also with regard to namespace), add a forward button to make the
440 Help buffer more browser like and gives the value of lisp expressions
441 e.g auto-mode-alist, the right face. [nickrob@snap.net.nz has a patch
442 for this for inclusion after 22.1].
444 ** Possibly make `list-holidays' eval items in the calendar-holidays variable.
446 <http://lists.gnu.org/archive/html/emacs-devel/2006-02/msg01034.html>.
447 [rgm@gnu.org will look at this after 22.1]
451 ** Replace gmalloc.c with the modified Doug Lea code from the current
452 GNU libc so that the special mmapping of buffers can be removed --
453 that apparently loses under Solaris, at least. [fx has mostly done
456 ** Rewrite make-docfile to be clean and maintainable.
458 ** Add an inferior-comint-minor-mode to capture the common set of operations
459 offered by major modes that offer an associated inferior
460 comint-derived mode. I.e. basically make cmuscheme.el/inf-lisp.el generic.
461 For use by sml-mode, python-mode, tex-mode, scheme-mode, lisp-mode,
462 haskell-mode, tuareg-mode, ...
464 ** Make SYNC_INPUT the default.
465 All loops using immediate_quit need to be checked to ensure that
466 C-g can interrupt them, in case of an infinite loop. Once we
467 switch to using SYNC_INPUT, we can remove the BLOCK_INPUTs in the
468 allocation functions (allocate_string etc.) without worrying about
473 ** a two-char comment-starter whose two chars are symbol constituents will
474 not be noticed if it appears within a word.
476 ** Fix unexelf.c to handle the .data.rel and .data.rel.local
477 sections made by GCC 3.4 on IRIX.
479 ;;; arch-tag: b0a3e40b-726a-457d-9999-ba848321b036