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98 lines
3.6 KiB
Text
98 lines
3.6 KiB
Text
-*-text-*-
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Problems, fixmes and other issues in the emacs-unicode branch
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-------------------------------------------------------------
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Notes by fx to record various things of variable importance. handa
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needs to check them -- don't take too seriously, especially with
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regard to completeness.
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_Do take seriously that you don't want this branch unless you're
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actually working on it; you risk your data by actually using it._ If
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you just want to edit Unicode and/or unify iso-8859 et al, see the
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existing support and the extra stuff at
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<URL:ftp://dlpx1.dl.ac.uk/fx/emacs/Mule>, mostly now in the CVS trunk.
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(Editing support is mostly orthogonal to the internal representation.)
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* SINGLE_BYTE_CHAR_P returns true for Latin-1 characters, which has
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undesirable effects.
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* Rationalize character syntax and its relationship to the Unicode
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database. Specifically, the latin-N.el files aren't consistent for
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common characters (and obviously have redundancies except in
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unibyte mode).
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* Fontset handling and customization needs work. We want to relate
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fonts to scripts, probably based on the Unicode blocks. The
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presence of small-repertoire 10646-encoded fonts in XFree 4 is a
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pain, not currently worked round.
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* Work is also needed on charset and coding system priorities.
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* The relevant bits of latin1-disp.el need porting (and probably
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re-naming/updating). See also cyril-util.el.
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* Quail files need more work now the encoding is irrelevant.
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* What to do with the old coding categories stuff?
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* Syntax for symbols &c in characters.el needs looking at.
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* The preferred-coding-system property of charsets should probably be
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junked unless it can be made more useful now.
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* find-coding-systems-for-charsets needs re-writing or removing.
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* find-multibyte-characters needs looking at.
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* Implement Korean cp949/UHC and any other important missing
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charsets.
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* Check up on definitions of tcvn and alternativnj.
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* Lazy-load tables for unify-charset somehow?
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* Translation tables for {en,de}code currently aren't supported.
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* Defining CCL coding systems currently doesn't work.
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* iso-2022 charsets get unified on i/o.
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* Revisit locale processing: look at treating the language and
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charset parts separately. (Language should affect things like
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speling and calendar, but that's not a Unicode issue.)
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* Handle Unicode combining characters usefully, e.g. diacritics, and
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handle more scripts specifically (<28> la Devanagari). There are
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issues with canonicalization.
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* Bidi is a separate issue with no support currently.
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* DTRT with X keysyms. We should get the right unicode for a given
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keysym, not decode raw bytes in some ill-defined coding system.
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(fx has some data on keysyms v. unicodes.)
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* We need tabular input methods, e.g. for maths symbols. (Not
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specific to Unicode.)
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* Need multibyte text in menus, e.g. for the above. (Not specific to
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Unicode.)
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* Still can't have case pairs which have different byte lengths --
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can that be fixed for Turkish, at least?
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* There's currently no support for Unicode normalization.
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* Populate char-width-table correctly for Unicode chanaracters and
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worry about what happens when double-width charsets covering
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non-CJK characters are unified.
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* Emacs 20/21 .elc files are currently not loadable. It may or may
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not be possible to do this properly.
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* Encoding issues in babyl files/rmail need sorting out.
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* Gnus still needs some attention, and we need to get changes
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accepted by Gnus maintainers...
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* You can grep the code for lots of fixmes.
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