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docs/unicode.txt: added more TODOs

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Denys Vlasenko 2010-02-01 22:35:30 +01:00
parent 698dca5805
commit 4875e7148b
1 changed files with 23 additions and 8 deletions
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docs/unicode.txt
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@ -26,30 +26,45 @@ But we also need to handle the following problematic moments:
* Bidirectional handling. If user wants to echo a phrase * Bidirectional handling. If user wants to echo a phrase
in Hebrew, he types: echo "srettel werbeH" in Hebrew, he types: echo "srettel werbeH"
Editors Editors (vi, ed)
This case is a bit similar to "shell input", but unlike shell, This case is a bit similar to "shell input", but unlike shell,
editors may encounder many more unexpected unicode sequences editors may encounder many more unexpected unicode sequences
(try to load a random binry file...), and they need to preserve (try to load a random binary file...), and they need to preserve
them, unlike shell which can afford to drop bogus input. them, unlike shell which can afford to drop bogus input.
more, less more, less
. Need to correctly display any input file. Ideally, with
ASCII/unicode/filtered_unicode option or keyboard switch.
Note: need to handle tabs and backspaces specially
(bksp is for manpage compat).
cut, fold, watch
May need ability to cut unicode string to specified number of wchars
and/or to specified screen width. Need to handle tabs specially.
sed, awk, grep
Handle unicode-aware regexp match
ls (multi-column display) ls (multi-column display)
. ls will fail to line up columnar output if it will not account
for character widths (and maybe filter out some of them, see
above). OTOH, non-columnar views (ls -1, ls -l, ls | car)
should NOT filter out bad unicode (but need to filter out
control chars (coreutils does that). Note that unlike more/less,
tabs and backspaces need not special handling.
top, ps top, ps
. Need to perform filtering similar to ls.
Filename display (in error messages and elsewhere) Filename display (in error messages and elsewhere)
. Need to perform filtering similar to ls.
TODO: write an email to Asmus Freytag (asmus@unicode.org), TODO: write an email to Asmus Freytag (asmus@unicode.org),