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Code Issues Projects Releases Wiki Activity

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
in Hebrew, he types: echo "srettel werbeH"
Editors
Editors (vi, ed)
This case is a bit similar to "shell input", but unlike shell,
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.
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 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
.
Need to perform filtering similar to ls.
Filename display (in error messages and elsewhere)
.
Need to perform filtering similar to ls.
TODO: write an email to Asmus Freytag (asmus@unicode.org),