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doc: mention tr issues in multi-byte locales

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* doc/autoconf.texi (tr): Mention multi-byte issues.
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Paul Eggert 2024-12-02 12:47:54 -08:00
parent 71afdbc878
commit b40645caa9
1 changed files with 8 additions and 0 deletions
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doc/autoconf.texi
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@ -19985,6 +19985,14 @@ timestamp truncation problems that @samp{cp -p} has.
@item @command{tr} @item @command{tr}
@c --------------- @c ---------------
@prindex @command{tr} @prindex @command{tr}
Many @command{tr} implementations do not support multi-byte locales
well. For example, Solaris 10 @command{tr} rejects character classes in
multi-byte locales. Also, ranges have well-defined behavior only in the
@samp{C} (or @samp{POSIX}) locale, so if you cannot guarantee the
setting of @env{LC_ALL} it is better to spell out a range
@samp{[ABCDEFGHIJKLMNOPQRSTUVWXYZ]} than to rely on @samp{[A-Z]}.
@cindex carriage return, deleting @cindex carriage return, deleting
@cindex newline, deleting @cindex newline, deleting
@cindex deleting carriage return @cindex deleting carriage return