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| author | Bruno Haible <bruno@clisp.org> | 2023-03-03 14:32:13 +0100 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2023-04-17 09:02:07 -0700 |
| commit | e704a13c9644f4f4b9a9dd4e215ee7a1707f5850 (patch) | |
| tree | ed0fab9139608d97534f025de86f275f32df4647 | |
| parent | 0cc3c4ca8e6c550bf590ae45a916982b6ec50203 (diff) | |
| download | autoconf-e704a13c9644f4f4b9a9dd4e215ee7a1707f5850.tar.gz | |
Document limitation of BusyBox tr.
BusyBox 1.35.0 tr, which is shipped with Alpine Linux 3.17, does not support
the POSIX [x*n] syntax.
* doc/autoconf.texi (Limitations of Usual Tools): Document limitation of 'tr'
from BusyBox.
| -rw-r--r-- | doc/autoconf.texi | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/autoconf.texi b/doc/autoconf.texi index 5d5f613e..b3c708e8 100644 --- a/doc/autoconf.texi +++ b/doc/autoconf.texi @@ -20368,6 +20368,20 @@ $ @kbd{echo abc | coreutils/tr bc d} add @end example +On platforms with the BusyBox tools, @command{tr} does not support the +@code{[@var{x}*@var{n}]} option syntax. + +@example +$ @kbd{echo abc | tr 'abcd' '[A*4]'} +[A* +$ @kbd{echo abc | coreutils/tr 'abcd' '[A*4]'} +AAA +$ @kbd{echo xyz | tr 'a-z' '[A*]'} +]]] +$ @kbd{echo xyz | coreutils/tr 'a-z' '[A*]'} +AAA +@end example + Posix requires @command{tr} to operate on binary files. But at least Solaris @command{/usr/ucb/tr} and @command{/usr/bin/tr} silently discard @code{NUL} in the input prior to doing any translation. When using |