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author | Rob Landley <rob@landley.net> | 2005-05-09 21:42:42 +0000 |
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committer | Rob Landley <rob@landley.net> | 2005-05-09 21:42:42 +0000 |
commit | 540d3f60f378ed26962501c33b335623fe5fb0fa (patch) | |
tree | d1d847dde8db22ab7af9a24fb018250bb51060fb /INSTALL | |
parent | b9dfb8c03febea78ab1924b4924c381ca983891c (diff) | |
download | busybox-540d3f60f378ed26962501c33b335623fe5fb0fa.tar.gz |
Patch from Shaun Jackman:
> This patch modfies expr to use portable POSIX regex rather than BSD
> regex.
...
> This updated patch implements an anchored regex by checking that the
> match starts at offset 0.
More to the point, this patch uses the same regex that sed.c is already using
(opportunity to suck in less library code), and even building a dynamically
linked busybox with just expr the result is a slightly smaller binary (by 94
bytes, I dunno what nm --size-sort has to say about it because I didn't build
with debug info, since that changes the binary size a lot by disabling
optimization...)
Your mileage may vary. Handle with caution. Do not taunt happy fun ball.
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