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author | Szabolcs Nagy <nsz@port70.net> | 2016-11-24 01:44:49 +0100 |
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committer | Rich Felker <dalias@aerifal.cx> | 2016-12-16 23:26:29 -0500 |
commit | 7a4c25d78030b3a43ed5c8dd1a456f73cb990f44 (patch) | |
tree | e4855beab38f5f84fd4b5d35f88748bdae78b454 /src/termios | |
parent | adfe682eb0d77c6afc751f5e407d9da39623c24e (diff) | |
download | musl-7a4c25d78030b3a43ed5c8dd1a456f73cb990f44.tar.gz |
handle ^ and $ in BRE subexpression start and end as anchors
In BRE, ^ is an anchor at the beginning of an expression, optionally
it may be an anchor at the beginning of a subexpression and must be
treated as a literal otherwise.
Previously musl treated ^ in subexpressions as literal, but at least
glibc and gnu sed treats it as an anchor and that's the more useful
behaviour: it can always be escaped to get back the literal meaning.
Same for $ at the end of a subexpression.
Portable BRE should not rely on this, but there are sed commands in
build scripts which do.
This changes the meaning of the BREs:
\(^a\)
\(a\|^b\)
\(a$\)
\(a$\|b\)
Diffstat (limited to 'src/termios')
0 files changed, 0 insertions, 0 deletions