busybox/editors
Dominique Martinet 4fe954c148 sed: do not ignore 'g' modifier when match starts with ^
It is perfectly valid to start a regex with ^ and have other patterns
with \| that can match more than once, e.g. the following example
should print ca, as illustrated with gnu sed:
$ echo 'abca' | sed -e 's/^a\|b//g'
ca

busybox before patch:
$ echo 'abca' | busybox sed -e 's/^a\|b//g'
bca

busybox after patch:
$ echo 'abca' | ./busybox sed -e 's/^a\|b//g'
ca

regcomp handles ^ perfectly well as illustrated with the second 'a' that
did not match in the example, we ca leave the non-repeating to it if
appropriate.
The check had been added before using regcomp and was required at the
time (f36635cec6) but no longer makes sense now.

(tested with glibc and musl libc)

function                                             old     new   delta
add_cmd                                             1189    1176     -13

Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-12-25 04:20:28 +01:00
..
awk.c awk: never return NULL from awk_printf() 2021-09-09 19:26:39 +02:00
cmp.c cmp: code shrink 2021-12-17 22:43:45 +01:00
Config.src restore documentation on the build config language 2018-06-06 15:16:48 +02:00
diff.c diff: code shrink 2021-02-22 19:00:07 +01:00
ed.c ed: align output of read command with POSIX.1-2008 2021-12-19 23:17:52 +01:00
Kbuild.src
patch_bbox.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
patch_toybox.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
patch.c help text: replace [OPTIONS] with actual options (if not too long) 2020-12-13 22:34:05 +01:00
sed1line.txt
sed_summary.htm
sed.c sed: do not ignore 'g' modifier when match starts with ^ 2021-12-25 04:20:28 +01:00
vi.c vi: further changes to colon addresses 2021-08-29 20:07:20 +02:00