Bill Sommerfeld 8f7ed58a15 regex: mixed sets are misidentified as singletons ... Fix "singleton" function used by regcomp() to turn character set matches into exact character matches if a character set has exactly one element. The underlying cset representation is complex; most critically it records"small" characters (codepoint less than either 128 or 256 depending on locale) in a bit vector, and "wide" characters in a secondary array. Unfortunately the "singleton" function uses to identify singleton sets treated a cset as a singleton if either the "small" or the "wide" sets had exactly one element (it would then ignore the other set). The easiest way to demonstrate this bug: $ export LANG=C.UTF-8 $ echo 'a' | grep '[abà]' It should match (and print "a") but instead it doesn't match because the single accented character in the set is misinterpreted as a singleton. Reviewed by: kevans, yuripv Obtained from: illumos Differential Revision: https://reviews.freebsd.org/D43149		2023-12-22 12:19:59 +07:00
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Makefile	Remove $FreeBSD$: one-line sh pattern	2023-08-16 11:55:03 -06:00
Makefile.depend	Remove $FreeBSD$: one-line sh pattern	2023-08-16 11:55:03 -06:00
Makefile.inc	Remove $FreeBSD$: one-line sh pattern	2023-08-16 11:55:03 -06:00
multibyte.sh	regex: mixed sets are misidentified as singletons	2023-12-22 12:19:59 +07:00