musl - musl - an implementation of the standard library for Linux-based systems

diff --git a/src/regex/regcomp.c b/src/regex/regcomp.c
index ccd3755b..b3dbb252 100644
--- a/src/regex/regcomp.c
+++ b/src/regex/regcomp.c

@@ -838,6 +838,9 @@ static reg_errcode_t parse_atom(tre_parse_ctx_t *ctx, const char *s)

s--;

break;

case '{':

+ case '+':

+ case '?':

+ /* extension: treat \+, \? as repetitions in BRE */

/* reject repetitions after empty expression in BRE */

if (!ere)

return REG_BADRPT;

@@ -993,7 +996,8 @@ static reg_errcode_t tre_parse(tre_parse_ctx_t *ctx)

}

if (*s=='\\' && ere)

break;

- if (*s=='\\' && s[1]!='{')

+ /* extension: treat \+, \? as repetitions in BRE */

+ if (*s=='\\' && s[1]!='+' && s[1]!='?' && s[1]!='{')

break;

if (*s=='\\')

s++;