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sed(1): partial fix for the case of the regex delimited with '['.

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We don't generally support the weird case of regular expresions delimited
by an opening square bracket ('[') but POSIX says that inside
bracket expressions, escaping is not possible and both '[' and '\'
represent themselves.

PR:		230198 (exp-run)
Obtained from:	OpenBSD
This commit is contained in:
Pedro F. Giffuni 2018-08-07 14:47:39 +00:00
parent 17cfcf1dc2
commit 5102499601
1 changed files with 3 additions and 3 deletions
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6
usr.bin/sed/compile.c
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@ -393,11 +393,11 @@ compile_delimited(char *p, char *d, int is_tr)
if ((d = compile_ccl(&p, d)) == NULL)
errx(1, "%lu: %s: unbalanced brackets ([])", linenum, fname);
continue;
} else if (*p == '\\' && p[1] == c) {
p++;
} else if (*p == '\\' && p[1] == '[') {
*d++ = *p++;
} else if (*p == '\\' && p[1] == c)
p++;
else if (*p == '\\' && p[1] == 'n') {
} else if (*p == '\\' && p[1] == 'n') {
*d++ = '\n';
p += 2;
continue;