Mercurial > vim
diff src/regexp_nfa.c @ 5893:99374096a76b v7.4.289
updated for version 7.4.289
Problem: Pattern with repeated backreference does not match with new regexp
engine. (Urtica Dioica)
Solution: Also check the end of a submatch when deciding to put a state in
the state list.
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Tue, 13 May 2014 15:56:51 +0200 |
| parents | 0ea551fa607d |
| children | b871734bf54e |
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--- a/src/regexp_nfa.c +++ b/src/regexp_nfa.c @@ -3945,6 +3945,7 @@ copy_ze_off(to, from) /* * Return TRUE if "sub1" and "sub2" have the same start positions. + * When using back-references also check the end position. */ static int sub_equal(sub1, sub2) @@ -3976,6 +3977,23 @@ sub_equal(sub1, sub2) if (s1 != -1 && sub1->list.multi[i].start.col != sub2->list.multi[i].start.col) return FALSE; + + if (nfa_has_backref) + { + if (i < sub1->in_use) + s1 = sub1->list.multi[i].end.lnum; + else + s1 = -1; + if (i < sub2->in_use) + s2 = sub2->list.multi[i].end.lnum; + else + s2 = -1; + if (s1 != s2) + return FALSE; + if (s1 != -1 && sub1->list.multi[i].end.col + != sub2->list.multi[i].end.col) + return FALSE; + } } } else @@ -3992,6 +4010,19 @@ sub_equal(sub1, sub2) sp2 = NULL; if (sp1 != sp2) return FALSE; + if (nfa_has_backref) + { + if (i < sub1->in_use) + sp1 = sub1->list.line[i].end; + else + sp1 = NULL; + if (i < sub2->in_use) + sp2 = sub2->list.line[i].end; + else + sp2 = NULL; + if (sp1 != sp2) + return FALSE; + } } }