diff options
Diffstat (limited to 'src/nvim/regexp_nfa.c')
| -rw-r--r-- | src/nvim/regexp_nfa.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/nvim/regexp_nfa.c b/src/nvim/regexp_nfa.c index 3b905f5efc..2536de27c1 100644 --- a/src/nvim/regexp_nfa.c +++ b/src/nvim/regexp_nfa.c @@ -2131,7 +2131,6 @@ static int nfa_regconcat(void) */ static int nfa_regbranch(void) { - int ch; int old_post_pos; old_post_pos = (int)(post_ptr - post_start); @@ -2140,10 +2139,13 @@ static int nfa_regbranch(void) if (nfa_regconcat() == FAIL) return FAIL; - ch = peekchr(); /* Try next concats */ - while (ch == Magic('&')) { + while (peekchr() == Magic('&')) { skipchr(); + // if concat is empty do emit a node + if (old_post_pos == (int)(post_ptr - post_start)) { + EMIT(NFA_EMPTY); + } EMIT(NFA_NOPEN); EMIT(NFA_PREV_ATOM_NO_WIDTH); old_post_pos = (int)(post_ptr - post_start); @@ -2153,7 +2155,6 @@ static int nfa_regbranch(void) if (old_post_pos == (int)(post_ptr - post_start)) EMIT(NFA_EMPTY); EMIT(NFA_CONCAT); - ch = peekchr(); } /* if a branch is empty, emit one node for it */ |