diff options
Diffstat (limited to 'Src/pattern.c')
| -rw-r--r-- | Src/pattern.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Src/pattern.c b/Src/pattern.c index deb094d5f..db5344230 100644 --- a/Src/pattern.c +++ b/Src/pattern.c @@ -1103,13 +1103,19 @@ patcomppiece(int *flagp) * each time we fail on a non-empty branch, we try the empty branch, * which is equivalent to backtracking. */ - if ((flags & P_SIMPLE) && op == P_ONEHASH && + if ((flags & P_SIMPLE) && (op == P_ONEHASH || op == P_TWOHASH) && P_OP((Upat)patout+starter) == P_ANY) { /* Optimize ?# to *. Silly thing to do, since who would use * use ?# ? But it makes the later code shorter. */ Upat uptr = (Upat)patout + starter; - uptr->l = (uptr->l & ~0xff) | P_STAR; + if (op == P_TWOHASH) { + /* ?## becomes ?* */ + uptr->l = (uptr->l & ~0xff) | P_ANY; + pattail(starter, patnode(P_STAR)); + } else { + uptr->l = (uptr->l & ~0xff) | P_STAR; + } } else if ((flags & P_SIMPLE) && op && !(patglobflags & 0xff)) { /* Don't simplify if we need to look for approximations. */ patinsert(op, starter, NULL, 0); |