Bug: IBackCommit must remove dynamic captures, too

Like a fail, a IBackCommit instruction must remove any dynamic capture
made inside an 'and' pattern. (The added test for this problem
needs assertions on to detect the bug.)

1 files changed, 2 insertions, 0 deletions

diff --git a/lpvm.c b/lpvm.c
index dbe1a8e..af9e617 100644
--- a/lpvm.c
+++ b/lpvm.c
@@ -320,6 +320,8 @@ const char *match (lua_State *L, const char *o, const char *s, const char *e,
       case IBackCommit: {
         assert(stack > getstackbase(L, ptop) && (stack - 1)->s != NULL);
         s = (--stack)->s;
+        if (ndyncap > 0)  /* are there matchtime captures? */
+          ndyncap -= removedyncap(L, capture, stack->caplevel, captop);
         captop = stack->caplevel;
         p += getoffset(p);
         continue;