+
+ if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker))
+ continue;
+ if (MDOC_BODY == broken->type)
+ broken = broken->parent;
+
+ /*
+ * Found the breaker.
+ * If another, outer breaker is already pending on
+ * the *broken block, we must not clobber the link
+ * to the outer breaker, but make it pending on the
+ * new, now inner breaker.
+ * Graphically, "[A breaker=[B broken=[C->A A] tok=B] C]"
+ * becomes "[A breaker=[B->A broken=[C A] tok=B] C]"
+ * and finally "[A [B->A [C->B A] B] C]".
+ */
+ if (broken->pending) {
+ struct mdoc_node *taker;
+
+ /*
+ * If the breaker had also been broken before,
+ * it cannot take on the outer breaker itself,
+ * but must hand it on to its own breakers.
+ * Graphically, this is the following situation:
+ * "[A [B breaker=[C->B B] broken=[D->A A] tok=C] D]"
+ * "[A taker=[B->A breaker=[C->B B] [D->C A] C] D]"
+ */
+ taker = breaker;
+ while (taker->pending)
+ taker = taker->pending;
+ taker->pending = broken->pending;
+ }
+ broken->pending = breaker;
+ mandoc_vmsg(MANDOCERR_SCOPENEST, mdoc->parse, line, ppos,
+ "%s breaks %s", mdoc_macronames[tok],
+ mdoc_macronames[broken->tok]);
+ return(1);
+ }
+
+ /*
+ * Found no matching block for tok.
+ * Are you trying to close a block that is not open?
+ */
+ return(0);
+}
+
+
+static int
+rew_sub(enum mdoc_type t, struct mdoc *mdoc,
+ enum mdoct tok, int line, int ppos)
+{
+ struct mdoc_node *n;
+
+ n = mdoc->last;
+ while (n) {
+ switch (rew_dohalt(tok, t, n)) {
+ case (REWIND_NONE):
+ return(1);
+ case (REWIND_THIS):
+ n->lastline = line -
+ (MDOC_NEWLINE & mdoc->flags &&
+ ! (MDOC_EXPLICIT & mdoc_macros[tok].flags));
git.ckatri.com / mandoc.git / blobdiff