Support for badly nested blocks, written around the time of

the Rostock mandoc hackathon and tested and polished since,
supporting constructs like:

.Ao Bo    Ac    Bc        (exp breaking exp)
.Aq Bo    eol   Bc        (imp breaking exp)
.Ao Bq    Ac    eol       (exp breaking imp)
.Ao Bo So Bc    Ac  Sc    (double break, inner before outer)
.Ao Bo So Ac    Bc  Sc    (double break, outer before inner)
.Ao Bo    Ac So Bc  Sc    (broken breaker)
.Ao Bo So Bc Do Ac  Sc Dc (broken double breaker)

There are still two known issues which are tricky:

1) Breaking two identical explicit blocks (Ao Bo Bo Ac or Aq Bo Bo eol)
fails outright, triggering a bogus syntax error.
2) Breaking a block by two identical explicit blocks (Ao Ao Bo Ac Ac Bc
or Ao Ao Bq Ac Ac eol) still has a minor rendering error left:
"<ao1 <ao2 [bo ac2> ac1> bc]>" should not have the final ">".

We can fix these later in the tree, let's not grow this diff too large.

"get it in" kristaps@

1 files changed, 4 insertions, 1 deletions

diff --git a/libmdoc.h b/libmdoc.h
index d0a8a979..f4aba6a5 100644
--- a/libmdoc.h
+++ b/libmdoc.h
@@ -1,4 +1,4 @@
-/*	$Id: libmdoc.h,v 1.57 2010/06/27 16:18:13 kristaps Exp $ */
+/*	$Id: libmdoc.h,v 1.58 2010/06/29 19:20:38 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -109,6 +109,9 @@ int		  mdoc_block_alloc(struct mdoc *, int, int,
 int		  mdoc_head_alloc(struct mdoc *, int, int, enum mdoct);
 int		  mdoc_tail_alloc(struct mdoc *, int, int, enum mdoct);
 int		  mdoc_body_alloc(struct mdoc *, int, int, enum mdoct);
+int		  mdoc_endbody_alloc(struct mdoc *m, int line, int pos,
+			enum mdoct tok, struct mdoc_node *body,
+			enum mdoc_endbody end);
 void		  mdoc_node_delete(struct mdoc *, struct mdoc_node *);
 void		  mdoc_hash_init(void);
 enum mdoct	  mdoc_hash_find(const char *);