Handle nested, recursive mathematical subexpressions. This is

definitely not general, but it's good enough for pod2man definitions
(after I clean up the roff, which will be addressed in later fixes).

1 files changed, 25 insertions, 2 deletions

diff --git a/mandoc.c b/mandoc.c
index 78b2967d..b8d07d07 100644
--- a/mandoc.c
+++ b/mandoc.c
@@ -1,4 +1,4 @@
-/*	$Id: mandoc.c,v 1.32 2010/08/24 13:39:37 kristaps Exp $ */
+/*	$Id: mandoc.c,v 1.33 2010/08/24 13:56:51 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -128,6 +128,27 @@ mandoc_special(char *p)
 			p++;
 		} 
 		
+		/* Handle embedded numerical subexp or escape. */
+
+		if ('(' == *p) {
+			while (*p && ')' != *p)
+				if ('\\' == *p++) {
+					i = mandoc_special(--p);
+					if (0 == i)
+						return(0);
+					p += i;
+				}
+
+			if (')' == *p++)
+				break;
+
+			return(0);
+		} else if ('\\' == *p) {
+			if (0 == (i = mandoc_special(p)))
+				return(0);
+			p += i;
+		}
+
 		break;
 #if 0
 	case ('Y'):
@@ -172,7 +193,9 @@ mandoc_special(char *p)
 	case ('z'):
 		len = 1;
 		if ('\\' == *p) {
-			p += mandoc_special(p);
+			if (0 == (i = mandoc_special(p)))
+				return(0);
+			p += i;
 			return(*p ? (int)(p - sv) : 0);
 		}
 		break;