===================================================================
RCS file: /cvs/pod2mdoc/pod2mdoc.c,v
retrieving revision 1.23
retrieving revision 1.29
diff -u -p -r1.23 -r1.29
--- pod2mdoc/pod2mdoc.c	2014/04/07 11:46:03	1.23
+++ pod2mdoc/pod2mdoc.c	2014/07/11 20:45:55	1.29
@@ -1,4 +1,4 @@
-/*	$Id: pod2mdoc.c,v 1.23 2014/04/07 11:46:03 kristaps Exp $ */
+/*	$Id: pod2mdoc.c,v 1.29 2014/07/11 20:45:55 schwarze Exp $ */
 /*
  * Copyright (c) 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -181,7 +181,6 @@ trylink(const char *buf, size_t *start, size_t end, si
 {
 	size_t		 linkstart, realend, linkend, 
 			 i, j, textsz, stack;
-	const char	*text;
 
 	/* 
 	 * Scan to the start of the terminus. 
@@ -218,7 +217,6 @@ trylink(const char *buf, size_t *start, size_t end, si
 	linkend = dsz > 1 ? realend - 1 : realend;
 
 	/* Re-scan to see if we have a title or section. */
-	text = &buf[*start];
 	for (textsz = *start; textsz < linkend; textsz++)
 		if ('|' == buf[textsz] || '/' == buf[textsz])
 			break;
@@ -460,6 +458,13 @@ formatcode(struct state *st, const char *buf, size_t *
 			(*start) += dsz;
 			break;
 		}
+		if (*start < end) {
+			assert('>' == buf[*start]);
+			(*start)++;
+		}
+		if (isspace(last))
+			while (*start < end && isspace((int)buf[*start]))
+				(*start)++;
 		return(0);
 	}
 
@@ -504,7 +509,12 @@ formatcode(struct state *st, const char *buf, size_t *
 					printf("Ar ");
 				break;
 			} 
-			printf("Sy ");
+			if (0 == strncmp(buf + *start, "NULL", 4) &&
+			    ('=' == buf[*start + 4] ||
+			     '>' == buf[*start + 4]))
+				printf("Dv ");
+			else
+				printf("Sy ");
 			break;
 		case (FMT_CODE):
 			printf("Qo Li ");
@@ -1168,24 +1178,40 @@ static void
 dofile(const struct args *args, const char *fname, 
 	const struct tm *tm, const char *buf, size_t sz)
 {
-	size_t		 sup, end, i, cur = 0;
-	struct state	 st;
-	const char	*section, *date;
 	char		 datebuf[64];
+	struct state	 st;
+	const char	*fbase, *fext, *section, *date;
 	char		*title, *cp;
+	size_t		 sup, end, i, cur = 0;
 
 	if (0 == sz)
 		return;
 
-	/* Title is last path component of the filename. */
+	/*
+	 * Parsing the filename is almost always required,
+	 * except when both the title and the section
+	 * are provided on the command line.
+	 */
 
-	if (NULL != args->title)
-		title = strdup(args->title);
-	else if (NULL != (cp = strrchr(fname, '/')))
-		title = strdup(cp + 1);
-	else
-		title = strdup(fname);
-	
+	if (NULL == args->title || NULL == args->section) {
+		fbase = strrchr(fname, '/');
+		if (NULL == fbase)
+			fbase = fname;
+		else
+			fbase++;
+		fext = strrchr(fbase, '.');
+	} else
+		fext = NULL;
+
+	/*
+	 * The title will be converted to uppercase,
+	 * so it needs to be copied.
+	 */
+
+	title = (NULL != args->title) ? strdup(args->title) :
+		(NULL != fext) ? strndup(fbase, fext - fbase) :
+		strdup(fbase);
+
 	if (NULL == title) {
 		perror(NULL);
 		exit(EXIT_FAILURE);
@@ -1193,14 +1219,9 @@ dofile(const struct args *args, const char *fname, 
 
 	/* Section is 1 unless suffix is "pm". */
 
-	if (NULL == (section = args->section)) {
-		section = "1";
-		if (NULL != (cp = strrchr(title, '.'))) {
-			*cp++ = '\0';
-			if (0 == strcmp(cp, "pm"))
-				section = PERL_SECTION;
-		}
-	} 
+	section = (NULL != args->section) ? args->section :
+	    (NULL == fext || strcmp(fext + 1, "pm")) ? "1" :
+	    PERL_SECTION;
 
 	/* Date.  Or the given "tm" if not supplied. */
 
@@ -1263,8 +1284,6 @@ readfile(const struct args *args, const char *fname)
 	time_t		 ttm;
 	struct stat 	 st;
 
-	assert(NULL != fname);
-
 	fd = 0 != strcmp("-", fname) ? 
 		open(fname, O_RDONLY, 0) : STDIN_FILENO;
 
@@ -1370,8 +1389,8 @@ main(int argc, char *argv[])
 
 	/* Accept only a single input file. */
 
-	if (argc > 2)
-		return(EXIT_FAILURE);
+	if (argc > 1)
+		goto usage;
 	else if (1 == argc)
 		fname = *argv;
 
@@ -1380,7 +1399,7 @@ main(int argc, char *argv[])
 
 usage:
 	fprintf(stderr, "usage: %s [-d date] " 
-		"[-n title] [-s section]\n", name);
+	    "[-n title] [-s section] [file]\n", name);
 
 	return(EXIT_FAILURE);
 }