===================================================================
RCS file: /cvs/mandoc/tag.c,v
retrieving revision 1.22
retrieving revision 1.25
diff -u -p -r1.22 -r1.25
--- mandoc/tag.c	2019/07/10 19:39:01	1.22
+++ mandoc/tag.c	2019/07/27 13:40:57	1.25
@@ -1,4 +1,4 @@
-/*	$Id: tag.c,v 1.22 2019/07/10 19:39:01 schwarze Exp $ */
+/*	$Id: tag.c,v 1.25 2019/07/27 13:40:57 schwarze Exp $ */
 /*
  * Copyright (c) 2015, 2016, 2018, 2019 Ingo Schwarze <schwarze@openbsd.org>
  *
@@ -53,7 +53,7 @@ static struct tag_files	 tag_files;
  * but for simplicity, create it anyway.
  */
 struct tag_files *
-tag_init(void)
+tag_init(char *tagname)
 {
 	struct sigaction	 sa;
 	int			 ofd;
@@ -61,6 +61,7 @@ tag_init(void)
 	ofd = -1;
 	tag_files.tfd = -1;
 	tag_files.tcpgid = -1;
+	tag_files.tagname = tagname;
 
 	/* Clean up when dying from a signal. */
 
@@ -129,6 +130,7 @@ fail:
 	*tag_files.tfn = '\0';
 	tag_files.ofd = -1;
 	tag_files.tfd = -1;
+	tag_files.tagname = NULL;
 	return NULL;
 }
 
@@ -151,11 +153,11 @@ tag_put(const char *s, int prio, size_t line)
 		s += 2;
 
 	/*
-	 * Skip whitespace and whatever follows it,
+	 * Skip whitespace and escapes and whatever follows,
 	 * and if there is any, downgrade the priority.
 	 */
 
-	len = strcspn(s, " \t");
+	len = strcspn(s, " \t\\");
 	if (len == 0)
 		return;
 
@@ -225,6 +227,7 @@ tag_write(void)
 	struct tag_entry	*entry;
 	size_t			 i;
 	unsigned int		 slot;
+	int			 empty;
 
 	if (tag_files.tfd <= 0)
 		return;
@@ -235,12 +238,16 @@ tag_write(void)
 	}
 	if ((stream = fdopen(tag_files.tfd, "w")) == NULL)
 		mandoc_msg(MANDOCERR_FDOPEN, 0, 0, "%s", strerror(errno));
+	empty = 1;
 	entry = ohash_first(&tag_data, &slot);
 	while (entry != NULL) {
-		if (stream != NULL && entry->prio >= 0)
-			for (i = 0; i < entry->nlines; i++)
+		if (stream != NULL && entry->prio >= 0) {
+			for (i = 0; i < entry->nlines; i++) {
 				fprintf(stream, "%s %s %zu\n",
 				    entry->s, tag_files.ofn, entry->lines[i]);
+				empty = 0;
+			}
+		}
 		free(entry->lines);
 		free(entry);
 		entry = ohash_next(&tag_data, &slot);
@@ -251,6 +258,10 @@ tag_write(void)
 	else
 		close(tag_files.tfd);
 	tag_files.tfd = -1;
+	if (empty) {
+		unlink(tag_files.tfn);
+		*tag_files.tfn = '\0';
+	}
 }
 
 void