Merge from OpenBSD right after 1.10.6; now back to full sync.

* mdoc.c: blank lines outside literal mode are more similar to .sp than .Pp
* backslashes do not terminate macros; partial revert of mdoc.c 1.164;
  the intention of that commit is fully achieved in roff.c
* mdoc_term.c: no need to list the same prototype twice
* mdoc_validate.c: drop .Pp before .sp just like .Pp before .Pp
* fix off-by-one found by jsg@ with parfait, OpenBSD term_ps.c 1.12
ok kristaps@

1 files changed, 4 insertions, 7 deletions

diff --git a/mdoc.c b/mdoc.c
index 9ec50720..75633266 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -691,11 +691,11 @@ mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
 			return(0);
 
 		/*
-		 * Insert a `Pp' in the case of a blank line.  Technically,
+		 * Insert a `sp' in the case of a blank line.  Technically,
 		 * blank lines aren't allowed, but enough manuals assume this
 		 * behaviour that we want to work around it.
 		 */
-		if ( ! mdoc_elem_alloc(m, line, offs, MDOC_Pp, NULL))
+		if ( ! mdoc_elem_alloc(m, line, offs, MDOC_sp, NULL))
 			return(0);
 
 		m->next = MDOC_NEXT_SIBLING;
@@ -758,14 +758,11 @@ mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
 
 	/* 
 	 * Copy the first word into a nil-terminated buffer.
-	 * Stop copying when a tab, space, backslash, or eoln is encountered.
+	 * Stop copying when a tab, space, or eoln is encountered.
 	 */
 
 	j = 0;
-	while (j < 4 && '\0' != buf[i] && 
-			' ' != buf[i] && 
-			'\t' != buf[i] && 
-			'\\' != buf[i])
+	while (j < 4 && '\0' != buf[i] && ' ' != buf[i] && '\t' != buf[i])
 		mac[j++] = buf[i++];
 	mac[j] = '\0';