mandoc: Two consecutive .SY blocks only get a blank line in between if

[schwarze@mandoc.bsd.lv]

Log Message:
-----------
Two consecutive .SY blocks only get a blank line in between
if the first one is explicitly closed with .YS.

Modified Files:
--------------
    mandoc:
        man_macro.c
        man_term.c

Revision Data
-------------
Index: man_term.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/man_term.c,v
retrieving revision 1.216
retrieving revision 1.217
diff -Lman_term.c -Lman_term.c -u -p -r1.216 -r1.217
--- man_term.c
+++ man_term.c
@@ -861,7 +861,8 @@ pre_SY(DECL_ARGS)
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
-		print_bvspace(p, n, mt->pardist);
+		if (n->prev == NULL || n->prev->tok != MAN_SY)
+			print_bvspace(p, n, mt->pardist);
 		return 1;
 	case ROFFT_HEAD:
 	case ROFFT_BODY:
Index: man_macro.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/man_macro.c,v
retrieving revision 1.128
retrieving revision 1.129
diff -Lman_macro.c -Lman_macro.c -u -p -r1.128 -r1.129
--- man_macro.c
+++ man_macro.c
@@ -71,7 +71,7 @@ static const struct man_macro man_macros
 	{ in_line_eoln, MAN_NSCOPED }, /* PD */
 	{ in_line_eoln, 0 }, /* AT */
 	{ in_line_eoln, MAN_NSCOPED }, /* in */
-	{ blk_exp, MAN_BSCOPE }, /* SY */
+	{ blk_imp, MAN_BSCOPE }, /* SY */
 	{ blk_close, MAN_BSCOPE }, /* YS */
 	{ in_line_eoln, 0 }, /* OP */
 	{ in_line_eoln, MAN_BSCOPE }, /* EX */
@@ -269,6 +269,13 @@ blk_close(MACRO_PROT_ARGS)
 	if (ctok == MAN_LP || ctok == MAN_PP || ctok == MAN_P) {
 		*pos = strlen(buf);
 		blk_imp(man, ctok, cline, cpos, pos, buf);
+	}
+
+	/* Synopsis blocks need an explicit end marker for spacing. */
+
+	if (tok == MAN_YS && man->last == nn) {
+		roff_elem_alloc(man, line, ppos, tok);
+		man_unscope(man, man->last);
 	}
 }
 
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