mdocml: merge from OpenBSD mdoc_term.c rev.

mdocml: merge from OpenBSD mdoc_term.c rev.

[schwarze]

Log Message:
-----------
merge from OpenBSD mdoc_term.c rev. 1.100:
preserve blank lines in .Bd -literal,
both in the middle and at the end of the display
ok kristaps@

Modified Files:
--------------
    mdocml:
        mdoc_term.c

Revision Data
-------------
Index: mdoc_term.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/mdoc_term.c,v
retrieving revision 1.179
retrieving revision 1.180
diff -Lmdoc_term.c -Lmdoc_term.c -u -p -r1.179 -r1.180
--- mdoc_term.c
+++ mdoc_term.c
@@ -1653,9 +1653,11 @@ termp_bd_pre(DECL_ARGS)
 	p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
 
 	for (nn = n->child; nn; nn = nn->next) {
-		if (nn->prev && nn->prev->line < nn->line)
-			term_newln(p);
 		print_mdoc_node(p, pair, m, nn);
+		if (nn->next && nn->next->line == nn->line)
+			continue;
+		term_flushln(p);
+		p->flags |= TERMP_NOSPACE;
 	}
 
 	p->tabwidth = tabwidth;
--
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