mdocml: Merge a fix to avoid a regression in OpenBSD: Restore the blank

mdocml: Merge a fix to avoid a regression in OpenBSD: Restore the blank

[schwarze]

Log Message:
-----------
Merge a fix to avoid a regression in OpenBSD:
Restore the blank line before .In in SYNOPSIS
except right after .Sh or right after another .In.

Even though Kristaps says SYNOPSIS blank-line handling
is still very much work in progress and more is probably needed,
this one is useful to keep in sync with OpenBSD.

"fine" 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 1.141
retrieving revision 1.142
diff -Lmdoc_term.c -Lmdoc_term.c -u -p -r1.141 -r1.142
--- mdoc_term.c
+++ mdoc_term.c
@@ -1845,6 +1845,9 @@ static int
 termp_in_pre(DECL_ARGS)
 {
 
+	if (SEC_SYNOPSIS == n->sec && n->prev && MDOC_In != n->prev->tok)
+		term_vspace(p);
+
 	if (SEC_SYNOPSIS == n->sec && MDOC_LINE & n->flags) {
 		term_fontpush(p, TERMFONT_BOLD);
 		term_word(p, "#include");
--
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