mdocml: Implement -Tman .Bf.

mdocml: Implement -Tman .Bf.

[schwarze]

Log Message:
-----------
Implement -Tman .Bf.
To get the spacing right,
* avoid man(7) code line breaks at places where no spacing is allowed
* allow spacing right after .Sm on
* allow spacing after empty .Fl at the end of an input line
OpenBSD rev. 1.25

Modified Files:
--------------
    mdocml:
        mdoc_man.c

Revision Data
-------------
Index: mdoc_man.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/mdoc_man.c,v
retrieving revision 1.26
retrieving revision 1.27
diff -Lmdoc_man.c -Lmdoc_man.c -u -p -r1.26 -r1.27
--- mdoc_man.c
+++ mdoc_man.c
@@ -44,6 +44,7 @@ static	int	  cond_head(DECL_ARGS);
 static  void	  font_push(char);
 static	void	  font_pop(void);
 static	void	  post_bd(DECL_ARGS);
+static	void	  post_bf(DECL_ARGS);
 static	void	  post_bk(DECL_ARGS);
 static	void	  post_dl(DECL_ARGS);
 static	void	  post_enc(DECL_ARGS);
@@ -63,6 +64,7 @@ static	void	  post_vt(DECL_ARGS);
 static	int	  pre_an(DECL_ARGS);
 static	int	  pre_ap(DECL_ARGS);
 static	int	  pre_bd(DECL_ARGS);
+static	int	  pre_bf(DECL_ARGS);
 static	int	  pre_bk(DECL_ARGS);
 static	int	  pre_br(DECL_ARGS);
 static	int	  pre_bx(DECL_ARGS);
@@ -158,7 +160,7 @@ static	const struct manact manacts[MDOC_
 	{ cond_body, pre_enc, post_enc, "<", ">" }, /* Aq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* At */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Bc */
-	{ NULL, NULL, NULL, NULL, NULL }, /* _Bf */
+	{ NULL, pre_bf, post_bf, NULL, NULL }, /* Bf */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bo */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bq */
 	{ NULL, pre_ux, NULL, "BSD/OS", NULL }, /* Bsx */
@@ -396,8 +398,7 @@ print_node(DECL_ARGS)
 	 * This makes the page structure be more consistent.
 	 */
 	prev = n->prev ? n->prev : n->parent;
-	if (prev && prev->line < n->line &&
-	    MDOC_Fo != prev->tok && MDOC_Ns != prev->tok)
+	if (MMAN_spc & outflags && prev && prev->line < n->line)
 		outflags |= MMAN_nl;
 
 	act = NULL;
@@ -644,6 +645,40 @@ post_bd(DECL_ARGS)
 }
 
 static int
+pre_bf(DECL_ARGS)
+{
+
+	switch (n->type) {
+	case (MDOC_BLOCK):
+		return(1);
+	case (MDOC_BODY):
+		break;
+	default:
+		return(0);
+	}
+	switch (n->norm->Bf.font) {
+	case (FONT_Em):
+		font_push('I');
+		break;
+	case (FONT_Sy):
+		font_push('B');
+		break;
+	default:
+		font_push('R');
+		break;
+	}
+	return(1);
+}
+
+static void
+post_bf(DECL_ARGS)
+{
+
+	if (MDOC_BODY == n->type)
+		font_pop();
+}
+
+static int
 pre_bk(DECL_ARGS)
 {
 
@@ -761,7 +796,8 @@ post_fl(DECL_ARGS)
 {
 
 	font_pop();
-	if (0 == n->nchild)
+	if (0 == n->nchild && NULL != n->next &&
+			n->next->line == n->line)
 		outflags &= ~MMAN_spc;
 }
 
@@ -1007,7 +1043,7 @@ pre_sm(DECL_ARGS)
 
 	assert(n->child && MDOC_TEXT == n->child->type);
 	if (0 == strcmp("on", n->child->string))
-		outflags |= MMAN_Sm;
+		outflags |= MMAN_Sm | MMAN_spc;
 	else
 		outflags &= ~MMAN_Sm;
 	return(0);
--
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