mandoc: The groff man-ext macros define fonts CB, CI, and CR, and some

[schwarze@mandoc.bsd.lv]

Log Message:
-----------
The groff man-ext macros define fonts CB, CI, and CR, 
and some groff manual pages actually use them in .ft requests.
It's easy enough to handle these .ft requests in mandoc, too.

Modified Files:
--------------
    mandoc:
        TODO
        roff.7
        roff_term.c
        roff_validate.c

Revision Data
-------------
Index: roff_term.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/roff_term.c,v
retrieving revision 1.14
retrieving revision 1.15
diff -Lroff_term.c -Lroff_term.c -u -p -r1.14 -r1.15
--- roff_term.c
+++ roff_term.c
@@ -1,6 +1,6 @@
 /*	$Id$ */
 /*
- * Copyright (c) 2010, 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010,2014,2015,2017,2018 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -111,7 +111,12 @@ roff_term_pre_ce(ROFF_TERM_ARGS)
 static void
 roff_term_pre_ft(ROFF_TERM_ARGS)
 {
-	switch (*n->child->string) {
+	const char	*cp;
+
+	if (*(cp = n->child->string) == 'C')
+		cp++;
+
+	switch (*cp) {
 	case '4':
 	case '3':
 	case 'B':
Index: TODO
===================================================================
RCS file: /home/cvs/mandoc/mandoc/TODO,v
retrieving revision 1.259
retrieving revision 1.260
diff -LTODO -LTODO -u -p -r1.259 -r1.260
--- TODO
+++ TODO
@@ -38,9 +38,6 @@ are mere guesses, and some may be wrong.
 
 --- missing roff features ----------------------------------------------
 
-- .ft CB selects constant-width bold font
-  see groff_out(7) for examples
-
 - \*(.T prints the device being used,
   see groff_char(7) for an example
 
Index: roff_validate.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/roff_validate.c,v
retrieving revision 1.9
retrieving revision 1.10
diff -Lroff_validate.c -Lroff_validate.c -u -p -r1.9 -r1.10
--- roff_validate.c
+++ roff_validate.c
@@ -1,6 +1,6 @@
 /*	$Id$ */
 /*
- * Copyright (c) 2010, 2017 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -18,6 +18,7 @@
 
 #include <assert.h>
 #include <stddef.h>
+#include <string.h>
 
 #include "mandoc.h"
 #include "roff.h"
@@ -58,7 +59,7 @@ roff_validate(struct roff_man *man)
 static void
 roff_valid_ft(ROFF_VALID_ARGS)
 {
-	char	*cp;
+	const char		*cp;
 
 	if (n->child == NULL) {
 		man->next = ROFF_NEXT_CHILD;
@@ -84,7 +85,8 @@ roff_valid_ft(ROFF_VALID_ARGS)
 			return;
 		break;
 	case 'C':
-		if (cp[1] == 'W' && cp[2] == '\0')
+		if (cp[1] != '\0' && cp[2] == '\0' &&
+		    strchr("BIRW", cp[1]) != NULL)
 			return;
 		break;
 	default:
Index: roff.7
===================================================================
RCS file: /home/cvs/mandoc/mandoc/roff.7,v
retrieving revision 1.97
retrieving revision 1.98
diff -Lroff.7 -Lroff.7 -u -p -r1.97 -r1.98
--- roff.7
+++ roff.7
@@ -922,15 +922,15 @@ The following
 .Ar font
 arguments are supported:
 .Bl -tag -width 4n -offset indent
-.It Cm B , BI , 3 , 4
+.It Cm B , BI , CB , 3 , 4
 switches to
 .Sy bold
 font
-.It Cm I , 2
+.It Cm I , CI , 2
 switches to
 .Em underlined
 font
-.It Cm R , CW , 1
+.It Cm R , CR , CW , 1
 switches to normal font
 .It Cm P No "or no argument"
 switches back to the previous font
--
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