Fix for disabling Unicode Box Drawing character (CR #18159500).

This fix is not integrated into the groff git repository upstream yet,

but has been passed upstream.

--- groff-1.22.2/src/devices/grotty/tty.cpp.orig	2014-02-03 05:20:27.696842116 -0800

+++ groff-1.22.2/src/devices/grotty/tty.cpp	2014-02-03 05:26:26.723872248 -0800

@@ -275,10 +275,17 @@

 tty_printer::tty_printer() : cached_v(0)

 {

+#if 0

+  // Disable Unicode Box Drawing character because width definition

+  // of this area is ambiguous so some fonts has half width but some

+  // fonts has full width. See the following link for more details:

+  // http://unicode.org/reports/tr11/

+

   if (font::is_unicode) {

     hline_char = 0x2500;

     vline_char = 0x2502;

   }

+#endif

   schar dummy;

   // black, white

   (void)tty_color(0, 0, 0, &dummy, 0);

@@ -652,6 +659,9 @@

   }

 }

+#if 0

+// Disable Unicode Box Drawing character

+

 // The possible Unicode combinations for crossing characters.

 //

 // `  ' = 0, ` -' = 4, `- ' = 8, `--' = 12,

@@ -665,6 +675,7 @@

   0x2574, 0x2510, 0x2518, 0x2524,

   0x2500, 0x252C, 0x2534, 0x253C

 };

+#endif

 void tty_printer::end_page(int page_length)

 {

@@ -713,11 +724,15 @@

       if (nextp && p->hpos == nextp->hpos) {

 	if (p->draw_mode() == HDRAW_MODE &&

 	    nextp->draw_mode() == VDRAW_MODE) {

+

+#if 0

+          // Disable Unicode Box Drawing character

 	  if (font::is_unicode)

 	    nextp->code =

 	      crossings[((p->mode & (START_LINE|END_LINE)) >> 4)

 			+ ((nextp->mode & (START_LINE|END_LINE)) >> 6)];

 	  else

+#endif

 	    nextp->code = '+';

 	  continue;

 	}