For Xft and X font backends, set omitted max_width font fields.

* src/xfont.c (xfont_open):
* src/xftfont.c (xftfont_open): Set the font's max_width field.

* src/font.h (struct font): Update comments.

1 files changed, 10 insertions, 7 deletions

diff --git a/src/xftfont.c b/src/xftfont.c
index 2f8125393bc..34c6a8fa0b4 100644
--- a/src/xftfont.c
+++ b/src/xftfont.c
@@ -414,20 +414,25 @@ xftfont_open (FRAME_PTR f, Lisp_Object entity, int pixel_size)
         ascii_printable[ch] = ' ' + ch;
     }
   BLOCK_INPUT;
+
+  /* Unfortunately Xft doesn't provide a way to get minimum char
+     width.  So, we set min_width to space_width.  */
+
   if (spacing != FC_PROPORTIONAL
 #ifdef FC_DUAL
       && spacing != FC_DUAL
 #endif  /* FC_DUAL */
       )
     {
-      font->min_width = font->average_width = font->space_width
-        = xftfont->max_advance_width;
+      font->min_width = font->max_width = font->average_width
+        = font->space_width = xftfont->max_advance_width;
       XftTextExtents8 (display, xftfont, ascii_printable + 1, 94, &extents);
     }
   else
     {
       XftTextExtents8 (display, xftfont, ascii_printable, 1, &extents);
-      font->space_width = extents.xOff;
+      font->min_width = font->max_width = font->space_width
+        = extents.xOff;
       if (font->space_width <= 0)
         /* dirty workaround */
         font->space_width = pixel_size;
@@ -470,10 +475,6 @@ xftfont_open (FRAME_PTR f, Lisp_Object entity, int pixel_size)
 #endif  /* HAVE_LIBOTF */
   xftfont_info->ft_size = ft_face->size;
 
-  /* Unfortunately Xft doesn't provide a way to get minimum char
-     width.  So, we use space_width instead.  */
-  font->min_width = font->space_width;
-
   font->baseline_offset = 0;
   font->relative_compose = 0;
   font->default_ascent = 0;
@@ -764,6 +765,8 @@ syms_of_xftfont (void)
   DEFSYM (QCembolden, ":embolden");
   DEFSYM (QClcdfilter, ":lcdfilter");
 
+  ascii_printable[0] = 0;
+
   xftfont_driver = ftfont_driver;
   xftfont_driver.type = Qxft;
   xftfont_driver.get_cache = xfont_driver.get_cache;