[Emacs-diffs] emacs/src fontset.c

[Kenichi Handa]

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Kenichi Handa <handa>   09/07/08 03:49:12

Modified files:
        src            : fontset.c 

Log message:
        (fontset_find_font): Fix the logic of handling
        charset_matched.
        (font_for_char): Delete unused var.
        (generate_ascii_font_name): Delete it.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/emacs/src/fontset.c?cvsroot=emacs&r1=1.176&r2=1.177

Patches:
Index: fontset.c
===================================================================
RCS file: /cvsroot/emacs/emacs/src/fontset.c,v
retrieving revision 1.176
retrieving revision 1.177
diff -u -b -r1.176 -r1.177
--- fontset.c   25 Jun 2009 08:02:19 -0000      1.176
+++ fontset.c   8 Jul 2009 03:49:12 -0000       1.177
@@ -531,7 +531,7 @@
      int id, fallback;
 {
   Lisp_Object vec, font_group;
-  int i, charset_matched = -1, found_index;
+  int i, charset_matched = 0, found_index;
   FRAME_PTR f = (FRAMEP (FONTSET_FRAME (fontset)))
     ? XFRAME (selected_frame) : XFRAME (FONTSET_FRAME (fontset));
   Lisp_Object rfont_def;
@@ -575,25 +575,46 @@
       Lisp_Object font_def;
       Lisp_Object font_entity, font_object;
 
-      if (i == 0 && charset_matched >= 0)
+      if (i == 0)
        {
          /* Try the element matching with the charset ID at first.  */
-         rfont_def = AREF (vec, charset_matched);
          found_index = charset_matched;
-         charset_matched = -1;
+         if (charset_matched > 0)
+           {
+             charset_matched = - charset_matched;
          i--;
        }
-      else if (i != charset_matched)
+       }
+      else if (i != - charset_matched)
        {
-         rfont_def = AREF (vec, i);
          found_index = i;
        }
       else
+       {
+         /* We have already tried this element and the followings
+            that have the same font specifications.  So, skip them
+            all.  */
+         rfont_def = AREF (vec, i);
+         font_def = RFONT_DEF_FONT_DEF (rfont_def);
+         for (; i + 1 < ASIZE (vec); i++)
+           {
+             rfont_def = AREF (vec, i + 1);
+             if (NILP (rfont_def))
+               break;
+             if (! EQ (RFONT_DEF_FONT_DEF (rfont_def), font_def))
+               break;
+           }
        continue;
+       }
 
+      rfont_def = AREF (vec, found_index);
       if (NILP (rfont_def))
+       {
+         if (charset_matched < 0)
+           continue;
        /* This is a sign of not to try the other fonts.  */
        return Qt;
+       }
       if (INTEGERP (RFONT_DEF_FACE (rfont_def))
          && XINT (RFONT_DEF_FACE (rfont_def)) < 0)
        /* We couldn't open this font last time.  */
@@ -640,17 +661,20 @@
       /* Find a font already opened, maching with the current spec,
         and supporting C. */
       font_def = RFONT_DEF_FONT_DEF (rfont_def);
-      for (i++; i < ASIZE (vec); i++)
+      for (; found_index + 1 < ASIZE (vec); found_index++)
        {
-         rfont_def = AREF (vec, i);
+         rfont_def = AREF (vec, found_index + 1);
          if (NILP (rfont_def))
-           return Qt;
+           break;
          if (! EQ (RFONT_DEF_FONT_DEF (rfont_def), font_def))
            break;
-         font_object = RFONT_DEF_OBJECT (AREF (vec, i));
+         font_object = RFONT_DEF_OBJECT (rfont_def);
          if (! NILP (font_object) && font_has_char (f, font_object, c))
+           {
+             found_index++;
            goto found;
        }
+       }
 
       /* Find a font-entity with the current spec and supporting C.  */
       font_entity = font_find_for_lface (f, face->lface,
@@ -666,24 +690,22 @@
                                             Qnil);
          if (NILP (font_object))
            continue;
-         found_index = i;
          RFONT_DEF_NEW (rfont_def, font_def);
          RFONT_DEF_SET_OBJECT (rfont_def, font_object);
          RFONT_DEF_SET_SCORE (rfont_def, RFONT_DEF_SCORE (rfont_def));
          new_vec = Fmake_vector (make_number (ASIZE (vec) + 1), Qnil);
-         for (j = 0; j < i; j++)
+         found_index++;
+         for (j = 0; j < found_index; j++)
            ASET (new_vec, j, AREF (vec, j));
          ASET (new_vec, j, rfont_def);
-         found_index = j;
          for (j++; j < ASIZE (new_vec); j++)
            ASET (new_vec, j, AREF (vec, j - 1));
          XSETCDR (font_group, new_vec);
          vec = new_vec;
          goto found;
        }
-
-      /* No font of the current spec for C.  Try the next spec.  */
-      i--;
+      if (i >= 0)
+       i = found_index;
     }
 
   FONTSET_SET (fontset, make_number (c), make_number (0));
@@ -989,7 +1011,6 @@
      Lisp_Object object;
 {
   Lisp_Object fontset, rfont_def, charset;
-  int face_id;
   int id;
 
   if (ASCII_CHAR_P (c))
@@ -1364,28 +1385,6 @@
 }
 
 
-/* Return an ASCII font name generated from fontset name NAME and
-   font-spec ASCII_SPEC.  NAME is a string conforming to XLFD.  */
-
-static INLINE Lisp_Object
-generate_ascii_font_name (name, ascii_spec)
-     Lisp_Object name, ascii_spec;
-{
-  Lisp_Object font_spec = Ffont_spec (0, NULL);
-  int i;
-  char xlfd[256];
-
-  if (font_parse_xlfd ((char *) SDATA (name), font_spec) < 0)
-    error ("Not an XLFD font name: %s", SDATA (name));
-  for (i = FONT_FOUNDRY_INDEX; i < FONT_EXTRA_INDEX; i++)
-    if (! NILP (AREF (ascii_spec, i)))
-      ASET (font_spec, i, AREF (ascii_spec, i));
-  i = font_unparse_xlfd (font_spec, 0, xlfd, 256);
-  if (i < 0)
-    error ("Not an XLFD font name: %s", SDATA (name));
-  return make_unibyte_string (xlfd, i);
-}
-
 /* Callback function for map_charset_chars in Fset_fontset_font.
    ARG is a vector [ FONTSET FONT_DEF ADD ASCII SCRIPT_RANGE_LIST ].
 
@@ -1770,7 +1769,6 @@
   Lisp_Object registry = AREF (font_spec, FONT_REGISTRY_INDEX);
   Lisp_Object fontset_spec, alias, name, fontset;
   Lisp_Object val;
-  int i;
 
   val = assoc_no_quit (font_spec, auto_fontset_alist);
   if (CONSP (val))