[Emacs-diffs] Changes to emacs/src/font.c,v

[Kenichi Handa]

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Kenichi Handa <handa>   08/10/23 07:49:15

Index: font.c
===================================================================
RCS file: /cvsroot/emacs/emacs/src/font.c,v
retrieving revision 1.89
retrieving revision 1.90
diff -u -b -r1.89 -r1.90
--- font.c      23 Oct 2008 04:01:23 -0000      1.89
+++ font.c      23 Oct 2008 07:49:15 -0000      1.90
@@ -2474,12 +2474,37 @@
       else if (EQ (key, QCscript))
        {
          val2 = assq_no_quit (val, Vscript_representative_chars);
-         if (! NILP (val2))
-           for (val2 = XCDR (val2); CONSP (val2); val2 = XCDR (val2))
-             if (font_encode_char (font, XINT (XCAR (val2)))
+         if (CONSP (val2))
+           {
+             val2 = XCDR (val2);
+             if (CONSP (val2))
+               {
+                 /* All characters in the list must be supported.  */
+                 for (; CONSP (val2); val2 = XCDR (val2))
+                   {
+                     if (! NATNUMP (XCAR (val2)))
+                       continue;
+                     if (font_encode_char (font, XFASTINT (XCAR (val2)))
                  == FONT_INVALID_CODE)
                return 0;
        }
+               }
+             else if (VECTORP (val2))
+               {
+                 /* At most one character in the vector must be supported.  */
+                 for (i = 0; i < ASIZE (val2); i++)
+                   {
+                     if (! NATNUMP (AREF (val2, i)))
+                       continue;
+                     if (font_encode_char (font, XFASTINT (AREF (val2, i)))
+                         != FONT_INVALID_CODE)
+                       return break;
+                   }
+                 if (i == ASIZE (val2))
+                   return 0;
+               }
+           }
+       }
       else if (EQ (key, QCotf))
        {
          struct font *fontp;
@@ -3808,7 +3833,12 @@
 `:name'
 
 VALUE must be a string of XLFD-style or fontconfig-style font name.
-usage: (font-spec ARGS ...)  */)
+usage: (font-spec ARGS ...)
+
+`:script'
+
+VALUE must be a symbol representing a script that the font must
+support.  */)
      (nargs, args)
      int nargs;
      Lisp_Object *args;
@@ -3904,7 +3934,13 @@
 
 DEFUN ("font-get", Ffont_get, Sfont_get, 2, 2, 0,
        doc: /* Return the value of FONT's property KEY.
-FONT is a font-spec, a font-entity, or a font-object.  */)
+FONT is a font-spec, a font-entity, or a font-object.
+KEY must be one of these symbols:
+  :family, :weight, :slant, :width, :foundry, :adstyle, :registry,
+  :size, :name, :script
+See the documentation of `font-spec' for their meanings.
+If FONT is a font-entity or font-object, the value of :script may be
+a list of scripts that are supported by the font.  */)
      (font, key)
      Lisp_Object font, key;
 {