Don't crash if internal-char-font is called on non-GUI frames.

 src/fontset.c (Finternal_char_font): Return nil on non-GUI frames.
 (Bug#11964)

1 files changed, 2 insertions, 0 deletions

diff --git a/src/fontset.c b/src/fontset.c
index da745b31ca1..ed468d33a15 100644
--- a/src/fontset.c
+++ b/src/fontset.c
@@ -1879,6 +1879,8 @@ DEFUN ("internal-char-font", Finternal_char_font, Sinternal_char_font, 1, 2, 0,
     }
   if (! CHAR_VALID_P (c))
     return Qnil;
+  if (!FRAME_WINDOW_P (f))
+    return Qnil;
   face_id = FACE_FOR_CHAR (f, FACE_FROM_ID (f, face_id), c, pos, Qnil);
   face = FACE_FROM_ID (f, face_id);
   if (face->font)