Allow glyphless-char-display to distinguish between X and text terminals.

Use this for Tabulated List mode.

* lisp/emacs-lisp/tabulated-list.el (tabulated-list-mode): Use a custom
glyphless-char-display table.
(tabulated-list-glyphless-char-display): New var.

* src/term.c (produce_glyphless_glyph): Handle cons cell entry in
glyphless-char-display.

* src/xdisp.c (lookup_glyphless_char_display)
(produce_glyphless_glyph): Handle cons cell entry in
glyphless-char-display.
(Vglyphless_char_display): Document it.

diff --git a/etc/NEWS b/etc/NEWS
index 869e952..69540fa 100644 (file)
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -779,6 +779,9 @@ sc.el, x-menu.el, rnews.el, rnewspost.el
 \f
 * Lisp changes in Emacs 24.1
 
+** `glyphless-char-table' can now distinguish between graphical and
+text terminal display, via a char-table entry that is a cons cell.
+
 ** `open-network-stream' can now be used to open an encrypted stream.
 It now accepts an optional `:type' parameter for initiating a TLS
 connection, directly or via STARTTLS.  To do STARTTLS, additional

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 373ae63..2e024d3 100644 (file)
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,9 @@
+2011-04-18  Chong Yidong  <cyd@stupidchicken.com>
+
+       * emacs-lisp/tabulated-list.el (tabulated-list-mode): Use a custom
+       glyphless-char-display table.
+       (tabulated-list-glyphless-char-display): New var.
+
 2011-04-18  Sam Steingold  <sds@gnu.org>
 
        * vc/add-log.el (change-log-font-lock-keywords): Add "Thanks to"

diff --git a/lisp/emacs-lisp/tabulated-list.el b/lisp/emacs-lisp/tabulated-list.el
index 6409c22..2fdfa95 100644 (file)
--- a/lisp/emacs-lisp/tabulated-list.el
+++ b/lisp/emacs-lisp/tabulated-list.el
@@ -143,6 +143,15 @@ If ADVANCE is non-nil, move forward by one line afterwards."
     map)
   "Local keymap for `tabulated-list-mode' sort buttons.")
 
+(defvar tabulated-list-glyphless-char-display
+  (let ((table (make-char-table 'glyphless-char-display nil)))
+    (set-char-table-parent table glyphless-char-display)
+    ;; Some text terminals can't display the unicode arrows; be safe.
+    (aset table 9650 (cons nil "^"))
+    (aset table 9660 (cons nil "v"))
+    table)
+  "The `glyphless-char-display' table in Tabulated List buffers.")
+
 (defun tabulated-list-init-header ()
   "Set up header line for the Tabulated List buffer."
   (let ((x tabulated-list-padding)
@@ -341,7 +350,9 @@ as the ewoc pretty-printer."
   (setq truncate-lines t)
   (setq buffer-read-only t)
   (set (make-local-variable 'revert-buffer-function)
-       'tabulated-list-revert))
+       'tabulated-list-revert)
+  (set (make-local-variable 'glyphless-char-display)
+       tabulated-list-glyphless-char-display))
 
 (put 'tabulated-list-mode 'mode-class 'special)
 

diff --git a/src/ChangeLog b/src/ChangeLog
index 22e8596..4017402 100644 (file)
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,13 @@
+2011-04-18  Chong Yidong  <cyd@stupidchicken.com>
+
+       * xdisp.c (lookup_glyphless_char_display)
+       (produce_glyphless_glyph): Handle cons cell entry in
+       glyphless-char-display.
+       (Vglyphless_char_display): Document it.
+
+       * term.c (produce_glyphless_glyph): Handle cons cell entry in
+       glyphless-char-display.
+
 2011-04-17  Chong Yidong  <cyd@stupidchicken.com>
 
        * xdisp.c (get_next_display_element): Remove unnecessary ifdefs.

diff --git a/src/term.c b/src/term.c
index df13d7c..cae83f4 100644 (file)
--- a/src/term.c
+++ b/src/term.c
@@ -1936,6 +1936,8 @@ produce_glyphless_glyph (struct it *it, int for_no_font, Lisp_Object acronym)
        {
          if (! STRINGP (acronym) && CHAR_TABLE_P (Vglyphless_char_display))
            acronym = CHAR_TABLE_REF (Vglyphless_char_display, it->c);
+         if (CONSP (acronym))
+           acronym = XCDR (acronym);
          buf[0] = '[';
          str = STRINGP (acronym) ? SSDATA (acronym) : "";
          for (len = 0; len < 6 && str[len] && ASCII_BYTE_P (str[len]); len++)

diff --git a/src/xdisp.c b/src/xdisp.c
index eaab8da..574c84f 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -5540,9 +5540,19 @@ lookup_glyphless_char_display (int c, struct it *it)
 
   if (CHAR_TABLE_P (Vglyphless_char_display)
       && CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (Vglyphless_char_display)) >= 1)
-    glyphless_method = (c >= 0
-                       ? CHAR_TABLE_REF (Vglyphless_char_display, c)
-                       : XCHAR_TABLE (Vglyphless_char_display)->extras[0]);
+    {
+      if (c >= 0)
+       {
+         glyphless_method = CHAR_TABLE_REF (Vglyphless_char_display, c);
+         if (CONSP (glyphless_method))
+           glyphless_method = FRAME_WINDOW_P (it->f)
+             ? XCAR (glyphless_method)
+             : XCDR (glyphless_method);
+       }
+      else
+       glyphless_method = XCHAR_TABLE (Vglyphless_char_display)->extras[0];
+    }
+
  retry:
   if (NILP (glyphless_method))
     {
@@ -22315,6 +22325,8 @@ produce_glyphless_glyph (struct it *it, int for_no_font, Lisp_Object acronym)
        {
          if (! STRINGP (acronym) && CHAR_TABLE_P (Vglyphless_char_display))
            acronym = CHAR_TABLE_REF (Vglyphless_char_display, it->c);
+         if (CONSP (acronym))
+           acronym = XCAR (acronym);
          str = STRINGP (acronym) ? SSDATA (acronym) : "";
        }
       else
@@ -26950,17 +26962,21 @@ cursor shapes.  */);
   Fput (Qglyphless_char_display, Qchar_table_extra_slots, make_number (1));
 
   DEFVAR_LISP ("glyphless-char-display", Vglyphless_char_display,
-              doc: /* Char-table to control displaying of glyphless characters.
-Each element, if non-nil, is an ASCII acronym string (displayed in a box)
-or one of these symbols:
-  hex-code:   display the hexadecimal code of a character in a box
-  empty-box:  display as an empty box
-  thin-space: display as 1-pixel width space
-  zero-width: don't display
-
-It has one extra slot to control the display of a character for which
-no font is found.  The value of the slot is `hex-code' or `empty-box'.
-The default is `empty-box'.  */);
+              doc: /* Char-table defining glyphless characters.
+Each element, if non-nil, should be one of the following:
+  an ASCII acronym string: display this string in a box
+  `hex-code':   display the hexadecimal code of a character in a box
+  `empty-box':  display as an empty box
+  `thin-space': display as 1-pixel width space
+  `zero-width': don't display
+An element may also be a cons cell (GRAPHICAL . TEXT), which specifies the
+display method for graphical terminals and text terminals respectively.
+GRAPHICAL and TEXT should each have one of the values listed above.
+
+The char-table has one extra slot to control the display of a character for
+which no font is found.  This slot only takes effect on graphical terminals.
+Its value should be an ASCII acronym string, `hex-code', `empty-box', or
+`thin-space'.  The default is `empty-box'.  */);
   Vglyphless_char_display = Fmake_char_table (Qglyphless_char_display, Qnil);
   Fset_char_table_extra_slot (Vglyphless_char_display, make_number (0),
                              Qempty_box);