Add support for italic text on ttys.

* src/dispextern.h: Replace unused TTY_CAP_BLINK with TTY_CAP_ITALIC.
(struct face): Remove unused fields tty_dim_p, tty_blinking_p, and
tty_alt_charset_p.  Add tty_italic_p.

* src/term.c: Support italics in capable terminals.
(no_color_bit): Replace unused NC_BLINK with NC_ITALIC.
(turn_on_face): Output using TS_enter_italic_mode if available.
Don't handle unused blinking and alt-charset cases.
(turn_off_face): Handle italic case; discard unused tty_blinking_p
and tty_alt_charset_p cases.
(tty_capable_p, init_tty): Support italics.

* src/termchar.h (struct tty_display_info): Add field for italics.
Remove unused blink field.

* src/xfaces.c (tty_supports_face_attributes_p, realize_tty_face):
Handle slant.

Fixes: debbugs:9652

1 files changed, 20 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 563faaae68b..fb8b2a7b956 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,23 @@
+2012-06-09  Chong Yidong  <cyd@gnu.org>
+
+        * term.c: Support italics in capable terminals (Bug#9652).
+        (no_color_bit): Replace unused NC_BLINK with NC_ITALIC.
+        (turn_on_face): Output using TS_enter_italic_mode if available.
+        Don't handle unused blinking and alt-charset cases.
+        (turn_off_face): Handle italic case; discard unused tty_blinking_p
+        and tty_alt_charset_p cases.
+        (tty_capable_p, init_tty): Support italics.
+
+        * termchar.h (struct tty_display_info): Add field for italics.
+        Remove unused blink field.
+
+        * xfaces.c (tty_supports_face_attributes_p, realize_tty_face):
+        Handle slant.
+
+        * dispextern.h: Replace unused TTY_CAP_BLINK with TTY_CAP_ITALIC.
+        (struct face): Remove unused fields tty_dim_p, tty_blinking_p, and
+        tty_alt_charset_p.  Add tty_italic_p.
+
 2012-06-09  Michael Albinus  <michael.albinus@gmx.de>
 
         * dbusbind.c (XD_BASIC_DBUS_TYPE): Use dbus_type_is_valid and