Changes for separate unspecified foreground and background colors

on character terminals:

* dispextern.h (FACE_TTY_DEFAULT_FG_COLOR)
(FACE_TTY_DEFAULT_BG_COLOR):  New macros.

* xfaces.c (Qunspecified_fg, Qunspecified_bg): New variables.
(syms_of_xfaces): Initialize and staticpro them.
(tty_defined_color): If the color name is unspecified-fg or
unspecified-bg, return FACE_TTY_DEFAULT_FG_COLOR and
FACE_TTY_DEFAULT_BG_COLOR, respectively, as the pixel value.
(tty_color_name): If the color pixel value is either
FACE_TTY_DEFAULT_FG_COLOR or FACE_TTY_DEFAULT_BG_COLOR, return
Qunspecified_fg or Qunspecified_bg, respectively.
(Finternal_set_lisp_face_attribute): Allow values Qunspecified_fg
and Qunspecified_bg for foreground and background colors.
(realize_default_face): If the foreground and background colors
are not specified, default to Qunspecified_fg and Qunspecified_bg.
(realize_tty_face): By default, set the face colors to
FACE_TTY_DEFAULT_FG_COLOR and FACE_TTY_DEFAULT_BG_COLOR.
[MSDOS]: Handle FACE_TTY_DEFAULT_FG_COLOR and
FACE_TTY_DEFAULT_BG_COLOR when face colors are not defined.
Reverse the colors if the default colors were reversed.

* dispnew.c (init_display): Initialize the frame pixels of the
initial frame to FACE_TTY_DEFAULT_FG_COLOR and
FACE_TTY_DEFAULT_BG_COLOR.

* term.c (turn_on_face): If the default fore- and background
colors are reversed, enter inverse video mode.  Don't send color
escape sequences for unspecified foreground and background colors.
(turn_off_face): Handle unspecified-fg and unspecified-bg colors.

* dosfns.c (unspecified_colors): New variable.
(msdos_stdcolor_idx): Handle unspecified-fg and unspecified-bg
color names, return FACE_TTY_DEFAULT_FG_COLOR and
FACE_TTY_DEFAULT_BG_COLOR, respectively.
(msdos_stdcolor_name): Handle FACE_TTY_DEFAULT_FG_COLOR and
FACE_TTY_DEFAULT_BG_COLOR, return Qunspecified_fg and
Qunspecified_bg, respectively.

* msdos.c (IT_set_face): Support FACE_TTY_DEFAULT_FG_COLOR and
FACE_TTY_DEFAULT_BG_COLOR as pixel values.

* faces.el (face-read-integer, read-face-attribute)
(color-defined-p, color-values): Allow color values unspecified-fg
and unspecified-bg, handle them as unspecified.

1 files changed, 43 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index df9ad9937c5..97ffe12775e 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,46 @@
+1999-12-15  Eli Zaretskii  <eliz@is.elta.co.il>
+
+        * dispextern.h (FACE_TTY_DEFAULT_FG_COLOR)
+        (FACE_TTY_DEFAULT_BG_COLOR):  New macros.
+
+        * xfaces.c (Qunspecified_fg, Qunspecified_bg): New variables.
+        (syms_of_xfaces): Initialize and staticpro them.
+        (tty_defined_color): If the color name is unspecified-fg or
+        unspecified-bg, return FACE_TTY_DEFAULT_FG_COLOR and
+        FACE_TTY_DEFAULT_BG_COLOR, respectively, as the pixel value.
+        (tty_color_name): If the color pixel value is either
+        FACE_TTY_DEFAULT_FG_COLOR or FACE_TTY_DEFAULT_BG_COLOR, return
+        Qunspecified_fg or Qunspecified_bg, respectively.
+        (Finternal_set_lisp_face_attribute): Allow values Qunspecified_fg
+        and Qunspecified_bg for foreground and background colors.
+        (realize_default_face): If the foreground and background colors
+        are not specified, default to Qunspecified_fg and Qunspecified_bg.
+        (realize_tty_face): By default, set the face colors to
+        FACE_TTY_DEFAULT_FG_COLOR and FACE_TTY_DEFAULT_BG_COLOR.
+        [MSDOS]: Handle FACE_TTY_DEFAULT_FG_COLOR and
+        FACE_TTY_DEFAULT_BG_COLOR when face colors are not defined.
+        Reverse the colors if the default colors were reversed.
+
+        * dispnew.c (init_display): Initialize the frame pixels of the
+        initial frame to FACE_TTY_DEFAULT_FG_COLOR and
+        FACE_TTY_DEFAULT_BG_COLOR.
+
+        * term.c (turn_on_face): If the default fore- and background
+        colors are reversed, enter inverse video mode.  Don't send color
+        escape sequences for unspecified foreground and background colors.
+        (turn_off_face): Handle unspecified-fg and unspecified-bg colors.
+
+        * dosfns.c (unspecified_colors): New variable.
+        (msdos_stdcolor_idx): Handle unspecified-fg and unspecified-bg
+        color names, return FACE_TTY_DEFAULT_FG_COLOR and
+        FACE_TTY_DEFAULT_BG_COLOR, respectively.
+        (msdos_stdcolor_name): Handle FACE_TTY_DEFAULT_FG_COLOR and
+        FACE_TTY_DEFAULT_BG_COLOR, return Qunspecified_fg and
+        Qunspecified_bg, respectively.
+
+        * msdos.c (IT_set_face): Support FACE_TTY_DEFAULT_FG_COLOR and
+        FACE_TTY_DEFAULT_BG_COLOR as pixel values.
+
 1999-12-15  Kenichi Handa  <handa@etl.go.jp>
 
         * coding.c (code_convert_region): Fix the secoding arg to