GNU bug report logs - #17808
24.4.50; vc-annotate colors

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From: Juri Linkov <juri <at> jurta.org>
To: 17808 <at> debbugs.gnu.org
Subject: bug#17808: 24.4.50; vc-annotate colors
Date: Thu, 19 Jun 2014 09:54:44 +0300

Severity: wishlist
Tags: patch

Currently vc-annotate uses dark background even when the default background
is light.  Would be nicer to have another option similar to the existing
`vc-annotate-background' that will define the default foreground
(instead of the default background) and put colors from color-map
on the background instead of the foreground:

=== modified file 'lisp/vc/vc-annotate.el'
--- lisp/vc/vc-annotate.el	2014-02-10 01:34:22 +0000
+++ lisp/vc/vc-annotate.el	2014-06-19 06:52:59 +0000
@@ -109,6 +109,16 @@ (defcustom vc-annotate-background "black
   :type '(choice (const :tag "Default background" nil) (color))
   :group 'vc)
 
+(defcustom vc-annotate-foreground nil
+  "Foreground color for \\[vc-annotate].
+When non-nil, the color range from `vc-annotate-color-map'
+is applied to background, and the color from this definition
+is applied to foreground.
+This option is in effect only when `vc-annotate-background' is nil."
+  :type '(choice (const :tag "Default foreground" nil) (color))
+  :version "24.5"
+  :group 'vc)
+
 (defcustom vc-annotate-menu-elements '(2 0.5 0.1 0.01)
   "Menu elements for the mode-specific menu of VC-Annotate mode.
 List of factors, used to expand/compress the time scale.  See `vc-annotate'."
@@ -347,7 +357,9 @@ (defun vc-annotate (file rev &optional d
 `vc-annotate-menu-elements' customizes the menu elements of the
 mode-specific menu.  `vc-annotate-color-map' and
 `vc-annotate-very-old-color' define the mapping of time to colors.
-`vc-annotate-background' specifies the background color."
+`vc-annotate-background' specifies the background color.
+`vc-annotate-foreground' specifies the foreground color
+when `vc-annotate-background' is nil."
   (interactive
    (save-current-buffer
      (vc-ensure-vc-buffer)
@@ -666,10 +678,15 @@ (defun vc-annotate-lines (limit)
                ;; Make the face if not done.
                (face (or (intern-soft face-name)
                          (let ((tmp-face (make-face (intern face-name))))
-                           (set-face-foreground tmp-face (cdr color))
-                           (when vc-annotate-background
-			     (set-face-background tmp-face
-						  vc-annotate-background))
+                           (cond
+                            (vc-annotate-background
+                             (set-face-foreground tmp-face (cdr color))
+                             (set-face-background tmp-face vc-annotate-background))
+                            (vc-annotate-foreground
+                             (set-face-foreground tmp-face vc-annotate-foreground)
+                             (set-face-background tmp-face (cdr color)))
+                            (t
+                             (set-face-foreground tmp-face (cdr color))))
                            tmp-face))))	; Return the face
           (put-text-property start end 'face face)))))
   ;; Pretend to font-lock there were no matches.

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