compat: Add simplified merge sort implementation from glibc

diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index 0cdd80073bcbe0d9ffea30de85f9dda57f552e7f..17ca5b84f0c077d61b9392bd7900954ce35d6cbf 100755 (executable)
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -3,42 +3,29 @@
 use strict;
 use Git;
 
-# Prompt colors:
-my ($prompt_color, $header_color, $help_color, $normal_color);
-# Diff colors:
-my ($new_color, $old_color, $fraginfo_color, $metainfo_color, $whitespace_color);
-
-my ($use_color, $diff_use_color);
 my $repo = Git->repository();
 
-$use_color = $repo->get_colorbool('color.interactive');
-
-if ($use_color) {
-       # Set interactive colors:
+my $menu_use_color = $repo->get_colorbool('color.interactive');
+my ($prompt_color, $header_color, $help_color) =
+       $menu_use_color ? (
+               $repo->get_color('color.interactive.prompt', 'bold blue'),
+               $repo->get_color('color.interactive.header', 'bold'),
+               $repo->get_color('color.interactive.help', 'red bold'),
+       ) : ();
 
-       # Grab the 3 main colors in git color string format, with sane
-       # (visible) defaults:
-       $prompt_color = $repo->get_color("color.interactive.prompt", "bold blue");
-       $header_color = $repo->get_color("color.interactive.header", "bold");
-       $help_color = $repo->get_color("color.interactive.help", "red bold");
-       $normal_color = $repo->get_color("", "reset");
+my $diff_use_color = $repo->get_colorbool('color.diff');
+my ($fraginfo_color) =
+       $diff_use_color ? (
+               $repo->get_color('color.diff.frag', 'cyan'),
+       ) : ();
 
-       # Do we also set diff colors?
-       $diff_use_color = $repo->get_colorbool('color.diff');
-       if ($diff_use_color) {
-               $new_color = $repo->get_color("color.diff.new", "green");
-               $old_color = $repo->get_color("color.diff.old", "red");
-               $fraginfo_color = $repo->get_color("color.diff.frag", "cyan");
-               $metainfo_color = $repo->get_color("color.diff.meta", "bold");
-               $whitespace_color = $repo->get_color("color.diff.whitespace", "normal red");
-       }
-}
+my $normal_color = $repo->get_color("", "reset");
 
 sub colored {
        my $color = shift;
        my $string = join("", @_);
 
-       if ($use_color) {
+       if (defined $color) {
                # Put a color code at the beginning of each line, a reset at the end
                # color after newlines that are not at the end of the string
                $string =~ s/(\n+)(.)/$1$color$2/g;
@@ -304,7 +291,7 @@ sub highlight_prefix {
                return "$prefix$remainder";
        }
 
-       if (!$use_color) {
+       if (!$menu_use_color) {
                return "[$prefix]$remainder";
        }