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color: allow multiple attributes

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In configuration files (and "git config --color" command line), we
supported one and only one attribute after foreground and background
color.  Accept combinations of attributes, e.g.

    [diff.color]
            old = red reverse bold

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano
2010-02-27 18:56:38 -08:00
parent c5034673fd
commit 8b124135a9
3 changed files with 41 additions and 14 deletions
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16
color.h
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@@ -1,8 +1,20 @@
#ifndef COLOR_H
#define COLOR_H
/* "\033[1;38;5;2xx;48;5;2xxm\0" is 23 bytes */
#define COLOR_MAXLEN 24
/* 2 + (2 * num_attrs) + 8 + 1 + 8 + 'm' + NUL */
/* "\033[1;2;4;5;7;38;5;2xx;48;5;2xxm\0" */
/*
* The maximum length of ANSI color sequence we would generate:
* - leading ESC '[' 2
* - attr + ';' 2 * 8 (e.g. "1;")
* - fg color + ';' 9 (e.g. "38;5;2xx;")
* - fg color + ';' 9 (e.g. "48;5;2xx;")
* - terminating 'm' NUL 2
*
* The above overcounts attr (we only use 5 not 8) and one semicolon
* but it is close enough.
*/
#define COLOR_MAXLEN 40
/*
* This variable stores the value of color.ui