diffoutput. To cover this lack I began to look for solutions. A lot of resources refer to the
colordiff, the tool written in
Perl. But I wasn't satisfied with it. Question on StackOverflow and this article have inspired me to develop the
Bashfunction having the same (or almost the same) functionality as
colordiffand having mechanism as described in the early mentioned article.
Some of you can say I have re-invented the wheel because a) there is
diffhas the special options to format output. But I'd like to have simple solution with full support of many output formats as much as possible and the simple usage as the command itself. It uses
sedto format (colorize)
diffoutput. It has the following features:
- The wrapper and can be called as the replacement instead the standard tool;
- Analyzes command line options and generates the special
sedcommands colorizing output;
- Covers all known formatting options (
- It supports
CDIFF_WHEN, the special environment variables having impact on the function behavior (they works similar to
There is help page below. Just follow this link, download the script and try.
$ diff Usage: diff [OPTION]... FILES Wrapper for diff to colorize output of diff for better readability. Try "diff --help" for more information. OPTIONS Diff options All options will be passed to "diff". Coloring options --color[=WHEN], --colour[=WHEN] Controls the colorizing method. WHEN is "always" (the default value if not specified explicitly), "never" or "auto". To make affect globally, set one of these values to CDIFF_WHEN environment variable. ENVIRONMENT VARIABLES CDIFF_COLORS This environment variable is used to specify colors to highlight the separate parts of the diff output. Its value is a colon-separated list of capabilities. Names and responsibility of each capability correspond to the configuration parameters "color.diff.<slot>" used in "git config". Values are integers in decimal representation and can be concatenated with semicolons. Further these values are assembled into ANSI escape codes. meta=1;37 Metainformation (names of compared files) frag=36 Hunk header (line numbers of changed lines) old=31 Removed lines new=32 Added lines mod=34 Modified lines CDIFF_WHEN Colorizing method does effect on all runs; assumes the same values as for the "--color" option. The default value is "auto" and can be superseded by the "--color" option.