improved colored diff
Python Shell
Latest commit dd5a5ac Mar 12, 2017 @jeffkaufman committed on GitHub add travis (#93)


Improved colored diff


Download the latest icdiff binary and put it on your PATH.

Alternatively, install with pip:

  pip install git+


icdiff [options] left_file right_file

Show differences between files in a two column view.


  --version             show program's version number and exit
  -h, --help            show this help message and exit
  --cols=COLS           specify the width of the screen. Autodetection is Unix
  --encoding=ENCODING   specify the file encoding; defaults to utf8
  --head=HEAD           consider only the first N lines of each file
  -H, --highlight       color by changing the background color instead of the
                        foreground color.  Very fast, ugly, displays all
  -L LABELS, --label=LABELS
                        override file labels with arbitrary tags. Use twice,
                        one for each file
  -N, --line-numbers    generate output with line numbers
  --no-bold             use non-bold colors; recommended for with solarized
  --no-headers          don't label the left and right sides with their file
                        specify the output encoding; defaults to utf8
  --recursive           recursively compare subdirectories
  --show-all-spaces     color all non-matching whitespace including that which
                        is not needed for drawing the eye to changes.  Slow,
                        ugly, displays all changes
  --tabsize=TABSIZE     tab stop spacing
  -u, --patch           generate patch. This is always true, and only exists
                        for compatibility
  -U NUM, --unified=NUM, --numlines=NUM
                        how many lines of context to print; can't be combined
                        with --whole-file
  -W, --whole-file      show the whole file instead of just changed lines and

Using with git

To see what it looks like, try:

git difftool --extcmd icdiff

To install this as a tool you can use with git, copy git-icdiff onto your path and run:

git icdiff

Using with subversion

To try it out, run:

svn diff --diff-cmd icdiff

Using with Mercurial

Add the following to your ~/.hgrc:


opts.icdiff=--recursive --line-numbers

Or check more in-depth setup instructions.

Running tests

./ python2
./ python3


This file is derived from difflib.HtmlDiff which is under the license. I release my changes here under the same license. This is GPL compatible.