Option to ignore whitespace difference

[glenjamin]

A little tick-box on the diff viewer that allowed white-space ignoring would be nice :)

[souch]

I managed to ignore whitespace change by adding -w (--ignore-all-space) to the git argument list

add in file cola/git.py at line 336 :

        # Prepare the argument list
        git_args = [
            GIT,
            '-c', 'diff.suppressBlankEmpty=false',
            '-c', 'log.showSignature=false',
            dashify(cmd),
        ]
        # ignore whitespace change
        cmds_that_have_ignore_all_space = ['diff', 'log', 'show', 'diff-files', 'diff-index', 'diff-tree']
        if cmd in cmds_that_have_ignore_all_space:
            git_args.append('-w')

I'll see later if I can make this as an option in a clean pull request.