a few days ago I found a patch for gitk that adds a checkbox 'Ignore
space change' to the gitk GUI and -- when clicked -- adds the '-w'
switch to the diff command. I found that a very convenient way to see
'what has really changed'. The patch was contributed by Steffen
Prohaska and has sha1 b9b86007e27d9a06d58feab618a5be1d491ed13e in the
git://git.kernel.org/pub/scm/git/git.git repository.
Inspired by this, I thought a '--color-words' switch would be even more
convenient. I took the patch as a template and kinda replaced all
occurences of '-w' with '--color-words' (do not take this literally).
Unfortunately gitk then shows the diffs not colorized but with those
ugly escape sequences instead. I'm not a Python person and just able
to 'copy and waste', but probably some of you had the same idea and
got it right.
I'm not only not a Python person but also not a Tcl person. Did't even
figure out the difference. Sorry for that.
However, what I figured out is that it's not as simple as I thought: The
colorization in question is hard coded in the last 'else' branch of
'getblobdiffline'. When a line starts with a '+' or '-', then it's shown
in green or red. To support the --color-words switch it would be
neccessary to actually parse diff's output wrt. to the colors.
Sorry for the noise.
Dirk
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