Re: [PATCH] diff: fix coloring of extended diff headers

> Coloring the extended headers where done as a whole not per line. less with
> option -R (which is the default from git) does not support this coloring
> mode because of performance reasons. The -r option would be an alternative
> but has problems with lines that are longer than the screen. Therefore
> stick to the idiom to color each line separately. The problem is, that the
> result of ill_metainfo() will also be used as an parameter to an external
> diff driver, so we need to disable coloring in this case.
>
> Because coloring is now done inside fill_metainfo() we can simply add this
> string to the diff header and therefore keep the last newline in the
> extended header. This results also into the fact that the external diff
> driver now gets this last newline too. Which is a change in behavior
> but a good one.