Changes sometimes are not highlighted in diff preview with diff.suppressBlankEmpty = true

[Coacher]

Hello.

Subject says it all.

Here are the steps to reproduce this (on Linux):

$ git init
$ echo -e '\n\n123\n\n'>file.txt
$ git add file.txt
$ git commit file.txt -m 'Initial commit'
$ echo -e '\n\n456\n\n'>file.txt
$ git-cola

System info:
git is 2.7.0. git-cola is built from master at 1ed741e.

Please fix.

[davvid]

Nice catch, thanks for the report. This should be easy.

[Coacher]

Thank you for the quick fix.