[PATCH v2] diff: run arguments through precompose_argv

I have used Junios proposal/changes for the commit message as I liked it and it is probably more in line with the usual commit messages of the git project. I hope this is ok.

Let me know if you need me to do any more changes or what the next steps are if the patch is ok.

Alexander

Alexander Rinass (1):
  diff: run arguments through precompose_argv

 builtin/diff-files.c         |  1 +
 builtin/diff-index.c         |  1 +
 builtin/diff-tree.c          |  2 ++
 builtin/diff.c               |  1 +
 t/t3910-mac-os-precompose.sh | 42 ++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 47 insertions(+)