[PATCH 0/8] make gitk work better in non-top-level directory

This series fixes a few different bugs in gitk related to its working directory.

I started working on patch 1, which fixes "Highlight this only/too" when gitk is started in a subdirectory. This problem has bothered me for a long time, but I had heard that the Tcl code in gitk was hard to maintain, so I didn't have a look at it until now. I have to say that it was a lot easier to follow the code than I had feared.

While testing that the fix in patch 1 worked, I found that gitk does not work very well when the work tree is not at ".git/..", so most of the other patches try to improve that situation.

I think I have tested most combinations of setups (top-level dir, subdir, separate work tree, bare repo, .git) and operations (highlight file, blame, external diff, show origin of line).

Martin von Zweigbergk (8):
  gitk: fix file highlight when run in subdirectory
  gitk: fix "show origin of this line" with separate work tree
  gitk: fix "blame parent commit" with separate work tree
  gitk: fix "External diff" with separate work tree
  gitk: put temporary directory inside .git
  gitk: run 'git rev-parse --git-dir' only once
  gitk: simplify calculation of gitdir
  gitk: show modified files with separate work tree

 gitk-git/gitk |   59 +++++++++++++++++++++++++++++++-------------------------
 1 files changed, 33 insertions(+), 26 deletions(-)