[PATCH 0/7] mergetool-lib improvements for --tool-help

I ran with John's idea and simplified a few more things so that the --tool-help output shows the correct results.

My final commit is dependent on John's commits but the other two could be picked up independently since they are general improvements.

This does add a few symlinks to the repo for the sake of simplicity; I'm not sure if this presents a problem for folks on other platforms.

The replacement of vim with vimdiff and symlinks simplifies things so that we can later auto-generate the list-of-all-tools for use by Documentation/. This was not previously possible due to the special-case for the vim tools which this series eliminates.

David Aguilar (3):
  mergetools/vim: Remove redundant diff command
  mergetools: Fix difftool/mergetool --tool-help listing for vim
  mergetool--lib: Improve show_tool_help() output

John Keeping (4):
  git-mergetool: move show_tool_help to mergetool--lib
  git-mergetool: remove redundant assignment
  git-mergetool: don't hardcode 'mergetool' in show_tool_help
  git-difftool: use git-mergetool--lib for "--tool-help"

 git-difftool.perl           | 55 +++++----------------------------------
 git-mergetool--lib.sh       | 63 +++++++++++++++++++++++++++++++++++++++------
 git-mergetool.sh            | 37 --------------------------
 mergetools/gvimdiff         |  1 +
 mergetools/gvimdiff2        |  1 +
 mergetools/{vim => vimdiff} | 12 ++-------
 mergetools/vimdiff2         |  1 +
 7 files changed, 67 insertions(+), 103 deletions(-)
 create mode 120000 mergetools/gvimdiff
 create mode 120000 mergetools/gvimdiff2
 rename mergetools/{vim => vimdiff} (68%)
 create mode 120000 mergetools/vimdiff2