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-The git-diffall script provides a directory based diff mechanism
-for git.
-
-To determine what diff viewer is used, the script requires either
-the 'diff.tool' or 'merge.tool' configuration option to be set.
-
-This script is compatible with most common forms used to specify a
-range of revisions to diff:
-
- 1. git diffall: shows diff between working tree and staged changes
- 2. git diffall --cached [<commit>]: shows diff between staged
- changes and HEAD (or other named commit)
- 3. git diffall <commit>: shows diff between working tree and named
- commit
- 4. git diffall <commit> <commit>: show diff between two named commits
- 5. git diffall <commit>..<commit>: same as above
- 6. git diffall <commit>...<commit>: show the changes on the branch
- containing and up to the second, starting at a common ancestor
- of both <commit>
-
-Note: all forms take an optional path limiter [-- <path>*]
-
-The '--extcmd=<command>' option allows the user to specify a custom
-command for viewing diffs. When given, configured defaults are
-ignored and the script runs $command $LOCAL $REMOTE. Additionally,
-$BASE is set in the environment.
-
-This script is based on an example provided by Thomas Rast on the
-Git list [1]:
-
-[1] http://thread.gmane.org/gmane.comp.version-control.git/124807