diff-tree: do not show the sha1 of the given head with --quiet #163
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"--quite" is documented to "Disable all output of the program". Yet
calling diff-tree with a single commit like
$ git diff-tree --quiet c925fe2
was logging
c925fe2
to the console despite "--quite" being given. This is inconsistent with
both the docs and the behavior if more than a single commit is passed to
diff-tree. Moreover, the output of that single line seems to be documented
nowhere except in a comment for a test. Fix this inconsistency by making
diff-tree really output nothing if "--quiet" is given and fix the test
accordingly.
Signed-off-by: Sebastian Schuberth sschuberth@gmail.com