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git/contrib/examples/git-gc.sh
David Kastrup 822f7c7349 Supplant the "while case ... break ;; esac" idiom
A lot of shell scripts contained stuff starting with

	while case "$#" in 0) break ;; esac

and similar.  I consider breaking out of the condition instead of the
body od the loop ugly, and the implied "true" value of the
non-matching case is not really obvious to humans at first glance.  It
happens not to be obvious to some BSD shells, either, but that's
because they are not POSIX-compliant.  In most cases, this has been
replaced by a straight condition using "test".  "case" has the
advantage of being faster than "test" on vintage shells where "test"
is not a builtin.  Since none of them is likely to run the git
scripts, anyway, the added readability should be worth the change.

A few loops have had their termination condition expressed
differently.

Signed-off-by: David Kastrup <dak@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-23 16:12:00 -07:00

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#!/bin/sh
#
# Copyright (c) 2006, Shawn O. Pearce
#
# Cleanup unreachable files and optimize the repository.
USAGE='[--prune]'
SUBDIRECTORY_OK=Yes
. git-sh-setup
no_prune=:
while test $# != 0
do
case "$1" in
--prune)
no_prune=
;;
--)
usage
;;
esac
shift
done
case "$(git config --get gc.packrefs)" in
notbare|"")
test $(is_bare_repository) = true || pack_refs=true;;
*)
pack_refs=$(git config --bool --get gc.packrefs)
esac
test "true" != "$pack_refs" ||
git pack-refs --prune &&
git reflog expire --all &&
git-repack -a -d -l &&
$no_prune git prune &&
git rerere gc || exit