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filter-branch: also don't fail in map() if a commit cannot be mapped 

The map() function can be used by filters to map a commit id to its
rewritten id. Such a mapping may not exist, in which case the identity
mapping is used (the commit is returned unchanged).

In the rewrite loop, this mapping is also needed, but was done
explicitly in the same way. Use the map() function instead.

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Sixt 2007-06-06 20:38:35 +02:00 committed by Junio C Hamano
parent 2766ce2815
commit 3520e1e868
1 changed files with 5 additions and 9 deletions
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14
git-filter-branch.sh
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@ -184,7 +184,8 @@ USAGE="git-filter-branch [-d TEMPDIR] [FILTERS] DESTBRANCH [REV-RANGE]"
map()
{
[ -r "$workdir/../map/$1" ] || return 1
# if it was not rewritten, take the original
test -r "$workdir/../map/$1" || echo "$1"
cat "$workdir/../map/$1"
}
@ -347,14 +348,9 @@ while read commit; do
parentstr=
for parent in $(get_parents $commit); do
if [ -r "../map/$parent" ]; then
for reparent in $(cat "../map/$parent"); do
parentstr="$parentstr -p $reparent"
done
else
# if it was not rewritten, take the original
parentstr="$parentstr -p $parent"
fi
for reparent in $(map "$parent"); do
parentstr="$parentstr -p $reparent"
done
done
if [ "$filter_parent" ]; then
parentstr="$(echo "$parentstr" | eval "$filter_parent")"