Hi,
On Thu, 5 Jul 2007, Jeff King wrote:
> status=`((cmd1; echo $? >&3) | cmd2) 3>&1`
Cute.
This is the replacement patch, then (I guess there are still some nits to
be had, so I did not redo the proper patch yet):
git-filter-branch.sh | 43 ++++++++++++++++++++++++++++++++-----------
1 files changed, 32 insertions(+), 11 deletions(-)
diff --git a/git-filter-branch.sh b/git-filter-branch.sh
old mode 100644
new mode 100755
index 6cf67df..f08288d
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -28,6 +28,16 @@ map()
fi
}
+# override die(): this version puts in an extra line break, so that
+# the progress is still visible
+
+die()
+{
+ echo \ >&2
+ echo "$*" >&2
+ exit 1
+}
+
# When piped a commit, output a script to set the ident of either
# "author" or "committer
@@ -181,23 +191,29 @@ while read commit parents; do
export GIT_COMMIT=$commit
git cat-file commit "$commit" >../commit
- eval "$(set_ident AUTHOR <../commit)"
- eval "$(set_ident COMMITTER <../commit)"
- eval "$filter_env" < /dev/null
+ eval "$(set_ident AUTHOR <../commit)" ||
+ die "setting author failed for commit $commit"
+ eval "$(set_ident COMMITTER <../commit)" ||
+ die "setting committer failed for commit $commit"
+ eval "$filter_env" < /dev/null ||
+ die "env filter failed: $filter_env"
if [ "$filter_tree" ]; then
git checkout-index -f -u -a
# files that $commit removed are now still in the working tree;
# remove them, else they would be added again
git ls-files -z --others | xargs -0 rm -f
- eval "$filter_tree" < /dev/null
+ eval "$filter_tree" < /dev/null ||
+ die "tree filter failed: $filter_tree"
+
git diff-index -r $commit | cut -f 2- | tr '\n' '\0' | \
xargs -0 git update-index --add --replace --remove
git ls-files -z --others | \
xargs -0 git update-index --add --replace --remove
fi
- eval "$filter_index" < /dev/null
+ eval "$filter_index" < /dev/null ||
+ die "index filter failed: $filter_index"
parentstr=
for parent in $parents; do
@@ -206,13 +222,17 @@ while read commit parents; do
done
done
if [ "$filter_parent" ]; then
- parentstr="$(echo "$parentstr" | eval "$filter_parent")"
+ parentstr="$(echo "$parentstr" | eval "$filter_parent")" ||
+ die "parent filter failed: $filter_parent"
fi
- sed -e '1,/^$/d' <../commit | \
- eval "$filter_msg" | \
- sh -c "$filter_commit" "git commit-tree" $(git write-tree) \
- $parentstr > ../map/$commit
+ (sed -e '1,/^$/d' <../commit |
+ (eval "$filter_msg" ||
+ die "msg filter failed: $filter_msg" 2>&3) |
+ (sh -c "$filter_commit" "git commit-tree" $(git write-tree) \
+ $parentstr > ../map/$commit ||
+ die "commit filter failed: $filter_commit" 2>&3)) 3>&1 |
+ grep . && die
done <../revs
src_head=$(tail -n 1 ../revs | sed -e 's/ .*//')
@@ -249,7 +269,8 @@ if [ "$filter_tag_name" ]; then
[ -f "../map/$sha1" ] || continue
new_sha1="$(cat "../map/$sha1")"
export GIT_COMMIT="$sha1"
- new_ref="$(echo "$ref" | eval "$filter_tag_name")"
+ new_ref="$(echo "$ref" | eval "$filter_tag_name")" ||
+ die "tag name filter failed: $filter_tag_name"
echo "$ref -> $new_ref ($sha1 -> $new_sha1)"
-
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