diff options
Diffstat (limited to 'git-filter-branch.sh')
| -rwxr-xr-x | git-filter-branch.sh | 71 |
1 files changed, 47 insertions, 24 deletions
diff --git a/git-filter-branch.sh b/git-filter-branch.sh index 37e044db40..962a93b586 100755 --- a/git-filter-branch.sh +++ b/git-filter-branch.sh @@ -97,12 +97,12 @@ set_ident () { echo "case \"\$GIT_${uid}_NAME\" in \"\") GIT_${uid}_NAME=\"\${GIT_${uid}_EMAIL%%@*}\" && export GIT_${uid}_NAME;; esac" } -USAGE="[--env-filter <command>] [--tree-filter <command>] \ -[--index-filter <command>] [--parent-filter <command>] \ -[--msg-filter <command>] [--commit-filter <command>] \ -[--tag-name-filter <command>] [--subdirectory-filter <directory>] \ -[--original <namespace>] [-d <directory>] [-f | --force] \ -[<rev-list options>...]" +USAGE="[--env-filter <command>] [--tree-filter <command>] + [--index-filter <command>] [--parent-filter <command>] + [--msg-filter <command>] [--commit-filter <command>] + [--tag-name-filter <command>] [--subdirectory-filter <directory>] + [--original <namespace>] [-d <directory>] [-f | --force] + [<rev-list options>...]" OPTIONS_SPEC= . git-sh-setup @@ -125,6 +125,7 @@ filter_subdir= orig_namespace=refs/original/ force= prune_empty= +remap_to_ancestor= while : do case "$1" in @@ -137,6 +138,12 @@ do force=t continue ;; + --remap-to-ancestor) + # deprecated ($remap_to_ancestor is set now automatically) + shift + remap_to_ancestor=t + continue + ;; --prune-empty) shift prune_empty=t @@ -182,6 +189,7 @@ do ;; --subdirectory-filter) filter_subdir="$OPTARG" + remap_to_ancestor=t ;; --original) orig_namespace=$(expr "$OPTARG/" : '\(.*[^/]\)/*$')/ @@ -200,7 +208,7 @@ t,) ,*) ;; *) - die "Cannot set --prune-empty and --filter-commit at the same time" + die "Cannot set --prune-empty and --commit-filter at the same time" esac case "$force" in @@ -252,20 +260,35 @@ test -s "$tempdir"/heads || GIT_INDEX_FILE="$(pwd)/../index" export GIT_INDEX_FILE -git read-tree || die "Could not seed the index" # map old->new commit ids for rewriting parents mkdir ../map || die "Could not create map/ directory" +# we need "--" only if there are no path arguments in $@ +nonrevs=$(git rev-parse --no-revs "$@") || exit +if test -z "$nonrevs" +then + dashdash=-- +else + dashdash= + remap_to_ancestor=t +fi + +rev_args=$(git rev-parse --revs-only "$@") + case "$filter_subdir" in "") - git rev-list --reverse --topo-order --default HEAD \ - --parents --simplify-merges "$@" + eval set -- "$(git rev-parse --sq --no-revs "$@")" ;; *) - git rev-list --reverse --topo-order --default HEAD \ - --parents --simplify-merges "$@" -- "$filter_subdir" -esac > ../revs || die "Could not get the commits" + eval set -- "$(git rev-parse --sq --no-revs "$@" $dashdash \ + "$filter_subdir")" + ;; +esac + +git rev-list --reverse --topo-order --default HEAD \ + --parents --simplify-merges $rev_args "$@" > ../revs || + die "Could not get the commits" commits=$(wc -l <../revs | tr -d " ") test $commits -eq 0 && die "Found nothing to rewrite" @@ -316,7 +339,7 @@ while read commit parents; do die "tree filter failed: $filter_tree" ( - git diff-index -r --name-only $commit && + git diff-index -r --name-only --ignore-submodules $commit && git ls-files --others ) > "$tempdir"/tree-state || exit git update-index --add --replace --remove --stdin \ @@ -345,19 +368,19 @@ while read commit parents; do die "could not write rewritten commit" done <../revs -# In case of a subdirectory filter, it is possible that a specified head -# is not in the set of rewritten commits, because it was pruned by the -# revision walker. Fix it by mapping these heads to the unique nearest -# ancestor that survived the pruning. +# If we are filtering for paths, as in the case of a subdirectory +# filter, it is possible that a specified head is not in the set of +# rewritten commits, because it was pruned by the revision walker. +# Ancestor remapping fixes this by mapping these heads to the unique +# nearest ancestor that survived the pruning. -if test "$filter_subdir" +if test "$remap_to_ancestor" = t then while read ref do sha1=$(git rev-parse "$ref"^0) test -f "$workdir"/../map/$sha1 && continue - ancestor=$(git rev-list --simplify-merges -1 \ - $ref -- "$filter_subdir") + ancestor=$(git rev-list --simplify-merges -1 "$ref" "$@") test "$ancestor" && echo $(map $ancestor) >> "$workdir"/../map/$sha1 done < "$tempdir"/heads fi @@ -447,17 +470,17 @@ if [ "$filter_tag_name" ]; then "$new_sha1" "$new_ref" git cat-file tag "$ref" | sed -n \ - -e "1,/^$/{ + -e '1,/^$/{ /^object /d /^type /d /^tag /d - }" \ + }' \ -e '/^-----BEGIN PGP SIGNATURE-----/q' \ -e 'p' ) | git mktag) || die "Could not create new tag object for $ref" if git cat-file tag "$ref" | \ - grep '^-----BEGIN PGP SIGNATURE-----' >/dev/null 2>&1 + sane_grep '^-----BEGIN PGP SIGNATURE-----' >/dev/null 2>&1 then warn "gpg signature stripped from tag object $sha1t" fi |