Imported Upstream version 2.23.1
[platform/upstream/git.git] / git-submodule.sh
index a024a13..58713c5 100755 (executable)
@@ -5,14 +5,17 @@
 # Copyright (c) 2007 Lars Hjemli
 
 dashless=$(basename "$0" | sed -e 's/-/ /')
-USAGE="[--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
+USAGE="[--quiet] [--cached]
+   or: $dashless [--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
    or: $dashless [--quiet] init [--] [<path>...]
    or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
    or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--] [<path>...]
+   or: $dashless [--quiet] set-branch (--default|--branch <branch>) [--] <path>
    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
    or: $dashless [--quiet] foreach [--recursive] <command>
-   or: $dashless [--quiet] sync [--recursive] [--] [<path>...]"
+   or: $dashless [--quiet] sync [--recursive] [--] [<path>...]
+   or: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
 OPTIONS_SPEC=
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
@@ -21,14 +24,10 @@ require_work_tree
 wt_prefix=$(git rev-parse --show-prefix)
 cd_to_toplevel
 
-# Restrict ourselves to a vanilla subset of protocols; the URLs
-# we get are under control of a remote repository, and we do not
-# want them kicking off arbitrary git-remote-* programs.
-#
-# If the user has already specified a set of allowed protocols,
-# we assume they know what they're doing and use that instead.
-: ${GIT_ALLOW_PROTOCOL=file:git:http:https:ssh}
-export GIT_ALLOW_PROTOCOL
+# Tell the rest of git that any URLs we get don't come
+# directly from the user, so it can apply policy as appropriate.
+GIT_PROTOCOL_FROM_USER=0
+export GIT_PROTOCOL_FROM_USER
 
 command=
 branch=
@@ -37,6 +36,7 @@ reference=
 cached=
 recursive=
 init=
+require_init=
 files=
 remote=
 nofetch=
@@ -45,6 +45,7 @@ prefix=
 custom_name=
 depth=
 progress=
+dissociate=
 
 die_if_unmatched ()
 {
@@ -74,7 +75,7 @@ get_submodule_config () {
        value=$(git config submodule."$name"."$option")
        if test -z "$value"
        then
-               value=$(git config -f .gitmodules submodule."$name"."$option")
+               value=$(git submodule--helper config submodule."$name"."$option")
        fi
        printf '%s' "${value:-$default}"
 }
@@ -84,6 +85,11 @@ isnumber()
        n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
 }
 
+# Given a full hex object ID, is this the zero OID?
+is_zero_oid () {
+       echo "$1" | sane_egrep '^0+$' >/dev/null 2>&1
+}
+
 # Sanitize the local git environment for use within a submodule. We
 # can't simply use clear_local_git_env since we want to preserve some
 # of the settings from GIT_CONFIG_PARAMETERS.
@@ -120,6 +126,9 @@ cmd_add()
                -q|--quiet)
                        GIT_QUIET=1
                        ;;
+               --progress)
+                       progress=1
+                       ;;
                --reference)
                        case "$2" in '') usage ;; esac
                        reference_path=$2
@@ -128,6 +137,9 @@ cmd_add()
                --reference=*)
                        reference_path="${1#--reference=}"
                        ;;
+               --dissociate)
+                       dissociate=1
+                       ;;
                --name)
                        case "$2" in '') usage ;; esac
                        custom_name=$2
@@ -155,6 +167,11 @@ cmd_add()
                shift
        done
 
+       if ! git submodule--helper config --check-writeable >/dev/null 2>&1
+       then
+                die "$(eval_gettext "please make sure that the .gitmodules file is in the working tree")"
+       fi
+
        if test -n "$reference_path"
        then
                is_absolute_path "$reference_path" ||
@@ -207,10 +224,24 @@ cmd_add()
                        tstart
                        s|/*$||
                ')
-       git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
-       die "$(eval_gettext "'\$sm_path' already exists in the index")"
+       if test -z "$force"
+       then
+               git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
+               die "$(eval_gettext "'\$sm_path' already exists in the index")"
+       else
+               git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
+               die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
+       fi
+
+       if test -d "$sm_path" &&
+               test -z $(git -C "$sm_path" rev-parse --show-cdup 2>/dev/null)
+       then
+           git -C "$sm_path" rev-parse --verify -q HEAD >/dev/null ||
+           die "$(eval_gettext "'\$sm_path' does not have a commit checked out")"
+       fi
 
-       if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
+       if test -z "$force" &&
+               ! git add --dry-run --ignore-missing --no-warn-embedded-repo "$sm_path" > /dev/null 2>&1
        then
                eval_gettextln "The following path is ignored by one of your .gitignore files:
 \$sm_path
@@ -225,6 +256,11 @@ Use -f if you really want to add it." >&2
                sm_name="$sm_path"
        fi
 
+       if ! git submodule--helper check-name "$sm_name"
+       then
+               die "$(eval_gettext "'$sm_name' is not a valid submodule name")"
+       fi
+
        # perhaps the path exists and is already a git repo, else clone it
        if test -e "$sm_path"
        then
@@ -251,7 +287,7 @@ or you are unsure what this means choose another name with the '--name' option."
                                eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
                        fi
                fi
-               git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${depth:+"$depth"} || exit
+               git submodule--helper clone ${GIT_QUIET:+--quiet} ${progress:+"--progress"} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${dissociate:+"--dissociate"} ${depth:+"$depth"} || exit
                (
                        sanitize_submodule_env
                        cd "$sm_path" &&
@@ -264,17 +300,31 @@ or you are unsure what this means choose another name with the '--name' option."
        fi
        git config submodule."$sm_name".url "$realrepo"
 
-       git add $force "$sm_path" ||
+       git add --no-warn-embedded-repo $force "$sm_path" ||
        die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 
-       git config -f .gitmodules submodule."$sm_name".path "$sm_path" &&
-       git config -f .gitmodules submodule."$sm_name".url "$repo" &&
+       git submodule--helper config submodule."$sm_name".path "$sm_path" &&
+       git submodule--helper config submodule."$sm_name".url "$repo" &&
        if test -n "$branch"
        then
-               git config -f .gitmodules submodule."$sm_name".branch "$branch"
+               git submodule--helper config submodule."$sm_name".branch "$branch"
        fi &&
        git add --force .gitmodules ||
        die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
+
+       # NEEDSWORK: In a multi-working-tree world, this needs to be
+       # set in the per-worktree config.
+       if git config --get submodule.active >/dev/null
+       then
+               # If the submodule being adding isn't already covered by the
+               # current configured pathspec, set the submodule's active flag
+               if ! git submodule--helper is-active "$sm_path"
+               then
+                       git config submodule."$sm_name".active "true"
+               fi
+       else
+               git config submodule."$sm_name".active "true"
+       fi
 }
 
 #
@@ -305,45 +355,7 @@ cmd_foreach()
                shift
        done
 
-       toplevel=$(pwd)
-
-       # dup stdin so that it can be restored when running the external
-       # command in the subshell (and a recursive call to this function)
-       exec 3<&0
-
-       {
-               git submodule--helper list --prefix "$wt_prefix" ||
-               echo "#unmatched" $?
-       } |
-       while read mode sha1 stage sm_path
-       do
-               die_if_unmatched "$mode" "$sha1"
-               if test -e "$sm_path"/.git
-               then
-                       displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
-                       say "$(eval_gettext "Entering '\$displaypath'")"
-                       name=$(git submodule--helper name "$sm_path")
-                       (
-                               prefix="$prefix$sm_path/"
-                               sanitize_submodule_env
-                               cd "$sm_path" &&
-                               sm_path=$(git submodule--helper relative-path "$sm_path" "$wt_prefix") &&
-                               # we make $path available to scripts ...
-                               path=$sm_path &&
-                               if test $# -eq 1
-                               then
-                                       eval "$1"
-                               else
-                                       "$@"
-                               fi &&
-                               if test -n "$recursive"
-                               then
-                                       cmd_foreach "--recursive" "$@"
-                               fi
-                       ) <&3 3<&- ||
-                       die "$(eval_gettext "Stopping at '\$displaypath'; script returned non-zero status.")"
-               fi
-       done
+       git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper foreach ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
 }
 
 #
@@ -374,7 +386,7 @@ cmd_init()
                shift
        done
 
-       git ${wt_prefix:+-C "$wt_prefix"} submodule--helper init ${GIT_QUIET:+--quiet} ${prefix:+--prefix "$prefix"} "$@"
+       git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet} -- "$@"
 }
 
 #
@@ -410,60 +422,7 @@ cmd_deinit()
                shift
        done
 
-       if test -n "$deinit_all" && test "$#" -ne 0
-       then
-               echo >&2 "$(eval_gettext "pathspec and --all are incompatible")"
-               usage
-       fi
-       if test $# = 0 && test -z "$deinit_all"
-       then
-               die "$(eval_gettext "Use '--all' if you really want to deinitialize all submodules")"
-       fi
-
-       {
-               git submodule--helper list --prefix "$wt_prefix" "$@" ||
-               echo "#unmatched" $?
-       } |
-       while read mode sha1 stage sm_path
-       do
-               die_if_unmatched "$mode" "$sha1"
-               name=$(git submodule--helper name "$sm_path") || exit
-
-               displaypath=$(git submodule--helper relative-path "$sm_path" "$wt_prefix")
-
-               # Remove the submodule work tree (unless the user already did it)
-               if test -d "$sm_path"
-               then
-                       # Protect submodules containing a .git directory
-                       if test -d "$sm_path/.git"
-                       then
-                               die "$(eval_gettext "\
-Submodule work tree '\$displaypath' contains a .git directory
-(use 'rm -rf' if you really want to remove it including all of its history)")"
-                       fi
-
-                       if test -z "$force"
-                       then
-                               git rm -qn "$sm_path" ||
-                               die "$(eval_gettext "Submodule work tree '\$displaypath' contains local modifications; use '-f' to discard them")"
-                       fi
-                       rm -rf "$sm_path" &&
-                       say "$(eval_gettext "Cleared directory '\$displaypath'")" ||
-                       say "$(eval_gettext "Could not remove submodule work tree '\$displaypath'")"
-               fi
-
-               mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$displaypath'")"
-
-               # Remove the .git/config entries (unless the user already did it)
-               if test -n "$(git config --get-regexp submodule."$name\.")"
-               then
-                       # Remove the whole section so we have a clean state when
-                       # the user later decides to init this submodule again
-                       url=$(git config submodule."$name".url)
-                       git config --remove-section submodule."$name" 2>/dev/null &&
-                       say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$displaypath'")"
-               fi
-       done
+       git ${wt_prefix:+-C "$wt_prefix"} submodule--helper deinit ${GIT_QUIET:+--quiet} ${prefix:+--prefix "$prefix"} ${force:+--force} ${deinit_all:+--all} -- "$@"
 }
 
 is_tip_reachable () (
@@ -499,12 +458,19 @@ cmd_update()
                -q|--quiet)
                        GIT_QUIET=1
                        ;;
+               -v)
+                       GIT_QUIET=0
+                       ;;
                --progress)
-                       progress="--progress"
+                       progress=1
                        ;;
                -i|--init)
                        init=1
                        ;;
+               --require-init)
+                       init=1
+                       require_init=1
+                       ;;
                --remote)
                        remote=1
                        ;;
@@ -525,6 +491,9 @@ cmd_update()
                --reference=*)
                        reference="$1"
                        ;;
+               --dissociate)
+                       dissociate=1
+                       ;;
                -m|--merge)
                        update="merge"
                        ;;
@@ -577,40 +546,33 @@ cmd_update()
 
        {
        git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
-               ${progress:+"$progress"} \
+               ${progress:+"--progress"} \
                ${wt_prefix:+--prefix "$wt_prefix"} \
                ${prefix:+--recursive-prefix "$prefix"} \
                ${update:+--update "$update"} \
                ${reference:+"$reference"} \
+               ${dissociate:+"--dissociate"} \
                ${depth:+--depth "$depth"} \
-               ${recommend_shallow:+"$recommend_shallow"} \
-               ${jobs:+$jobs} \
+               ${require_init:+--require-init} \
+               $recommend_shallow \
+               $jobs \
+               -- \
                "$@" || echo "#unmatched" $?
        } | {
        err=
-       while read mode sha1 stage just_cloned sm_path
+       while read -r quickabort sha1 just_cloned sm_path
        do
-               die_if_unmatched "$mode" "$sha1"
+               die_if_unmatched "$quickabort" "$sha1"
 
-               name=$(git submodule--helper name "$sm_path") || exit
-               url=$(git config submodule."$name".url)
-               if ! test -z "$update"
-               then
-                       update_module=$update
-               else
-                       update_module=$(git config submodule."$name".update)
-                       if test -z "$update_module"
-                       then
-                               update_module="checkout"
-                       fi
-               fi
+               git submodule--helper ensure-core-worktree "$sm_path" || exit 1
+
+               update_module=$(git submodule--helper update-module-mode $just_cloned "$sm_path" $update)
 
                displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 
                if test $just_cloned -eq 1
                then
                        subsha1=
-                       update_module=checkout
                else
                        subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
                                git rev-parse --verify HEAD) ||
@@ -647,7 +609,7 @@ cmd_update()
                                # is not reachable from a ref.
                                is_tip_reachable "$sm_path" "$sha1" ||
                                fetch_in_submodule "$sm_path" $depth ||
-                               die "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'")"
+                               say "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'; trying to directly fetch \$sha1:")"
 
                                # Now we tried the usual fetch, but $sha1 may
                                # not be reachable from any of the refs
@@ -682,7 +644,7 @@ cmd_update()
                                must_die_on_failure=yes
                                ;;
                        *)
-                               die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
+                               die "$(eval_gettext "Invalid update mode '$update_module' for submodule path '$path'")"
                        esac
 
                        if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
@@ -738,18 +700,72 @@ cmd_update()
        }
 }
 
-set_name_rev () {
-       revname=$( (
-               sanitize_submodule_env
-               cd "$1" && {
-                       git describe "$2" 2>/dev/null ||
-                       git describe --tags "$2" 2>/dev/null ||
-                       git describe --contains "$2" 2>/dev/null ||
-                       git describe --all --always "$2"
-               }
-       ) )
-       test -z "$revname" || revname=" ($revname)"
+#
+# Configures a submodule's default branch
+#
+# $@ = requested path
+#
+cmd_set_branch() {
+       unset_branch=false
+       branch=
+
+       while test $# -ne 0
+       do
+               case "$1" in
+               -q|--quiet)
+                       # we don't do anything with this but we need to accept it
+                       ;;
+               -d|--default)
+                       unset_branch=true
+                       ;;
+               -b|--branch)
+                       case "$2" in '') usage ;; esac
+                       branch=$2
+                       shift
+                       ;;
+               --)
+                       shift
+                       break
+                       ;;
+               -*)
+                       usage
+                       ;;
+               *)
+                       break
+                       ;;
+               esac
+               shift
+       done
+
+       if test $# -ne 1
+       then
+               usage
+       fi
+
+       # we can't use `git submodule--helper name` here because internally, it
+       # hashes the path so a trailing slash could lead to an unintentional no match
+       name="$(git submodule--helper list "$1" | cut -f2)"
+       if test -z "$name"
+       then
+               exit 1
+       fi
+
+       test -n "$branch"; has_branch=$?
+       test "$unset_branch" = true; has_unset_branch=$?
+
+       if test $((!$has_branch != !$has_unset_branch)) -eq 0
+       then
+               usage
+       fi
+
+       if test $has_branch -eq 0
+       then
+               git submodule--helper config submodule."$name".branch "$branch"
+       else
+               git submodule--helper config --unset submodule."$name".branch
+       fi
 }
+
 #
 # Show commit summary for submodules in index or working tree
 #
@@ -827,7 +843,7 @@ cmd_summary() {
        # Get modified modules cared by user
        modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
                sane_egrep '^:([0-7]* )?160000' |
-               while read mod_src mod_dst sha1_src sha1_dst status sm_path
+               while read -r mod_src mod_dst sha1_src sha1_dst status sm_path
                do
                        # Always show modules deleted or type-changed (blob<->module)
                        if test "$status" = D || test "$status" = T
@@ -843,7 +859,7 @@ cmd_summary() {
                                test $status != A && test $ignore_config = all && continue
                        fi
                        # Also show added or modified modules which are checked out
-                       GIT_DIR="$sm_path/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
+                       GIT_DIR="$sm_path/.git" git rev-parse --git-dir >/dev/null 2>&1 &&
                        printf '%s\n' "$sm_path"
                done
        )
@@ -853,10 +869,10 @@ cmd_summary() {
        git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
        sane_egrep '^:([0-7]* )?160000' |
        cut -c2- |
-       while read mod_src mod_dst sha1_src sha1_dst status name
+       while read -r mod_src mod_dst sha1_src sha1_dst status name
        do
                if test -z "$cached" &&
-                       test $sha1_dst = 0000000000000000000000000000000000000000
+                       is_zero_oid $sha1_dst
                then
                        case "$mod_dst" in
                        160000)
@@ -877,11 +893,11 @@ cmd_summary() {
                missing_dst=
 
                test $mod_src = 160000 &&
-               ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
+               ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_src^0 >/dev/null &&
                missing_src=t
 
                test $mod_dst = 160000 &&
-               ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
+               ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_dst^0 >/dev/null &&
                missing_dst=t
 
                display_name=$(git submodule--helper relative-path "$name" "$wt_prefix")
@@ -916,8 +932,11 @@ cmd_summary() {
                        ;;
                esac
 
-               sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
-               sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
+               sha1_abbr_src=$(GIT_DIR="$name/.git" git rev-parse --short $sha1_src 2>/dev/null ||
+                       echo $sha1_src | cut -c1-7)
+               sha1_abbr_dst=$(GIT_DIR="$name/.git" git rev-parse --short $sha1_dst 2>/dev/null ||
+                       echo $sha1_dst | cut -c1-7)
+
                if test $status = T
                then
                        blob="$(gettext "blob")"
@@ -996,55 +1015,7 @@ cmd_status()
                shift
        done
 
-       {
-               git submodule--helper list --prefix "$wt_prefix" "$@" ||
-               echo "#unmatched" $?
-       } |
-       while read mode sha1 stage sm_path
-       do
-               die_if_unmatched "$mode" "$sha1"
-               name=$(git submodule--helper name "$sm_path") || exit
-               url=$(git config submodule."$name".url)
-               displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
-               if test "$stage" = U
-               then
-                       say "U$sha1 $displaypath"
-                       continue
-               fi
-               if test -z "$url" ||
-               {
-                       ! test -d "$sm_path"/.git &&
-                       ! test -f "$sm_path"/.git
-               }
-               then
-                       say "-$sha1 $displaypath"
-                       continue;
-               fi
-               if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
-               then
-                       set_name_rev "$sm_path" "$sha1"
-                       say " $sha1 $displaypath$revname"
-               else
-                       if test -z "$cached"
-                       then
-                               sha1=$(sanitize_submodule_env; cd "$sm_path" && git rev-parse --verify HEAD)
-                       fi
-                       set_name_rev "$sm_path" "$sha1"
-                       say "+$sha1 $displaypath$revname"
-               fi
-
-               if test -n "$recursive"
-               then
-                       (
-                               prefix="$displaypath/"
-                               sanitize_submodule_env
-                               wt_prefix=
-                               cd "$sm_path" &&
-                               eval cmd_status
-                       ) ||
-                       die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
-               fi
-       done
+       git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper status ${GIT_QUIET:+--quiet} ${cached:+--cached} ${recursive:+--recursive} -- "$@"
 }
 #
 # Sync remote urls for submodules
@@ -1076,59 +1047,13 @@ cmd_sync()
                        ;;
                esac
        done
-       cd_to_toplevel
-       {
-               git submodule--helper list --prefix "$wt_prefix" "$@" ||
-               echo "#unmatched" $?
-       } |
-       while read mode sha1 stage sm_path
-       do
-               die_if_unmatched "$mode" "$sha1"
-               name=$(git submodule--helper name "$sm_path")
-               url=$(git config -f .gitmodules --get submodule."$name".url)
-
-               # Possibly a url relative to parent
-               case "$url" in
-               ./*|../*)
-                       # rewrite foo/bar as ../.. to find path from
-                       # submodule work tree to superproject work tree
-                       up_path="$(printf '%s\n' "$sm_path" | sed "s/[^/][^/]*/../g")" &&
-                       # guarantee a trailing /
-                       up_path=${up_path%/}/ &&
-                       # path from submodule work tree to submodule origin repo
-                       sub_origin_url=$(git submodule--helper resolve-relative-url "$url" "$up_path") &&
-                       # path from superproject work tree to submodule origin repo
-                       super_config_url=$(git submodule--helper resolve-relative-url "$url") || exit
-                       ;;
-               *)
-                       sub_origin_url="$url"
-                       super_config_url="$url"
-                       ;;
-               esac
-
-               if git config "submodule.$name.url" >/dev/null 2>/dev/null
-               then
-                       displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
-                       say "$(eval_gettext "Synchronizing submodule url for '\$displaypath'")"
-                       git config submodule."$name".url "$super_config_url"
 
-                       if test -e "$sm_path"/.git
-                       then
-                       (
-                               sanitize_submodule_env
-                               cd "$sm_path"
-                               remote=$(get_default_remote)
-                               git config remote."$remote".url "$sub_origin_url"
+       git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper sync ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
+}
 
-                               if test -n "$recursive"
-                               then
-                                       prefix="$prefix$sm_path/"
-                                       eval cmd_sync
-                               fi
-                       )
-                       fi
-               fi
-       done
+cmd_absorbgitdirs()
+{
+       git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
 }
 
 # This loop parses the command line arguments to find the
@@ -1140,7 +1065,7 @@ cmd_sync()
 while test $# != 0 && test -z "$command"
 do
        case "$1" in
-       add | foreach | init | deinit | update | status | summary | sync)
+       add | foreach | init | deinit | update | set-branch | status | summary | sync | absorbgitdirs)
                command=$1
                ;;
        -q|--quiet)
@@ -1181,8 +1106,8 @@ then
     fi
 fi
 
-# "-b branch" is accepted only by "add"
-if test -n "$branch" && test "$command" != add
+# "-b branch" is accepted only by "add" and "set-branch"
+if test -n "$branch" && (test "$command" != add || test "$command" != set-branch)
 then
        usage
 fi
@@ -1193,4 +1118,4 @@ then
        usage
 fi
 
-"cmd_$command" "$@"
+"cmd_$(echo $command | sed -e s/-/_/g)" "$@"