t0001: drop useless subshells

diff --git a/git-submodule.sh b/git-submodule.sh
index 66f5f752c5fb6745ab409199deb775c4704ab3e6..4a30087768a16d77bfcec41889f58b64fdf5f89c 100755 (executable)
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -156,7 +156,7 @@ module_list()
                git ls-files -z --error-unmatch --stage -- "$@" ||
                echo "unmatched pathspec exists"
        ) |
-       perl -e '
+       @@PERL@@ -e '
        my %unmerged = ();
        my ($null_sha1) = ("0" x 40);
        my @out = ();
@@ -545,7 +545,12 @@ cmd_foreach()
                                sm_path=$(relative_path "$sm_path") &&
                                # we make $path available to scripts ...
                                path=$sm_path &&
-                               eval "$@" &&
+                               if test $# -eq 1
+                               then
+                                       eval "$1"
+                               else
+                                       "$@"
+                               fi &&
                                if test -n "$recursive"
                                then
                                        cmd_foreach "--recursive" "$@"
@@ -617,7 +622,7 @@ cmd_init()
                   test -z "$(git config submodule."$name".update)"
                then
                        case "$upd" in
-                       rebase | merge | none)
+                       checkout | rebase | merge | none)
                                ;; # known modes of updating
                        *)
                                echo >&2 "warning: unknown update mode '$upd' suggested for submodule '$name'"
@@ -716,7 +721,6 @@ cmd_deinit()
 cmd_update()
 {
        # parse $args after "submodule ... update".
-       orig_flags=
        while test $# -ne 0
        do
                case "$1" in
@@ -741,7 +745,6 @@ cmd_update()
                --reference)
                        case "$2" in '') usage ;; esac
                        reference="--reference=$2"
-                       orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
                        shift
                        ;;
                --reference=*)
@@ -775,7 +778,6 @@ cmd_update()
                        break
                        ;;
                esac
-               orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
                shift
        done
 
@@ -803,6 +805,17 @@ cmd_update()
                        update_module=$update
                else
                        update_module=$(git config submodule."$name".update)
+                       case "$update_module" in
+                       '')
+                               ;; # Unset update mode
+                       checkout | rebase | merge | none)
+                               ;; # Known update modes
+                       !*)
+                               ;; # Custom update command
+                       *)
+                               die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
+                               ;;
+                       esac
                fi
 
                displaypath=$(relative_path "$prefix$sm_path")
@@ -919,7 +932,7 @@ Maybe you want to use 'update --init'?")"
                                prefix="$prefix$sm_path/"
                                clear_local_git_env
                                cd "$sm_path" &&
-                               eval cmd_update "$orig_flags"
+                               eval cmd_update
                        )
                        res=$?
                        if test $res -gt 0