add update 'none' flag to disable update of submodule by default

diff --git a/git-submodule.sh b/git-submodule.sh
index 87c9452c8a8ae179ffb7e7958ba95688e95bd0e9..34d2be6ef0a3373608ff8b89f59ed19043c59354 100755 (executable)
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -35,7 +35,7 @@ resolve_relative_url ()
 {
        remote=$(get_default_remote)
        remoteurl=$(git config "remote.$remote.url") ||
-               die "$(eval_gettext "remote (\$remote) does not have a url defined in .git/config")"
+               remoteurl=$(pwd) # the repository is its own authoritative upstream
        url="$1"
        remoteurl=${remoteurl%/}
        sep=/
@@ -122,12 +122,17 @@ module_clone()
        path=$1
        url=$2
        reference="$3"
+       quiet=
+       if test -n "$GIT_QUIET"
+       then
+               quiet=-q
+       fi
 
        if test -n "$reference"
        then
-               git-clone "$reference" -n "$url" "$path"
+               git-clone $quiet "$reference" -n "$url" "$path"
        else
-               git-clone -n "$url" "$path"
+               git-clone $quiet -n "$url" "$path"
        fi ||
        die "$(eval_gettext "Clone of '\$url' into submodule path '\$path' failed")"
 }
@@ -242,15 +247,6 @@ Use -f if you really want to add it." &&
                        die "$(eval_gettext "'\$path' already exists and is not a valid git repo")"
                fi
 
-               case "$repo" in
-               ./*|../*)
-                       url=$(resolve_relative_url "$repo") || exit
-                   ;;
-               *)
-                       url="$repo"
-                       ;;
-               esac
-               git config submodule."$path".url "$url"
        else
 
                module_clone "$path" "$realrepo" "$reference" || exit
@@ -264,6 +260,7 @@ Use -f if you really want to add it." &&
                        esac
                ) || die "$(eval_gettext "Unable to checkout submodule '\$path'")"
        fi
+       git config submodule."$path".url "$realrepo"
 
        git add $force "$path" ||
        die "$(eval_gettext "Failed to add submodule '\$path'")"
@@ -363,25 +360,26 @@ cmd_init()
        do
                # Skip already registered paths
                name=$(module_name "$path") || exit
-               url=$(git config submodule."$name".url)
-               test -z "$url" || continue
-
-               url=$(git config -f .gitmodules submodule."$name".url)
-               test -z "$url" &&
-               die "$(eval_gettext "No url found for submodule path '\$path' in .gitmodules")"
-
-               # Possibly a url relative to parent
-               case "$url" in
-               ./*|../*)
-                       url=$(resolve_relative_url "$url") || exit
-                       ;;
-               esac
-
-               git config submodule."$name".url "$url" ||
-               die "$(eval_gettext "Failed to register url for submodule path '\$path'")"
+               if test -z "$(git config "submodule.$name.url")"
+               then
+                       url=$(git config -f .gitmodules submodule."$name".url)
+                       test -z "$url" &&
+                       die "$(eval_gettext "No url found for submodule path '\$path' in .gitmodules")"
+
+                       # Possibly a url relative to parent
+                       case "$url" in
+                       ./*|../*)
+                               url=$(resolve_relative_url "$url") || exit
+                               ;;
+                       esac
+                       git config submodule."$name".url "$url" ||
+                       die "$(eval_gettext "Failed to register url for submodule path '\$path'")"
+               fi
 
+               # Copy "update" setting when it is not set yet
                upd="$(git config -f .gitmodules submodule."$name".update)"
                test -z "$upd" ||
+               test -n "$(git config submodule."$name".update)" ||
                git config submodule."$name".update "$upd" ||
                die "$(eval_gettext "Failed to register update mode for submodule path '\$path'")"
 
@@ -431,6 +429,9 @@ cmd_update()
                --recursive)
                        recursive=1
                        ;;
+               --checkout)
+                       update="checkout"
+                       ;;
                --)
                        shift
                        break
@@ -463,7 +464,19 @@ cmd_update()
                fi
                name=$(module_name "$path") || exit
                url=$(git config submodule."$name".url)
-               update_module=$(git config submodule."$name".update)
+               if ! test -z "$update"
+               then
+                       update_module=$update
+               else
+                       update_module=$(git config submodule."$name".update)
+               fi
+
+               if test "$update_module" = "none"
+               then
+                       echo "Skipping submodule '$path'"
+                       continue
+               fi
+
                if test -z "$url"
                then
                        # Only mention uninitialized submodules when its
@@ -485,11 +498,6 @@ Maybe you want to use 'update --init'?")"
                        die "$(eval_gettext "Unable to find current revision in submodule path '\$path'")"
                fi
 
-               if ! test -z "$update"
-               then
-                       update_module=$update
-               fi
-
                if test "$subsha1" != "$sha1"
                then
                        subforce=$force
@@ -925,17 +933,20 @@ cmd_sync()
                        ;;
                esac
 
-               say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
-               git config submodule."$name".url "$url"
-
-               if test -e "$path"/.git
+               if git config "submodule.$name.url" >/dev/null 2>/dev/null
                then
-               (
-                       clear_local_git_env
-                       cd "$path"
-                       remote=$(get_default_remote)
-                       git config remote."$remote".url "$url"
-               )
+                       say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
+                       git config submodule."$name".url "$url"
+
+                       if test -e "$path"/.git
+                       then
+                       (
+                               clear_local_git_env
+                               cd "$path"
+                               remote=$(get_default_remote)
+                               git config remote."$remote".url "$url"
+                       )
+                       fi
                fi
        done
 }