print errno when reporting a system call error

diff --git a/git-submodule.sh b/git-submodule.sh
index 136e26a2c8d4ca1e835e2873f3fd994864dc135e..c0d0e9a4c63495d4522666b6edf984c01c0cfa23 100755 (executable)
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -278,6 +278,20 @@ or you are unsure what this means choose another name with the '--name' option."
        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
 }
 
 #
@@ -318,7 +332,7 @@ cmd_foreach()
                git submodule--helper list --prefix "$wt_prefix" ||
                echo "#unmatched" $?
        } |
-       while read mode sha1 stage sm_path
+       while read -r mode sha1 stage sm_path
        do
                die_if_unmatched "$mode" "$sha1"
                if test -e "$sm_path"/.git
@@ -427,7 +441,7 @@ cmd_deinit()
                git submodule--helper list --prefix "$wt_prefix" "$@" ||
                echo "#unmatched" $?
        } |
-       while read mode sha1 stage sm_path
+       while read -r mode sha1 stage sm_path
        do
                die_if_unmatched "$mode" "$sha1"
                name=$(git submodule--helper name "$sm_path") || exit
@@ -591,7 +605,7 @@ cmd_update()
                "$@" || echo "#unmatched" $?
        } | {
        err=
-       while read mode sha1 stage just_cloned sm_path
+       while read -r mode sha1 stage just_cloned sm_path
        do
                die_if_unmatched "$mode" "$sha1"
 
@@ -833,7 +847,7 @@ 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
@@ -859,7 +873,7 @@ 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 $sha1_dst = 0000000000000000000000000000000000000000
@@ -1006,18 +1020,17 @@ cmd_status()
                git submodule--helper list --prefix "$wt_prefix" "$@" ||
                echo "#unmatched" $?
        } |
-       while read mode sha1 stage sm_path
+       while read -r mode sha1 stage sm_path
        do
                die_if_unmatched "$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" ||
+               if ! git submodule--helper is-active "$sm_path" ||
                {
                        ! test -d "$sm_path"/.git &&
                        ! test -f "$sm_path"/.git
@@ -1087,9 +1100,16 @@ cmd_sync()
                git submodule--helper list --prefix "$wt_prefix" "$@" ||
                echo "#unmatched" $?
        } |
-       while read mode sha1 stage sm_path
+       while read -r mode sha1 stage sm_path
        do
                die_if_unmatched "$mode" "$sha1"
+
+               # skip inactive submodules
+               if ! git submodule--helper is-active "$sm_path"
+               then
+                       continue
+               fi
+
                name=$(git submodule--helper name "$sm_path")
                url=$(git config -f .gitmodules --get submodule."$name".url)
 
@@ -1112,27 +1132,24 @@ cmd_sync()
                        ;;
                esac
 
-               if git config "submodule.$name.url" >/dev/null 2>/dev/null
+               displaypath=$(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 "$sm_path"/.git
                then
-                       displaypath=$(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"
+               (
+                       sanitize_submodule_env
+                       cd "$sm_path"
+                       remote=$(get_default_remote)
+                       git config remote."$remote".url "$sub_origin_url"
 
-                       if test -e "$sm_path"/.git
+                       if test -n "$recursive"
                        then
-                       (
-                               sanitize_submodule_env
-                               cd "$sm_path"
-                               remote=$(get_default_remote)
-                               git config remote."$remote".url "$sub_origin_url"
-
-                               if test -n "$recursive"
-                               then
-                                       prefix="$prefix$sm_path/"
-                                       eval cmd_sync
-                               fi
-                       )
+                               prefix="$prefix$sm_path/"
+                               eval cmd_sync
                        fi
+               )
                fi
        done
 }