fetch: Speed up fetch of large numbers of refs

diff --git a/git-stash.sh b/git-stash.sh
index d61c9d03bc216cc2f1ab004fe3ffba42ef121a68..4febbbfa5d13b241e9bfcc479c6767a90bd12919 100755 (executable)
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -7,7 +7,7 @@ USAGE="list [<options>]
    or: $dashless drop [-q|--quiet] [<stash>]
    or: $dashless ( pop | apply ) [--index] [-q|--quiet] [<stash>]
    or: $dashless branch <branchname> [<stash>]
-   or: $dashless [save [--keep-index] [-q|--quiet] [<message>]]
+   or: $dashless [save [-k|--keep-index] [-q|--quiet] [<message>]]
    or: $dashless clear"
 
 SUBDIRECTORY_OK=Yes
@@ -21,6 +21,14 @@ trap 'rm -f "$TMP-*"' 0
 
 ref_stash=refs/stash
 
+if git config --get-colorbool color.interactive; then
+       help_color="$(git config --get-color color.interactive.help 'red bold')"
+       reset_color="$(git config --get-color '' reset)"
+else
+       help_color=
+       reset_color=
+fi
+
 no_changes () {
        git diff-index --quiet --cached HEAD --ignore-submodules -- &&
        git diff-files --quiet --ignore-submodules
@@ -68,19 +76,44 @@ create_stash () {
                git commit-tree $i_tree -p $b_commit) ||
                die "Cannot save the current index state"
 
-       # state of the working tree
-       w_tree=$( (
+       if test -z "$patch_mode"
+       then
+
+               # state of the working tree
+               w_tree=$( (
+                       rm -f "$TMP-index" &&
+                       cp -p ${GIT_INDEX_FILE-"$GIT_DIR/index"} "$TMP-index" &&
+                       GIT_INDEX_FILE="$TMP-index" &&
+                       export GIT_INDEX_FILE &&
+                       git read-tree -m $i_tree &&
+                       git add -u &&
+                       git write-tree &&
+                       rm -f "$TMP-index"
+               ) ) ||
+                       die "Cannot save the current worktree state"
+
+       else
+
                rm -f "$TMP-index" &&
-               cp -p ${GIT_INDEX_FILE-"$GIT_DIR/index"} "$TMP-index" &&
-               GIT_INDEX_FILE="$TMP-index" &&
-               export GIT_INDEX_FILE &&
-               git read-tree -m $i_tree &&
-               git add -u &&
-               git write-tree &&
-               rm -f "$TMP-index"
-       ) ) ||
+               GIT_INDEX_FILE="$TMP-index" git read-tree HEAD &&
+
+               # find out what the user wants
+               GIT_INDEX_FILE="$TMP-index" \
+                       git add--interactive --patch=stash -- &&
+
+               # state of the working tree
+               w_tree=$(GIT_INDEX_FILE="$TMP-index" git write-tree) ||
                die "Cannot save the current worktree state"
 
+               git diff-tree -p HEAD $w_tree > "$TMP-patch" &&
+               test -s "$TMP-patch" ||
+               die "No changes selected"
+
+               rm -f "$TMP-index" ||
+               die "Cannot remove temporary index (can't happen)"
+
+       fi
+
        # create the stash
        if test -z "$stash_msg"
        then
@@ -95,15 +128,31 @@ create_stash () {
 
 save_stash () {
        keep_index=
+       patch_mode=
        while test $# != 0
        do
                case "$1" in
-               --keep-index)
+               -k|--keep-index)
+                       keep_index=t
+                       ;;
+               --no-keep-index)
+                       keep_index=
+                       ;;
+               -p|--patch)
+                       patch_mode=t
                        keep_index=t
                        ;;
                -q|--quiet)
                        GIT_QUIET=t
                        ;;
+               --)
+                       shift
+                       break
+                       ;;
+               -*)
+                       echo "error: unknown option for 'stash save': $1"
+                       usage
+                       ;;
                *)
                        break
                        ;;
@@ -131,11 +180,22 @@ save_stash () {
                die "Cannot save the current status"
        say Saved working directory and index state "$stash_msg"
 
-       git reset --hard ${GIT_QUIET:+-q}
-
-       if test -n "$keep_index" && test -n $i_tree
+       if test -z "$patch_mode"
        then
-               git read-tree --reset -u $i_tree
+               git reset --hard ${GIT_QUIET:+-q}
+
+               if test -n "$keep_index" && test -n $i_tree
+               then
+                       git read-tree --reset -u $i_tree
+               fi
+       else
+               git apply -R < "$TMP-patch" ||
+               die "Cannot remove worktree changes"
+
+               if test -z "$keep_index"
+               then
+                       git reset
+               fi
        fi
 }
 
@@ -307,6 +367,18 @@ apply_to_branch () {
        drop_stash $stash
 }
 
+# The default command is "save" if nothing but options are given
+seen_non_option=
+for opt
+do
+       case "$opt" in
+       -*) ;;
+       *) seen_non_option=t; break ;;
+       esac
+done
+
+test -n "$seen_non_option" || set "save" "$@"
+
 # Main command set
 case "$1" in
 list)
@@ -358,12 +430,13 @@ branch)
        apply_to_branch "$@"
        ;;
 *)
-       if test $# -eq 0
-       then
+       case $# in
+       0)
                save_stash &&
                say '(To restore them type "git stash apply")'
-       else
+               ;;
+       *)
                usage
-       fi
+       esac
        ;;
 esac