Revert "git stash: avoid data loss when "git stash save" kills a directory"

This reverts commit a73653130e, as it
has been reported that "ls-files --killed" is too time-consuming in
a deep directory with too many untracked crufts (e.g. $HOME/.git
tracking only a few files).

We'd need to revisit it later but "ls-files --killed" needs to be
optimized before it happens.

Documentation/git-stash.txt

@@ -14,8 +14,7 @@ SYNOPSIS
 'git stash' ( pop | apply ) [--index] [-q|--quiet] [<stash>]
 'git stash' branch <branchname> [<stash>]
 'git stash' [save [-p|--patch] [-k|--[no-]keep-index] [-q|--quiet]
-	     [-u|--include-untracked] [-a|--all] [-f|--force]
-	     [<message>]]
+	     [-u|--include-untracked] [-a|--all] [<message>]]
 'git stash' clear
 'git stash' create [<message>]
 'git stash' store [-m|--message <message>] [-q|--quiet] <commit>
@@ -45,7 +44,7 @@ is also possible).
 OPTIONS
 -------
 
-save [-p|--patch] [--[no-]keep-index] [-u|--include-untracked] [-a|--all] [-q|--quiet] [-f|--force] [<message>]::
+save [-p|--patch] [--[no-]keep-index] [-u|--include-untracked] [-a|--all] [-q|--quiet] [<message>]::
 
 	Save your local modifications to a new 'stash', and run `git reset
 	--hard` to revert them.  The <message> part is optional and gives
@@ -72,13 +71,6 @@ linkgit:git-add[1] to learn how to operate the `--patch` mode.
 +
 The `--patch` option implies `--keep-index`.  You can use
 `--no-keep-index` to override this.
-+
-In some cases, saving a stash could mean irretrievably removing some
-data - if a directory with untracked files replaces a tracked file of
-the same name, the new untracked files are not saved (except in case
-of `--include-untracked`) but the original tracked file shall be restored.
-By default, `stash save` will abort in such a case; `--force` will allow
-it to remove the untracked files.
 
 list [<options>]::
 

git-stash.sh

@@ -195,7 +195,6 @@ save_stash () {
 	keep_index=
 	patch_mode=
 	untracked=
-	force=
 	while test $# != 0
 	do
 		case "$1" in
@@ -216,9 +215,6 @@ save_stash () {
 		-u|--include-untracked)
 			untracked=untracked
 			;;
-		-f|--force)
-			force=t
-			;;
 		-a|--all)
 			untracked=all
 			;;
@@ -262,14 +258,6 @@ save_stash () {
 		say "$(gettext "No local changes to save")"
 		exit 0
 	fi
-	if test -z "$untracked$force" &&
-	   test -n "$(git ls-files --killed | head -n 1)"
-	then
-		say "$(gettext "The following untracked files would NOT be saved but need to be removed by stash save:")"
-		test -n "$GIT_QUIET" || git ls-files --killed | sed 's/^/\t/'
-		say "$(gettext "Aborting. Consider using either the --force or --include-untracked option.")" >&2
-		exit 1
-	fi
 	test -f "$GIT_DIR/logs/$ref_stash" ||
 		clear_stash || die "$(gettext "Cannot initialize stash")"
 

t/t3903-stash.sh

@@ -673,22 +673,4 @@ test_expect_success 'store updates stash ref and reflog' '
 	grep quux bazzy
 '
 
-test_expect_success 'stash a change to turn a non-directory to a directory' '
-	git reset --hard &&
-	>testfile &&
-	git add testfile &&
-	git commit -m "add testfile as a regular file" &&
-	rm testfile &&
-	mkdir testfile &&
-	>testfile/file &&
-	test_must_fail git stash save "recover regular file" &&
-	test -f testfile/file
-'
-
-test_expect_success 'stash a change to turn a non-directory to a directory (forced)' '
-	git stash save --force "recover regular file (forced)" &&
-	! test -f testfile/file &&
-	test -f testfile
-'
-
 test_done