interpret_branch_name(): handle auto-namelen for @{-1}

diff --git a/t/t3700-add.sh b/t/t3700-add.sh
index 2978cb9d640d1e826e8fb9b96e99bc69ee86f09d..f3a4b4a913f344ce140344ec7b70482a6d36bcbe 100755 (executable)
--- a/t/t3700-add.sh
+++ b/t/t3700-add.sh
@@ -331,6 +331,11 @@ test_expect_success 'git add --dry-run --ignore-missing of non-existing file out
        test_i18ncmp expect.err actual.err
 '
 
+test_expect_success 'git add empty string should invoke warning' '
+       git add "" 2>output &&
+       test_i18ngrep "warning: empty strings" output
+'
+
 test_expect_success 'git add --chmod=[+-]x stages correctly' '
        rm -f foo1 &&
        echo foo >foo1 &&
@@ -349,4 +354,53 @@ test_expect_success POSIXPERM,SYMLINKS 'git add --chmod=+x with symlinks' '
        test_mode_in_index 100755 foo2
 '
 
+test_expect_success 'git add --chmod=[+-]x changes index with already added file' '
+       rm -f foo3 xfoo3 &&
+       echo foo >foo3 &&
+       git add foo3 &&
+       git add --chmod=+x foo3 &&
+       test_mode_in_index 100755 foo3 &&
+       echo foo >xfoo3 &&
+       chmod 755 xfoo3 &&
+       git add xfoo3 &&
+       git add --chmod=-x xfoo3 &&
+       test_mode_in_index 100644 xfoo3
+'
+
+test_expect_success POSIXPERM 'git add --chmod=[+-]x does not change the working tree' '
+       echo foo >foo4 &&
+       git add foo4 &&
+       git add --chmod=+x foo4 &&
+       ! test -x foo4
+'
+
+test_expect_success 'no file status change if no pathspec is given' '
+       >foo5 &&
+       >foo6 &&
+       git add foo5 foo6 &&
+       git add --chmod=+x &&
+       test_mode_in_index 100644 foo5 &&
+       test_mode_in_index 100644 foo6
+'
+
+test_expect_success 'no file status change if no pathspec is given in subdir' '
+       mkdir -p sub &&
+       (
+               cd sub &&
+               >sub-foo1 &&
+               >sub-foo2 &&
+               git add . &&
+               git add --chmod=+x &&
+               test_mode_in_index 100644 sub-foo1 &&
+               test_mode_in_index 100644 sub-foo2
+       )
+'
+
+test_expect_success 'all statuses changed in folder if . is given' '
+       git add --chmod=+x . &&
+       test $(git ls-files --stage | grep ^100644 | wc -l) -eq 0 &&
+       git add --chmod=-x . &&
+       test $(git ls-files --stage | grep ^100755 | wc -l) -eq 0
+'
+
 test_done