Merge branch 'jc/maint-apply-no-double-patch'

diff --git a/t/t7607-merge-overwrite.sh b/t/t7607-merge-overwrite.sh
index 9137866e1a7d0dfed7dd55f089a0c3ecd420237c..5f731a1177267e76f19dbe1605a4d0f2e8e749bd 100755 (executable)
--- a/t/t7607-merge-overwrite.sh
+++ b/t/t7607-merge-overwrite.sh
@@ -140,4 +140,36 @@ test_expect_success SYMLINKS 'will not be confused by symlink in leading path' '
        git checkout sub
 '
 
+cat >expect <<\EOF
+error: Untracked working tree file 'c0.c' would be overwritten by merge.
+fatal: read-tree failed
+EOF
+
+test_expect_success 'will not overwrite untracked file on unborn branch' '
+       git reset --hard c0 &&
+       git rm -fr . &&
+       git checkout --orphan new &&
+       cp important c0.c &&
+       test_must_fail git merge c0 2>out &&
+       test_cmp out expect &&
+       test_path_is_missing .git/MERGE_HEAD &&
+       test_cmp important c0.c
+'
+
+test_expect_success 'set up unborn branch and content' '
+       git symbolic-ref HEAD refs/heads/unborn &&
+       rm -f .git/index &&
+       echo foo > tracked-file &&
+       git add tracked-file &&
+       echo bar > untracked-file
+'
+
+test_expect_failure 'will not clobber WT/index when merging into unborn' '
+       git merge master &&
+       grep foo tracked-file &&
+       git show :tracked-file >expect &&
+       grep foo expect &&
+       grep bar untracked-file
+'
+
 test_done