From ec0603e13c4e33c3a1501fe16f576db9aff1701a Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Thu, 12 Jul 2007 01:04:16 -0700 Subject: [PATCH] Teach read-tree 2-way merge to ignore intermediate symlinks Earlier in 16a4c61, we taught "read-tree -m -u" not to be confused when switching from a branch that has a path frotz/filfre to another branch that has a symlink frotz that points at xyzzy/ directory. The fix was incomplete in that it was still confused when coming back (i.e. switching from a branch with frotz -> xyzzy/ to another branch with frotz/filfre). This fix is rather expensive in that for a path that is created we would need to see if any of the leading component of that path exists as a symbolic link in the filesystem (in which case, we know that path itself does not exist, and the fact we already decided to check it out tells us that in the index we already know that symbolic link is going away as there is no D/F conflict). Signed-off-by: Junio C Hamano --- t/t2007-checkout-symlink.sh | 50 +++++++++++++++++++++++++++++++++++++ unpack-trees.c | 3 +++ 2 files changed, 53 insertions(+) create mode 100755 t/t2007-checkout-symlink.sh diff --git a/t/t2007-checkout-symlink.sh b/t/t2007-checkout-symlink.sh new file mode 100755 index 000000000..0526fce16 --- /dev/null +++ b/t/t2007-checkout-symlink.sh @@ -0,0 +1,50 @@ +#!/bin/sh +# +# Copyright (c) 2007 Junio C Hamano + +test_description='git checkout to switch between branches with symlink<->dir' + +. ./test-lib.sh + +test_expect_success setup ' + + mkdir frotz && + echo hello >frotz/filfre && + git add frotz/filfre && + test_tick && + git commit -m "master has file frotz/filfre" && + + git branch side && + + echo goodbye >nitfol && + git add nitfol + test_tick && + git commit -m "master adds file nitfol" && + + git checkout side && + + git rm --cached frotz/filfre && + mv frotz xyzzy && + ln -s xyzzy frotz && + git add xyzzy/filfre frotz && + test_tick && + git commit -m "side moves frotz/ to xyzzy/ and adds frotz->xyzzy/" + +' + +test_expect_success 'switch from symlink to dir' ' + + git checkout master + +' + +rm -fr frotz xyzzy nitfol && +git checkout -f master || exit + +test_expect_success 'switch from dir to symlink' ' + + git checkout side + +' + +test_done diff --git a/unpack-trees.c b/unpack-trees.c index cac2411b9..89dd279f8 100644 --- a/unpack-trees.c +++ b/unpack-trees.c @@ -495,6 +495,9 @@ static void verify_absent(const char *path, const char *action, if (o->index_only || o->reset || !o->update) return; + if (has_symlink_leading_path(path, NULL)) + return; + if (!lstat(path, &st)) { int cnt; -- 2.26.2