[PATCH] Allow git mv FileA fILEa when core.ignorecase = true
The typical use case is when a file "FileA" should be renamed into fILEa
and we are on a case insenstive file system (system core.ignorecase = true).
Source and destination are the same file, it can be accessed under both names.
This makes git think that the destination file exists.
Unless used with --forced, git will refuse the "git mv FileA fILEa".
This change will allow "git mv FileA fILEa", when core.ignorecase = true
and source and destination filenames only differ in case and the file length
is identical.
On Linux/Unix/Mac OS X the mv is allowed when the inode of the source and
destination are equal.
On this allows renames of MÄRCHEN into Märchen on Mac OS X.
(As a side effect, a file can be renamed to a name which is already
hard-linked to the same inode)Signed-off-by: Torsten Bögershausen <tboegi@web.de>
---
builtin/mv.c | 20 +++++++++++++++-----
t/t7001-mv.sh | 29 +++++++++++++++++++++++++++++
2 files changed, 44 insertions(+), 5 deletions(-)
diff --git a/builtin/mv.c b/builtin/mv.c
index 93e8995..e0aad62 100644
--- a/builtin/mv.c
+++ b/builtin/mv.c
@@ -62,7 +62,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
};
const char **source, **destination, **dest_path;
enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
- struct stat st;
+ struct stat st, st_dst;
struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
git_config(git_default_config, NULL);
@@ -164,15 +164,25 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
}
} else if (cache_name_pos(src, length) < 0)
bad = "not under version control";
- else if (lstat(dst, &st) == 0) {
+ else if (lstat(dst, &st_dst) == 0) {
+ int allow_force = force;
bad = "destination exists";
- if (force) {
+ /* Allow when src and dst have the same inode (Mac OS X) */
+ /* Allow when ignore_case and same file length (Windows) */
+ if (((st_dst.st_ino) && (st_dst.st_ino == st.st_ino)) ||
+ ((ignore_case) && !strcasecmp(src, dst) &&
+ (st.st_size == st_dst.st_size))) {
+ allow_force = 1;
+ bad = NULL;
+ }
+ if (allow_force) {
/*
* only files can overwrite each other:
* check both source and destination
*/
- if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
- warning("%s; will overwrite!", bad);
+ if (S_ISREG(st_dst.st_mode) || S_ISLNK(st_dst.st_mode)) {
+ if (bad)
+ warning("%s; will overwrite!", bad);
bad = NULL;
} else
bad = "Cannot overwrite";
diff --git a/t/t7001-mv.sh b/t/t7001-mv.sh
index a845b15..d0e73ee 100755
--- a/t/t7001-mv.sh
+++ b/t/t7001-mv.sh
@@ -255,4 +255,33 @@ test_expect_success SYMLINKS 'git mv should overwrite file with a symlink' '
rm -f moved symlink
+touch x
+if ln x y 2>/dev/null; then
+ hardlinks=1
+fi
+rm -f x y
+
+if test "$(git config --bool core.ignorecase)" = true -o "$hardlinks"; then
+ test_expect_success 'git mv FileA fILEa' '
+
+ rm -fr .git * &&
+ git init &&
+ echo FileA > FileA &&
+ git add FileA &&
+ git commit -m add FileA &&
+ {
+ if ! test -f fILEa; then
+ ln FileA fILEa
+ fi
+ } &&
+ git mv FileA fILEa &&
+ git commit -m "mv FileA fILEa" &&
+ rm -f FileA fILEa &&
+ git reset --hard &&
+ test "$(echo *)" = fILEa
+ '
+else
+ say "Neither ignorecase nor hardlinks, skipping git mv FileA fILEa"
+fi
+
test_done
--
1.7.4
Torsten Bögershausen <tboegi@web.de>