Am 5/7/2014 0:59, schrieb dtur...@twopensource.com:
> From: David Turner <dtur...@twitter.com>
> 
> Make it possible to change the case of a filename on a
> case-insensitive filesystem using git mv.  Change git mv to allow
> moves where the destination file exists if either the destination file
> has the same inode as the source file (for Mac) or the same name
> ignoring case (for Win).
> 
> Signed-off-by: David Turner <dtur...@twitter.com>
> ---
>  builtin/mv.c                | 18 ++++++++++--------
>  t/t6039-merge-ignorecase.sh |  2 +-
>  2 files changed, 11 insertions(+), 9 deletions(-)
> 
> diff --git a/builtin/mv.c b/builtin/mv.c
> index 45e57f3..8cead13 100644
> --- a/builtin/mv.c
> +++ b/builtin/mv.c
> @@ -74,7 +74,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
>       };
>       const char **source, **destination, **dest_path, **submodule_gitfile;
>       enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
> -     struct stat st;
> +     struct stat src_st,dst_st;
>       struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
>  
>       gitmodules_config();
> @@ -102,8 +102,8 @@ int cmd_mv(int argc, const char **argv, const char 
> *prefix)
>       if (dest_path[0][0] == '\0')
>               /* special case: "." was normalized to "" */
>               destination = internal_copy_pathspec(dest_path[0], argv, argc, 
> DUP_BASENAME);
> -     else if (!lstat(dest_path[0], &st) &&
> -                     S_ISDIR(st.st_mode)) {
> +     else if (!lstat(dest_path[0], &dst_st) &&
> +                     S_ISDIR(dst_st.st_mode)) {
>               dest_path[0] = add_slash(dest_path[0]);
>               destination = internal_copy_pathspec(dest_path[0], argv, argc, 
> DUP_BASENAME);
>       } else {
> @@ -122,13 +122,13 @@ int cmd_mv(int argc, const char **argv, const char 
> *prefix)
>                       printf(_("Checking rename of '%s' to '%s'\n"), src, 
> dst);
>  
>               length = strlen(src);
> -             if (lstat(src, &st) < 0)
> +             if (lstat(src, &src_st) < 0)
>                       bad = _("bad source");
>               else if (!strncmp(src, dst, length) &&
>                               (dst[length] == 0 || dst[length] == '/')) {
>                       bad = _("can not move directory into itself");
> -             } else if ((src_is_dir = S_ISDIR(st.st_mode))
> -                             && lstat(dst, &st) == 0)
> +             } else if ((src_is_dir = S_ISDIR(src_st.st_mode))
> +                             && lstat(dst, &dst_st) == 0)
>                       bad = _("cannot move directory over file");
>               else if (src_is_dir) {
>                       int first = cache_name_pos(src, length);
> @@ -202,14 +202,16 @@ 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, &dst_st) == 0 &&
> +                      (src_st.st_ino != dst_st.st_ino ||
> +                       (src_st.st_ino == 0 && strcasecmp(src, dst)))) {

Don't do that. st_ino is zero on Windows only because we do not spend time
to fill in the field. Don't use it as an indicator for a case-insensitive
file system; zero may be a valid inode number on other systems.

>                       bad = _("destination exists");
>                       if (force) {
>                               /*
>                                * only files can overwrite each other:
>                                * check both source and destination
>                                */
> -                             if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) 
> {
> +                             if (S_ISREG(dst_st.st_mode) || 
> S_ISLNK(dst_st.st_mode)) {
>                                       if (verbose)
>                                               warning(_("overwriting '%s'"), 
> dst);
>                                       bad = NULL;
> diff --git a/t/t6039-merge-ignorecase.sh b/t/t6039-merge-ignorecase.sh
> index ad06752..28cfb49 100755
> --- a/t/t6039-merge-ignorecase.sh
> +++ b/t/t6039-merge-ignorecase.sh
> @@ -35,7 +35,7 @@ test_expect_success 'merge with case-changing rename on 
> both sides' '
>       git reset --hard baseline &&
>       git branch -D with-camel &&
>       git checkout -b with-camel &&
> -     git mv --force TestCase testcase &&
> +     git mv TestCase testcase &&
>       git commit -m "recase on branch" &&
>       > foo &&
>       git add foo &&

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