Re: Git should preserve modification times at least on request

[Phillip Wood <phillip.wood@talktalk.net>]

On 20/02/18 22:48, Peter Backes wrote:
> 
> On Tue, Feb 20, 2018 at 11:32:23PM +0100, Johannes Schindelin wrote:
>> Hi Peter,
>>
>> On Tue, 20 Feb 2018, Peter Backes wrote:
>>
>>> On Tue, Feb 20, 2018 at 11:46:38AM +0100, Johannes Schindelin wrote:
>>>
>>>> I would probably invent a file format (`<mtime><TAB><path><LF>`)
>>>
>>> I'm stuck there because of <path> being munged.
>>
>>  From which command do you want to get it? If you are looking at `git
>> diff`, you may want to use the `-z --name-only` options to avoid munging
>> the paths.
> 
> I plan to use "git diff-tree --name-only $w_tree HEAD" and subtract
> all lines from "git diff-index --name-only HEAD" to get the files for
> which the timestamp should be stored..
> 
> If I use "-z" I get the non-munged path, but I cannot safely store such
> paths in the proposed file format; they might contain newlines (sigh).
> So at one point I have to munge. Then the same question arises when I
> have to get the actual path from the munged path when restoring the
> timestamps.
> 
> If there's no ready-made functionality to munge and unmunge paths, I
> have to write some awk for this. At first I thought this might add one
> more dependency to git, but it seems that awk is already used in
> git-mergetool.sh, so I suppose it's okay to use in git-stash.sh etc,
> too.

In recent versions of git there's unquote_path() in Git.pm, you could 
possibly use that with perl -e from your script

Best Wishes

Phillip
> Best wishes
> Peter
>