Re: git version 2.20.1.windows.1 throws file name too long in gitk

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Hi Bret,


On Thu, 3 Jan 2019, Bret Barkelew wrote:

> They are the exact same path (with a different drive letter).

[it's a bit hard to follow the thread if you top-post a reply to an
inline-replied answer, maybe imitate the style of other mails in the
future.]

> Another thing I've been able to confirm is I uninstalled git 2.20.1
> and installed 2.19.0 on the failing system, and the older version of
> Git works.
> I've also tried a suggested fix I saw elsewhere to enable long path
> names in the Windows registry, which did not resolve the issue with
> git 2.20.1.
> 
> Happy to collect any additional data.

Please try the latest snapshot at
https://wingit.blob.core.windows.net/files/index.html (I *think* the bug
might be fixed via
https://github.com/git-for-windows/MINGW-packages/pull/32).

Ciao,
Johannes

> - Bret
> 
> On Thu, Jan 3, 2019 at 7:10 PM Bryan Turner <bturner@xxxxxxxxxxxxx> wrote:
> >
> > On Thu, Jan 3, 2019 at 6:21 PM Bret Barkelew <bret@xxxxxxxxxxx> wrote:
> >>
> >> When I open gitk in a particular repository under this version of Git
> >> for Windows, I now get a dialog box that says "Error: couldn't execute
> >> "git": file name too long". I've noticed that the most pronounced
> >> effect is that I cannot see the file diffs (or sometimes the file name
> >> list) for any of the commits. I don't know the exact repro, but I've
> >> narrowed down the following things:
> >>
> >> - This does not happen with the same repo if I use a system that has
> >> git 2.19.0.windows.1 on another machine.
> >> - This does not happen on my current machine in a freshly cloned repo.
> >
> >
> > How “deep” are the paths to the different clones on the different systems? Are all of the clones at exactly the same path on disk?
> >
> > Git on Windows is (by defaulted) limited by MAX_PATH, which is 260 characters. That length is calculated including the path to the repository itself and then to the file inside the repository. That means, for example, a given repository cloned to C:\repo may not have issues, but the same repository cloned to C:\Users\Bryan\Documents\workspaces\repo may.
> >
> >>
> >> However, as soon as the remote updates with any changes on a given
> >> fetch/pull, the repo is put in a bad state permanently.
> >>
> >> I've pasted the output from gitk below...
> >>
> >> couldn't execute "git": file name too long
> >> couldn't execute "git": file name too long
> >>     while executing
> >> "open $cmd r"
> >>     (procedure "getallcommits" line 48)
> >>     invoked from within
> >> "getallcommits"
> >>     (procedure "readcache" line 80)
> >>     invoked from within
> >> "readcache file827e200"
> >>     ("eval" body line 1)
> >>     invoked from within
> >> "eval $script"
> >>     (procedure "dorunq" line 11)
> >>     invoked from within
> >> "dorunq"
> >>     ("after" script)
> >>
> >> Happy to gather whatever data needed.
> >> Thanks!
> >> - Bret Barkelew
> 

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