Unable to merge tracking into base: file name too long

[yp05327]

Description

• create a repo, add a file with long name (over 255 in linux)
• create a new branch, and commit some changes
• create a PR
• commit some changes to default branch
• go to the PR, you will see Update branch by merge button, and press it, then you will get this error:
  

Gitea Version

latest

Can you reproduce the bug on the Gitea demo site?

No

Log Gist

No response

Screenshots

No response

Git Version

No response

Operating System

No response

How are you running Gitea?

build

Database

None

[yp05327]

https://serverfault.com/questions/9546/filename-length-limits-on-linux
It seems that the max length of filename in Linux is 255, but we can create a file with a name longer than this limit from Web UI.

[yp05327]

This was added in #29389 which is not correct enough.
#29389 (comment)

The 500 maxlength is from TreePath

But the definition of this maxlength was 500 from long long ago, and this doesn't make sense as the max path length is 4096 in linux and for windows, it depends on the version:
https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation?tabs=registry
So we need to make some changes.

[lunny]

The normal file system should allow file path length below 256?

[yp05327]

The normal file system should allow file path length below 256?

Updated my comment above

[lunny]

Can we set git config like below in Gitea internal configuration? Windows special configuration.

git config core.longpaths true

[yp05327]

This may work in Windows, as Windows don't have file name length limit.
But in Linux, there's a limit of file name length, you can use getconf NAME_MAX . to see value.

[silverwind]

core.longpaths

Is that a windows-specific option? I don't find it on https://git-scm.com/docs/git-config.

[lunny]

I just tested GH web editor, the filename can be longer than 255.