Hi Dan

On 30/06/2025 17:07, Dan Pristupov wrote:

Hi,

`cat-file --filter` stopped working in git 2.50.

cat-file did not have a "--filter" option before 2.50. The option you 
are looking for is "--filters". As git accepts unambiguous abbreviations 
for long options "--filter" used to match "--filters" but now it is a 
separate option. Being able to use abbreviated option names is useful at 
the command line but they are best avoided in scripts.

Best Wishes

Phillip

$ git version
git version 2.47.1.windows.2

$ git cat-file --filter "HEAD:changelog.md"
<content>

$ git version
git version 2.50.0.windows.1

$ git cat-file --filter "HEAD:changelog.md"
fatal: invalid filter-spec 'HEAD:changelog.md'

The problem was introduced at eb83e4c64b5a3458569593c2ab0c29365f10a82f.

Then it was merged into the main branch by 
a271b05066a1fd2c3a62508d9908d6c5df14a1cb.

This seems like a bug.