Pre-commit hook don't log diff

[Arthur-Milchior]

Checked for duplicates?

• This issue is not a duplicate

Does it also happen in the desktop version?

• This bug does not occur in the latest version of Anki Desktop

What are the steps to reproduce this bug?

Make change to ankidroid.
Use git commit -am "whatever" or ./pre-commit or ./git/hooks/pre-commitIn.git` look at the last created file. "unstaged-ktlin-git-hook-date_hour.diff"

Expected behaviour

This file should contains the diff (or be deleted). Instead it's always empty.

Debug info

running on HEAD

(Optional) Anything else you want to share?

When I try the lines

    date=$(date +%y%m%d_%H%M%S)
    diff_path=.git/unstaged-ktlint-git-hook-$date.diff
     git diff --color=never > $diff_path

directly in a terminal it works as expected. I don't understand what's going on.

This cause data loss, again, when you only mrege some files and not all

Research

• I have checked the manual and the FAQ and could not find a solution to my issue
• (Optional) I have confirmed the issue is not resolved in the latest alpha release (instructions)