talisman breaks when gitconfig.diff.noprefix=true

[revolunet]

Describe the bug Talisman 1.28.0 (and below) silently fails if you have this setting in your ~/.gitconfig:

[diff]
  noprefix = true

To Reproduce Add the GIT setting, try to to run talisman pre-commit hook

This result in :

Talisman Scan: 0 <...........................................................................................................................................................................................................................................................................> ?%
Talisman done in 68.989268ms
 TALISMAN >>>>   Check passed!!!!

You can see the progressbar is broken (?%) that's because talisman cant handle the git diff output

Also, errored files are not detected and commited

Expected behavior

Talisman should detect or override such userland setting or warn the user.