showSignature = true messes with stats

[wendelscardua]

Expected behavior and actual behavior.

Expected: signature-related log text should be ignored by script
Actual: signature-related log text is parsed as if it was actual log text

Steps to reproduce the problem.

Enable on ~/.gitconfig:

[log]
    showSignature = true

List contributors sorted by name, on a repository with signed commits:

$ git quick-stats # and then select e.g. 7

Notes

There exists some git log command line switch for overriding of this flag - I don't remember which one, but another git-related project used it to avoid this problem.

[tomice]

I believe this can be fixed by passing the -c flag to git and saying log.showSignature=false before the rest of the commands. For example, in function contributors(), we would change:
git log --use-mailmap --no-merges --no-show-signature $_since $_until --format='%aN' $_pathspec | sort -u | cat -n

to

git -c log.showSignature=false log --use-mailmap --no-merges --no-show-signature $_since $_until --format='%aN' $_pathspec | sort -u | cat -n

Unfortunately, I don't really have any repositories I work in that are signed, so I don't have a readily accessible way of testing to make sure this fix will work. If you have a moment, do you think you could test this and see if it is a possible fix? If it does work, I can create a pull request real quick to fix the issue. If it doesn't, I can try to investigate further.

[wendelscardua]

@tomice it works!

[arzzen]

Thanks @tomice and @wendelscardua, added in pull request #58