Re: Clarifying "invalid tag signature file" error message from git filter-branch (and others)

James Youngman wrote:

What do the errors "error: char88: malformed tagger field" and "fatal:
invalid tag signature file" and "Could not create new tag object for
FINDUTILS-4_1-10" signify in the session below?

It means the tagger field in the tag does not follow the correct form.
Specifically the testing in git-mktag (called by filter-branch) does:

         * Check for correct form for name and email
         * i.e. " <" followed by "> " on _this_ line
         * No angle brackets within the name or email address fields.
         * No spaces within the email address field.

What does 'git cat-file tag FINDUTILS-4_1-10' show you?

Are any of those errors correctable (I can re-run the tree rewrite
script as many times as needed, I'm just using it on a test repository
for now).

If there are only a few, then you can manually retag with a corrected
tagger field, and then run your script.

Of course, depending on the output of the cat-file call above, the
testing in git-mktag may need to be relaxed.

-brandon