Control: tags -1 + upstream hehe hoho git grep '(' is actually git grep PATTERN_GROUP_START, because git grep has pattern grouping.
Not a bug per se, but the error message is actively adversarial: $ git grep \( fatal: unmatched parenthesis $ git grep \) fatal: incomplete pattern expression: ) neither of these explain what the error actually is. Somehow the one for ) is worse, since this is a /complete/ pattern (which is a regular expression).
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