Because (from a quick look) their completion script never expands a
variable which is not known to be set.
They use $1, $2, etc. In fact, they use $1, $2, and $3 in their _hg, which is their main completion function. Why would those be defined there?
In fact, it's $1, $2, $3, and $4 that are causing the problemw ith the git completions.
--Ted
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Ted Pavlic [off-list ref]
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