support boolean git configs that are represented by the name of the setting with no value

Eg"core.bare" is the same as "core.bare = true".

Note that git treats "core.bare =" the same as "core.bare = false", so the
code had to become more complicated in order to treat the absense of a
value differently than an empty value. Ugh.
This commit is contained in:
Joey Hess 2020-04-13 13:35:22 -04:00
parent ca9c6c5f60
commit 9cb69dbb76
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8 changed files with 35 additions and 7 deletions

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@ -58,6 +58,7 @@ instance FromUUID ConfigValue where
instance ToUUID ConfigValue where
toUUID (ConfigValue v) = toUUID v
toUUID NoConfigValue = NoUUID
-- There is no matching FromUUID U.UUID because a git-annex UUID may
-- be NoUUID or perhaps contain something not allowed in a canonical UUID.