unused: --used-refspec can now be configured to look at refs in the reflog. This provides a way to not consider old versions of files to be unused after they have reached a specified age, when the old refs in the reflog expire.
May be slow.
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7 changed files with 40 additions and 13 deletions
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@ -15,7 +15,11 @@ import Data.Either
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type RefSpec = [RefSpecPart]
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data RefSpecPart = AddRef Ref | AddMatching Glob | RemoveMatching Glob
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data RefSpecPart
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= AddRef Ref
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| AddMatching Glob
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| AddRefLog
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| RemoveMatching Glob
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allRefSpec :: RefSpec
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allRefSpec = [AddMatching $ compileGlob "*" CaseSensative]
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@ -30,15 +34,19 @@ parseRefSpec v = case partitionEithers (map mk $ split ":" v) of
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Right $ AddMatching $ compileGlob s CaseSensative
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| otherwise = Right $ AddRef $ Ref s
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mk ('-':s) = Right $ RemoveMatching $ compileGlob s CaseSensative
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mk "reflog" = Right AddRefLog
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mk s = Left $ "bad refspec item \"" ++ s ++ "\" (expected + or - prefix)"
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applyRefSpec :: RefSpec -> [Ref] -> [Ref]
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applyRefSpec refspec rs = go [] refspec
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applyRefSpec :: Monad m => RefSpec -> [Ref] -> m [Sha] -> m [Ref]
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applyRefSpec refspec rs getreflog = go [] refspec
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where
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go c [] = reverse c
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go c [] = return (reverse c)
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go c (AddRef r : rest) = go (r:c) rest
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go c (AddMatching g : rest) =
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let add = filter (matchGlob g . fromRef) rs
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in go (add ++ c) rest
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go c (AddRefLog : rest) = do
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reflog <- getreflog
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go (reflog ++ c) rest
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go c (RemoveMatching g : rest) =
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go (filter (not . matchGlob g . fromRef) c) rest
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