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Avoid backtraces on expected failures when built with ghc 8; only use backtraces for unexpected errors.

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ghc 8 added backtraces on uncaught errors. This is great, but git-annex was
using error in many places for a error message targeted at the user, in
some known problem case. A backtrace only confuses such a message, so omit it.

Notably, commands like git annex drop that failed due to eg, numcopies,
used to use error, so had a backtrace.

This commit was sponsored by Ethan Aubin.
This commit is contained in:
Joey Hess 2016-11-15 21:29:54 -04:00
parent 69915c6c9b
commit 0a4479b8ec
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116 changed files with 287 additions and 270 deletions
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Creds.hs
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@ -105,7 +105,7 @@ getRemoteCredPair c gc storage = maybe fromcache (return . Just) =<< fromenv
-- Not a problem for shared cipher.
case storablecipher of
SharedCipher {} -> showLongNote "gpg error above was caused by an old git-annex bug in credentials storage. Working around it.."
_ -> error "*** Insecure credentials storage detected for this remote! See https://git-annex.branchable.com/upgrades/insecure_embedded_creds/"
_ -> giveup "*** Insecure credentials storage detected for this remote! See https://git-annex.branchable.com/upgrades/insecure_embedded_creds/"
fromcreds $ fromB64 enccreds
fromcreds creds = case decodeCredPair creds of
Just credpair -> do