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lib: note debugLevel gotcha in GHCI

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Simon Michael 2016-02-19 22:54:38 -08:00
parent 7aab544cf6
commit dd77ac4c0a
1 changed files with 4 additions and 2 deletions
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hledger-lib/Hledger/Utils/Debug.hs
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@ -70,8 +70,10 @@ ptrace msg = do
-- @--debug@ command line flag sets it to 1, or @--debug=N@ sets it to
-- a higher value (note: not @--debug N@ for some reason). This uses
-- unsafePerformIO and can be accessed from anywhere and before normal
-- command-line processing. After command-line processing, it is also
-- available as the @debug_@ field of 'Hledger.Cli.CliOptions.CliOpts'.
-- command-line processing. When running with :main in GHCI, you must
-- touch and reload this module to see the effect of a new --debug option.
-- After command-line processing, it is also available as the @debug_@
-- field of 'Hledger.Cli.CliOptions.CliOpts'.
-- {-# OPTIONS_GHC -fno-cse #-}
-- {-# NOINLINE debugLevel #-}
debugLevel :: Int