#10106: GHC doesn't warn on typos in language pragmas -------------------------------------+------------------------------------- Reporter: sdemos | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 Keywords: | Operating System: Linux Architecture: | Type of failure: Incorrect Unknown/Multiple | warning at compile-time Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- In particular, I was struggling with the QuasiQuotes language extension. I had - {{{#!hs {-# LANGAUGE QuasiQuotes #-} site = [shamelet|Hello World!|] }}} Notice the transposed A and U in `LANGUAGE` The error that ghc was emitting was - `Main.hs:23:47: parse error on input ‘]’` It took me a long time and a lot of head-banging to figure out that it was a typo in the language pragma, especially because the language pragma was surrounded by other language pragmas and it was at the top of the file. I would think that this should at least emit a warning when there is a typo in a pragma. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10106 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler