id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
3741	"ghci misinterprets ""early"" unicode characters"	brian	igloo	"It seems as if ghci misinterprets unicode characters if they occur too early in a source file.


{{{
$ cat test.hs
--data A = A -- example will not work if this line is commented
笑 :: [a] -> Int
笑 = length
}}}

{{{
$ ghci test.hs
GHCi, version 6.10.4: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer ... linking ... done.
Loading package base ... linking ... done.
[1 of 1] Compiling Main             ( test.hs, interpreted )

test.hs:2:0:
    Illegal signature in pattern: [a] -> Int 笑
        Use -XScopedTypeVariables to permit it
Failed, modules loaded: none.
Prelude>
}}}

Uncommenting the first line makes the problem go away."	merge	closed	normal	6.12.2	Compiler (Parser)	6.10.4	fixed			Unknown/Multiple	Unknown/Multiple	GHC rejects valid program