id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc
210,Parse errors when TransformListComp extension is enabled,iago,nibro,"I'm experiencing many strange parse errors when parsing with all extensions enabled:

Parse error: l-i[[BR]]
Parse error: m-n[[BR]]
Parse error in expression: off_b +[[BR]]
Parse error: group[[BR]]
...

I know the code is fine because it actually compiles, the only thing I do before parse these files with haskell-src-exts is to run cpphs --noline over them, the output of cpphs is what I'm parsing.

I was able to isolate one of these faults (I could take a look on others if that helps):

The following module
{{{
Prelude Language.Haskell.Exts> f
""module Bar where\n\nimport Data.List ( group )\n\n""
}}}
is not correctly parsed when all known extensions are activated
{{{
Prelude Language.Haskell.Exts> parseModuleWithMode (defaultParseMode{extensions=knownExtensions}) f
ParseFailed (SrcLoc {srcFilename = ""<unknown>.hs"", srcLine = 3, srcColumn = 20}) ""Parse error: group""
}}}
but parsing without any extension enabled works
{{{
Prelude Language.Haskell.Exts> parseModule f
ParseOk (Module (SrcLoc {srcFilename = ""<unknown>.hs"", srcLine = 1, srcColumn = 1}) (ModuleName ""Bar"") [] Nothing Nothing [ImportDecl {importLoc = SrcLoc {srcFilename = ""<unknown>.hs"", srcLine = 3, srcColumn = 1}, importModule = ModuleName ""Data.List"", importQualified = False, importSrc = False, importPkg = Nothing, importAs = Nothing, importSpecs = Just (False,[IVar (Ident ""group"")])}] [])
}}}

Note: The exact version is the 1.10.1.",bug report,new,major,,parser,1.10.0,,,