HsLexer does not recognize _var as valid
HsLexer does not recognize _var as a valid pattern, for
instance the following leads to a parse error:
case apa of
_bepa -> cepa
I've attached a patch that fixes this, but it's not
very nice. At least it shows the problem.
The Haskell report allows _ at the start of vars and
considers it lower case.
See 2.2 of the Haskell report, _ is not treated
differently than other small characters. The only
special case about _ is that _ is a reservedid, so it
should really be parsed as such (KW_Underscore for
instance). This requires changes in the parser, my
patch only changes the lexer (not changing the data type).
Trac metadata
Trac field |
Value |
Version |
5.0 |
Type |
Bug |
TypeOfFailure |
OtherFailure |
Priority |
normal |
Resolution |
ResolvedFixed |
Component |
hslibs/hssource |
Test case |
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Differential revisions |
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BlockedBy |
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Related |
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Blocking |
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CC |
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Operating system |
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Architecture |
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