[cvs-nhc98] patch applied (hat): Fix lexical error (masquerading as a parse error) with an underscore

Tue Jun 14 03:25:53 PDT 2005 malcolm * Fix lexical error (masquerading as a parse error) with an underscore pattern e.g. "f _2a", when the -underscore flag is off (the default). Because the character following the underscore is neither lower nor upper, nhc98's special treatment (ignore the underscore in deciding whether it is a conid or varid) does not apply. Thus, drop through to the standard H'98 behaviour of underscore=lowercase, therefore a varid. M ./src/compiler98/LexLow.hs -1 +2