Update minako-lexic.l

minako-lexic.l

@@ -17,7 +17,7 @@ BLOCK_COMMENT     "/*"((("*"[^/])?)|[^*])*"*/"
 LINE_COMMENT      "//".*
 INT               [0-9]+
 FLOAT             [0-9]+"."[0-9]+|"."[0-9]+([eE]([-+])?[0-9]+)?|[0-9]+[eE]([-+])?[0-9]+
-ID                ([a-zA-Z])+([0-9]|[a-zA-Z])*
+ID                [[:alpha:]]+[[:alnum:]]*
 PUNCTUATION       "+"|"-"|"*"|"/"|"="|"("|")"|"{"|"}"|","|";"
 WHITESPACE        [ \t\n\r]
 
@@ -51,12 +51,12 @@ while             return KW_WHILE;
 true              yylval.intValue = 1; return CONST_BOOLEAN;
 false             yylval.intValue = 0; return CONST_BOOLEAN;
 \"                BEGIN(st);
-<st>[^\n\"]*/\"   yylval.string = yytext; BEGIN(INITIAL);return CONST_STRING;
+<st>[^\n\"]*/\"   yylval.string = yytext; BEGIN(INITIAL); return CONST_STRING;
 {ID}              yylval.string = yytext; return ID;
 
 {PUNCTUATION}     return (int)(*yytext);
 {WHITESPACE}
 .                 invalid_token();
-<<EOF>>					  return EOF;
+<<EOF>>           return EOF;
 
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