change token definitions

Author: ideal

src/conf_scan.l

@@ -23,8 +23,8 @@ env        return TOKENENV;
 \"         return QUOTE;
 \;         return SEMICOLON;
 {number}+  yylval->string=strdup(yytext); return NUMBER;
-[0-9]+[a-zA-Z]*         yylval->string=strdup(yytext); return ALNUMWORD;
-[a-zA-Z][a-zA-Z0-9-]*   yylval->string=strdup(yytext); return ALPHAWORD;
+[0-9]+[_a-zA-Z-]*        yylval->string=strdup(yytext); return ALNUMWORD;
+[a-zA-Z][_a-zA-Z0-9-]*   yylval->string=strdup(yytext); return ALPHAWORD;
 \/[a-zA-Z0-9]+(\/[-_+a-zA-Z0-9]+)* yylval->string=strdup(yytext); return PATH;
 -(-)?[^ \t\n;0-9-]+             yylval->string=strdup(yytext); return ARGKEY;
 [a-zA-Z][a-zA-Z0-9]*=[^;\n]+    yylval->string=strdup(yytext); return ENVAR;