Added mode option to regex and also changed example from a line reader to a tokenizer.

mpc.h

@@ -156,6 +156,7 @@ mpc_parser_t *mpc_eoi(void);
 mpc_parser_t *mpc_soi(void);
 
 mpc_parser_t *mpc_boundary(void);
+mpc_parser_t *mpc_boundary_newline(void);
 
 mpc_parser_t *mpc_whitespace(void);
 mpc_parser_t *mpc_whitespaces(void);
@@ -264,7 +265,16 @@ mpc_val_t *mpcf_maths(int n, mpc_val_t** xs);
 ** Regular Expression Parsers
 */
 
+enum {
+  MPC_RE_DEFAULT   = 0,
+  MPC_RE_M         = 1,
+  MPC_RE_S         = 2,
+  MPC_RE_MULTILINE = 1,
+  MPC_RE_DOTALL    = 2
+};
+
 mpc_parser_t *mpc_re(const char *re);
+mpc_parser_t *mpc_re_mode(const char *re, int mode);
   
 /*
 ** AST