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diff --git a/mbregex/COPYING.LIB b/mbregex/COPYING.LIB
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--- /dev/null
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+
+                  GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
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diff --git a/mbregex/mbregex.h b/mbregex/mbregex.h
new file mode 100644
index 0000000..03292bc
--- /dev/null
+++ b/mbregex/mbregex.h
@@ -0,0 +1,213 @@
+/* Definitions for data structures and routines for the regular
+   expression library, version 0.12.
+   Copyright (C) 1985,89,90,91,92,93,95,96,97,98 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.  Its master source is NOT part of
+   the C library, however.  The master source lives in /gd/gnu/lib.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+/* Multi-byte extension added May, 1993 by t^2 (Takahiro Tanimoto)
+   Last change: May 21, 1993 by t^2  */
+/* modified for Ruby by matz@netlab.co.jp */
+
+#ifndef __MB_REGEXP_LIBRARY
+#define __MB_REGEXP_LIBRARY
+
+#include <stddef.h>
+
+/* Define number of parens for which we record the beginnings and ends.
+   This affects how much space the `struct re_registers' type takes up.  */
+#ifndef MBRE_NREGS
+#define MBRE_NREGS 10
+#endif
+
+#define MBRE_BYTEWIDTH 8
+
+#define MBRE_REG_MAX ((1<<MBRE_BYTEWIDTH)-1)
+
+/* Maximum number of duplicates an interval can allow.  */
+#ifndef MBRE_DUP_MAX
+#define MBRE_DUP_MAX  ((1 << 15) - 1) 
+#endif
+
+
+/* If this bit is set, then character classes are supported; they are:
+     [:alpha:], [:upper:], [:lower:],  [:digit:], [:alnum:], [:xdigit:],
+     [:space:], [:print:], [:punct:], [:graph:], and [:cntrl:].
+   If not set, then character classes are not supported.  */
+#define MBRE_CHAR_CLASSES (1L << 9)
+
+/* match will be done case insensetively */
+#define MBRE_OPTION_IGNORECASE (1L)
+/* perl-style extended pattern available */
+#define MBRE_OPTION_EXTENDED   (MBRE_OPTION_IGNORECASE<<1)
+/* newline will be included for . */
+#define MBRE_OPTION_MULTILINE  (MBRE_OPTION_EXTENDED<<1)
+/* ^ and $ ignore newline */
+#define MBRE_OPTION_SINGLELINE (MBRE_OPTION_MULTILINE<<1)
+/* works line Perl's /s; it's called POSIX for wrong reason */
+#define MBRE_OPTION_POSIXLINE  (MBRE_OPTION_MULTILINE|MBRE_OPTION_SINGLELINE)
+/* search for longest match, in accord with POSIX regexp */
+#define MBRE_OPTION_LONGEST    (MBRE_OPTION_SINGLELINE<<1)
+
+#define MBRE_MAY_IGNORECASE    (MBRE_OPTION_LONGEST<<1)
+#define MBRE_OPTIMIZE_ANCHOR   (MBRE_MAY_IGNORECASE<<1)
+#define MBRE_OPTIMIZE_EXACTN   (MBRE_OPTIMIZE_ANCHOR<<1)
+#define MBRE_OPTIMIZE_NO_BM    (MBRE_OPTIMIZE_EXACTN<<1)
+#define MBRE_OPTIMIZE_BMATCH   (MBRE_OPTIMIZE_NO_BM<<1)
+
+/* For multi-byte char support */
+#define MBCTYPE_ASCII 0
+#define MBCTYPE_EUC 1
+#define MBCTYPE_SJIS 2
+#define MBCTYPE_UTF8 3
+
+#if 0
+#if defined IMPORT || defined USEIMPORTLIB
+extern __declspec(dllimport)
+#elif defined EXPORT
+extern __declspec(dllexport)
+#else
+extern
+#endif
+const unsigned char *re_mbctab;
+#if defined(__STDC__)
+void re_mbcinit (int);
+#else
+void re_mbcinit ();
+#endif
+#endif
+
+#undef ismbchar
+#define ismbchar(c) re_mbctab[(unsigned char)(c)]
+#define mbclen(c)   (re_mbctab[(unsigned char)(c)]+1)
+
+/* Structure used in re_match() */
+
+typedef union
+{
+  unsigned char *word;
+  struct {
+    unsigned is_active : 1;
+    unsigned matched_something : 1;
+  } bits;
+} mbre_register_info_type;
+
+/* This data structure is used to represent a compiled pattern.  */
+
+struct mbre_pattern_buffer
+  {
+    char *buffer;       /* Space holding the compiled pattern commands.  */
+    int allocated;      /* Size of space that `buffer' points to. */
+    int used;           /* Length of portion of buffer actually occupied  */
+    char *fastmap;      /* Pointer to fastmap, if any, or zero if none.  */
+                        /* re_search uses the fastmap, if there is one,
+                           to skip over totally implausible characters.  */
+    char *must;         /* Pointer to exact pattern which strings should have
+                           to be matched.  */
+    int *must_skip;     /* Pointer to exact pattern skip table for bm_search */
+    char *stclass;      /* Pointer to character class list at top */
+    long options;       /* Flags for options such as extended_pattern. */
+    long re_nsub;       /* Number of subexpressions found by the compiler. */
+    char fastmap_accurate;
+                        /* Set to zero when a new pattern is stored,
+                           set to one when the fastmap is updated from it.  */
+    char can_be_null;   /* Set to one by compiling fastmap
+                           if this pattern might match the null string.
+                           It does not necessarily match the null string
+                           in that case, but if this is zero, it cannot.
+                           2 as value means can match null string
+                           but at end of range or before a character
+                           listed in the fastmap.  */
+
+    /* stack & working area for re_match() */
+    unsigned char **regstart;
+    unsigned char **regend;
+    unsigned char **old_regstart;
+    unsigned char **old_regend;
+    mbre_register_info_type *reg_info;
+    unsigned char **best_regstart;
+    unsigned char **best_regend;
+
+    int mbctype;
+  };
+
+typedef struct mbre_pattern_buffer mb_regex_t;
+
+/* Structure to store register contents data in.
+
+   Pass the address of such a structure as an argument to re_match, etc.,
+   if you want this information back.
+
+   For i from 1 to MBRE_NREGS - 1, start[i] records the starting index in
+   the string of where the ith subexpression matched, and end[i] records
+   one after the ending index.  start[0] and end[0] are analogous, for
+   the entire pattern.  */
+
+struct mbre_registers
+  {
+    int allocated;
+    int num_regs;
+    int *beg;
+    int *end;
+  };
+
+#if 0
+/* Type for byte offsets within the string.  POSIX mandates this.  */
+typedef size_t regoff_t;
+
+/* POSIX specification for registers.  Aside from the different names than
+   `mbre_registers', POSIX uses an array of structures, instead of a
+   structure of arrays.  */
+typedef struct
+{
+  regoff_t rm_so;  /* Byte offset from string's start to substring's start.  */
+  regoff_t rm_eo;  /* Byte offset from string's start to substring's end.  */
+} regmatch_t;
+#endif
+
+
+#ifdef __STDC__
+
+extern char *mbre_compile_pattern (const char *, int, struct mbre_pattern_buffer *);
+void mbre_free_pattern (struct mbre_pattern_buffer *);
+/* Is this really advertised?  */
+extern int mbre_adjust_startpos (struct mbre_pattern_buffer *, const char*, int, int, int);
+extern void mbre_compile_fastmap (struct mbre_pattern_buffer *);
+extern int mbre_search (struct mbre_pattern_buffer *, const char*, int, int, int,
+                      struct mbre_registers *);
+extern int mbre_match (struct mbre_pattern_buffer *, const char *, int, int,
+                     struct mbre_registers *);
+extern void mbre_set_casetable (const char *table);
+extern void mbre_copy_registers (struct mbre_registers*, struct mbre_registers*);
+extern void mbre_free_registers (struct mbre_registers*);
+
+#else /* !__STDC__ */
+
+extern char *mbre_compile_pattern ();
+void mbre_free_pattern ();
+/* Is this really advertised? */
+extern int mbre_adjust_startpos ();
+extern void mbre_compile_fastmap ();
+extern int mbre_search ();
+extern int mbre_match ();
+extern void mbre_set_casetable ();
+extern void mbre_copy_registers ();
+extern void mbre_free_registers ();
+
+#endif /* __STDC__ */
+
+#endif /* !__MB_REGEXP_LIBRARY */