* lib/regex.c: New file, GNU regex implementation.

	* lib/regex.h: New file.
	* lib/posix: New directory.
	* lib/posix/Makefile.am: New file.
	* lib/posix/regex.h: New file.
	* lib/Makefile.am: Add SUBDIRS=posix and regex.c dependencies.

 AUTOMAKE_OPTIONS = ansi2knr
 noinst_LIBRARIES = libmailutils.a
 
+SUBDIRS = posix
+
 libmailutils_a_SOURCES = basename.c getopt.c getopt1.c md5.c getline.c \
   xstrdup.c xmalloc.c argcv.c
 
@@ -8,7 +10,7 @@ EXTRA_DIST = alloca.c fnmatch.c setenv.c snprintf.c strchrnul.c strndup.c \
   strnlen.c strtok_r.c strsignal.c xstrtol.c vasprintf.c malloc.c realloc.c
 
 noinst_HEADERS = argcv.h error.h fnmatch.h getline.h getopt.h md5.h \
- snprintf.h xalloc.h xstrtol.h
+ regex.h snprintf.h xalloc.h xstrtol.h
 
 libmailutils_a_LIBADD = @LIBOBJS@ @ALLOCA@
 

+Makefile.in
+Makefile
+.deps

+## Process this file with automake to create Makefile.in
+AUTOMAKE_OPTIONS=no-dependencies
+
+EXTRA_DIST = regex.h

+#ifndef _REGEX_H
+#include <posix/regex.h>
+
+/* Document internal interfaces.  */
+extern reg_syntax_t __re_set_syntax _RE_ARGS ((reg_syntax_t syntax));
+
+extern const char *__re_compile_pattern
+  _RE_ARGS ((const char *pattern, size_t length,
+             struct re_pattern_buffer *buffer));
+
+extern int __re_compile_fastmap _RE_ARGS ((struct re_pattern_buffer *buffer));
+
+extern int __re_search
+  _RE_ARGS ((struct re_pattern_buffer *buffer, const char *string,
+            int length, int start, int range, struct re_registers *regs));
+
+extern int __re_search_2
+  _RE_ARGS ((struct re_pattern_buffer *buffer, const char *string1,
+             int length1, const char *string2, int length2,
+             int start, int range, struct re_registers *regs, int stop));
+
+extern int __re_match
+  _RE_ARGS ((struct re_pattern_buffer *buffer, const char *string,
+             int length, int start, struct re_registers *regs));
+
+extern int __re_match_2
+  _RE_ARGS ((struct re_pattern_buffer *buffer, const char *string1,
+             int length1, const char *string2, int length2,
+             int start, struct re_registers *regs, int stop));
+
+extern void __re_set_registers
+  _RE_ARGS ((struct re_pattern_buffer *buffer, struct re_registers *regs,
+             unsigned num_regs, regoff_t *starts, regoff_t *ends));
+
+extern int __regcomp _RE_ARGS ((regex_t *__preg, const char *__pattern,
+				int __cflags));
+
+extern int __regexec _RE_ARGS ((const regex_t *__preg,
+				const char *__string, size_t __nmatch,
+				regmatch_t __pmatch[], int __eflags));
+
+extern size_t __regerror _RE_ARGS ((int __errcode, const regex_t *__preg,
+				    char *__errbuf, size_t __errbuf_size));
+
+extern void __regfree _RE_ARGS ((regex_t *__preg));
+#endif