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+#ifndef SCM_REGEX_POSIX_H
+#define SCM_REGEX_POSIX_H
+
+/* Copyright 1997-1998,2000-2001,2006,2008,2018
+ Free Software Foundation, Inc.
+
+ This file is part of Guile.
+
+ Guile is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Guile 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 Lesser General Public
+ License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with Guile. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+
+
+#include <libguile/error.h>
+
+SCM_API scm_t_bits scm_tc16_regex;
+#define SCM_RGX(X) ((regex_t *) SCM_SMOB_DATA (X))
+#define SCM_RGXP(X) (SCM_SMOB_PREDICATE (scm_tc16_regex, (X)))
+
+#define SCM_VALIDATE_RGXP(pos, a) SCM_MAKE_VALIDATE_MSG (pos, a, RGXP, "regexp")
+
+SCM_API SCM scm_make_regexp (SCM pat, SCM flags);
+SCM_API SCM scm_regexp_p (SCM x);
+SCM_API SCM scm_regexp_exec (SCM rx, SCM str, SCM start, SCM flags);
+SCM_INTERNAL void scm_init_regex_posix (void);
+
+#endif /* SCM_REGEX_POSIX_H */