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+/** \noop-*-C++-*-vi:ft=cpp
+ * @file
+ * @author Ruby developers <ruby-core@ruby-lang.org>
+ * @copyright This file is a part of the programming language Ruby.
+ * Permission is hereby granted, to either redistribute and/or
+ * modify this file, provided that the conditions mentioned in the
+ * file COPYING are met. Consult the file for details.
+ * @warning Symbols prefixed with either `RUBY3` or `ruby3` are
+ * implementation details. Don't take them as canon. They could
+ * rapidly appear then vanish. The name (path) of this header file
+ * is also an implementation detail. Do not expect it to persist
+ * at the place it is now. Developers are free to move it anywhere
+ * anytime at will.
+ * @note To ruby-core: remember that this header can be possibly
+ * recursively included from extension libraries written in C++.
+ * Do not expect for instance `__VA_ARGS__` is always available.
+ * We assume C99 for ruby itself but we don't assume languages of
+ * extension libraries. They could be written in C++98.
+ * @brief Public APIs related to ::rb_cRegexp.
+ */
+#ifndef RUBY3_INTERN_RE_H
+#define RUBY3_INTERN_RE_H
+#include "ruby/3/dllexport.h"
+#include "ruby/3/value.h"
+
+RUBY3_SYMBOL_EXPORT_BEGIN()
+
+/* re.c */
+#define rb_memcmp memcmp
+int rb_memcicmp(const void*,const void*,long);
+void rb_match_busy(VALUE);
+VALUE rb_reg_nth_defined(int, VALUE);
+VALUE rb_reg_nth_match(int, VALUE);
+int rb_reg_backref_number(VALUE match, VALUE backref);
+VALUE rb_reg_last_match(VALUE);
+VALUE rb_reg_match_pre(VALUE);
+VALUE rb_reg_match_post(VALUE);
+VALUE rb_reg_match_last(VALUE);
+#define HAVE_RB_REG_NEW_STR 1
+VALUE rb_reg_new_str(VALUE, int);
+VALUE rb_reg_new(const char *, long, int);
+VALUE rb_reg_alloc(void);
+VALUE rb_reg_init_str(VALUE re, VALUE s, int options);
+VALUE rb_reg_match(VALUE, VALUE);
+VALUE rb_reg_match2(VALUE);
+int rb_reg_options(VALUE);
+
+RUBY3_SYMBOL_EXPORT_END()
+
+#endif /* RUBY3_INTERN_RE_H */