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diff --git a/libguile/read.h b/libguile/read.h
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+#ifndef SCM_READ_H
+#define SCM_READ_H
+
+/* Copyright 1995-1996,2000,2006,2008-2009,2018
+ 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/options.h"
+
+
+/* SCM_LINE_INCREMENTORS are the characters which cause the line count to
+ * be incremented for the purposes of error reporting. This feature
+ * is only used for scheme code loaded from files.
+ *
+ * SCM_WHITE_SPACES are other characters which should be treated like spaces
+ * in programs.
+ */
+
+#define SCM_LINE_INCREMENTORS '\n'
+
+#ifdef MSDOS
+# define SCM_SINGLE_SPACES ' ':case '\r':case '\f': case 26
+#else
+# define SCM_SINGLE_SPACES ' ':case '\r':case '\f'
+#endif
+
+#define SCM_WHITE_SPACES SCM_SINGLE_SPACES: case '\t'
+
+
+
+
+
+SCM_API SCM scm_sym_dot;
+
+SCM_API SCM scm_read_options (SCM setting);
+SCM_API SCM scm_read (SCM port);
+SCM_API SCM scm_read_hash_extend (SCM chr, SCM proc);
+SCM_INTERNAL char *scm_i_scan_for_encoding (SCM port);
+SCM_API SCM scm_file_encoding (SCM port);
+
+SCM_INTERNAL void scm_i_input_error (const char *func, SCM port,
+ const char *message, SCM arg)
+ SCM_NORETURN;
+
+SCM_INTERNAL void scm_init_read (void);
+
+#endif /* SCM_READ_H */