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diff --git a/gnulib/lib/linebuffer.h b/gnulib/lib/linebuffer.h
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+/* linebuffer.h -- declarations for reading arbitrarily long lines
+
+ Copyright (C) 1986, 1991, 1998-1999, 2002-2003, 2007, 2009-2011 Free
+ Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#if !defined LINEBUFFER_H
+# define LINEBUFFER_H
+
+# include <stdio.h>
+
+/* A `struct linebuffer' holds a line of text. */
+
+struct linebuffer
+{
+ size_t size; /* Allocated. */
+ size_t length; /* Used. */
+ char *buffer;
+};
+
+/* Initialize linebuffer LINEBUFFER for use. */
+void initbuffer (struct linebuffer *linebuffer);
+
+/* Read an arbitrarily long line of text from STREAM into LINEBUFFER.
+ Consider lines to be terminated by DELIMITER.
+ Keep the delimiter; append DELIMITER if we reach EOF and it wasn't
+ the last character in the file. Do not NUL-terminate.
+ Return LINEBUFFER, except at end of file return NULL. */
+struct linebuffer *readlinebuffer_delim (struct linebuffer *linebuffer,
+ FILE *stream, char delimiter);
+
+/* Read an arbitrarily long line of text from STREAM into LINEBUFFER.
+ Keep the newline; append a newline if it's the last line of a file
+ that ends in a non-newline character. Do not NUL-terminate.
+ Return LINEBUFFER, except at end of file return NULL. */
+struct linebuffer *readlinebuffer (struct linebuffer *linebuffer, FILE *stream);
+
+/* Free linebuffer LINEBUFFER and its data, all allocated with malloc. */
+void freebuffer (struct linebuffer *);
+
+#endif /* LINEBUFFER_H */