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/* extend-fname.c: give a filename a suffix, if necessary.
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Copyright 1992, 93 Karl Berry.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <kpathsea/config.h>
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/* We may or may not return NAME. It's up to the caller not to assume
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the return value is modifiable. */
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extend_filename P2C(const_string, name, const_string, default_suffix)
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const_string suffix = find_suffix (name);
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new_s = suffix == NULL ? concat3 (name, ".", default_suffix)