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# extend-fname.c: give a filename a suffix, if necessary.
#
# Copyright (C) 1992, 1993, 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/>.
#
#include "config.h"
/* We may or may not return NAME. It's up to the caller not to assume
the return value is modifiable. */
string
extend_filename P2C(const_string, name, const_string, default_suffix)
{
string new_s;
const_string suffix = find_suffix (name);
new_s = suffix == NULL ? concat3 (name, ".", default_suffix)
: (string) name;
return new_s;
}
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