/*
 * fstrcmp - fuzzy string compare library
 * Copyright (C) 2009 Peter Miller
 * Written by Peter Miller <pmiller@opensource.org.au>
 *
 * 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/>.
 */

/*
 * This is the project ``config'' file.  It controls many aspects of
 * how Aegis interacts with your project.
 */

/*
 * Compare two files using GNU diff.  The -U -1 option produces an output
 * with inserts and deletes shown line, with the whole file as context.
 * This is usually superior to -c, as it shows what happened
 * more clearly (and it takes less space).  The -b option could be added
 * to compare runs of white space as equal.
 *
 * This command is used by aed(1) to produce a difference listing when
 * file in the development directory was originally copied from the
 * current version in the baseline.
 *
 * All of the command substitutions described in aesub(5) are available.
 * In addition, the following substitutions are also available:
 *
 * ${ORiginal}
 *      The absolute path name of a file containing the version
 *      originally copied.  Usually in the baseline.
 * ${Input}
 *      The absolute path name of the edited version of the file.
 *      Usually in the development directory.
 * ${Output}
 *      The absolute path name of the file in which to write the
 *      difference listing.  Usually in the development directory.
 *
 * An exit status of 0 means successful, even of the files differ (and
 * they usually do).  An exit status which is non-zero means something
 * is wrong.  (So we need to massage the exit status, because diff does
 * things a little differently.)
 *
 * The non-zero exit status may be used to overload this command with
 * extra tests, such as line length limits.  The difference files must
 * be produced in addition to these extra tests.
 */
diff_command =
    "set +e; "
    "diff -U -1 -a ${quote $original} ${quote $input} > ${quote $output}; "
    "test $? -le 1"
    ;
