TYPO3 Core

The current version with "exec()" works for me if you enclosure the path to files and command with a "":

Instead of:

$cmd = $GLOBALS['TYPO3_CONF_VARS']['BE']['diff_path'] . ' ' . $this->diffOptions . ' ' . $file1 . ' " . $file2 . '';

do this:

$cmd = '"' . $GLOBALS['TYPO3_CONF_VARS']['BE']['diff_path'] . '" ' . $this->diffOptions . ' "' . $file1 . '" "' . $file2 . '"';

Then I installed UnxUtils with diff.exe...

complete code:

/**
 * This class has functions which generates a difference output of a content string
 *
 * @author    Kasper Skårhøj <kasperYYYY@typo3.com>
 * @package TYPO3
 * @subpackage t3lib
 */
class t3lib_diff {
...
    /**
     * Produce a diff (using the "diff" application) between two strings
     * The function will write the two input strings to temporary files, then execute the diff program, delete the temp files and return the result.
     *
     * @param    string        String 1
     * @param    string        String 2
     * @return    array        The result from the exec() function call.
     * @access private
     */
    function getDiff($str1, $str2) {
            // Create file 1 and write string
        $file1 = t3lib_div::tempnam('diff1_');
        t3lib_div::writeFile($file1, $str1);
            // Create file 2 and write string
        $file2 = t3lib_div::tempnam('diff2_');
        t3lib_div::writeFile($file2, $str2);
            // Perform diff.
        $cmd = '"' . $GLOBALS['TYPO3_CONF_VARS']['BE']['diff_path'] . '" ' . $this->diffOptions . ' "' . $file1 . '" "' . $file2 . '"';
        $res = array();
        t3lib_utility_Command::exec($cmd, $res);

        unlink($file1);
        unlink($file2);

        return $res;
    }

The issue is very old, does this issue exists in newer versions of TYPO3 CMS (4.5 or 6.1)?

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