project = $request->project;
        $this->request = $request;
        $this->scm = IDF_Scm::get($request->project);
        if ($wordwrap) $text = wordwrap($text, 69, "\n", true);
        if ($esc) $text = Pluf_esc($text);
        if ($autolink) {
            $text = preg_replace('#([a-z]+://[^\s\(\)]+)#i',
                                 '\1', $text);
        }
        if ($request->rights['hasIssuesAccess']) {
            $text = preg_replace_callback('#(issues?|bugs?|tickets?)\s+(\d+)((\s+and|\s+or|,)\s+(\d+)){0,}#im',
                                          array($this, 'callbackIssues'), $text);
        }
        if ($request->rights['hasSourceAccess']) {
            $text = preg_replace_callback('#(commit\s+)([0-9a-f]{1,40})#im',
                                          array($this, 'callbackCommit'), $text);
            $text = preg_replace_callback('#(src:)([^\s\(\)]+)#im',
                                          array($this, 'callbackSource'), $text);
        }
        if ($nl2br) $text = nl2br($text);
        if ($echo) {
            echo $text;
        } else {
            return $text;
        }
    }
    /**
     * General call back for the issues.
     */
    function callbackIssues($m)
    {
        if (count($m) == 3) {
            $issue = new IDF_Issue($m[2]);
            if ($issue->id > 0 and $issue->project == $this->project->id) {
                return $this->linkIssue($issue, $m[1].' '.$m[2]);
            } else {
                return $m[0]; // not existing issue.
            }
        } else {
            return preg_replace_callback('/(\d+)/', 
                                         array($this, 'callbackIssue'), 
                                         $m[0]); 
        }
    }
    /**
     * Call back for the case of multiple issues like 'issues 1, 2 and 3'.
     *
     * Called from callbackIssues, it is linking only the number of
     * the issues.
     */
    function callbackIssue($m)
    {
        $issue = new IDF_Issue($m[1]);
        if ($issue->id > 0 and $issue->project == $this->project->id) {
            return $this->linkIssue($issue, $m[1]);
        } else {
            return $m[0]; // not existing issue.
        }
    }
    function callbackCommit($m)
    {
        if ($this->scm->testHash($m[2]) != 'commit') {
            return $m[0];
        }
        $co = $this->scm->getCommit($m[2]);
        return ''.$m[1].$m[2].'';
    }
    function callbackSource($m)
    {
        $branches = $this->scm->getBranches();
        if (count($branches) == 0) return $m[0];
        $file = $m[2];
        if ('commit' != $this->scm->testHash($branches[0], $file)) {
            return $m[0];
        }
        $request_file_info = $this->scm->getFileInfo($file, $branches[0]);
        if (!$request_file_info) {
            return $m[0];
        }
        if ($request_file_info->type != 'tree') {
            return $m[1].''.$m[2].'';
        }
        return $m[0];
    }
    /**
     * Generate the link to an issue.
     *
     * @param IDF_Issue Issue.
     * @param string Name of the link.
     * @return string Linked issue.
     */
    public function linkIssue($issue, $title)
    {
        $ic = (in_array($issue->status, $this->project->getTagIdsByStatus('closed'))) ? 'issue-c' : 'issue-o';
        return ''.Pluf_esc($title).'';
    }
}