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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_5qdr32u92ekjgje5neurv3nf7c, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
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<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
sclass LastLineBuffer {
  int lineCount;
  S lastLine, currentLine = "";
  
  void append(S s) {
    currentLine += s;
    int i;
    while ((i = currentLine.indexOf('\n')) >= 0) {
      // inefficient
      lastLine = substring(currentLine, 0, i);
      currentLine = substring(currentLine, i+1);
    }
  }
  
  S lastCompleteLine() { ret lastLine; }
}