question: private void replaceInternal ( Node node , String text , int length , int firstLineDelta ) { DelimiterInfo info = text == null ? null : nextDelimiterInfo ( text , 0 ) ; if ( info == null || info . delimiter == null ) { int added = text == null ? 0 : text . length ( ) ; updateLength ( node , added - length ) ; } else { int remainder = firstLineDelta - length ; String remDelim = node . delimiter ; int consumed = info . delimiterIndex + info . delimiterLength ; int delta = consumed - firstLineDelta ; updateLength ( node , delta ) ; node . delimiter = info . delimiter ; info = nextDelimiterInfo ( text , consumed ) ; while ( info != null ) { int lineLen = info . delimiterIndex - consumed + info . delimiterLength ; node = insertAfter ( node , lineLen , info . delimiter ) ; consumed += lineLen ; info = nextDelimiterInfo ( text , consumed ) ; } insertAfter ( node , remainder + text . length ( ) - consumed , remDelim ) ; } }
target:  Replace happening inside a single line.