public HighlightRuleSet(XmlElement el)
        {
            XmlNodeList nodes;

            if (el.Attributes["name"] != null)
            {
                Name = el.Attributes["name"].InnerText;
            }

            if (el.HasAttribute("escapecharacter"))
            {
                escapeCharacter = el.GetAttribute("escapecharacter")[0];
            }

            if (el.Attributes["reference"] != null)
            {
                reference = el.Attributes["reference"].InnerText;
            }

            if (el.Attributes["ignorecase"] != null)
            {
                ignoreCase = Boolean.Parse(el.Attributes["ignorecase"].InnerText);
            }

            for (int i = 0; i < Delimiters.Length; ++i)
            {
                delimiters[i] = false;
            }

            if (el["Delimiters"] != null)
            {
                string delimiterString = el["Delimiters"].InnerText;
                foreach (char ch in delimiterString)
                {
                    delimiters[(int)ch] = true;
                }
            }

//			Spans       = new LookupTable(!IgnoreCase);

            keyWords    = new LookupTable(!IgnoreCase);
            prevMarkers = new LookupTable(!IgnoreCase);
            nextMarkers = new LookupTable(!IgnoreCase);

            nodes = el.GetElementsByTagName("KeyWords");
            foreach (XmlElement el2 in nodes)
            {
                HighlightColor color = new HighlightColor(el2);

                XmlNodeList keys = el2.GetElementsByTagName("Key");
                foreach (XmlElement node in keys)
                {
                    keyWords[node.Attributes["word"].InnerText] = color;
                }
            }

            nodes = el.GetElementsByTagName("Span");
            foreach (XmlElement el2 in nodes)
            {
                Spans.Add(new Span(el2));

                /*
                 * Span span = new Span(el2);
                 * Spans[span.Begin] = span;*/
            }

            nodes = el.GetElementsByTagName("MarkPrevious");
            foreach (XmlElement el2 in nodes)
            {
                PrevMarker prev = new PrevMarker(el2);
                prevMarkers[prev.What] = prev;
            }

            nodes = el.GetElementsByTagName("MarkFollowing");
            foreach (XmlElement el2 in nodes)
            {
                NextMarker next = new NextMarker(el2);
                nextMarkers[next.What] = next;
            }
        }
        /// <summary>
        /// pushes the curWord string on the word list, with the
        /// correct color.
        /// </summary>
        void PushCurWord(IDocument document, ref HighlightColor markNext, List <TextWord> words)
        {
            // Svante Lidman : Need to look through the next prev logic.
            if (currentLength > 0)
            {
                if (words.Count > 0 && activeRuleSet != null)
                {
                    TextWord prevWord = null;
                    int      pInd     = words.Count - 1;
                    while (pInd >= 0)
                    {
                        if (!((TextWord)words[pInd]).IsWhiteSpace)
                        {
                            prevWord = (TextWord)words[pInd];
                            if (prevWord.HasDefaultColor)
                            {
                                PrevMarker marker = (PrevMarker)activeRuleSet.PrevMarkers[document, currentLine, currentOffset, currentLength];
                                if (marker != null)
                                {
                                    prevWord.SyntaxColor = marker.Color;
//									document.Caret.ValidateCaretPos();
//									document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.SingleLine, document.GetLineNumberForOffset(document.Caret.Offset)));
                                }
                            }
                            break;
                        }
                        pInd--;
                    }
                }
                if (isFirstWord && !inSpan)
                {
                    HighlightColor c = GetColorFor("FirstWord");
                    words.Add(new TextWord(document, currentLine, currentOffset, currentLength, c, true));
                }
                else if (inSpan)
                {
                    HighlightColor c = null;
                    bool           hasDefaultColor = true;
                    if (activeSpan.Rule == null)
                    {
                        c = activeSpan.Color;
                    }
                    else
                    {
                        c = GetColor(activeRuleSet, document, currentLine, currentOffset, currentLength);
                        hasDefaultColor = false;
                    }

                    if (c == null)
                    {
                        c = activeSpan.Color;
                        if (c.Color == Color.Transparent)
                        {
                            c = this.DefaultTextColor;
                        }
                        hasDefaultColor = true;
                    }
                    words.Add(new TextWord(document, currentLine, currentOffset, currentLength, markNext != null ? markNext : c, hasDefaultColor));
                }
                else
                {
                    HighlightColor c = markNext != null ? markNext : GetColor(activeRuleSet, document, currentLine, currentOffset, currentLength);
                    if (c == null)
                    {
                        words.Add(new TextWord(document, currentLine, currentOffset, currentLength, this.DefaultTextColor, true));
                    }
                    else
                    {
                        words.Add(new TextWord(document, currentLine, currentOffset, currentLength, c, false));
                    }
                }
                if (activeRuleSet != null)
                {
                    NextMarker nextMarker = (NextMarker)activeRuleSet.NextMarkers[document, currentLine, currentOffset, currentLength];
                    if (nextMarker != null)
                    {
                        if (nextMarker.MarkMarker && words.Count > 0)
                        {
                            TextWord prevword = ((TextWord)words[words.Count - 1]);
                            prevword.SyntaxColor = nextMarker.Color;
                        }
                        markNext = nextMarker.Color;
                    }
                    else
                    {
                        markNext = null;
                    }
                }
                currentOffset += currentLength;
                currentLength  = 0;
            }
        }