String line= fDocument.get(offset, offset + lineInfo.getLength()); int i= line.indexOf('=');
String line= fDocument.get(offset, lineInfo.getLength()); int i= line.indexOf(c);
		public boolean isWordStart(char c) {			if ('=' != c || fDocument == null)				return false;						try {				// check whether it is the first '='				IRegion lineInfo= fDocument.getLineInformationOfOffset(fOffset);				int offset= lineInfo.getOffset();				String line= fDocument.get(offset, offset + lineInfo.getLength());				int i= line.indexOf('=');				return i != -1 && i + lineInfo.getOffset() + 1 == fOffset;			} catch (BadLocationException ex) {				return false;			}		}