Bug 130043 [Forms] Content is not allowed in prolog.
When specifying non-"HTML" text to FormText.setText() where parseTags is true "[Fatal Error] :1:1: Content is not allowed in prolog." will be output to stderr. The cause is FormTextModel.parseInputStream() is not setting an error handler on the parser (by default errors are reported to stderr). There are a number of bug reports against Eclipse in general where this type of error is seen (and most of them have been marked as "can't reproduce"). Could someone push out a general announcement to the dev team stating that whenever an XML parser is used, an error handler needs to be set so that these messages don't default to the console?
bundles/org.eclipse.ui.forms/src/org/eclipse/ui/internal/forms/widgets/FormTextModel.java
}
	}
	private boolean isIgnorableWhiteSpace(String text, boolean ignoreSpaces) {
		for (int i = 0; i < text.length(); i++) {
			char c = text.charAt(i);
			if (ignoreSpaces && c == ' ')
				continue;
			if (c == '\n' || c == '\r' || c == '\f')
				continue;
			return false;
		}
		return true;
	}
	private ImageSegment processImageSegment(Node image) {
		ImageSegment segment = new ImageSegment();
		processObjectSegment(segment, image, "i."); 
		return segment;
	}
	private ControlSegment processControlSegment(Node control) {
		ControlSegment segment = new ControlSegment();
		processObjectSegment(segment, control, "o."); 
		Node fill = control.getAttributes().getNamedItem("fill"); 
		if (fill!=null) {
			String value = fill.getNodeValue();
			boolean doFill = value.equalsIgnoreCase("true"); 
			segment.setFill(doFill);
		}
		try {
			Node width = control.getAttributes().getNamedItem("width"); 
			if (width!=null) {