src/vs/editor/common/core/range.ts/Range/strictContainsPosition
class Range:	public static strictContainsPosition(range: IRange, position: IPosition): boolean {
		if (position.lineNumber < range.startLineNumber || position.lineNumber > range.endLineNumber) {
			return false;
		}
		if (position.lineNumber === range.startLineNumber && position.column <= range.startColumn) {
			return false;
		}
		if (position.lineNumber === range.endLineNumber && position.column >= range.endColumn) {
			return false;
		}
		return true;
	}