User:Enterprisey/copy-section-link
Section headers, on hover, have a pilcrow (¶ symbol) that, when clicked, shows a popup with an appropriate wikilink and external link. Very similar idea to User:Bility/copySectionLink (from which a little code was copied), but this script also shows a wikilink instead of just the external link, and also lets you get the permalink.
Usage
Add the following code to your common.js to get rid of those square brackets.
window.copySectionLinkNoSquareBrackets = true;