A collegue of mine needed a zero-width space[1] for a breaking a word at a specific place in the menu of a website, so I copy/pasted mA (last character of first line, first character of next line) from the Wikipedia example, pasted it in Geany and deleted the m and the A so that there would only be a zero-width space left to copy by using ctrl-a, ctrl-c.
Geany however crashed when there was only a zero-width space left in the document ;)
Dunno if this is worth looking at, though ;)
Cheers!
Harold