You can always directly input unicode hexcodes. The code for Ëš is 2DA. On Windows you press "ALT +(hexcode)", on most GTK software it's "CTRL-ALT-U (hexcode)". Sadly X doesn't support global unicode input out of the box, but as all things Linux there are about 5+e9 different ways to do it. No idea for OSX through.
Best way to go about it with X is to replace a seldom-used key with the Compose key [wikipedia.org]. Degrees is, for example, a three key sequence: compose, o, o. It also gives easy access to accents and other symbols that one might need occasionally, such as foreign currencies. Euro is "compose, e, =" as another example.
You can also add custom ones in your own compose file, too. I added a couple shortcuts for things like an infinity symbol.
(Score: 2) by Marand on Thursday March 20 2014, @02:27AM
Best way to go about it with X is to replace a seldom-used key with the Compose key [wikipedia.org]. Degrees is, for example, a three key sequence: compose, o, o. It also gives easy access to accents and other symbols that one might need occasionally, such as foreign currencies. Euro is "compose, e, =" as another example.
You can also add custom ones in your own compose file, too. I added a couple shortcuts for things like an infinity symbol.