Emacs glasses-mode made me smile

Emacs glasses-mode is a delightful minor mode that helps you read “unreadable” identifiers like ThisIsPascalCase by inserting virtual underscores between pairs of lower and upper case letters, so it displays like this instead: This_Is_Pascal_Case.

Isn’t that neat? I found it while reading Mastering Emacs, and then I found myself grinning. But wait, there’s more, because when glasses-mode is active a pair of cute glasses shows up in the mode line, try it!