Yet another text formatting extension, because the others I tried didn't seem to work satisfactory.
This extension allows you to format text in online rich text editors, such as Gmail and TinyMCE. The formatting is achieved using some simple syntax followed by a keyboard shortcut.
This extension has two use cases:
1) You want to keep your fingers at the keyboard while formatting your text (instead of reaching for your mouse and clicking on buttons).
2) You want to use a formatting for which the rich text editor does not offer a button (try typing strike trough in gmail).
The formatting is achieved by pressing <ctrl>+<space> after typing a certain trigger character. For instance: -hello-<ctrl>+<space> will make the hello appear in strikethrough.
There is a popup cheat sheet with all formatting options when you click the extensions icon in the chrome toolbar.
It is not a goal for this extension to make it work for every rich text editor out there. It is currently only extensively tested in gmail.
 - https://mail.google.com
 - http://www.tinymce.com/tryit/full.php