[mahmud]

I wrote a long article and at the last paragraph, I decided to edit a sentence, I selected the "region" and pressed C-w to remove it :-(

For uninitiated, C-w is "yank text", i.e. cut it, and Firefox it is "close current tab without warning".

[vaporstun]

Firemacs, Firefox extension which gives emacs keybindings.

https://addons.mozilla.org/en-US/firefox/addon/4141

[parbo]

C-S-t in Firefox will bring it back. Don't know if the content of the text field remains though.

[mapleoin]

It does. It's not that hard to test.

[wingo]

Seems the keybindings skip direct to the semantics in your brain, without passing through verbose names; C-w would "kill" the text.

Still, your lapse is pretty good. Sometimes I can't even name the keys -- but my fingers know :)