thomasgriffin/TGM-Plugin-Activation — comment on commit 5a1f369a2ff4059f40278a7ea83da51d804d8433
File: tgm-plugin-activation/class-tgm-plugin-activation.php line 370
By GaryJones:

I would have gone with "plugin_activated", since someone who is just looking at a list of strings out of context won't understand what was successful. Installation? Activation? Recognised that a plugin was registered?