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Idea is about a way to extend shell by additional command, like see-notes, save-notes, goto <directory-name>, plasma-alias, etc. We can do:
- Add shell activities support (different activity per konsole tab)
- Add Plasma activities support

The way we achieve this is rather simple - Konsole will set special environment variable, pointing to shell activity. By this variable and asking kactivity, given shell commands/extensions could get plasma activity for current console tab (activity for current console window in fact).

Value of this variable should been remember, when konsole exits (X session feature - possibly?).