zellij/commands: Prevent recursive sessions #1766
Merged
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with session names specified in layout files. A "recursive session" is created when, while running inside some zellij session, a user attempts to spawn zellij and make it attach to that same session.
When attaching via CLI (
zellij attach
) we explicitly check for this condition and error out when needed.However, besides
zellij attach
it is also possible to declare the session to attach to in layout files like so:This takes a different codepath when starting zellij, and hence bypases the checks we already have in place to avoid recursive sessions. Hence, we implement the check in the other codepath, too, and prevent recursive sessions from happening for good.
Fixes: #1735