nested shells on set default-command

[Hovnatan Karapetyan]

When I use set-option -g default-command "${SHELL}" in my config (to avoid opening login shells) I get nested (fish) shells on tmux new-session:

|-tmux: server(40577)-+-fish(40755)---fish(40809)

|                     `-fish(41032)---fish(41035)

Is there a way to avoid this behaviour?

Thanks!

[topcat]

I don't run fish but am unable to reproduce this with bash. Can something in the fish config cause this?

[Hovnatan Karapetyan]

I'm not sure what the problem was but, as per suggestion from Nicholas Marriott now I use "exec $SHELL" and the problem is gone.

Thanks!

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[Nicholas Marriott]

exec tells the shell to replace itself with the command rather than
running it then waiting around for it to exit.

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