When the 'set' command is used without any switches, the lookup happens
within whichever table is found for the option being set. Usually this
isn't a problem, since missing -t flags assume a valid context. However,
when a 'set' command is read from a config file, especially at startup, then
the
From: Thomas
As with the neww command, this adds a -c option to specify the starting
directory of the session. This means default-path '-' is honored correctly
without the need to first cd to the directory and start the tmux session from
there.
I personally don't care either way for this patch,
