Rerun only failed specs with tmux

You don't want to run your whole sweet again, just those failures?

Copy the bit below Failed examples: into your tmux buffer:

rspec ./spec/mailers/order_mailer_spec.rb:5 # OrderMailer reciept includes the support email and phone number
rspec ./spec/features/customer_checks_out_spec.rb:43 # customer checks out happy path
...

Now make command line args for rspec out of it:

tmux showb | ag -o '[^\s]+:\d+' | tr '\n' ' ' > rerun.txt

Run only this set of specs with xargs:

xargs rspec < rerun.txt

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