I tried to set my editor to `termite -e "vim -f {}"`, termite being a
pretty cool and light terminal I use within my i3wm Arch linux box.
So when I open my editor I want it to launch a terminal with Vim inside
instead of GVim for various reasons.
The validation rejected this at first because it was looking for '{}'
inside ['foo', 'bar', 'baz {}'], essentially. So I need it to look
inside the sub-strings, not just the list.
Then after validation I need to perform the '{}' replacement inside the
sub-string too, not just replacing the whole string.
e9128ebb2a