Now command, jobs, type, abbr, builtin, functions and set take `-q` to
query for existence, but the long option is inconsistent.
The first three use `--quiet`, the latter use `--query`. Add `--query`
to the first three, but keep `--quiet` around.
Fixes#7276.
This, together with the other testX, really just tests some basic
syntax. So let's just call it "basic".
Note that this file uses escaped newlines on purpose, so restyling it
would currently break it. I'm not sure what the best thing to do here is.