Re: [PATCH 1/4] test-lib-functions: introduce test_line_count_cmd

Eric Sunshine [off-list ref] writes:

... However, the article does seem to say that such idioms and care may
still be warranted. In particular, the epilog gives an example which
is still relevant on macOS today. ...

At any rate, for those of us who are old-timers, the `"x$foo"` idiom
is habit and only costs a couple extra characters, so I for one have
no problem with its presence in the proposed patch.

Yes.  I think it is prudent to use the x-prefix idiom, especially
for the case cited upthread like comparing $1 with an exclamation
mark '!'.