Clarify unexpanded globs
Clarify unexpanded globs

Recursive globs (`**`) can't be relied upon, since the `globstar` option
isn't universally enabled (or even available).

Thus, the glob expression must be expanded by the tool itself.
Wrapping in single quotes clearly indicates the shell isn't doing the
expansion of the globs.

testdouble/scripty,testdouble/scripty