Regression in error messages when two args from a non-multiple group were passed

[CreepySkeleton]

This is what it used to look like:

error: The argument '--delete' cannot be used with '<base>'
USAGE:
    clap-test <base|--delete>
For more information try --help"

After #1856 has landed, it looks like

error: Found argument '--all' which wasn't expected, or isn't valid in this context
If you tried to supply `--all` as a PATTERN use `-- --all`
USAGE:
    clap-test <-a|--delete>
For more information try --help"

This is undesirable and must be corrected, but the bugfix is more important.

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[pksunkara]

@ldm0 Do you want this one next?

[ldm0]

Yep.

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@pksunkara has cancelled funding for this issue.(Cancelled amount: $20.00) See it on IssueHunt