"Wildcard has no match" exception is unergonomic

[tesujimath]

What new feature should Elvish have?

I see that the exception throwing by default when wildcards have no match was added some time ago in response to a real issue.

However, the behaviour we have now is rather awkward. For example, when wanting to delete any file matching some set of wildcards:

> ls
a  ab  abc
> rm -f ab* bc*
Exception: wildcard has no match
  [tty 38]:1:11-13: rm -f ab* bc*
> ls
a  ab  abc

> rm -f ab*[nomatch-ok] bc*[nomatch-ok]
> ls
a

Bash is much more convenient:

> bash
$ ls
a  ab  abc
$ rm -f ab* bc*
$ ls
a

Could there be room for a rethink here?

Output of "elvish -version"

0.21.0

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