ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
(visible only on this page)

include::../message.adoc[]

=== Parameters

.regexp
****

----
[a-zA-Z]([a-zA-Z_]*[a-zA-Z])?
----

The regular expression package names should match.
****

'''

endif::env-github,rspecator-view[]