Note that webfakes uses PERL regular expressions.
new_regexp(x)String with class webfakes_regexp.
As R does not have data type or class for regular expressions,
you can use new_regexp() to mark a string as a regular expression,
when adding routes.
The 'Path specification' and 'Path parameters' chapters
of the manual of new_app().
new_regexp("^/api/match/(?<pattern>.*)$")
#> <webfakes_regexp> "^/api/match/(?<pattern>.*)$"