Hello,
A user needs to support having gopher links in Org document:
[[gopher://some.gopher.site][Dummy gopher link]]
But the export fails saying that it's unable to resolve the link.
The behavior can be easily recreated by exporting a document containing that dummy link using C-c C-e h H.
I added "gopher" to the org-html-link function, but that obviously didn't help.
I traced the error to org-export-data in ox.el, but I cannot edebug that function; I get:
edebug-syntax-error: Invalid read syntax: "Failed matching", (&rest (&define name (&rest arg) cl-declarations-or-string def-body))