Info-virtual-fun

Info-virtual-fun is a compiled Lisp function in `info.el'.

(Info-virtual-fun OP FILENAME NODENAME)

Find a function that handles operations on virtual manuals.
OP is an operation symbol (`find-file', `find-node' or `toc-nodes'),
FILENAME is a virtual Info file name, NODENAME is a virtual Info
node name. Return a function found either in `Info-virtual-files'
or `Info-virtual-nodes'.