tags-table-list-member
tags-table-list-member is a compiled Lisp function in `etags.el
'.
(tags-table-list-member FILE LIST)
Like (member FILE LIST) after applying `tags-expand-table-name'.
More precisely, apply `tags-expand-table-name' to FILE
and each element of LIST, returning the link whose car is the first match.
If an element of LIST is t, ignore it.