prolog:xref_open_source(+SourceID, -Stream)[multifile, library(prolog_source)]

Hook to open an xref SourceID. This is used for cross-referencing non-files, such as XPCE buffers, files from archives, git repositories, etc. When successful, the corresponding prolog:xref_close_source/2 hook is called for closing the source.

 prolog:xref_open_source(+Source, -Stream)[multifile, library(pce_prolog_xref)]

Open the PceEmacs as a Prolog stream.