RE: [External] : Re: Bookmarks in registers

[Drew Adams]

> How is this different from `point-to-register' and `jump-to-register'?

OP answered that this way:

  "the problem with these is that if the buffer in-question changes, then 
running register-to-point will not take you where you want to go. E.g., if you 
run point-to-register inside an *info* buffer, and then move the buffer to some 
other info page, then this will not take you back to the original info page."
_______

On the other hand, the OP motivation also says:

  "you can just use a regular bookmark instead, but then you must name the 
bookmark, and then the bookmark clutters up your list of bookmarks. What I want 
is to be able to store an anonymous bookmark in a register, which is handy if 
you only need a bookmark for a little while."

FWIW, Bookmark+ autonamed bookmarks take care of not needing to provide 
bookmark names etc.  And bookmarks can be temporary.

https://www.emacswiki.org/emacs/BookmarkPlus#AutonamedBookmarks