Hi, I've noticed that org-map-entries calls org-agenda-prepare-buffers whenever its SCOPE argument is nil. According to the docstring, a nil SCOPE means, "The current buffer, respecting the restriction if any," so it doesn't seem necessary to call org-agenda-prepare-buffers.
I noticed this because I have a function in my org-mode-hook that runs org-map-entries (applying a read-only property to entries with a read_only tag), and whenever I find-file on a non-existent Org file, I'm prompted, "Non-existent agenda file %s. [R]emove from list or [A]bort?", which is caused by org-map-entries being called with a nil SCOPE, which calls org-agenda-prepare-buffers, which calls org-check-agenda-file on the not-yet-existent file. So if this behavior is indeed unnecessary, it would be nice to fix it. Is this a bug, or am I missing something? Thanks.
