> Is the rationale explained anywhere? After a bit of poking around, it looks > like using the `:file` flag without a `file` argument to results doesn't do > anything (no file is created), nor does the reverse. That is, unless you use > both the `file` argument and the `:file` option, nothing happens. Is there a > situation where you can use `:file` to do something that doesn't require a > `file` argument to `:results`?
The specific commit where it happened was 26ed66b23335eb389f1f2859e409f46f66279e15, which says: "Deducing the results from some other arguments is not obvious. Moreover, it prevents users from setting, e.g., :file-ext, in a node property, as every block would then create a file." The commit also links to this thread: http://lists.gnu.org/r/emacs-orgmode/2018-05/msg00469.html I wasn't involved in that discussion, but I think the idea is that you could create a subtree with many named source blocks each creating a PNG file, set the :file-ext parameter at the subtree level, and have the file names auto-created from the source block names. > The documentation for ob-R is now incorrect: > > https://orgmode.org/worg/org-contrib/babel/languages/ob-doc-R.html Yes, also that page could use some other updates, e.g. there are some dead links in there.
