Support hiding complete source blocks about org-present

[alwyn]

Of course there is an easy workaround for my case which is to generate the images externally.

[Inc0n]

It may be worthy consider using a workaround, i.e. to collaspe all src blocks when org-present is enabled.

[eyJhb]

I've made this, which does not hide it, but just folds it.

  (defun eyjhb/org-present-hide-plantuml ()
    (interactive)
    (beginning-of-buffer)
    (while (re-search-forward "begin_src plantuml" nil t) (org-fold-hide-block-toggle t)))

Could be run as a hook or something. Still trying to figure out how I want everything to work, but thought this might be useful for someone else.

This is ran after the buffer is narrowed.