The actual parameter parsing logic in emacs org mode is quite complex [1]. All
we want for now is to handle parameter values containing spaces [2]. Splitting
on ` :` gets us close enough for now. As I'm very opposed to copying 100 lines
of parameter parsing logic just to get exports right let's wait for use cases -
no hurt in gathering requirements as we go.
[1] https://github.com/bzg/org-mode/blob/master/lisp/ob-core.el#L1481
[2] I never ran into such parameters before and wrongly assumed that splitting
on spaces would be enough. boy was i wrong - just look at that massive
function [1]! that's why we can't have nice things!
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