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Notes: Add overlay-based cache idea

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Adam Porter 2019-12-30 22:45:31 -06:00
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@ -586,6 +586,10 @@ This works okay (except the priority accessor needs to be fixed, because Org pri
:action #'helm-org-goto-marker))))
#+END_SRC
** MAYBE Overlay-based caching inspired by org-num-mode
[2019-12-30 Mon 22:42] Newer versions of Org have =org-num-mode=, which uses =font-lock= and =after-change-functions= to update overlays in the buffer with outline numbering. Maybe a similar approach could be used to cache arbitrary values for headings in a buffer without having to discard the whole buffer's cache when the buffer changes.
** MAYBE [#C] Fancier searching for inherited tags
When tag inheritance is enabled, and the given tags aren't file-level tags, we could search directly to headings containing the matching tags, and then only do per-heading matching on the subtrees. Sometimes that would be much faster. However, that might make the logic special-cased and complicated. Might need a redesign of the whole matching/predicate system to do cleanly.