Hi Eric, Eric S Fraga wrote: > going back to the original subject of this thread (although thanks all for > your inputs on yasnippet ;-), I have started working on a new document and > am finding the slowdown of navigation (next-line) very annoying. In this > document, I have two gnuplot source blocks. Navigating through them, I get > the following results from elp: > > next-line 54 > 5.9466770000 0.1101236481 > previous-line 44 > 0.4350030000 0.0098864318 > org-encrypt-entries 1 > 0.000424 0.000424 > org-scan-tags 1 > 0.000368 0.000368 > org-make-tags-matcher 1 > 5.1e-05 5.1e-05 > org-activate-plain-links 1 > 2.4e-05 2.4e-05 > org-raise-scripts 1 > 2.1e-05 2.1e-05 > org-fontify-meta-lines-and-blocks 1 > 1.9e-05 1.9e-05 > org-font-lock-hook 1 > 1.9e-05 1.9e-05 > org-outline-level 5 > 1.9e-05 3.8e-06 > org-mode-flyspell-verify 14 > 1.8e-05 1.285...e-06 > org-inlinetask-fontify 1 > 1.5e-05 1.5e-05 > org-activate-footnote-links 1 > 1.5e-05 1.5e-05 > org-unfontify-region 1 > 1.2e-05 1.2e-05 > org-do-emphasis-faces 1 > 1.2e-05 1.2e-05 > org-activate-angle-links 1 > 1.2e-05 1.2e-05 > org-activate-dates 1 > 1.1e-05 1.1e-05 > org-fontify-entities 1 > 1.1e-05 1.1e-05 > > From these timings, the font locking doesn't seem to be the issue but maybe > the overlays are. However, commenting out the code that Sébastien Vauban > indicated: > >> Maybe this is (partly?) due to the overlay I added: >> >> #+begin_src emacs-lisp >> (overlay-put (make-overlay beg1 block-end) >> 'face 'org-block-background)) >> #+end_src
See http://patchwork.newartisans.com/patch/581/ for a full diff. You can see I only add *one* overlay: for the background face. > (well, commenting out the whole condition that includes this code) makes no > difference at all. I'm surprised. Good to hear, but as some were finger pointing the overlays, and as I added one for every block... But, OK, better like that! For the sake of completeness, know that I first tried to add the background fontification as a text property, but that made the other properties disappear (annihilating the native fontification in fact). No a solution, or I did not try the right way -- which is entirely possible, seen my poor knowledge on this subject (I have to admit I succeeded by trials and errors). > So, I turned off =org-src-fontify-natively= and things are back to > normal: next-line is as fast as previous-line. I can put up without the > fontification so this is what I am doing now. > > However, as it's a pity to lose the native fontification, it would be > nice to solve this problem in another way. Can anybody suggest any > other thing to try? Not that I can think of now. Sorry for not being of any help here. Best regards, Seb -- Sébastien Vauban
