When I have the cursor inside of the code block for the code, moving up or done one line or one page takes 2-3 seconds. Grant Rettke -- g...@wisdomandwonder.com | http://www.wisdomandwonder.com/ “Wisdom begins in wonder.” --Socrates “All creativity is an extended form of a joke.” --Kay ((λ (x) (x x)) (λ (x) (x x))) “Life has become immeasurably better since I have been forced to stop taking it seriously.” --Thompson
On Tue, Jul 21, 2015 at 6:09 AM, Angus M <anguscmelvi...@gmail.com> wrote: >> Post a Gist of your file so I can try it out. >> >> What is you value of `org-src-fontify-natively'? > >> Grant Rettke >> -- >> gcr <at> wisdomandwonder.com | http://www.wisdomandwonder.com/ >> “Wisdom begins in wonder.” --Socrates >> “All creativity is an extended form of a joke.” --Kay >> ((λ (x) (x x)) (λ (x) (x x))) >> “Life has become immeasurably better since I have been forced to stop >> taking it seriously.” --Thompson >> >> On Wed, Jul 15, 2015 at 7:22 AM, Angus M <anguscmelville <at> gmail.com> > wrote: >> > I've just discovered that the slow-response is definitely related to font >> > locking. If I type M-x font-lock-mode to toggle it off then the typing lag >> > problem is solved. >> > >> > According to the Emacs documentation: >> > 'In Emacs 21 and later, turning on font-lock-mode automatically activates >> > the new Just-In-Time fontification provided by jit-lock-mode.' >> > >> > It would appear, therefore, that just-in-time fontification is not taking >> > place in the code block with the whole code block being fontified at once - >> > and hence the delay. >> > >> > Any help to confirm this hypothesis and how to enable just-in-time >> > fontification in the code block would be appreciated. >> > >> > Angus M > > Thanks for your help. > > Any script of a significant length sandwiched as a snippet in org mode > between: > #+begin_src python > [code] > #+end_src > > causes the slow-down. > > For example the (arbitrarily chosen) file argparse.py found at > https://code.google.com/p/argparse > /downloads/detail?name=argparse-1.2.1.tar.gz&can=2&q= > is 2400 lines long, and causes a lag of about 1 or 2 seconds for a character > to appear on the screen after a key press. > > The issue is not to do with running the script, (which I haven't tried with > this example). > > My value for org-src-fontify-natively: > (setq org-src-fontify-natively t) > > This issue is of less importance to me now as I think it probably makes > sense to run any script of significant length as a stand-alone 'python mode' > file, which I'm now doing - rather than as a snippet in 'org mode'. > Therefore unless you're curious to solve this problem for its own sake, > please don't invest any significant time on trying to sort it out on my > behalf. Thanks!