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[Bug 818642] Re: response to typing is very slow with code highlight with some files

 

I'm experiencing the same with LaTeX files having long lines!

If I change the highlighting, for instance, to .ini or a lot of other
languages, the long delays go away when inserting text at the beginning
of the line.

I created an example for testing (cf. attachment). Try to insert some
characters at the beginning of the line.

Thanks a lot in advance!

** Attachment added: "Test file for LaTeX"
   https://bugs.launchpad.net/ubuntu/+source/gedit/+bug/818642/+attachment/2471258/+files/test.tex

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https://bugs.launchpad.net/bugs/818642

Title:
  response to typing is very slow with code highlight with some files

Status in “gedit” package in Ubuntu:
  Confirmed

Bug description:
  When editing files with code highlight mode set to "php" (maybe the
  same happens with other modes too), gedit sometimes is ridiculously
  slow to respond to typing. That is, when you type, the text you type
  appears with a very noticeably (and annoying) delay.

  This seems to happen with some particular files more than others, so I
  attach one particular file with which I experience the issue. I guess
  the issue is triggered by some syntax pattern. I have some much bigger
  files that don't cause any trouble when editing them, so it is not
  just a matter of file size.

  It is reasonable to expect that code highlighting increases cpu consumption, but definitely not that much.
  I've used a few other editors with code highlight and NEVER seen one become so slow even with files a lot bigger than this

  And even if computing the highlight had a critical cost, then more
  priority should be given to typing response than to computing the
  highlights, e.g. by only recomputing highlighting when the keyboard is
  idle for a given fraction of a second or (if this doesn't happen)
  every n-th character and not for every single character, etc

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: gedit 2.30.3-1ubuntu1
  ProcVersionSignature: Ubuntu 2.6.35-30.54-generic 2.6.35.13
  Uname: Linux 2.6.35-30-generic i686
  NonfreeKernelModules: nvidia
  Architecture: i386
  Date: Sat Jul 30 22:35:40 2011
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: gedit

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