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I'm running emacs GNU Emacs 24.2.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.10) on Ubuntu 12.04.

When I open an ansi-term (or term or multi-term) buffer, and use it for a few minutes, it starts to slow way down - there is a noticeable lag when typing characters.

I then open my *Messages* buffer and see this output:

Invalid face attribute :foreground nil
Invalid face attribute :background nil [6 times]
Invalid face attribute :foreground nil
Invalid face attribute :background nil [5 times]
Invalid face attribute :foreground nil
Invalid face attribute :background nil
Invalid face attribute :foreground nil
Invalid face attribute :background nil

(there are thousands of these invalid face attribute entries)

If I downgrade to emacs 24.0.* I don't see this issue.

Any thoughts on this issue are greatly appreciated.

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Does this happen if you change the color theme to something else? – wvxvw Oct 30 '12 at 14:06
Yes. I cleared my .emacs file - I get this problem in a completely vanilla emacs environment. If I apply a color theme, I get the same message. – Chris Oct 30 '12 at 14:10
A bit more information: I noticed that my .bashrc includes this alias: alias ls='ls --color=auto' . when I comment out all lines that relate to coloring the terminal text, the ansi-term error goes away. – Chris Oct 30 '12 at 14:20
If you find a problem in the development-version of Emacs (or any other package, for that matter) report it to the developers so they can fix it. I.e. M-x report-emacs-bug. – Stefan Oct 30 '12 at 14:45
Good idea. I didn't realize that 24.2.50.1 was a development version. I just compiled GNU Emacs 24.2.1 and the problem appears to be resolved. Thank you. – Chris Oct 30 '12 at 15:13

migrated from stackoverflow.com Oct 30 '12 at 14:30

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