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bug#11047: 24.0.94; Hangs when creating buffer starting with multiple sp


From: Eli Zaretskii
Subject: bug#11047: 24.0.94; Hangs when creating buffer starting with multiple spaces and there exists buffers with multiple spaces
Date: Tue, 20 Mar 2012 19:52:18 +0200

> From: Charles Magid <address@hidden>
> Date: Tue, 20 Mar 2012 09:37:11 -0400
> 
> 1. Started emacs on mac os x lion 10.7.3
> 2. Started shell M-x shell
> 3. Created buffer with very long text name starting with 4 spaces
>    c-x b c-q spc c-q spc c-q spc c-q spc Now, start the server and you are 
> ready to sign in and sign out. You can also block user access in any 
> controller by calling authenticate_user! in a before filter. Just remember 
> that, if you add the filter to your application controller, remember to skip 
> the filter on the sessions controller, otherwise you won’t be able to sign in 
> in the first place.
> 4. confirm with a 'return'
> 5. Repeat with slightly more spaces and complex buffer name
>     c-x b c-q spc c-q spc c-q spc c-q spc c-q spc c-q spc You can now freely 
> proceed to implement the other controllers and views in your application. 
> Keep in mind that if you have devise :recoverable in your model, all the 
> related methods like User.send_reset_password_instructions will already be 
> available in your model, so you can use them straight away to implement your 
> own reset password feature. Since Devise use all those methods internally, if 
> you have any questions about implementing your own reset password feature, 
> you can always take a look at Devise own controllers for some help.
>      confirm by 'return'
>  6. Emacs hangs using ~100% of cpu

FWIW, I cannot reproduce this on MS-Windows with yesterday's trunk.
Emacs doesn't hang for me after doing all these steps.






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