Issue 5254 in pharo: Fast Scroll Down produces weird events

Status: Accepted
Owner: [hidden email]

New issue 5254 by [hidden email]: Fast Scroll Down produces weird  
events
http://code.google.com/p/pharo/issues/detail?id=5254

When scrolling down fast on a mac I don't exclusively get scroll down  
events, but from time to time a ctrl-left

Normal scroll produces the following event pattern:

[keyDown '<Ctrl-}>']
[keyUp '<Ctrl-}>']
[keyDown '<Ctrl-}>']
[keyUp '<Ctrl-}>']
...

Fast Scroll introduces one or more of these broken pattern:

[keyDown '<Ctrl-}>']
[keyUp '<Ctrl-}>']
[keyDown '<Ctrl-{>']
[keyUp '<Ctrl-{>']
[keystroke '<Ctrl-left>']
[keystroke '<Ctrl-left>']
[keyUp '<Ctrl-}>']

... normal sequence following ...

fast scrolling on  a list has the effect that the list jumps to the last  
cursor position due to the inserted ctrl-left.


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Comment #1 on issue 5254 by [hidden email]: Fast Scroll Down  
produces weird events
http://code.google.com/p/pharo/issues/detail?id=5254

Smalltalk vm version

  'CoInterpreter VMMaker-oscog-EstebanLorenzano.139 uuid:  
5aa53979-d7d8-4ca3-91fe-cfc3b4109c33 Dec  4 2011,  
StackToRegisterMappingCogit VMMaker-oscog-EstebanLorenzano.139 uuid:  
5aa53979-d7d8-4ca3-91fe-cfc3b4109c33 Dec  4 2011,  
https://git.gitorious.org/~estebanlm/cogvm/cog-osx.git Commit:  
ba737db8e171ade42fc4a493ffe1b3a5ec1ed397 Date: Sat Dec 3 21:56:37 2011  
-0300 By: Esteban Lorenzano <[hidden email]>'


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Comment #2 on issue 5254 by [hidden email]: Fast Scroll Down  
produces weird events
http://code.google.com/p/pharo/issues/detail?id=5254

same behavior found in

  'StackInterpreter VMMaker-oscog-EstebanLorenzano.139 uuid:  
5aa53979-d7d8-4ca3-91fe-cfc3b4109c33 Nov 12 2011, nil,  
https://git.gitorious.org/~estebanlm/cogvm/cog-osx.git Commit:  
9072d944a978a31ca36c61acb54dd87494676f20 Date: Sat Nov 12 13:26:17 2011  
-0300 By: Esteban Lorenzano <[hidden email]>'


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Comment #3 on issue 5254 by [hidden email]: Fast Scroll Down  
produces weird events
http://code.google.com/p/pharo/issues/detail?id=5254

and also in Squeak 5.7.4


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