[racket-dev] Fwd: Re: [racket] Couldn't find a step matching that criterion

On Jan 9, 2011, at 5:57 PM, David Van Horn wrote:

> Why are the "< Step" and "Step >" buttons enabled when there are no steps to take in a given direction?  The "Couldn't find a step matching that criterion" message seems awfully confusing for a beginner.  If the buttons are going to be enabled, something along the lines of "There are no further steps to take" and "There are no previous steps to take" would be better, IMO.

Okay, I've made these messages more specific, by parameterizing over the fail-message associated with each operation.  Let me know if you have other suggestions.

John Clements

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