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Use this page to discuss script 900 hanoi: Tower of Hanoi game for Vim

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Bug: Out of range errorsEdit

Hanoi gives out of range errors (list element -1) after moving the cursor to an empty pole, and stops. --June 20, 2011


I've also found the bug "Out of range errors" just like what's described in that bug report, read as "Hanoi gives out of range errors (list element -1) after moving the cursor to an empty pole, and stops."

To fix this bug, I've read the script and found a leak when process PoleMoveDisk. It forgot to determine the condition that the target pole to select (i.e. to move to) should have disks when selecting a pole!

So to fix it, I make up the condition determination in function! s:play() at row 266/271 in script file autoload/hanoi.vim by adding statement:

if > 0 and adding endif after statement call s:PoleSelectPole( to close if statement.

To be more robust, I add another condition determination statement in function! s:PoleSelectPole(newPole) at row 508 in script file autoload/hanoi.vim by adding && a:newPole.NOD() > 0 in the if statement if s:curpole != a:newPole . Of course, this supplement is optional if the above leak has been fixed.

Hope the author fix the bug and offer the latest copy for downloading. -- 05:39, November 23, 2011 (UTC)


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