Hi, Yes, the method is called again by the printing code. For this, there is #haltOnce. put Halt once. and enable it via the system menu (or Halt enableHaltOnce). Marcus On Mar 4, 2013, at 7:41 PM, Paul DeBruicker <pdebruic@gmail.com> wrote:

If in Pharo-1.4 I put a halt in a printOn: method (e.g. Interval>>#printOn: ) and then printIt

Interval from: 0 to: 200

I get an endless loop of

Halt Interval(Object)>>halt Interval>>printOn: Interval(Object)>>printStringLimitedTo: in Block: [:s | self printOn: s] String class(SequenceableCollection class)>>streamContents:limitedTo: Interval(Object)>>printStringLimitedTo: MethodContext>>printDetails: in Block: [receiver printStringLimitedTo: 90] BlockClosure>>on:do: BlockClosure>>ifError: MethodContext>>printDetails: MethodContext(ContextPart)>>errorReportOn: Halt Interval(Object)>>halt Interval>>printOn: Interval(Object)>>printStringLimitedTo: in Block: [:s | self printOn: s] String class(SequenceableCollection class)>>streamContents:limitedTo: Interval(Object)>>printStringLimitedTo: MethodContext>>printDetails: in Block: [receiver printStringLimitedTo: 90] BlockClosure>>on:do: BlockClosure>>ifError: MethodContext>>printDetails: MethodContext(ContextPart)>>errorReportOn: Halt Interval(Object)>>halt Interval>>printOn: Interval(Object)>>printStringLimitedTo: in Block: [:s | self printOn: s] String class(SequenceableCollection class)>>streamContents:limitedTo: Interval(Object)>>printStringLimitedTo: MethodContext>>printDetails: in Block: [receiver printStringLimitedTo: 90] BlockClosure>>on:do: BlockClosure>>ifError: MethodContext>>printDetails: MethodContext(ContextPart)>>errorReportOn:

Is there a common way to debug printing statements?

Thanks

Paul