Short note to all the Collections experts out there: RunArray >> #copyFrom:to: does not raise an error if a too large stop value is passed. As a consequence, code like this does not raise an error by itself but silently forwards the defect to the CompositionScanner while rendering the text:

	'foo' asText addAttribute: TextEmphasis bold from: 2 to: 5; edit

Maybe someone has the knowledge and energy to get these things a little bit more robust. :-)

Best,
Christoph

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