MS Font gives Square box glyphs in TextMorphs: why?

tim Rowledge tim at rowledge.org
Mon Sep 11 17:47:23 UTC 2006


On 11-Sep-06, at 9:37 AM, Ron Teitelbaum wrote:


> non printable characters.  It really doesn't matter to me, since the
> printing or not printing of boxes really has no benefit for me  
> either way,
> although consistency would be nice.
Actually I think it could well be very beneficial to see unprintable  
characters via some form of boxing. Consider copying and pasting a  
bit of apparently innocuous text to some other application, whether  
inside Squeak or outside. If you have a non-printable hidden in there  
but don't know it (because it shows nothing) then you may well get  
strange results, depending on how the recipient application treats,  
say, ctl-M.

If we want applications able to filter out undesirable characters  
then we should write filters to do the filtering. Pretending to do  
filtering by ignoring the characters at display rendering time is a  
bit like relying on obscurity for your security. It works sometimes  
and fails horribly at others. Often without you realising.

tim
--
tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
Strange OpCodes: RC: Rewind Core





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