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Date: Thu, 15 May 2014 10:51:53 +0200
From: Georg Bauhaus <rm-host.bauhaus@maps.futureapps.de>
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On 14/05/14 23:42, Robert A Duff wrote:
> I don't like having to squint to tell the difference between
> (say) "one million" and "ten million".  I wonder why most languages
> don't support that feature -- it's trivial.

If initial exposition to lexing means learning by imitation,
then one typically learns, very early:
    "digit { digit }" for integers, and then
    some rules for floats, composed of integers around '.'.
Readability will be a distraction, pedagogically shifting focus.

But '_' in number literals should be a good exercise! Maybe that's
a way to get '_' into education, thus into more languages.