While trying to create a button that resets the *created* date on a
tiddler, I absentmindedly tried the following:
\define now-timestamp() <<now [UTC]YYYY0MM0DD0hh0mm0ssXXX>>
<$button set="!!created" setTo=<<now-timestamp>>>
Created Now
</$button>
Now, I'm aware this snippet doesn't work and can't be expected to because
the contents of *now-timestamp* aren't wikified when the macro call is
being used as a transcluded widget-attribute value. I've since produced a
correct version. However, I'm still confused about the result of clicking
the button: the *created* field was set to NaNNaNNaNNaNNaNNaNNaN. I'm
puzzled by what kind of calculation the *setTo* attribute of the $button
widget is doing that's able to create a bunch of concatenated NaNs. I would
have expected to simply get the literal text <<now
[UTC]YYYY0MM0DD0hh0mm0ssXXX>> in the field.
Is there something special about the *created* field in this regard?
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