check variable content size in sh script

[Quartz]

>#foo works with sh

Is it actually part of the official spec though is what I'm wondering, 
or is it a case of other shells not rejecting 'advanced' statements when 
running in emulation.


> At least FreeBSD's implementation of sh (which is ash, I think)
> supports the # functionality.

The reason I say all this is that my copy of tcsh (on this not-freebsd 
machine) *doesn't* work with this when in sh emulation.

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