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Re: Default behaviour of 'ifconfig'
>> The "?" flag is not a model of usability itself: it does not work
>> consistently across shells unless you backslash-escape it.
> You are supposed to know how globbing works in your shell. Otherwise
> PEBKAC, and it is not the "?"'s fault.
But choosing a character that is a metacharacter in practically every
shell, with behaviour widely known to be inconsistent, as the magic
flag is...bad design, really.
I normally use -_ when I want a deliberately erroneous flag to provoke
a usage message. I don't know of any shell under which that needs
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