On Fri, 25 Mar 2005, Eric Blake wrote:
> > In fact, in this particular case,
> > it's probably better to use "``" instead of `""`, IMO.
>
> No, "`echo $0|tr ...`" does the wrong thing if $0 is "two spaces/sh" (it
> passes just one space to tr, instead of two), while `echo "$0"|tr ...`
> works correctly.
In *this particular* case, the value will be compared with a constant set
of space-free values, so the number of spaces doesn't matter -- it still
won't match any values from that set... :-)
In general you're correct -- quoting is a way of preserving spaces, among
other things.
Igor
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