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Re: base-files patch
- From: ericblake at comcast dot net (Eric Blake)
- To: cygwin at cygwin dot com
- Date: Fri, 25 Mar 2005 19:26:14 +0000
- Subject: Re: base-files patch
> On Fri, 25 Mar 2005, Eric Blake wrote:
> > 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.
True enough. And that points out another bug - echo "$0" may fail if $0 starts with -, it should be echo -- "$0". Isn't portable shell programming fun?
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