On Fri, Feb 22, 2019 at 12:54:54PM +0000, MacFH - C E Macfarlane wrote:
> >>--exclude blah # exclude blah and *only* blah
> >>--exclude +blah # exclude blah in addition to anything else
> However, there is a problem, perhaps two, with that particular syntax in
> GiP. The first is that the exclude option is a Regular Expression, so
> the + sign has a special meaning, and gives an RE error when used as
> above.
The + sign's special meaning is "one or more of the preceding character
or group". Which means that if you see it at the beginning it can't
possibly be a valid regex, so *must* have the special meaning of "add
the rest of this to the list of exclusions".
> The possible second is that on Windows machines + is a parameter
> separator for some commands, for example COPY.
That's a special feature of those commands, not a feature of Windows.
> A tilde ~ might be a good choice for this, as, AFAIK, it is inert in
> most operating systems; that is to say, I'm not aware of any special
> meaning attached to it within > command lines.
On its own it means the current user's home directory. Followed by other
text it means that user's home directory. Followed by nonsense that
doesn't match a username it's just a tilde:
$ echo ~
/home/dc
$ echo ~root
/root
$ echo ~macfh
~macfh
--
David Cantrell | Reality Engineer, Ministry of Information
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