Re: [BackupPC-users] Why does $share work but not ${share} in DumpPreShareCmd

[Jeffrey J. K. <bac...@ko...>]

Craig Barratt wrote at about 22:49:09 -0800 on Monday, November 9, 2009:
 > Jeffrey writes:
 > 
 > > Specifically, the following works
 > > $Conf{DumpPreShareCmd}    = 'mycommand $share $share/myfile';
 > > And indeed $share is substituted properly.
 > > but the following does not...
 > > $Conf{DumpPreShareCmd}    = 'mycommand $share ${share}/myfile';
 > > And instead it passes ${share} for the final argument.
 > > I would have thought that the braces would be treated properly whether
 > > in a perl or bash script.
 > 
 > The variable substitution is done via regular expressions, not
 > by perl eval().  The perl brace syntax isn't supported, although
 > you could add it pretty easily.

Thanks - that is good to know and maybe should be documented. Given
that much of the rest of the conf file takes arbitrary perl code, it
wasn't obvious to me that we were leaving the perl paradigm here.

It may be even better to add if it is pretty easy, since at least when
I see the $<variable>, I'm usually thinking either perl or bash
variables - both of which recognize the brace construction. So that
would eliminate such hopefully understandable confusion.