From the standpoint of clarity and maintainability, I'm not sure what you have now | in the OP isn't really best. But if you want an "all in one regex" solution, try something like: 

c:\@Work\Perl\monks>perl -wMstrict -le
"my $s = 'aZaXaYa';
 ;;
 print 'all there' if $s =~ m{ \A (?= .*? X) (?= .*? Y) (?= .*? Z) }xm
+s;
"
all there

[download]
See Look-Around Assertions in perlre; the Looking ahead and looking behind section in perlretut.

... so that I can just add remove space separated patterns ...

I don't understand what this means.

Give a man a fish:  <%-{-{-{-<

In reply to Re: ensure ALL patterns in string by AnomalousMonk
in thread ensure ALL patterns in string by previous

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