Note: Beware! Default reply-to is to the list.
concatenation binds more closely than ternary op and logical AND &&, so the ternary is looking at the result of the concatenation (which evaluates to true, see perlsyn manpage on 'Truth vs Falsehood') and not the match , whereas in the highlighted cases the match (between parens) is evaluated first. See perlop manpage on how Perl looks at a statement. The say function is expecting a list, so to get what you expect you need something like: say (( 'h e l l o' =~ /h e l l o/x )?'true':'false') to get everything else to be evaluated and the result said Otherwise I misunderstand the question... (first day back from holiday :-)
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