Brothers and Sisters, I'm a bit confused of the use of or as a control structure. My understanding is that the lvalue is a block which is executed and evaluated, and if it fails the code block following is executed. Today I was writing something and attempted the following, which tries first to execute plan A and failing that plan B.
unless ($dontdothis)
    {
    dofistcritical()
    or
        {
        dobackupcritical()
        or
            {
            die "main and backup failed";
            }
        dobackupremainder();
        exit 0;
        }
    dofirstremainder();
    exit 0;
    }

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Das ist Verboten!
I'm still pondering the syntax of why it fails.
Cheers,
Andy.

Update: Just to make the intention perfectly clear, I wish to use OR as a fallthough operator in the style of 
tryfirstchoice() or trysecondchoice() or trynextchoice or .... trylast
+choice();

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such that subs are evaluated in left to right order. The first sucessful sub completed will exit and complete its second (non critical) section.

For the record the final cut looks uncannily like what simonm posted. The use of do to disambiguate block boundaries makes life easy.

In reply to Nested OR as a control structure by andyf

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