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async BLOCK;
    "async" creates a thread to execute the block immediately followin
+g
...
    "undef" if the thread terminates *normally*. Otherwise, it returns
    the value of $@ associated with the thread's execution status in i
+ts
    "eval" context.

print timedCommand( 3, $cmd, $_ ) || "\$@ $@" for 2, 3, 4; ### LINE B 
+###

$ perl huh
1
...
 4

4