This can't be true, because:
d:\>perl -MO=Deparse -e "do {s/\s+/\t/; s/elementary/my dear Watson/g;
+} for @array;"
foreach $_ (@array) {
s/\s+/\t/;
s/elementary/my dear Watson/g;;
}
-e syntax OK
You machine probably was overloaded with some extra tasks second time. And I beleive multiline version compiled into the same code internally.
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