"0 but true" is (a bit) interesting:
print "0 but true" ? "true\n" : "false\n";
print "0 but true" + 0 ? "true\n" : "false\n";
print "0 but true" + 1 ? "true\n" : "false\n";
No warnings using numeric addition on a string, despite the 'use warnings'. Also the second case is unexpected. Shouldn't 'True' + 1 be true?
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