Well, I tested vars of various lengths between 30 and 60 chars on 4.02 on up to 4.20 and they all worked.

code:
Break on
$123456789012345678901234567890 = 'test1'
$1234567890123456789012345678901234567890 = 'test2'
$12345678901234567890123456789012345678901234567890 = 'test3'
$123456789012345678901234567890123456789012345678901234567890 = 'test4'
$123456789012345678901234567890 ?
$1234567890123456789012345678901234567890 ?
$12345678901234567890123456789012345678901234567890 ?
$123456789012345678901234567890123456789012345678901234567890 ?
get $_

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