[perl #46213] [PGE] Bug in longest token matching "||" ?

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# New Ticket Created by  Klaas-Jan Stol 
# Please include the string:  [perl #46213]
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hi,

while converting lang/PIR into the new Perl6Grammar syntax, I came across
the following.

token relational_operator {
    || '=='
    || '!='
    || '<='
    || '<'
    || '>'
    || '>='
}

At first, I used single bars, like '|'.  However, tests failed. When
switching the last 2 entries ">" and ">=" it worked, probably because I put
the longest token first.

Then I figured I should make explicit I want the longest token. The operator
I should use is "||" instead of "|". However, using "||" didn't solve the
problem when I listed ">" before ">=".
I wonder if this is a bug, or that something else is going on.

regards,
kjs