[perl #115230] "say do do ;" errors when "say do do;" succeeds

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# New Ticket Created by  Geoffrey Broadwell 
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# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=115230 >


TimToady++ pointed out one side of an interesting edge case in keyword parsing:

<TimToady> [Coke]: note that most keywords in p6 will win under LTM because 
they tend to include a trailing whitespace.
<TimToady> r: my \do = 42; say do do;
<p6eval>   rakudo 547fcb: OUTPUT«42␤»
<japhb_>   r: my \do = 42; say do do ;
<p6eval>   rakudo 547fcb: OUTPUT«===SORRY!===␤Error while compiling block : 
Error while compiling op call: Error while compiling block : Error while 
compiling block : Can only use get_how on a SixModelObject␤»
<jnthn>    whoa...
<jnthn>    japhb_: That one'd want reporting.


-'f