[perl #77522] Rakudo allows unspace in /\ X/ but STD doesn't

[Christian Bartolomaeus via RT]

The test in S32-exceptions/misc.t passes and the test file is in 
't/spectest.data'.

If the ticket should not be set to resolved (if there is something else to do), 
please comment.

[perl #77522] Rakudo allows unspace in /\ X/ but STD doesn't

[via RT]

# New Ticket Created by  Paweł Pabian 
# Please include the string:  [perl #77522]
# in the subject line of all future correspondence about this issue. 
# URL: http://rt.perl.org/rt3/Ticket/Display.html?id=77522 


[18:51] bbkr rakudo: /\ X/ # unspace bug :) known?
[18:51] p6eval rakudo 6ccdcd:  ( no output )


[18:51] bbkr std: /\ X/
[18:51] p6eval std 32116: OUTPUT«Invalid conversion in sprintf: %M at 
STD.pm line 57284.␤===SORRY!===␤No unspace allowed in 
regex; if you meant to match the literal character, please enclose in single 
quotes (' ') or use a backslashed form like \x%M-{02}x at /tmp/p05dWQrWFG 
line 1:␤--
[18:51] p6eval ..[3…