...
All occurrences in a source file of the following sequences of three characters (that is, trigraph sequences) are replaced with the corresponding single character.
??=
#
??)
]
??!
|
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="bc1af63fa0dea381-2a1030b9-4c324008-8627a1b5-bb94da21bce28c01d95c41d4"><ac:plain-text-body><![CDATA[
??(
[
??'
^
??>
}
]]></ac:plain-text-body></ac:structured-macro>
??/
\
??<
{
??-
~
...
The compliant solution uses string concatenation to place the two question marks together, since because they will be interpreted as beginning a trigraph sequence otherwise.
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