Community

I think my problem comes from the fact I have the | symbol being used as a comment AND as an operator, I copy the beginning of my .syn for sake of clarity :
C=1

[Syntax]
Namespace1=5
IgnoreCase=Yes
KeyWordLength=
BracketChars={[()]}
OperatorChars=-+*<>!~%^&|=
PreprocStart=#
SyntaxStart=
SyntaxEnd ...