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If this variable is non-
nil,scan-sexpstreats all non-ASCII characters as symbol constituents regardless of what the syntax table says about them. (However, text properties can still override the syntax.)
If the value is non-
nil, then comments are treated as whitespace by the functions in this section and byforward-sexp,scan-listsandscan-sexps.
The behavior of parse-partial-sexp is also affected by
parse-sexp-lookup-properties (see Syntax Properties).
You can use forward-comment to move forward or backward over
one comment or several comments.