$ echo "select/**/*/**/from/**/events;" | sqllexerv2 -mode tokenize -format txt
IDENT WILDCARD WILDCARD MULTILINE_COMMENT IDENT WILDCARD WILDCARD OPERATOR IDENT PUNCTUATION
gives
"IDENT WILDCARD WILDCARD MULTILINE_COMMENT IDENT WILDCARD WILDCARD OPERATOR IDENT PUNCTUATION"
but if we add a space after the select the "/" is correctly detected
$ echo "select /**/*/**/from/**/events;" | sqllexerv2 -format txt -mode tokenize
COMMAND MULTILINE_COMMENT WILDCARD MULTILINE_COMMENT IDENT WILDCARD WILDCARD OPERATOR IDENT PUNCTUATION
gives
but if we add a space after the select the "/" is correctly detected