1option(1_tag_this foo) 2option(B-option-tag_this_2 ${BAR}) 3 4 option ( c_TAG_THIS but_not_this) 5 6 OPTION ( 7 d-ALSO-Tag.this 8 true) 9 10Option( 11e.LastlyTagThis "hello") 12 13option(${not_this} foo) 14option(${ not_this } foo) 15option(not~this foo) 16