:scss #main { width: $width; } ~ :scss #main { width: $width; } ---------------------------------------------------- [ ["filter-scss", [ ["filter-name", ":scss"], ["selector", ["#main "]], ["punctuation", "{"], ["property", "width"], ["punctuation", ":"], ["variable", "$width"], ["punctuation", ";"], ["punctuation", "}"] ]], ["punctuation", "~"], ["filter-scss", [ ["filter-name", ":scss"], ["selector", ["#main "]], ["punctuation", "{"], ["property", "width"], ["punctuation", ":"], ["variable", "$width"], ["punctuation", ";"], ["punctuation", "}"] ]] ] ---------------------------------------------------- Checks for CSS filter in Haml. The tilde serves only as a separator.