# File lib/sass/tree/visitors/perform.rb, line 274 def visit_directive(node) if node.value['#{'] if node.value =~ /^@import (?!url\()/ Sass::Util.sass_warn "DEPRECATION WARNING on line \#{node.line}\#{\" of \#{node.filename}\" if node.filename}:\n@import directives using \\\#{} interpolation will need to use url() in Sass 3.2.\nFor example:\n\n @import url(\"http://\\\#{$url}/style.css\");\n" end node.value = run_interp(Sass::Engine.parse_interp(node.value, node.line, 0, node.options)) end yield node end