Disable Unicode support in scssphp

see https://github.com/WoltLab/WCF/pull/2736#issuecomment-416084079

diff --git a/wcfsetup/install/files/lib/system/style/StyleCompiler.class.php b/wcfsetup/install/files/lib/system/style/StyleCompiler.class.php
index 67151359fd398e8e4f7e62adeea89e63e49d067e..fba86922e9f0e853a99c14534f40139f202098bb 100644 (file)
--- a/wcfsetup/install/files/lib/system/style/StyleCompiler.class.php
+++ b/wcfsetup/install/files/lib/system/style/StyleCompiler.class.php
@@ -52,6 +52,9 @@ class StyleCompiler extends SingletonFactory {
        protected function init() {
                require_once(WCF_DIR.'lib/system/style/scssphp/scss.inc.php');
                $this->compiler = new Compiler();
+               // Disable Unicode support because of its horrible performance (7x slowdown)
+               // https://github.com/WoltLab/WCF/pull/2736#issuecomment-416084079
+               $this->compiler->setEncoding('iso8859-1');
                $this->compiler->setImportPaths([WCF_DIR]);
        }