Follow changes in CR-css-fonts-3-20180315

See also: https://www.w3.org/TR/2018/CR-css-fonts-3-20180315/

Author: hail2u

after/syntax/css/css-fonts-3.vim

@@ -1,6 +1,5 @@
 syn match cssFontProp contained "\<font-feature-settings\>"
 syn match cssFontProp contained "\<font-kerning\>"
-syn match cssFontProp contained "\<font-language-override\>"
 syn match cssFontProp contained "\<font-synthesis\>"
 syn match cssFontProp contained "\<font-variant-\(alternates\|caps\|east-asian\|ligatures\|numeric\|position\)\>"
 syn keyword cssFontAttr contained unicase ordinal jis78 jis83 jis90 jis04 simplified traditional

after/syntax/css/css-fonts-4.vim

@@ -5,6 +5,7 @@ syn match cssFontProp contained "\<font-variation-settings\>"
 syn match cssFontProp contained "\<font-palette\>"
 syn match cssFontProp contained "\<font-presentation\>"
 syn match cssFontProp contained "\<base-palette\>"
+syn match cssFontProp contained "\<font-language-override\>"
 syn keyword cssFontAttr contained emoji math fangsong infinity swap fallback optional light dark
 syn match cssFontAttr contained "\<system-ui\>"
 syn region cssInclude start=/@font-palette-values\>/ end=/\ze{/ skipwhite skipnl contains=css.*Prop,css.*Attr,cssValueInteger,cssValueLength,cssMediaKeyword,cssVendor,cssIncludeKeyword,cssComment nextgroup=cssMediaBlock

test/test.css

@@ -289,7 +289,6 @@
 .fonts-3 {
   font-feature-settings: common-ligatures;
   font-kerning: no-common-ligatures;
-  font-language-override: discretionary-ligatures;
   font-synthesis: no-discretionary-ligatures;
   font-variant-alternates: historical-ligatures;
   font-variant-caps: no-historical-ligatures;
@@ -322,6 +321,7 @@
   display: simplified;
   display: traditional;
   display: proportional-width;
+  display: discretionary-ligatures;
 }
 
 .fonts-4 {
@@ -332,7 +332,7 @@
   font-variation-settings: infinity;
   font-palette: swap;
   font-presentation: fallback;
-  display: optional;
+  font-language-override: optional;
   display: light;
   display: dark;
 }