improvement: Show named bounds properly

Author: tgodzik

src/typescript/Scala.tmLanguage.ts

@@ -297,6 +297,9 @@ export const scalaTmLanguage: TmLanguage = {
         {
           include: '#xml-literal'
         },
+        {
+          include: '#namedBounds'
+        },
         {
           include: '#keywords'
         },
@@ -1018,6 +1021,27 @@ export const scalaTmLanguage: TmLanguage = {
       ],
       comment: 'For themes: Brackets look nice when colored.'
     },
+    namedBounds: {
+      patterns: [
+        {
+          match: `\\s*([\\:])\\s*(${idUpper})\\s+(as)\\s+(${idLower})\\b`,
+          captures: {
+            '1': {
+              name: 'keyword.operator.scala'
+            },
+            '2': {
+              name: 'entity.name.class'
+            },
+            '3': {
+              name: 'keyword.other.import.as.scala'
+            },
+            '4': {
+              name: 'entity.name.declaration'
+            }
+          }
+        }
+      ]
+    },
     qualifiedClassName: {
       match: `(\\b([A-Z][\\w]*)(?:(?<=_)${opchar}+)?)`,
       captures: {