Add 'default' alias

This makes it appear in the tree as a named node.

grammar.js

@@ -166,7 +166,7 @@ module.exports = grammar({
     ),
 
     default_case: ($) => seq(
-      field("pattern", "default"),
+      field("pattern", alias("default", $.default)),
       ":",
       field("value", $._case_value),
     ),

queries/highlights.scm

@@ -49,7 +49,7 @@
 ; Built-ins {{{
 [
  (unset)
- "default"
+ (default)
 ] @variable.builtin
 (selection_type) @function.builtin
 ; }}}

src/grammar.json

@@ -687,7 +687,12 @@
           "type": "FIELD",
           "name": "pattern",
           "content": {
-            "type": "STRING",
+            "type": "ALIAS",
+            "content": {
+              "type": "STRING",
+              "value": "default"
+            },
+            "named": true,
             "value": "default"
           }
         },

src/node-types.json

@@ -187,7 +187,7 @@
         "types": [
           {
             "type": "default",
-            "named": false
+            "named": true
           }
         ]
       },
@@ -668,7 +668,7 @@
   },
   {
     "type": "default",
-    "named": false
+    "named": true
   },
   {
     "type": "escape_sequence",

src/parser.c

@@ -335,7 +335,7 @@ static const TSSymbolMetadata ts_symbol_metadata[] = {
   },
   [anon_sym_default] = {
     .visible = true,
-    .named = false,
+    .named = true,
   },
   [anon_sym_unset] = {
     .visible = true,

test/corpus/select.txt

@@ -22,6 +22,7 @@ foo = select(release_variable("RELEASE_TEST"), {
           (interpreted_string_literal)
           (interpreted_string_literal))
         (default_case
+          (default)
           (unset))))))
 
 ================================================================================
@@ -136,6 +137,7 @@ foo = select(variant("VARIANT"), {
           (interpreted_string_literal))
         (ERROR
           (default_case
+            (default)
             (unset)))
         (select_case
           (interpreted_string_literal)
@@ -168,6 +170,7 @@ foo = select(variant(), {
           (interpreted_string_literal)
           (unset))
         (default_case
+          (default)
           (interpreted_string_literal))))))
 
 ================================================================================
@@ -189,7 +192,8 @@ foo = select(some_unknown_type("CONDITION"), {
       (identifier)
       (identifier)
       (interpreted_string_literal)
-      (interpreted_string_literal))
+      (interpreted_string_literal)
+      (default))
     (interpreted_string_literal))
   (ERROR))