Fix pattern defs for pascaligo

tools/lsp/squirrel/grammar/pascaligo/grammar.js

@@ -733,7 +733,7 @@ module.exports = grammar({
 
     _core_pattern: $ =>
       choice(
-        $.Name,
+        $.var_pattern,
         '_',
         $.Int,
         $.Nat,
@@ -743,6 +743,8 @@ module.exports = grammar({
         $._constr_pattern,
       ),
 
+    var_pattern: $ => field("name", $.Name),
+
     _list_pattern: $ =>
       choice(
         $.list_pattern,

tools/lsp/squirrel/src/AST/Pascaligo/Parser.hs

@@ -115,6 +115,7 @@ recognise = descent (error "Reasonligo.recognise") $ map usingScope
         "nil"                 -> return $ IsList []
         "list_pattern"        -> IsList   <$> fields "element"
         "cons_pattern"        -> IsCons   <$> field  "head"   <*> field "tail"
+        "var_pattern"         -> IsVar    <$> field  "name"
         _                     -> fallthrough
 
     -- Alt