Allow sole `and` in for_clause

grammar.js

@@ -95,8 +95,8 @@ module.exports = grammar(clojure, {
 
         accumulation_verb: _ => /((collect|append|nconc|count|maximize|minimize)(ing)?|sum(ming)?)/,
 
-        for_clause: $ => seq(choice('for', 'and', 'as'), repeat($._gap), field('variable', $._form),
+        for_clause: $ => choice(seq(choice('for', 'and', 'as'), repeat($._gap), field('variable', $._form), optional(field('type', seq(repeat($._gap), $._form))),
-            repeat1($._for_part)),
+            repeat1($._for_part)), 'and'),
 
         with_clause: $ => prec.left(seq('with', repeat($._gap), $._form, repeat($._gap), "=", repeat($._gap), $._form)),
         do_clause: $ => prec.left(seq('do', repeat1(prec.left(seq(repeat($._gap), $._form, repeat($._gap)))))),
@@ -140,7 +140,7 @@ module.exports = grammar(clojure, {
                     field('lambda_list', choice($.list_lit, $.unquoting_lit))),
                 seq(field('keyword', alias('lambda', $.defun_keyword)),
                     repeat($._gap),
-                    field('lambda_list', $.list_lit))
+                    field('lambda_list', choice($.list_lit, $.unquoting_lit)))
             ),
 
         array_dimension: $ => seq($.num_lit, choice('A', 'a')),

src/grammar.json

@@ -1863,6 +1863,9 @@
       "value": "((collect|append|nconc|count|maximize|minimize)(ing)?|sum(ming)?)"
     },
     "for_clause": {
+      "type": "CHOICE",
+      "members": [
+        {
           "type": "SEQ",
           "members": [
             {
@@ -1897,6 +1900,34 @@
                 "name": "_form"
               }
             },
+            {
+              "type": "CHOICE",
+              "members": [
+                {
+                  "type": "FIELD",
+                  "name": "type",
+                  "content": {
+                    "type": "SEQ",
+                    "members": [
+                      {
+                        "type": "REPEAT",
+                        "content": {
+                          "type": "SYMBOL",
+                          "name": "_gap"
+                        }
+                      },
+                      {
+                        "type": "SYMBOL",
+                        "name": "_form"
+                      }
+                    ]
+                  }
+                },
+                {
+                  "type": "BLANK"
+                }
+              ]
+            },
             {
               "type": "REPEAT1",
               "content": {
@@ -1906,6 +1937,12 @@
             }
           ]
         },
+        {
+          "type": "STRING",
+          "value": "and"
+        }
+      ]
+    },
     "with_clause": {
       "type": "PREC_LEFT",
       "value": 0,
@@ -2454,8 +2491,17 @@
               "type": "FIELD",
               "name": "lambda_list",
               "content": {
+                "type": "CHOICE",
+                "members": [
+                  {
                     "type": "SYMBOL",
                     "name": "list_lit"
+                  },
+                  {
+                    "type": "SYMBOL",
+                    "name": "unquoting_lit"
+                  }
+                ]
               }
             }
           ]

src/node-types.json

@@ -1126,9 +1126,123 @@
     "type": "for_clause",
     "named": true,
     "fields": {
+      "type": {
+        "multiple": true,
+        "required": false,
+        "types": [
+          {
+            "type": "#",
+            "named": false
+          },
+          {
+            "type": ".",
+            "named": false
+          },
+          {
+            "type": "char_lit",
+            "named": true
+          },
+          {
+            "type": "comment",
+            "named": true
+          },
+          {
+            "type": "complex_num_lit",
+            "named": true
+          },
+          {
+            "type": "derefing_lit",
+            "named": true
+          },
+          {
+            "type": "dis_expr",
+            "named": true
+          },
+          {
+            "type": "evaling_lit",
+            "named": true
+          },
+          {
+            "type": "fancy_literal",
+            "named": true
+          },
+          {
+            "type": "include_reader_macro",
+            "named": true
+          },
+          {
+            "type": "kwd_lit",
+            "named": true
+          },
+          {
+            "type": "list_lit",
+            "named": true
+          },
+          {
+            "type": "nil_lit",
+            "named": true
+          },
+          {
+            "type": "num_lit",
+            "named": true
+          },
+          {
+            "type": "package_lit",
+            "named": true
+          },
+          {
+            "type": "quoting_lit",
+            "named": true
+          },
+          {
+            "type": "read_cond_lit",
+            "named": true
+          },
+          {
+            "type": "set_lit",
+            "named": true
+          },
+          {
+            "type": "splicing_read_cond_lit",
+            "named": true
+          },
+          {
+            "type": "str_lit",
+            "named": true
+          },
+          {
+            "type": "sym_lit",
+            "named": true
+          },
+          {
+            "type": "sym_val_lit",
+            "named": true
+          },
+          {
+            "type": "syn_quoting_lit",
+            "named": true
+          },
+          {
+            "type": "unquote_splicing_lit",
+            "named": true
+          },
+          {
+            "type": "unquoting_lit",
+            "named": true
+          },
+          {
+            "type": "var_quoting_lit",
+            "named": true
+          },
+          {
+            "type": "vec_lit",
+            "named": true
+          }
+        ]
+      },
       "variable": {
         "multiple": true,
-        "required": true,
+        "required": false,
         "types": [
           {
             "type": "#",
@@ -1235,7 +1349,7 @@
     },
     "children": {
       "multiple": true,
-      "required": true,
+      "required": false,
       "types": [
         {
           "type": "char_lit",