fix(tags): be more flexible within tags

This even allows nesting tags, not sure it that will behave correctly.

Fixes #3

Author: vigoux

.gitignore

@@ -0,0 +1,2 @@
+
+node_modules

corpus/tags.txt

@@ -46,3 +46,17 @@ Tag on the right
   (line
     (tag
       (word))))
+
+================================================================================
+Option in tag
+================================================================================
+
+*'option'*
+
+--------------------------------------------------------------------------------
+
+(help_file
+  (line
+    (tag
+      (option
+        (word)))))

grammar.js

@@ -44,7 +44,7 @@ module.exports = grammar({
         '\n',
       ),
 
-    tag: ($) => wrapped_word($, '*', 'name'),
+    tag: ($) => seq('*', $._atom, token.immediate('*')),
     option: ($) => wrapped_word($, "'", 'name'),
     hotlink: ($) => wrapped_word($, '|', 'destination'),
     backtick: ($) => wrapped_word($, '`', 'content'),

src/grammar.json

@@ -203,12 +203,8 @@
           "value": "*"
         },
         {
-          "type": "FIELD",
-          "name": "name",
-          "content": {
-            "type": "SYMBOL",
-            "name": "word"
-          }
+          "type": "SYMBOL",
+          "name": "_atom"
         },
         {
           "type": "IMMEDIATE_TOKEN",

src/node-types.json

@@ -181,17 +181,36 @@
   {
     "type": "tag",
     "named": true,
-    "fields": {
-      "name": {
-        "multiple": false,
-        "required": true,
-        "types": [
-          {
-            "type": "word",
-            "named": true
-          }
-        ]
-      }
+    "fields": {},
+    "children": {
+      "multiple": false,
+      "required": true,
+      "types": [
+        {
+          "type": "argument",
+          "named": true
+        },
+        {
+          "type": "backtick",
+          "named": true
+        },
+        {
+          "type": "hotlink",
+          "named": true
+        },
+        {
+          "type": "option",
+          "named": true
+        },
+        {
+          "type": "tag",
+          "named": true
+        },
+        {
+          "type": "word",
+          "named": true
+        }
+      ]
     }
   },
   {