fix: block content should not have markup

Author: kristijanhusak

grammar.js

@@ -250,7 +250,7 @@ const org_grammar = {
       field('name', $.expr),
       optional(repeat1(field('parameter', $.expr))),
       $._nl,
-      optional(field('contents', $.contents)),
+      optional(field('contents', alias($._block_contents, $.contents))),
       alias(/#\+end_/i, '#+end_'),
       field('end_name',alias($._immediate_expr, $.expr)),
       $._eol,
@@ -262,12 +262,18 @@ const org_grammar = {
       field('name', $.expr),
       repeat(field('parameter', $.expr)),
       $._nl,
-      optional(field('contents', $.contents)),
+      optional(field('contents', alias($._block_contents, $.contents))),
       alias(/#\+end:/i, '#+end:'),
       optional(field('end_name', $.expr)),
       $._eol,
     ),
 
+    _block_contents: $ => seq(
+      optional(repeat1($.expr)),
+      repeat1($._nl),
+      repeat(seq(repeat1($.expr), repeat1($._nl))),
+    ),
+
     list: $ => seq(
       optional($._directive_list),
       $._liststart,  // captures indent length and bullet type
@@ -329,19 +335,19 @@ const org_grammar = {
           field('name', alias(/[\p{L}\p{N}*]+/, $.name)),
           token.immediate('}'),
           $._nl,
-          optional(field('contents', $.contents)),
+          optional(field('contents', alias($._block_contents, $.contents))),
           alias(/\\end\{/i, '\\end{'),
           alias(/[\p{L}\p{N}*]+/, $.name),
           token.immediate('}'),
         ),
         seq(
           token(seq('\\[', choice('\n', '\r'))),
-          optional(field('contents', $.contents)),
+          optional(field('contents', alias($._block_contents, $.contents))),
           '\\]',
         ),
         seq(
           token(seq('\\(', choice('\n', '\r'))),
-          optional(field('contents', $.contents)),
+          optional(field('contents', alias($._block_contents, $.contents))),
           '\\)',
         ),
       ),