Stop treating \big, \bigg, \Big, \Bigg delimiters as pairable

Delimiters preceded by these commands are treated by TeX as Ord atoms --
meaning they don't require any sort of pairing, and shouldn't be treated
as such.

See #84 and The TeXbook, page 171.

grammar.js

@@ -861,10 +861,6 @@ module.exports = grammar({
             'left_command',
             choice(
               '\\left',
-              '\\big',
-              '\\Big',
-              '\\bigg',
-              '\\Bigg',
               '\\bigl',
               '\\Bigl',
               '\\biggl',
@@ -877,10 +873,6 @@ module.exports = grammar({
             'right_command',
             choice(
               '\\right',
-              '\\big',
-              '\\Big',
-              '\\bigg',
-              '\\Bigg',
               '\\bigr',
               '\\Bigr',
               '\\biggr',

src/grammar.json

@@ -4357,22 +4357,6 @@
                   "type": "STRING",
                   "value": "\\left"
                 },
-                {
-                  "type": "STRING",
-                  "value": "\\big"
-                },
-                {
-                  "type": "STRING",
-                  "value": "\\Big"
-                },
-                {
-                  "type": "STRING",
-                  "value": "\\bigg"
-                },
-                {
-                  "type": "STRING",
-                  "value": "\\Bigg"
-                },
                 {
                   "type": "STRING",
                   "value": "\\bigl"
@@ -4417,22 +4401,6 @@
                   "type": "STRING",
                   "value": "\\right"
                 },
-                {
-                  "type": "STRING",
-                  "value": "\\big"
-                },
-                {
-                  "type": "STRING",
-                  "value": "\\Big"
-                },
-                {
-                  "type": "STRING",
-                  "value": "\\bigg"
-                },
-                {
-                  "type": "STRING",
-                  "value": "\\Bigg"
-                },
                 {
                   "type": "STRING",
                   "value": "\\bigr"

src/node-types.json

@@ -3977,14 +3977,6 @@
         "multiple": false,
         "required": true,
         "types": [
-          {
-            "type": "\\Big",
-            "named": false
-          },
-          {
-            "type": "\\Bigg",
-            "named": false
-          },
           {
             "type": "\\Biggl",
             "named": false
@@ -3993,14 +3985,6 @@
             "type": "\\Bigl",
             "named": false
           },
-          {
-            "type": "\\big",
-            "named": false
-          },
-          {
-            "type": "\\bigg",
-            "named": false
-          },
           {
             "type": "\\biggl",
             "named": false
@@ -4053,14 +4037,6 @@
         "multiple": false,
         "required": true,
         "types": [
-          {
-            "type": "\\Big",
-            "named": false
-          },
-          {
-            "type": "\\Bigg",
-            "named": false
-          },
           {
             "type": "\\Biggr",
             "named": false
@@ -4069,14 +4045,6 @@
             "type": "\\Bigr",
             "named": false
           },
-          {
-            "type": "\\big",
-            "named": false
-          },
-          {
-            "type": "\\bigg",
-            "named": false
-          },
           {
             "type": "\\biggr",
             "named": false
@@ -7470,14 +7438,6 @@
     "type": "\\Avolcite",
     "named": false
   },
-  {
-    "type": "\\Big",
-    "named": false
-  },
-  {
-    "type": "\\Bigg",
-    "named": false
-  },
   {
     "type": "\\Biggl",
     "named": false
@@ -7898,14 +7858,6 @@
     "type": "\\bibliography",
     "named": false
   },
-  {
-    "type": "\\big",
-    "named": false
-  },
-  {
-    "type": "\\bigg",
-    "named": false
-  },
   {
     "type": "\\biggl",
     "named": false

test/corpus/issues.txt

@@ -726,14 +726,13 @@ tree-sitter-latex (Issue #55) | minted with options
           (word))))))
 
 ================================================================================
-tree-sitter-latex (Issue #58) | math delimiters
+tree-sitter-latex (Issues #58 and #84) | math delimiters
 ================================================================================
 
-\big( 2 + 2 \big)
 \bigl( 2 + 2 \bigr)
 \left( 2 + 2 \right)
-\big\langle 2 + 2 \big\rangle
 \bigl| v \bigr|
+r \big|_0^a
 
 --------------------------------------------------------------------------------
 
@@ -750,16 +749,13 @@ tree-sitter-latex (Issue #58) | math delimiters
       (word)))
   (math_delimiter
     (text
-      (word)
-      (operator)
       (word)))
-  (math_delimiter
+  (text
-    (command_name)
+    (word)
-    (text
+    (generic_command
-      (word)
+      (command_name))
-      (operator)
+    (operator)
+    (subscript
       (word))
-    (command_name))
+    (superscript
-  (math_delimiter
-    (text
       (word))))