--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/highlight/languages/cpp.js	Tue Jan 13 19:18:47 2026 -0800
@@ -0,0 +1,615 @@
+/*! `cpp` grammar compiled for Highlight.js 11.11.1 */
+  (function(){
+    var hljsGrammar = (function () {
+  'use strict';
+
+  /*
+  Language: C++
+  Category: common, system
+  Website: https://isocpp.org
+  */
+
+  /** @type LanguageFn */
+  function cpp(hljs) {
+    const regex = hljs.regex;
+    // added for historic reasons because `hljs.C_LINE_COMMENT_MODE` does
+    // not include such support nor can we be sure all the grammars depending
+    // on it would desire this behavior
+    const C_LINE_COMMENT_MODE = hljs.COMMENT('//', '$', { contains: [ { begin: /\\\n/ } ] });
+    const DECLTYPE_AUTO_RE = 'decltype\\(auto\\)';
+    const NAMESPACE_RE = '[a-zA-Z_]\\w*::';
+    const TEMPLATE_ARGUMENT_RE = '<[^<>]+>';
+    const FUNCTION_TYPE_RE = '(?!struct)('
+      + DECLTYPE_AUTO_RE + '|'
+      + regex.optional(NAMESPACE_RE)
+      + '[a-zA-Z_]\\w*' + regex.optional(TEMPLATE_ARGUMENT_RE)
+    + ')';
+
+    const CPP_PRIMITIVE_TYPES = {
+      className: 'type',
+      begin: '\\b[a-z\\d_]*_t\\b'
+    };
+
+    // https://en.cppreference.com/w/cpp/language/escape
+    // \\ \x \xFF \u2837 \u00323747 \374
+    const CHARACTER_ESCAPES = '\\\\(x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4,8}|[0-7]{3}|\\S)';
+    const STRINGS = {
+      className: 'string',
+      variants: [
+        {
+          begin: '(u8?|U|L)?"',
+          end: '"',
+          illegal: '\\n',
+          contains: [ hljs.BACKSLASH_ESCAPE ]
+        },
+        {
+          begin: '(u8?|U|L)?\'(' + CHARACTER_ESCAPES + '|.)',
+          end: '\'',
+          illegal: '.'
+        },
+        hljs.END_SAME_AS_BEGIN({
+          begin: /(?:u8?|U|L)?R"([^()\\ ]{0,16})\(/,
+          end: /\)([^()\\ ]{0,16})"/
+        })
+      ]
+    };
+
+    const NUMBERS = {
+      className: 'number',
+      variants: [
+        // Floating-point literal.
+        { begin:
+          "[+-]?(?:" // Leading sign.
+            // Decimal.
+            + "(?:"
+              +"[0-9](?:'?[0-9])*\\.(?:[0-9](?:'?[0-9])*)?"
+              + "|\\.[0-9](?:'?[0-9])*"
+            + ")(?:[Ee][+-]?[0-9](?:'?[0-9])*)?"
+            + "|[0-9](?:'?[0-9])*[Ee][+-]?[0-9](?:'?[0-9])*"
+            // Hexadecimal.
+            + "|0[Xx](?:"
+              +"[0-9A-Fa-f](?:'?[0-9A-Fa-f])*(?:\\.(?:[0-9A-Fa-f](?:'?[0-9A-Fa-f])*)?)?"
+              + "|\\.[0-9A-Fa-f](?:'?[0-9A-Fa-f])*"
+            + ")[Pp][+-]?[0-9](?:'?[0-9])*"
+          + ")(?:" // Literal suffixes.
+            + "[Ff](?:16|32|64|128)?"
+            + "|(BF|bf)16"
+            + "|[Ll]"
+            + "|" // Literal suffix is optional.
+          + ")"
+        },
+        // Integer literal.
+        { begin:
+          "[+-]?\\b(?:" // Leading sign.
+            + "0[Bb][01](?:'?[01])*" // Binary.
+            + "|0[Xx][0-9A-Fa-f](?:'?[0-9A-Fa-f])*" // Hexadecimal.
+            + "|0(?:'?[0-7])*" // Octal or just a lone zero.
+            + "|[1-9](?:'?[0-9])*" // Decimal.
+          + ")(?:" // Literal suffixes.
+            + "[Uu](?:LL?|ll?)"
+            + "|[Uu][Zz]?"
+            + "|(?:LL?|ll?)[Uu]?"
+            + "|[Zz][Uu]"
+            + "|" // Literal suffix is optional.
+          + ")"
+          // Note: there are user-defined literal suffixes too, but perhaps having the custom suffix not part of the
+          // literal highlight actually makes it stand out more.
+        }
+      ],
+      relevance: 0
+    };
+
+    const PREPROCESSOR = {
+      className: 'meta',
+      begin: /#\s*[a-z]+\b/,
+      end: /$/,
+      keywords: { keyword:
+          'if else elif endif define undef warning error line '
+          + 'pragma _Pragma ifdef ifndef include' },
+      contains: [
+        {
+          begin: /\\\n/,
+          relevance: 0
+        },
+        hljs.inherit(STRINGS, { className: 'string' }),
+        {
+          className: 'string',
+          begin: /<.*?>/
+        },
+        C_LINE_COMMENT_MODE,
+        hljs.C_BLOCK_COMMENT_MODE
+      ]
+    };
+
+    const TITLE_MODE = {
+      className: 'title',
+      begin: regex.optional(NAMESPACE_RE) + hljs.IDENT_RE,
+      relevance: 0
+    };
+
+    const FUNCTION_TITLE = regex.optional(NAMESPACE_RE) + hljs.IDENT_RE + '\\s*\\(';
+
+    // https://en.cppreference.com/w/cpp/keyword
+    const RESERVED_KEYWORDS = [
+      'alignas',
+      'alignof',
+      'and',
+      'and_eq',
+      'asm',
+      'atomic_cancel',
+      'atomic_commit',
+      'atomic_noexcept',
+      'auto',
+      'bitand',
+      'bitor',
+      'break',
+      'case',
+      'catch',
+      'class',
+      'co_await',
+      'co_return',
+      'co_yield',
+      'compl',
+      'concept',
+      'const_cast|10',
+      'consteval',
+      'constexpr',
+      'constinit',
+      'continue',
+      'decltype',
+      'default',
+      'delete',
+      'do',
+      'dynamic_cast|10',
+      'else',
+      'enum',
+      'explicit',
+      'export',
+      'extern',
+      'false',
+      'final',
+      'for',
+      'friend',
+      'goto',
+      'if',
+      'import',
+      'inline',
+      'module',
+      'mutable',
+      'namespace',
+      'new',
+      'noexcept',
+      'not',
+      'not_eq',
+      'nullptr',
+      'operator',
+      'or',
+      'or_eq',
+      'override',
+      'private',
+      'protected',
+      'public',
+      'reflexpr',
+      'register',
+      'reinterpret_cast|10',
+      'requires',
+      'return',
+      'sizeof',
+      'static_assert',
+      'static_cast|10',
+      'struct',
+      'switch',
+      'synchronized',
+      'template',
+      'this',
+      'thread_local',
+      'throw',
+      'transaction_safe',
+      'transaction_safe_dynamic',
+      'true',
+      'try',
+      'typedef',
+      'typeid',
+      'typename',
+      'union',
+      'using',
+      'virtual',
+      'volatile',
+      'while',
+      'xor',
+      'xor_eq'
+    ];
+
+    // https://en.cppreference.com/w/cpp/keyword
+    const RESERVED_TYPES = [
+      'bool',
+      'char',
+      'char16_t',
+      'char32_t',
+      'char8_t',
+      'double',
+      'float',
+      'int',
+      'long',
+      'short',
+      'void',
+      'wchar_t',
+      'unsigned',
+      'signed',
+      'const',
+      'static'
+    ];
+
+    const TYPE_HINTS = [
+      'any',
+      'auto_ptr',
+      'barrier',
+      'binary_semaphore',
+      'bitset',
+      'complex',
+      'condition_variable',
+      'condition_variable_any',
+      'counting_semaphore',
+      'deque',
+      'false_type',
+      'flat_map',
+      'flat_set',
+      'future',
+      'imaginary',
+      'initializer_list',
+      'istringstream',
+      'jthread',
+      'latch',
+      'lock_guard',
+      'multimap',
+      'multiset',
+      'mutex',
+      'optional',
+      'ostringstream',
+      'packaged_task',
+      'pair',
+      'promise',
+      'priority_queue',
+      'queue',
+      'recursive_mutex',
+      'recursive_timed_mutex',
+      'scoped_lock',
+      'set',
+      'shared_future',
+      'shared_lock',
+      'shared_mutex',
+      'shared_timed_mutex',
+      'shared_ptr',
+      'stack',
+      'string_view',
+      'stringstream',
+      'timed_mutex',
+      'thread',
+      'true_type',
+      'tuple',
+      'unique_lock',
+      'unique_ptr',
+      'unordered_map',
+      'unordered_multimap',
+      'unordered_multiset',
+      'unordered_set',
+      'variant',
+      'vector',
+      'weak_ptr',
+      'wstring',
+      'wstring_view'
+    ];
+
+    const FUNCTION_HINTS = [
+      'abort',
+      'abs',
+      'acos',
+      'apply',
+      'as_const',
+      'asin',
+      'atan',
+      'atan2',
+      'calloc',
+      'ceil',
+      'cerr',
+      'cin',
+      'clog',
+      'cos',
+      'cosh',
+      'cout',
+      'declval',
+      'endl',
+      'exchange',
+      'exit',
+      'exp',
+      'fabs',
+      'floor',
+      'fmod',
+      'forward',
+      'fprintf',
+      'fputs',
+      'free',
+      'frexp',
+      'fscanf',
+      'future',
+      'invoke',
+      'isalnum',
+      'isalpha',
+      'iscntrl',
+      'isdigit',
+      'isgraph',
+      'islower',
+      'isprint',
+      'ispunct',
+      'isspace',
+      'isupper',
+      'isxdigit',
+      'labs',
+      'launder',
+      'ldexp',
+      'log',
+      'log10',
+      'make_pair',
+      'make_shared',
+      'make_shared_for_overwrite',
+      'make_tuple',
+      'make_unique',
+      'malloc',
+      'memchr',
+      'memcmp',
+      'memcpy',
+      'memset',
+      'modf',
+      'move',
+      'pow',
+      'printf',
+      'putchar',
+      'puts',
+      'realloc',
+      'scanf',
+      'sin',
+      'sinh',
+      'snprintf',
+      'sprintf',
+      'sqrt',
+      'sscanf',
+      'std',
+      'stderr',
+      'stdin',
+      'stdout',
+      'strcat',
+      'strchr',
+      'strcmp',
+      'strcpy',
+      'strcspn',
+      'strlen',
+      'strncat',
+      'strncmp',
+      'strncpy',
+      'strpbrk',
+      'strrchr',
+      'strspn',
+      'strstr',
+      'swap',
+      'tan',
+      'tanh',
+      'terminate',
+      'to_underlying',
+      'tolower',
+      'toupper',
+      'vfprintf',
+      'visit',
+      'vprintf',
+      'vsprintf'
+    ];
+
+    const LITERALS = [
+      'NULL',
+      'false',
+      'nullopt',
+      'nullptr',
+      'true'
+    ];
+
+    // https://en.cppreference.com/w/cpp/keyword
+    const BUILT_IN = [ '_Pragma' ];
+
+    const CPP_KEYWORDS = {
+      type: RESERVED_TYPES,
+      keyword: RESERVED_KEYWORDS,
+      literal: LITERALS,
+      built_in: BUILT_IN,
+      _type_hints: TYPE_HINTS
+    };
+
+    const FUNCTION_DISPATCH = {
+      className: 'function.dispatch',
+      relevance: 0,
+      keywords: {
+        // Only for relevance, not highlighting.
+        _hint: FUNCTION_HINTS },
+      begin: regex.concat(
+        /\b/,
+        /(?!decltype)/,
+        /(?!if)/,
+        /(?!for)/,
+        /(?!switch)/,
+        /(?!while)/,
+        hljs.IDENT_RE,
+        regex.lookahead(/(<[^<>]+>|)\s*\(/))
+    };
+
+    const EXPRESSION_CONTAINS = [
+      FUNCTION_DISPATCH,
+      PREPROCESSOR,
+      CPP_PRIMITIVE_TYPES,
+      C_LINE_COMMENT_MODE,
+      hljs.C_BLOCK_COMMENT_MODE,
+      NUMBERS,
+      STRINGS
+    ];
+
+    const EXPRESSION_CONTEXT = {
+      // This mode covers expression context where we can't expect a function
+      // definition and shouldn't highlight anything that looks like one:
+      // `return some()`, `else if()`, `(x*sum(1, 2))`
+      variants: [
+        {
+          begin: /=/,
+          end: /;/
+        },
+        {
+          begin: /\(/,
+          end: /\)/
+        },
+        {
+          beginKeywords: 'new throw return else',
+          end: /;/
+        }
+      ],
+      keywords: CPP_KEYWORDS,
+      contains: EXPRESSION_CONTAINS.concat([
+        {
+          begin: /\(/,
+          end: /\)/,
+          keywords: CPP_KEYWORDS,
+          contains: EXPRESSION_CONTAINS.concat([ 'self' ]),
+          relevance: 0
+        }
+      ]),
+      relevance: 0
+    };
+
+    const FUNCTION_DECLARATION = {
+      className: 'function',
+      begin: '(' + FUNCTION_TYPE_RE + '[\\*&\\s]+)+' + FUNCTION_TITLE,
+      returnBegin: true,
+      end: /[{;=]/,
+      excludeEnd: true,
+      keywords: CPP_KEYWORDS,
+      illegal: /[^\w\s\*&:<>.]/,
+      contains: [
+        { // to prevent it from being confused as the function title
+          begin: DECLTYPE_AUTO_RE,
+          keywords: CPP_KEYWORDS,
+          relevance: 0
+        },
+        {
+          begin: FUNCTION_TITLE,
+          returnBegin: true,
+          contains: [ TITLE_MODE ],
+          relevance: 0
+        },
+        // needed because we do not have look-behind on the below rule
+        // to prevent it from grabbing the final : in a :: pair
+        {
+          begin: /::/,
+          relevance: 0
+        },
+        // initializers
+        {
+          begin: /:/,
+          endsWithParent: true,
+          contains: [
+            STRINGS,
+            NUMBERS
+          ]
+        },
+        // allow for multiple declarations, e.g.:
+        // extern void f(int), g(char);
+        {
+          relevance: 0,
+          match: /,/
+        },
+        {
+          className: 'params',
+          begin: /\(/,
+          end: /\)/,
+          keywords: CPP_KEYWORDS,
+          relevance: 0,
+          contains: [
+            C_LINE_COMMENT_MODE,
+            hljs.C_BLOCK_COMMENT_MODE,
+            STRINGS,
+            NUMBERS,
+            CPP_PRIMITIVE_TYPES,
+            // Count matching parentheses.
+            {
+              begin: /\(/,
+              end: /\)/,
+              keywords: CPP_KEYWORDS,
+              relevance: 0,
+              contains: [
+                'self',
+                C_LINE_COMMENT_MODE,
+                hljs.C_BLOCK_COMMENT_MODE,
+                STRINGS,
+                NUMBERS,
+                CPP_PRIMITIVE_TYPES
+              ]
+            }
+          ]
+        },
+        CPP_PRIMITIVE_TYPES,
+        C_LINE_COMMENT_MODE,
+        hljs.C_BLOCK_COMMENT_MODE,
+        PREPROCESSOR
+      ]
+    };
+
+    return {
+      name: 'C++',
+      aliases: [
+        'cc',
+        'c++',
+        'h++',
+        'hpp',
+        'hh',
+        'hxx',
+        'cxx'
+      ],
+      keywords: CPP_KEYWORDS,
+      illegal: '</',
+      classNameAliases: { 'function.dispatch': 'built_in' },
+      contains: [].concat(
+        EXPRESSION_CONTEXT,
+        FUNCTION_DECLARATION,
+        FUNCTION_DISPATCH,
+        EXPRESSION_CONTAINS,
+        [
+          PREPROCESSOR,
+          { // containers: ie, `vector <int> rooms (9);`
+            begin: '\\b(deque|list|queue|priority_queue|pair|stack|vector|map|set|bitset|multiset|multimap|unordered_map|unordered_set|unordered_multiset|unordered_multimap|array|tuple|optional|variant|function|flat_map|flat_set)\\s*<(?!<)',
+            end: '>',
+            keywords: CPP_KEYWORDS,
+            contains: [
+              'self',
+              CPP_PRIMITIVE_TYPES
+            ]
+          },
+          {
+            begin: hljs.IDENT_RE + '::',
+            keywords: CPP_KEYWORDS
+          },
+          {
+            match: [
+              // extra complexity to deal with `enum class` and `enum struct`
+              /\b(?:enum(?:\s+(?:class|struct))?|class|struct|union)/,
+              /\s+/,
+              /\w+/
+            ],
+            className: {
+              1: 'keyword',
+              3: 'title.class'
+            }
+          }
+        ])
+    };
+  }
+
+  return cpp;
+
+})();
+
+    hljs.registerLanguage('cpp', hljsGrammar);
+  })();
\ No newline at end of file