vim-cpp-modern: Enhanced C and C++ syntax highlighting

Keyword and regex-based syntax highlighting for C and C++11/14/17/20 in Vim.

The syntax files provide highlighting of:

• Common ANSI C keywords
• C++ Standard Library namespaces, types, helper types, helper template variables, constants
• Latest C++20 language features like Coroutines or Concepts
• Function declarations/definitions and function calls (basically all words followed by an opening parenthesis)
• Optionally a simpler (less colorful) highlighting of standard C and C++ keywords

Difference to vim-cpp-enhanced-highlight

Both syntax files are based on vim-cpp-enhanced-highlight with a few modifications:

• The C++ keywords virtual, override, final, inline, explicit and export are standard C++ statements and not types and are therefore put under the highlighting group Statement.
• Highlighting of library functions is purely regex-based.
• User-defined function templates or class members are not highlighted. Their regex'es are too complicated and slow, and fail too often.

Optional features

" Disable function highlighting (affects both C and C++ files)
let g:cpp_no_function_highlight = 1

" Put all standard C and C++ keywords under Vim's highlight group 'Statement'
" (affects both C and C++ files)
let g:cpp_simple_highlight = 1

" Enable highlighting of named requirements (C++20 library concepts)
let g:cpp_named_requirements_highlight = 1

The last option will highlight all C++ named requirements (concepts that haven't made it into the C++ standard yet) as standard library types.

Installation

Copy both c.vim and cpp.vim into your ~/.vim/after/syntax directory, or use your preferred plugin manager.

Issues

Vim tends to a have issues with flagging braces inside brackets as invalid syntax such as in the following example:

std::map<std::pair<int, int>, int> m;
m[{1, 2}] = 3;

As a workaround set

let c_no_curly_error = 1

See also :help ft-c-syntax for further options.

License

Distributed under the same terms as Vim itself. See :help license.