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

This plugin provides additional syntax highlighting for C and C++11/14/17/20 development in Vim. It provides highlighting of functions, as well as all types, helper types and helper template variables in the C++ standard library. It also adds syntax highlighting of C++20 library concepts.

The syntax file is based on vim-cpp-enhanced-highlight.

Difference to vim-cpp-enhanced-highlight

I added my own C/C++ highlighting for the keywords virtual, override, final, inline, explicit and export. These are now under the highlighting group StorageClass (Vim's default syntax file puts them under Type).
Almost all C++ standard library functions have been commented out because words followed by an opening parenthesis are highlighted as functions anyway. So we don't have to explicitly list each library function in here. The only exceptions are function templates, which sometimes must be called with template parameters, like std::make_unique<Foo>(bar).
Another reason why almost all library functions have been commented out is because if someone had defined his/her own type and the name collided with a library's function name, the type would have been highlighted as a function. This can happen quite often when too many keywords are added to the syntax file. I have noticed this when implementing metafunctions like apply or find_if.
User-defined function templates or class members won't be highlighted. Both features were removed because they made scrolling very slow and never worked 100%.

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.

Resources

License

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

About

Extended Vim syntax highlighting for C and C++ (C++11/14/17/20)

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