Keyword and regex-based syntax highlighting for C and C++11..26 in Vim.

The syntax files provide highlighting of:

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

left: default cpp.vim syntax file, right: this plugin

Both syntax files are based on vim-cpp-enhanced-highlight with the following modifications:

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

" Disable function highlighting (affects both C and C++ files)
let g:cpp_function_highlight = 0

" Enable highlighting of C++11 attributes
let g:cpp_attributes_highlight = 1

" Highlight struct/class member variables (affects both C and C++ files)
let g:cpp_member_highlight = 1

" Disable highlighting of type names in class, struct, union, enum, using, and
" concept declarations (affects both C and C++ files)
let g:cpp_type_name_highlight = 0

" Highlight operators (affects both C and C++ files)
let g:cpp_operator_highlight = 1

" Put builtin C and C++ types (int, long, double, auto, bool etc.) under Vim's
" highlight group 'Statement' (results in a simpler syntax highlighting)
let g:cpp_builtin_types_as_statement = 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

The last option changes the highlighting of the following keywords:

• C: static, register, auto, volatile, extern, const, inline, __attribute__, restrict, alignas, alignof, static_assert, noreturn, thread_local, struct, union, enum, case, default
• C++: class, typename, template, namespace, concept, mutable, constexpr decltype, consteval, constinit

$ cd ~/.vim/pack/git-plugins/start
$ git clone https://github.com/bfrg/vim-c-cpp-modern

Note: The directory name git-plugins is arbitrary, you can pick any other name. For more details see :help packages.

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