I have used vim for C++ development for quite a while now where, for auto completion, i would either use YCM or, lately, the combination of LanguageClient-neovim and clangd. Lately, however, having been influenced by a few articles from vimways.org, i would like to explore a more ascetic auto-completion setup. Among several auto-completion flavours that vim offers, one can find "omni-completion", a context specific auto completion style with support for multiple languages.
:h compl-omni-filetypes lists
C as supported language and this is already a good start.
When looking further for omni-complete for C++, I find projects like OmniCppComplete but the last available version is quite dated: 2007. Given we get a new standard every 3 years since 2011, it feels that any C++ related tool should get a facelift every now and then.
I realize that i can always get back to the comfort of modern LSP in combination with a LSP client plugin, but what be the hard-core vim way to continue? The fewer plugins the better, right? Do vim ninjas among you say
C style omni-complete is good for 80% of the cases? Or do you toss auto complete all together, claiming it hinders your learning progress of the code base?