yasnippet-snippets VS ctags

I second yasnippet, it is extremely handy for all sorts of boilerplate (like LaTeX preambles, environments). There are many contributed snippets in the yasnippet-snippets repo that you can look at as examples.

But you could look at what others do for Yasnippets? https://github.com/AndreaCrotti/yasnippet-snippets/tree/master/snippets/emacs-lisp-mode

You may want yasnippets. It's in melpa. I don't use lsp-mode. Consider using gnu global with ggtags and ctags for parsing and indexing your code-base for searching for symbols within emacs.

I also recommend you https://github.com/preservim/tagbar with https://ctags.io/ installed , it will map definitions (functions, enum, struct etc..) to tags and tagbar plugin allows you to open a split window with the mapped list and navigate through your file, it also enabled more advanced features for quick navigation .

grep, Ctags, Cscope, LSP

Vim has the tag feature built-in, which allows it to jump to the tags that were found by a tool like universal ctags using :h CTRL-]. See :help tags for more information on this. Fun fact: this is the approach that Vim uses when you use :help!

Requirements: You need to have a CTags implementation like universal-ctags installed on your system (on every system where you use vim).

Install https://github.com/universal-ctags/ctags

If you are heavy Vim user, you do not need anything else. For just quick browsing, simply use ctags, make sure to use universal ctags (https://ctags.io) not exuberant ctags which are no longer well maintained. Go works out of box.

Other (built-in) tools for file navigation in Vim include: :h :ls and :h :buffer to navigate in your buffer list (i.e. the files you have loaded); everything listed in [https://vimways.org/2018/death-by-a-thousand-files/](romainl's "Death by a Thousand Files" articles in vimways); using tags by installing universal-ctags to generate the tags then using any of the commands in :h tag to navigate them; setting global marks to files you use often with m[UPPERCASE LETTER] and jumping to them with `[UPPERCASE LETTER]; :h :vimgrep…

I have good news for you. Universal Ctags, an Exuberant Ctags fork and essentially its replacement, has fixed this already:

Vim has built-in functionality that works pretty similar to what you want. If you have a tags file (for example, using universal ctags), you can hit Ctrl-] (:h Ctrl-]) to jump to the declaration of any function under your cursor. Or, if you don't have a tags file, you can use gd (:h gd) to jump to a local declaration within the open file.