ultisnips_to_luasnip VS vim-vsnip

I believe ultisnips has a very intuitive syntax for creating snippets. I wrote a small tool that converts some ultipsnip snippets to luasnip format. The tool can still be improved but I lost motivation after realizing that luasnip has no regex support. Here is it if you want to check it out.

Thanks for your reply. Actually, the most recent case where I have wanted to parse something has been with respect to convert "code snippets" from one language to another. Here's an attempt to my solution. It works for simple cases, but failes for cases where things are nested, such as in the example below. This is mostly due to me using any structured approach.

I have been working on converting some of my Ultisnips snippets to LuaSnips and found the process to be quite tedious. I attempted to automate the process and created a script to do so, which can be found here. Some test cases are included. While it's not possible to fully convert Ultisnips snippets to LuaSnip (as it would require converting from Python to Lua), the script is able to handle relatively simple snippets. Even if the snippet doesn't run correctly at first, it should only require a few adjustments to fix. However, since this is the first time I have written a "parser," I would appreciate any assistance, particularly with the recursive (nested) parts of the script.

My go to these days has been https://github.com/hrsh7th/vim-vsnip. It is compatible with LSP and VSCode snippet format. Since it is in pure VimScript you don’t need to battle configuring python just to get the plug-in to work.

I first started by reading some tutorials but most of those used parser combinators. For me, parser combinators always caused some issues sooner or later (at least in Lua when trying to parse recursive / nested nodes). An example project that uses this technique is vim-vsnip: https://github.com/hrsh7th/vim-vsnip/blob/master/autoload/vsnip/snippet/parser.vim. Later, I found out that Luacheck uses a different approach which I liked better: https://github.com/lunarmodules/luacheck/blob/master/src/luacheck/parser.lua. That's the project that helped me the most while writing my own parsers for different snippet engines.

This plugin could use it? hrsh7th/vim-vsnip

I am not a snippets expert, I don't even currently use snippets. However, I know that both LuaSnip and vim-vsnip can load these vscode style snippets. So my recommendation would be to get the snippets and use one of those two snippet plugins.

For autocompletion I use the nvim-cmp plugin. If you're not coding, it might be overkill. But during writing it helps me a lot, because it autosuggests words that I used in the current buffer, too. The most popular autocomplete plugins should be compatible with the most popular snippets engines like vim-vsnip.

Have you ever wondered how to have a snippet completion in VSCode so you can write Julia code fast but in Neovim? Fear not! vim-vsnip is the plugin you need. This plugin supports LSP/VSCode's snippet format. But first, you need to install cmp-vsnip for this plugin to be sourced to nvim-cmp. Oh btw, these three plugins: nvim-cmp, vim-vsnip, and cmp-vsnip → are made by the same person which is actually cool! If you want to support them, become a sponsor! (I am poor so I cannot sponsor yet 😔)

I believe you want the second variant. Then you should install some snippet plugin like vsnip or luasnip and config it with your completion engine.

https://github.com/hrsh7th/vim-vsnip says it supports vscode style snippets, so apparently you could use https://marketplace.visualstudio.com/items?itemName=kaffeine.advanced-drupal-8-snippets with that plugin.