From 01f2dfd0283df9781c484872ebd7b5781e992ed3 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Mon, 7 Mar 2022 18:08:54 +0100
Subject: [PATCH] home: vim: completion: configure snippets

---
 home/vim/plugin/settings/completion.vim | 51 ++++++++++++-------------
 1 file changed, 25 insertions(+), 26 deletions(-)

diff --git a/home/vim/plugin/settings/completion.vim b/home/vim/plugin/settings/completion.vim
index cad93d0..5539a98 100644
--- a/home/vim/plugin/settings/completion.vim
+++ b/home/vim/plugin/settings/completion.vim
@@ -4,8 +4,14 @@ set completeopt=menu,menuone,noselect
 lua << EOF
 local cmp = require("cmp")
 local cmp_under_comparator = require("cmp-under-comparator")
+local luasnip = require("luasnip")
 
 cmp.setup({
+    snippet = {
+        expand = function(args)
+            luasnip.lsp_expand(args.body)
+        end,
+    },
     mapping = {
         ["<Down>"] = cmp.mapping({
             i = cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Select }),
@@ -23,32 +29,24 @@ cmp.setup({
                 fallback()
             end,
         }),
-        ["<Tab>"] = cmp.mapping({
-            c = function(fallback)
-                if #cmp.core:get_sources() > 0 and not require("cmp.config").is_native_menu() then
-                    if cmp.visible() then
-                        cmp.select_next_item()
-                    else
-                        cmp.complete()
-                    end
-                else
-                    fallback()
-                end
-            end,
-        }),
-        ["<S-Tab>"] = cmp.mapping({
-            c = function(fallback)
-                if #cmp.core:get_sources() > 0 and not require("cmp.config").is_native_menu() then
-                    if cmp.visible() then
-                        cmp.select_prev_item()
-                    else
-                        cmp.complete()
-                    end
-                else
-                    fallback()
-                end
-            end,
-        }),
+        ["<Tab>"] = function(fallback)
+            if cmp.visible() then
+                cmp.select_next_item()
+            elseif luasnip.expand_or_jumpable() then
+                luasnip.expand_or_jump()
+            else
+                fallback()
+            end
+        end,
+        ["<S-Tab>"] = function(fallback)
+            if cmp.visible() then
+                cmp.select_prev_item()
+            elseif luasnip.jumpable(-1) then
+                luasnip.jump(-1)
+            else
+                fallback()
+            end
+        end,
         ["<C-n>"] = cmp.mapping(cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Insert }), { "i", "c" }),
         ["<C-p>"] = cmp.mapping(cmp.mapping.select_prev_item({ behavior = cmp.SelectBehavior.Insert }), { "i", "c" }),
         ["<C-d>"] = cmp.mapping.scroll_docs(-5), 
@@ -63,6 +61,7 @@ cmp.setup({
         { name = "path", priority_weight = 110 },
         { name = "nvim_lsp", priority_weight = 100 },
         { name = "nvim_lua", priority_weight = 90 },
+        { name = "luasnip", priority_weight = 80 },
         { name = "buffer", max_item_count = 5, priority_weight = 50 },
     },
     sorting = {