Fix #1: use tab for selecting item

init.lua

@@ -38,7 +38,7 @@ require('packer').startup(function(use)
   -- Treesitter
   use { 'nvim-treesitter/nvim-treesitter', run = ':TSUpdate', }
   use 'nvim-treesitter/nvim-treesitter-refactor' -- refactoring / renaming
-  use 'romgrk/nvim-treesitter-context'
+  use 'romgrk/nvim-treesitter-context' -- maintient les entêtes des fonctions pour avoir le contexte d'où on se trouve
 
   -- LSP 
   use {'neovim/nvim-lspconfig'}
@@ -285,6 +285,7 @@ require('lspconfig').lua_ls.setup({
 local cmp = require('cmp')
 -- require('lsp-zero').cmp_action()
 local cmp_select = {behavior = cmp.SelectBehavior.Select}
+local luasnip = require("luasnip")
 
 cmp.setup({
   sources = {
@@ -299,6 +300,25 @@ cmp.setup({
     documentation = cmp.config.window.bordered(),
   },
   mapping = cmp.mapping.preset.insert({
+    -- https://github.com/hrsh7th/nvim-cmp/wiki/Example-mappings#luasnip
+    ['<Tab>'] = cmp.mapping(function(fallback)
+      if cmp.visible() then
+        cmp.select_next_item()
+      elseif luasnip.locally_jumpable(1) then
+        luasnip.jump(1)
+      else
+        fallback()
+      end
+    end, { "i", "s" }),
+    ['<S-Tab>'] = cmp.mapping(function(fallback)
+      if cmp.visible() then
+        cmp.select_prev_item()
+      elseif luasnip.locally_jumpable(-1) then
+        luasnip.jump(-1)
+      else
+        fallback()
+      end
+    end, { "i", "s" }),
     ['<C-k>'] = cmp.mapping.select_prev_item(cmp_select),
     ['<C-j>'] = cmp.mapping.select_next_item(cmp_select),
     ['<C-n>'] = cmp.mapping.complete(),
@@ -428,20 +448,19 @@ require('telescope').load_extension("noice")
 -- Luasnip {{{
 -- load friendly snippet 
 require('luasnip.loaders.from_vscode').lazy_load()
-local ls = require("luasnip")
+local snippet = luasnip.snippet
-local snippet = ls.snippet
+local text = luasnip.text_node
-local text = ls.text_node
+local insert = luasnip.insert_node
-local insert = ls.insert_node
+local func = luasnip.function_node
-local func = ls.function_node
 
-ls.setup({})
+luasnip.setup({})
 
 -- Functions {{{
 local date = function() return {os.date('%Y-%m-%d')} end
 local filename = function() return debug.getinfo(1, 'S').source end
 -- }}}
 -- Zola {{{
-ls.add_snippets("markdown", {
+luasnip.add_snippets("markdown", {
   snippet("zh", {
     text("+++"),
     text("title = \""), func (filename, {}), text("\""),