Neovim: add signature help plugin + make use of quotes consistent

home/.config/nvim/lua/pluginconf/bufferline.lua

@@ -1 +1 @@
-require("bufferline").setup{}
+require('bufferline').setup{}

home/.config/nvim/lua/pluginconf/colorscheme.lua

@@ -1,11 +1,11 @@
-require("catppuccin").setup({
+require('catppuccin').setup({
     transparent_background = false,
     term_colors = false,
-    compile = {enabled = true, path = vim.fn.stdpath "cache" .. "/catppuccin"},
+    compile = {enabled = true, path = vim.fn.stdpath 'cache' .. '/catppuccin'},
     styles = {
-        comments = {"italic"},
+        comments = {'italic'},
-        functions = {"italic"},
+        functions = {'italic'},
-        keywords = {"italic"},
+        keywords = {'italic'},
         strings = {},
         variables = {}
     },
@@ -14,16 +14,16 @@ require("catppuccin").setup({
         native_lsp = {
             enabled = true,
             virtual_text = {
-                errors = {"italic"},
+                errors = {'italic'},
-                hints = {"italic"},
+                hints = {'italic'},
-                warnings = {"italic"},
+                warnings = {'italic'},
-                information = {"italic"}
+                information = {'italic'}
             },
             underlines = {
-                errors = {"underline"},
+                errors = {'underline'},
-                hints = {"underline"},
+                hints = {'underline'},
-                warnings = {"underline"},
+                warnings = {'underline'},
-                information = {"underline"}
+                information = {'underline'}
             }
         },
         lsp_trouble = false,

home/.config/nvim/lua/pluginconf/completion.lua

@@ -54,4 +54,4 @@ cmp.setup {
 }
 
 -- load friendly-snippets to luasnip
-require("luasnip/loaders/from_vscode").lazy_load()
+require('luasnip/loaders/from_vscode').lazy_load()

home/.config/nvim/lua/pluginconf/indent-blankline.lua

@@ -1,7 +1,7 @@
 vim.opt.list = true
 
-require("indent_blankline").setup {
+require('indent_blankline').setup {
-    space_char_blankline = " ",
+    space_char_blankline = ' ',
     show_current_context = true,
     show_current_context_start = true,
 }

home/.config/nvim/lua/pluginconf/lsp.lua

@@ -1,4 +1,4 @@
-local lsp_installer = require("nvim-lsp-installer")
+local lsp_installer = require('nvim-lsp-installer')
 
 local M = {}
 
@@ -47,15 +47,18 @@ end
 local capabilities = vim.lsp.protocol.make_client_capabilities()
 capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
 
+-- Setup LSP signature plugin
+require('lsp_signature').setup()
+
 -- Register a handler that will be called for all installed servers.
 lsp_installer.on_server_ready(function(server)
     -- Don't setup jdtls here since it is done by nvim-jdtls
-    if server.name == "jdtls" then return end
+    if server.name == 'jdtls' then return end
 
     local opts = {}
 
     -- Lua specific settings
-    if server.name == "sumneko_lua" then
+    if server.name == 'sumneko_lua' then
         local runtime_path = vim.split(package.path, ';')
         opts.settings = {
             Lua = {
@@ -71,7 +74,7 @@ lsp_installer.on_server_ready(function(server)
                 },
                 workspace = {
                     -- Make the server aware of Neovim runtime files
-                    library = vim.api.nvim_get_runtime_file("", true)
+                    library = vim.api.nvim_get_runtime_file('', true)
                 },
                 -- Do not send telemetry data containing a randomized but unique identifier
                 telemetry = {enable = false}

home/.config/nvim/lua/pluginconf/treesitter.lua

@@ -1,8 +1,8 @@
 require'nvim-treesitter.configs'.setup {
     ensure_installed = {
-        "bash", "c", "css", "dockerfile", "html", "http", "java", "json",
+        'bash', 'c', 'css', 'dockerfile', 'html', 'http', 'java', 'json',
-        "json5", "latex", "lua", "make", "markdown", "php", "python", "regex",
+        'json5', 'latex', 'lua', 'make', 'markdown', 'php', 'python', 'regex',
-        "rst", "scss", "toml", "tsx", "typescript", "javascript", "yaml"
+        'rst', 'scss', 'toml', 'tsx', 'typescript', 'javascript', 'yaml'
     },
     highlight = {enable = true},
     indent = {enable = true},

home/.config/nvim/lua/pluginmanager.lua

@@ -20,7 +20,7 @@ require('packer').startup(function()
     use {'wbthomason/packer.nvim', opt = true}
 
     -- Colorscheme
-    use({"catppuccin/nvim", as = "catppuccin"})
+    use({'catppuccin/nvim', as = 'catppuccin'})
 
     -- Git in signcolumn
     use 'airblade/vim-gitgutter'
@@ -34,7 +34,7 @@ require('packer').startup(function()
     -- Tabline/bufferline
     use {
         'akinsho/nvim-bufferline.lua',
-        tag = "*",
+        tag = '*',
         requires = 'kyazdani42/nvim-web-devicons'
     }
 
@@ -42,7 +42,7 @@ require('packer').startup(function()
     use 'tpope/vim-fugitive'
 
     -- Indent characters
-    use "lukas-reineke/indent-blankline.nvim"
+    use 'lukas-reineke/indent-blankline.nvim'
 
     -- Tree explorer
     use {'kyazdani42/nvim-tree.lua', requires = 'kyazdani42/nvim-web-devicons'}
@@ -70,13 +70,16 @@ require('packer').startup(function()
     -- Additional LSP features for Java
     use 'mfussenegger/nvim-jdtls'
 
+    -- Display function signature
+    use {'ray-x/lsp_signature.nvim'}
+
     -- Completion
     use 'hrsh7th/nvim-cmp' -- Autocompletion plugin
     use 'hrsh7th/cmp-nvim-lsp' -- LSP source for nvim-cmp
     use 'hrsh7th/cmp-path' -- Path source for nvim-cmp
     use 'saadparwaiz1/cmp_luasnip' -- Snippets source for nvim-cmp
     use 'L3MON4D3/LuaSnip' -- Snippets plugin
-    use "rafamadriz/friendly-snippets" -- Snippets collection
+    use 'rafamadriz/friendly-snippets' -- Snippets collection
 
     -- treesitter syntax highlight
     use {
@@ -118,7 +121,7 @@ require('packer').startup(function()
     use 'habamax/vim-asciidoctor'
 
     -- Modern filetype.vim replacement
-    use("nathom/filetype.nvim")
+    use('nathom/filetype.nvim')
 
 end)