MAJOR: Refactor configuration structure

The details of the change is documented in the readme.

If your config stops working, I'm fully responsible :)

README.md

@@ -59,12 +59,39 @@ outline.
 This section may be relevant to you if your existing config uses the mentioned
 features:
 
+- **Config**: Configuration options have been significantly restructured to
+provide better consistency and understandability. Please see the [default config](#configuration) for an example of the full list.
+  - Options that control the looks
+and behaviour of outline window is now moved to `outline_window` table;
+  - Options that control the items that show up are now in `outline_items`
+  - Options for the preview window is in `preview_window`.
+  - Symbol icons are now in `symbols.icons`, symbol blacklists are in
+  `symbols.blacklist`
+  - Lsp blacklists are now in `providers.lsp.blacklist_clients`.
+  - Fold options are now in `symbol_folding` with `fold_markers` being
+  `symbol_folding.markers`, consistent to `guides.markers`.
+
+  The reasoning for the above is simple. When you see 'border' under
+  `preview_window` you can directly infer it controls the border for the preview
+  window. Previously, for example, when you see `winblend` or `wrap`: is it for
+  the outline window or the preview window? Furthermore, this change also aids
+  extensibility to the configuration, and avoids cluttering the root setup opts
+  namespace.
+
+  If you disagree with this decision, you are always free to switch back to the
+  original symbols-outline.nvim, or you could pin a commit in this fork if you
+  still want to use the features and fixes from here.
+
 - **Config**: `keymaps.focus_location` RENAMED to `keymaps.peek_location` to
   avoid confusion with focus window commands.
 
 - **Config**: Marker icons used for guides can now be customized. `show_guides`
   REMOVED in favor of `guides.enabled`.
 
+  You can set `guides = false` to disable guides altogether, or set `guides =
+  true` to enable it but use default configuration for the guides. Otherwise,
+  please use `guides.enabled` if your configuration for `guides` is a table.
+
 - **Behaviour**: Removed hover floating window from `toggle_preview`.
   - Instead, you can set `open_hover_on_preview=true` (true by default) so that
     the `hover_symbol` action can be triggered when `toggle_preview`is
@@ -113,7 +140,8 @@ for a screenshot)
 - Added function and command to show provider and outline window status,
   somewhat like `:LspInfo`.
 
-- Move down/up by one line and peek_location immediately.
+- Move down/up by one line and peek_location immediately, default bindings are
+`<C-j>` and `<C-k>` just like Aerial.
 
 - Flash highlight when using goto/peek location.
 
@@ -125,7 +153,7 @@ for a screenshot)
 - New restore location keymap option to go back to corresponding outline
   location synced with code (see config `restore_location`).
 
-Screen recordings of some of the features is shown at the bottom of the readme.
+Screen recordings of some of the features is shown at the [bottom of the readme](#recipes).
 
 ## PRs
 
@@ -279,11 +307,12 @@ Table of contents
 * [Setup](#setup)
 * [Configuration](#configuration)
     * [Terminology](#terminology)
-    * [Options](#options)
+    * [Default options](#default-options)
 * [Commands](#commands)
-    * [Lua API](#lua-api)
 * [Default keymaps](#default-keymaps)
 * [Highlights](#highlights)
+* [Lua API](#lua-api)
+* [Tips](#tips)
 * [Recipes](#recipes)
 
 <!-- mtoc end -->
@@ -295,17 +324,15 @@ Table of contents
 
 ## Installation
 
-Use `hedyhli/symbols-outline.nvim` if you wish to use this fork.
-
 Packer:
 ```lua
-use 'simrat39/symbols-outline.nvim'
+use 'hedyhli/symbols-outline.nvim'
 ```
 
 Lazy:
 ```lua
 {
-  "simrat39/symbols-outline.nvim",
+  "hedyhli/symbols-outline.nvim",
   config = function()
     -- Example mapping to toggle outline
     vim.keymap.set("n", "<leader>tt", "<cmd>SymbolsOutline<CR>",
@@ -321,11 +348,11 @@ Lazy:
 Lazy with lazy-loading:
 ```lua
 {
-  "simrat39/symbols-outline.nvim",
+  "hedyhli/symbols-outline.nvim",
   cmd = { "SymbolsOutline", "SymbolsOutlineOpen" },
   keys = {
     -- Example mapping to toggle outline
-    { "<leader>tt", "<cmd>SymbolsOutline<CR>", desc = "Toggle outline window" },
+    { "<leader>tt", "<cmd>SymbolsOutline<CR>", desc = "Toggle outline" },
   },
   opts = {
     -- Your setup opts here
@@ -350,8 +377,14 @@ require("symbols-outline").setup({})
 
 ## Configuration
 
+The configuration structure has been heavily improved and refactored in this
+plugin. For details and reasoning, see [breaking changes](#-breaking-changes).
+
 ### Terminology
 
+Check this list if you there's any confusion with the terms used in the
+configuration.
+
 - **Provider**: Source of the items in the outline view. Could be LSP, CoC, etc.
 - **Node**: An item in the outline view
 - **Fold**: Collapse a collapsible node
@@ -363,46 +396,22 @@ require("symbols-outline").setup({})
 provided by provider.
 - **Focus**: Which window the cursor is in
 
-### Options
+### Default options
 
 Pass a table to the setup call with your configuration options.
 
 Default values are shown:
 
 ```lua
-local opts = {
+{
+  outline_window = {
     -- Where to open the split window: right/left
     position = 'right',
-  -- Whether width is relative to existing windows
-  relative_width = true,
     -- Percentage or integer of columns
     width = 25,
+    -- Whether width is relative to existing windows
+    relative_width = true,
 
-  -- Whether to highlight the currently hovered symbol (high cpu usage)
-  highlight_hovered_item = true,
-  -- Options for outline guides.
-  -- Only in this fork
-  guides = {
-    enabled = true,
-    markers = {
-      bottom = '└',
-      middle = '├',
-      vertical = '│',
-      horizontal = '─',
-    },
-  },
-  -- Automatically open preview of code on hover
-  auto_preview = false,
-  -- Automatically open hover_symbol when opening toggle_preview (see keymaps).
-  -- If you disable this you can still open hover_symbol using your keymap
-  -- below.
-  -- Only in this fork
-  open_hover_on_preview = true,
-  -- Border option for floating preview window.
-  -- Options include: single/double/rounded/solid/shadow or an array of border
-  -- characters.
-  -- See :help nvim_open_win() and search for "border" option.
-  border = 'single',
     -- Behaviour changed in this fork:
     -- Auto close the outline window if goto_location is triggered and not for
     -- peek_location
@@ -415,6 +424,19 @@ local opts = {
     show_numbers = false,
     show_relative_numbers = false,
     show_cursorline = true,  -- Only in this fork
+
+    -- Whether to wrap long lines, or let them flow off the window
+    wrap = false,
+    -- Only in this fork:
+    -- Whether to focus on the outline window when it is opened.
+    -- Set to false to remain focus on your previous buffer when opening
+    -- symbols-outline.
+    focus_on_open = true,
+  },
+
+  outline_items = {
+    -- Whether to highlight the currently hovered symbol (high cpu usage)
+    highlight_hovered_item = true,
     -- Show extra details with the symbols (lsp dependent)
     show_symbol_details = true,
     -- Only in this fork.
@@ -422,23 +444,48 @@ local opts = {
     -- Why? See this comment:
     -- https://github.com/simrat39/symbols-outline.nvim/issues/212#issuecomment-1793503563
     show_symbol_lineno = false,
-  -- Highlight group for the preview background
+  },
-  preview_bg_highlight = 'Pmenu',
+
+  -- Options for outline guides.
+  -- Only in this fork
+  guides = {
+    enabled = true,
+    markers = {
+      bottom = '└',
+      middle = '├',
+      vertical = '│',
+      horizontal = '─',
+    },
+  },
+
+  symbol_folding = {
     -- Depth past which nodes will be folded by default
     autofold_depth = nil,
     -- Automatically unfold hovered symbol
     auto_unfold_hover = true,
-  fold_markers = { '', '' },
+    markers = { '', '' },
-  -- Whether to wrap long lines, or let them flow off the window
+  },
-  wrap = false,
 
-  -- Only in this fork:
+  preview_window = {
-  -- Whether to focus on the outline window when it is opened.
+    -- Automatically open preview of code location when navigating outline window
-  -- Set to false to remain focus on your previous buffer when opening
+    auto_preview = false,
-  -- symbols-outline.
+    -- Automatically open hover_symbol when opening preview (see keymaps for
-  focus_on_open = true,
+    -- hover_symbol).
+    -- If you disable this you can still open hover_symbol using your keymap
+    -- below.
+    -- Only in this fork
+    open_hover_on_preview = true,
+    -- Border option for floating preview window.
+    -- Options include: single/double/rounded/solid/shadow or an array of border
+    -- characters.
+    -- See :help nvim_open_win() and search for "border" option.
+    border = 'single',
+    border_hl = 'Pmenu',
+    -- Highlight group for the preview background
+    bg_hl = 'Pmenu',
     -- Pseudo-transparency of the preview window
     winblend = 0
+  },
 
   -- These keymaps can be a string or a table for multiple keys
   keymaps = { 
@@ -479,14 +526,19 @@ local opts = {
     up_and_goto = '<C-k>',
   },
 
-  -- Lsp clients to ignore
+  providers = {
-  lsp_blacklist = {},
+    lsp = {
-  -- Symbols to ignore.
+      -- Lsp client names to ignore
-  -- Possible values: lua/symbols-outline/symbols.lua
+      blacklist_clients = {},
-  symbol_blacklist = {},
+    },
+  },
 
   symbols = {
-    -- Changed in this fork
+    -- Symbols to ignore.
+    -- Possible values are the Keys in the icons table below.
+    blacklist = {},
+    -- Changed in this fork to fix deprecated icons not showing.
+    icons = {
       File = { icon = "󰈔", hl = "@text.uri" },
       Module = { icon = "󰆧", hl = "@namespace" },
       Namespace = { icon = "󰅪", hl = "@namespace" },
@@ -515,16 +567,17 @@ local opts = {
       TypeParameter = { icon = "𝙏", hl = "@parameter" },
       Component = { icon = "󰅴", hl = "@function" },
       Fragment = { icon = "󰅴", hl = "@constant" },
-    -- ccls
+      -- Added ccls symbols in this fork
       TypeAlias =  { icon = ' ', hl = '@type' },
       Parameter = { icon = ' ', hl = '@parameter' },
       StaticMethod = { icon = ' ', hl = '@function' },
       Macro = { icon = ' ', hl = '@macro' },
     },
+  },
 }
 ```
 
-To find out exactly what some of the options do, check out the
+To find out exactly what some of the options do, please see the
 [recipes](#recipes) section of the readme at the bottom for screen-recordings.
 
 ## Commands
@@ -576,7 +629,47 @@ To find out exactly what some of the options do, check out the
   With bang, it can be understood as the converse of `focus_location`.
 
 
-### Lua API
+## Default keymaps
+
+These mappings are active for the outline window.
+
+| Key        | Action                                             |
+| ---------- | -------------------------------------------------- |
+| Escape     | Close outline                                      |
+| ?          | Show help message                                  |
+| Enter      | Go to symbol location in code                      |
+| o          | Go to symbol location in code without losing focus |
+| Ctrl+k     | Go up and goto location                            |
+| Ctrl+j     | Go down and goto location                          |
+| Ctrl+g     | Go to code location in outline window              |
+| Ctrl+Space | Hover current symbol                               |
+| K          | Toggles the current symbol preview                 |
+| r          | Rename symbol                                      |
+| a          | Code actions                                       |
+| h          | Fold symbol or parent symbol                       |
+| Tab        | Toggle fold under cursor                           |
+| Shift+Tab  | Toggle all folds                                   |
+| l          | Unfold symbol                                      |
+| W          | Fold all symbols                                   |
+| E          | Unfold all symbols                                 |
+| R          | Reset all folding                                  |
+
+## Highlights
+
+| Highlight               | Purpose                                |
+| ----------------------- | -------------------------------------- |
+| FocusedSymbol           | Highlight of the focused symbol        |
+| Pmenu                   | Highlight of the preview popup windows |
+| SymbolsOutlineConnector | Highlight of the table connectors      |
+| Comment                 | Highlight of the info virtual text     |
+
+
+Note that some highlights are configurable such as the preview window border and
+background. Please see [configuration options](#default-options).
+
+## Lua API
+
+Symbols-outline provides the following public API for use in lua.
 
 ```lua
 require'symbols-outline'
@@ -630,40 +723,17 @@ require'symbols-outline'
 
   With `opts.focus_outline=false`, cursor focus will remain on code window.
 
+## Tips
 
-## Default keymaps
+- To open the outline but don't focus on it, you can use `:SymbolsOutline!` or
+`:SymbolsOutlineOpen`.
 
-These mappings are active for the outline window.
+  This is useful in autocmds, say you have a filetype that, whenever a buffer with
+  that filetype is opened you want to open the outline.
 
-| Key        | Action                                             |
+- After navigating around in the outline window, you can use `<C-g>` (default
-| ---------- | -------------------------------------------------- |
+  mapping for `restore_location`) to go back to the corresponding outline
-| Escape     | Close outline                                      |
+  location based on the code location.
-| ?          | Show help message                                  |
-| Enter      | Go to symbol location in code                      |
-| o          | Go to symbol location in code without losing focus |
-| Ctrl+k     | Go up and goto location                            |
-| Ctrl+j     | Go down and goto location                          |
-| Ctrl+g     | Go to code location in outline window              |
-| Ctrl+Space | Hover current symbol                               |
-| K          | Toggles the current symbol preview                 |
-| r          | Rename symbol                                      |
-| a          | Code actions                                       |
-| h          | Fold symbol or parent symbol                       |
-| Tab        | Toggle fold under cursor                           |
-| Shift+Tab  | Toggle all folds                                   |
-| l          | Unfold symbol                                      |
-| W          | Fold all symbols                                   |
-| E          | Unfold all symbols                                 |
-| R          | Reset all folding                                  |
-
-## Highlights
-
-| Highlight               | Purpose                                |
-| ----------------------- | -------------------------------------- |
-| FocusedSymbol           | Highlight of the focused symbol        |
-| Pmenu                   | Highlight of the preview popup windows |
-| SymbolsOutlineConnector | Highlight of the table connectors      |
-| Comment                 | Highlight of the info virtual text     |
 
 
 ## Recipes
@@ -671,30 +741,40 @@ These mappings are active for the outline window.
 Behaviour you may want to achieve and the combination of configuration options
 to achieve it.
 
+Code snippets in this section are to be placed in `.setup({ <HERE> })` directly
+unless specified otherwise.
+
 **Unfold all others except currently hovered item**
 
 ```lua
-autofold_depth = 1,
+symbol_folding = {
-auto_unfold_hover = true,
+  autofold_depth = 1,
+  auto_unfold_hover = true,
+},
 ```
 <img width="900" alt="image" src="https://github.com/hedyhli/symbols-outline.nvim/assets/50042066/2e0c5f91-a979-4e64-a100-256ad062dce3">
 
 
-Any other recipes you think others may also find useful? Feel free to open a PR.
-
 **Use outline window as a quick-jump window**
 
 ```lua
-auto_preview = true,
+preview_window = {
+  auto_preview = true,
+},
 ```
 
 https://github.com/hedyhli/symbols-outline.nvim/assets/50042066/a473d791-d1b9-48e9-917f-b816b564a645
 
+Note that in the recording I have `preview_window.open_hover_on_preview =
+false`.
+
 Alternatively, if you want to automatically navigate to the corresponding code
-location and not use the preview window:
+location directly and not use the preview window:
 
 ```lua
-auto_goto = true,
+outline_window = {
+  auto_goto = true,
+},
 ```
 
 This feature was added by @stickperson in an upstream PR 🙌
@@ -704,21 +784,30 @@ https://github.com/hedyhli/symbols-outline.nvim/assets/50042066/3d06e342-97ac-40
 Or, you can use keys `<C-j>` and `<C-k>` to achieve the same effect, whilst not
 having `auto_goto` on by default.
 
+This feature is newly added in this fork.
 
 **Hide the extra details after each symbol name**
 
 ```lua
-show_symbol_details = false,
+outline_items = {
+  show_symbol_details = false,
+},
 ```
 
 **Show line numbers next to each symbol to jump to that symbol quickly**
 
+This feature is newly added in this fork.
+
 ```lua
-show_symbol_lineno = true,
+outline_items = {
+  show_symbol_lineno = false,
+},
 ```
 
-The default highlight group is `LineNr`.
+The default highlight group for the line numbers is `LineNr`.
 
 <img width="900" alt="image" src="https://github.com/hedyhli/symbols-outline.nvim/assets/50042066/2bbb5833-f40b-4c53-8338-407252d61443">
 
+---
+Any other recipes you think others may also find useful? Feel free to open a PR.
 

lua/symbols-outline/config.lua

@@ -3,9 +3,6 @@ local vim = vim
 local M = {}
 
 M.defaults = {
-  position = 'right',
-  width = 25,
-  highlight_hovered_item = true,
   guides = {
     enabled = true,
     markers = {
@@ -15,24 +12,39 @@ M.defaults = {
       horizontal = '─',
     },
   },
-  border = 'single',
+  outline_items = {
+    show_symbol_details = true,
+    show_symbol_lineno = false,
+    highlight_hovered_item = true,
+  },
+  outline_window = {
+    position = 'right',
+    width = 25,
     relative_width = true,
+    wrap = false,
+    focus_on_open = true,
     auto_close = false,
     auto_goto = false,
-  auto_preview = false,
-  open_hover_on_preview = true,
     show_numbers = false,
     show_relative_numbers = false,
     show_cursorline = true,
-  show_symbol_details = true,
+  },
-  show_symbol_lineno = false,
+  preview_window = {
-  preview_bg_highlight = 'Pmenu',
+    auto_preview = false,
+    width = 50,
+    min_width = 100,
+    relative_width = true,
+    bg_hl = 'Pmenu',
+    border = 'single',
+    border_hl = 'Pmenu',
+    open_hover_on_preview = true,
     winblend = 0,
+  },
+  symbol_folding = {
     autofold_depth = nil,
     auto_unfold_hover = true,
-  fold_markers = { '', '' },
+    markers = { '', '' },
-  wrap = false,
+  },
-  focus_on_open = true,
   keymaps = {
     show_help = '?',
     close = { '<Esc>', 'q' },
@@ -53,9 +65,14 @@ M.defaults = {
     down_and_goto = '<C-j>',
     up_and_goto = '<C-k>',
   },
-  lsp_blacklist = {},
+  providers = {
-  symbol_blacklist = {},
+    lsp = {
+      blacklist_clients = {},
+    },
+  },
   symbols = {
+    blacklist = {},
+    icons = {
       File = { icon = '󰈔', hl = '@text.uri' },
       Module = { icon = '󰆧', hl = '@namespace' },
       Namespace = { icon = '󰅪', hl = '@namespace' },
@@ -90,16 +107,17 @@ M.defaults = {
       StaticMethod = { icon = ' ', hl = '@function' },
       Macro = { icon = ' ', hl = '@macro' },
     },
+    },
 }
 
-M.options = {}
+M.o = {}
 
 function M.has_numbers()
-  return M.options.show_numbers or M.options.show_relative_numbers
+  return M.o.outline_window.show_numbers or M.o.outline_window.show_relative_numbers
 end
 
 function M.get_position_navigation_direction()
-  if M.options.position == 'left' then
+  if M.o.outline_window.position == 'left' then
     return 'h'
   else
     return 'l'
@@ -107,15 +125,15 @@ function M.get_position_navigation_direction()
 end
 
 function M.get_window_width()
-  if M.options.relative_width then
+  if M.o.outline_window.relative_width then
-    return math.ceil(vim.o.columns * (M.options.width / 100))
+    return math.ceil(vim.o.columns * (M.o.outline_window.width / 100))
   else
-    return M.options.width
+    return M.o.outline_window.width
   end
 end
 
 function M.get_split_command()
-  if M.options.position == 'left' then
+  if M.o.outline_window.position == 'left' then
     return 'topleft vs'
   else
     return 'botright vs'
@@ -136,7 +154,7 @@ function M.is_symbol_blacklisted(kind)
   if kind == nil then
     return false
   end
-  return has_value(M.options.symbol_blacklist, kind)
+  return has_value(M.o.symbols.blacklist, kind)
 end
 
 function M.is_client_blacklisted(client_id)
@@ -144,17 +162,21 @@ function M.is_client_blacklisted(client_id)
   if not client then
     return false
   end
-  return has_value(M.options.lsp_blacklist, client.name)
+  return has_value(M.o.providers.lsp.blacklist_clients, client.name)
 end
 
 function M.show_help()
   print 'Current keymaps:'
-  print(vim.inspect(M.options.keymaps))
+  print(vim.inspect(M.o.keymaps))
 end
 
 function M.setup(options)
   vim.g.symbols_outline_loaded = 1
-  M.options = vim.tbl_deep_extend('force', {}, M.defaults, options or {})
+  M.o = vim.tbl_deep_extend('force', {}, M.defaults, options or {})
+  local guides = M.o.guides
+  if type(guides) == 'boolean' and guides then
+    M.o.guides = M.defaults.guides
+  end
 end
 
 return M

lua/symbols-outline/folding.lua

@@ -1,12 +1,12 @@
 local M = {}
-local config = require 'symbols-outline.config'
+local cfg = require 'symbols-outline.config'
 
 M.is_foldable = function(node)
   return node.children and #node.children > 0
 end
 
 local get_default_folded = function(depth)
-  local fold_past = config.options.autofold_depth
+  local fold_past = cfg.o.symbol_folding.autofold_depth
   if not fold_past then
     return false
   else
@@ -17,7 +17,7 @@ end
 M.is_folded = function(node)
   if node.folded ~= nil then
     return node.folded
-  elseif node.hovered and config.options.auto_unfold_hover then
+  elseif node.hovered and cfg.o.symbol_folding.auto_unfold_hover then
     return false
   else
     return get_default_folded(node.depth)

lua/symbols-outline/hover.lua

@@ -1,5 +1,5 @@
 local so = require 'symbols-outline'
-local soconfig = require 'symbols-outline.config'
+local cfg = require 'symbols-outline.config'
 local util = vim.lsp.util
 
 local M = {}
@@ -40,7 +40,7 @@ function M.show_hover()
       end
       -- FIXME
       local bufnr, winnr = util.open_floating_preview(markdown_lines, 'markdown', config)
-      local winhi = 'Normal:' .. soconfig.options.preview_bg_highlight
+      local winhi = 'Normal:' .. cfg.o.preview_window.bg_hl
       vim.api.nvim_win_set_option(winnr, 'winhighlight', winhi)
     end
   )

lua/symbols-outline/init.lua

@@ -2,7 +2,7 @@ local parser = require 'symbols-outline.parser'
 local providers = require 'symbols-outline.providers.init'
 local ui = require 'symbols-outline.ui'
 local writer = require 'symbols-outline.writer'
-local config = require 'symbols-outline.config'
+local cfg = require 'symbols-outline.config'
 local utils = require 'symbols-outline.utils.init'
 local View = require 'symbols-outline.view'
 local folding = require 'symbols-outline.folding'
@@ -11,7 +11,7 @@ local M = {}
 
 local function setup_global_autocmd()
   if
-    config.options.highlight_hovered_item or config.options.auto_unfold_hover
+    cfg.o.outline_items.highlight_hovered_item or cfg.o.symbol_folding.auto_unfold_hover
   then
     vim.api.nvim_create_autocmd('CursorHold', {
       pattern = '*',
@@ -107,7 +107,7 @@ end
 -- Wraps __goto_location and handles auto_close
 function M._goto_location(change_focus)
   M.__goto_location(change_focus)
-  if change_focus and config.options.auto_close then
+  if change_focus and cfg.o.outline_window.auto_close then
     M.close_outline()
   end
 end
@@ -130,7 +130,7 @@ function M._toggle_fold(move_cursor, node_index)
 end
 
 local function setup_buffer_autocmd()
-  if config.options.auto_preview then
+  if cfg.o.preview_window.auto_preview then
     vim.api.nvim_create_autocmd('CursorMoved', {
       buffer = 0,
       callback = require('symbols-outline.preview').show,
@@ -141,7 +141,7 @@ local function setup_buffer_autocmd()
       callback = require('symbols-outline.preview').close,
     })
   end
-  if config.options.auto_goto then
+  if cfg.o.outline_window.auto_goto then
     vim.api.nvim_create_autocmd('CursorMoved', {
       buffer = 0,
       callback = function()
@@ -261,76 +261,76 @@ local function setup_keymaps(bufnr)
     utils.nmap(bufnr, ...)
   end
   -- goto_location of symbol and focus that window
-  map(config.options.keymaps.goto_location, function()
+  map(cfg.o.keymaps.goto_location, function()
     M._goto_location(true)
   end)
   -- goto_location of symbol but stay in outline
-  map(config.options.keymaps.peek_location, function()
+  map(cfg.o.keymaps.peek_location, function()
     M._goto_location(false)
   end)
   -- Navigate to corresponding outline location for current code location
-  map(config.options.keymaps.restore_location, function()
+  map(cfg.o.keymaps.restore_location, function()
     M._map_follow_cursor()
   end)
   -- Move down/up in outline and peek that location in code
-  map(config.options.keymaps.down_and_goto, function()
+  map(cfg.o.keymaps.down_and_goto, function()
     M._move_and_goto('down')
   end)
   -- Move down/up in outline and peek that location in code
-  map(config.options.keymaps.up_and_goto, function()
+  map(cfg.o.keymaps.up_and_goto, function()
     M._move_and_goto('up')
   end)
   -- hover symbol
   map(
-    config.options.keymaps.hover_symbol,
+    cfg.o.keymaps.hover_symbol,
     require('symbols-outline.hover').show_hover
   )
   -- preview symbol
   map(
-    config.options.keymaps.toggle_preview,
+    cfg.o.keymaps.toggle_preview,
     require('symbols-outline.preview').toggle
   )
   -- rename symbol
   map(
-    config.options.keymaps.rename_symbol,
+    cfg.o.keymaps.rename_symbol,
     require('symbols-outline.rename').rename
   )
   -- code actions
   map(
-    config.options.keymaps.code_actions,
+    cfg.o.keymaps.code_actions,
     require('symbols-outline.code_action').show_code_actions
   )
   -- show help
   map(
-    config.options.keymaps.show_help,
+    cfg.o.keymaps.show_help,
     require('symbols-outline.config').show_help
   )
   -- close outline
-  map(config.options.keymaps.close, function()
+  map(cfg.o.keymaps.close, function()
     M.view:close()
   end)
   -- toggle fold selection
-  map(config.options.keymaps.fold_toggle, M._toggle_fold)
+  map(cfg.o.keymaps.fold_toggle, M._toggle_fold)
   -- fold selection
-  map(config.options.keymaps.fold, function()
+  map(cfg.o.keymaps.fold, function()
     M._set_folded(true)
   end)
   -- unfold selection
-  map(config.options.keymaps.unfold, function()
+  map(cfg.o.keymaps.unfold, function()
     M._set_folded(false)
   end)
   -- toggle fold all
-  map(config.options.keymaps.fold_toggle_all, M._toggle_all_fold)
+  map(cfg.o.keymaps.fold_toggle_all, M._toggle_all_fold)
   -- fold all
-  map(config.options.keymaps.fold_all, function()
+  map(cfg.o.keymaps.fold_all, function()
     M._set_all_folded(true)
   end)
   -- unfold all
-  map(config.options.keymaps.unfold_all, function()
+  map(cfg.o.keymaps.unfold_all, function()
     M._set_all_folded(false)
   end)
   -- fold reset
-  map(config.options.keymaps.fold_reset, function()
+  map(cfg.o.keymaps.fold_reset, function()
     M._set_all_folded(nil)
   end)
 end
@@ -362,7 +362,7 @@ local function handler(response, opts)
 
   M._highlight_current_item(M.state.code_win)
 
-  if not config.options.focus_on_open or (opts and not opts.focus_outline) then
+  if not cfg.o.outline_window.focus_on_open or (opts and not opts.focus_outline) then
     vim.fn.win_gotoid(M.state.code_win)
   end
 end
@@ -561,7 +561,7 @@ end
 
 ---Set up configuration options for symbols-outline.
 function M.setup(opts)
-  config.setup(opts)
+  cfg.setup(opts)
   ui.setup_highlights()
 
   M.view = View:new()

lua/symbols-outline/parser.lua

@@ -1,6 +1,6 @@
 local symbols = require 'symbols-outline.symbols'
 local ui = require 'symbols-outline.ui'
-local config = require 'symbols-outline.config'
+local cfg = require 'symbols-outline.config'
 local t_utils = require 'symbols-outline.utils.table'
 local lsp_utils = require 'symbols-outline.utils.lsp_utils'
 local folding = require 'symbols-outline.folding'
@@ -17,7 +17,7 @@ local function parse_result(result, depth, hierarchy, parent)
   local ret = {}
 
   for index, value in pairs(result) do
-    if not config.is_symbol_blacklisted(symbols.kinds[value.kind]) then
+    if not cfg.is_symbol_blacklisted(symbols.kinds[value.kind]) then
       -- the hierarchy is basically a table of booleans which tells whether
       -- the parent was the last in its group or not
       local hir = hierarchy or {}
@@ -99,7 +99,7 @@ function M.get_lines(flattened_outline_items)
 
   for node_line, node in ipairs(flattened_outline_items) do
     local depth = node.depth
-    local marker_space = (config.options.fold_markers and 1) or 0
+    local marker_space = (cfg.o.symbol_folding.markers and 1) or 0
 
     local line = t_utils.str_to_table(string.rep(' ', depth + marker_space))
     local running_length = 1
@@ -118,15 +118,15 @@ function M.get_lines(flattened_outline_items)
     end
 
     for index, _ in ipairs(line) do
-      if config.options.guides.enabled then
+      if cfg.o.guides.enabled then
-        local guide_markers = config.options.guides.markers
+        local guide_markers = cfg.o.guides.markers
         if index == 1 then
           line[index] = ''
           -- if index is last, add a bottom marker if current item is last,
           -- else add a middle marker
         elseif index == #line then
           -- add fold markers
-          local fold_markers = config.options.fold_markers
+          local fold_markers = cfg.o.symbol_folding.markers
           if fold_markers and folding.is_foldable(node) then
             if folding.is_folded(node) then
               line[index] = fold_markers[1]
@@ -184,14 +184,14 @@ function M.get_lines(flattened_outline_items)
 
     local hl_start = #string_prefix
     local hl_end = #string_prefix + #node.icon
-    local hl_type = config.options.symbols[symbols.kinds[node.kind]].hl
+    local hl_type = cfg.o.symbols.icons[symbols.kinds[node.kind]].hl
     table.insert(hl_info, { node_line, hl_start, hl_end, hl_type })
 
     node.prefix_length = #string_prefix + #node.icon + 1
   end
 
   local final_hl = {}
-  if config.options.show_symbol_lineno then
+  if cfg.o.outline_items.show_symbol_lineno then
     -- Width of the highest lineno value
     local max_width = #tostring(lineno_max)
     -- Padded prefix to the right of lineno for better readability if linenos
@@ -209,7 +209,7 @@ function M.get_lines(flattened_outline_items)
       })
       node.prefix_length = node.prefix_length + total_offset
     end
-    if config.options.guides.enabled then
+    if cfg.o.guides.enabled then
       for _, hl in ipairs(guide_hl_info) do
         table.insert(final_hl, {
           hl[1],
@@ -222,7 +222,7 @@ function M.get_lines(flattened_outline_items)
   else
     -- Merge lists hl_info and guide_hl_info
     final_hl = hl_info
-    if config.options.guides.enabled then
+    if cfg.o.guides.enabled then
       for _, hl in ipairs(guide_hl_info) do
         table.insert(final_hl, hl)
       end

lua/symbols-outline/preview.lua

@@ -1,5 +1,5 @@
 local so = require 'symbols-outline'
-local config = require 'symbols-outline.config'
+local cfg = require 'symbols-outline.config'
 local hover = require 'symbols-outline.hover'
 
 local M = {}
@@ -31,11 +31,11 @@ local function get_offset()
   local width = 53
   local height = 0
 
-  if config.has_numbers() then
+  if cfg.has_numbers() then
     width = width + 4
   end
 
-  if config.options.position == 'right' then
+  if cfg.o.outline_window.position == 'right' then
     width = 0 - width
   else
     width = vim.api.nvim_win_get_width(outline_winnr) + 1
@@ -91,10 +91,10 @@ local function setup_preview_buf()
 end
 
 local function set_bg_hl()
-  local winhi = 'Normal:' .. config.options.preview_bg_highlight
+  local winhi = 'Normal:' .. cfg.o.preview_window.bg_hl
   vim.api.nvim_win_set_option(state.preview_win, 'winhighlight', winhi)
   -- vim.api.nvim_win_set_option(state.hover_win, 'winhighlight', winhi)
-  local winblend = config.options.winblend
+  local winblend = cfg.o.preview_window.winblend
   vim.api.nvim_win_set_option(state.preview_win, 'winblend', winblend)
   -- vim.api.nvim_win_set_option(state.hover_win, 'winblend', winblend)
 end
@@ -119,7 +119,7 @@ local function show_preview()
       col = offsets[2],
       -- Position preview window middle-aligned vertically
       row = math.ceil((height - winheight) / 2),
-      border = config.options.border,
+      border = cfg.o.preview_window.border,
     })
     setup_preview_buf()
   else
@@ -134,7 +134,7 @@ function M.show()
 
   show_preview()
   set_bg_hl()
-  if config.options.open_hover_on_preview then
+  if cfg.o.preview_window.open_hover_on_preview then
     hover.show_hover()
   end
 end

lua/symbols-outline/rename.lua

@@ -19,7 +19,7 @@ function M.rename()
 
   local params = get_rename_params(node, so.state.code_win)
 
-  local new_name = vim.fn.input('New Name: ', node.name)
+  local new_name = vim.fn.input({ prompt = 'New Name: ', default = node.name })
   if not new_name or new_name == '' or new_name == node.name then
     return
   end

lua/symbols-outline/symbols.lua

@@ -40,7 +40,7 @@ M.kinds = {
 }
 
 function M.icon_from_kind(kind)
-  local symbols = config.options.symbols
+  local symbols = config.o.symbols.icons
 
   if type(kind) == 'string' then
     return symbols[kind].icon

lua/symbols-outline/view.lua

@@ -1,4 +1,4 @@
-local config = require 'symbols-outline.config'
+local cfg = require('symbols-outline.config')
 
 local View = {}
 
@@ -14,9 +14,9 @@ function View:setup_view()
   -- delete buffer when window is closed / buffer is hidden
   vim.api.nvim_buf_set_option(self.bufnr, 'bufhidden', 'delete')
   -- create a split
-  vim.cmd(config.get_split_command())
+  vim.cmd(cfg.get_split_command())
   -- resize to a % of the current window size
-  vim.cmd('vertical resize ' .. config.get_window_width())
+  vim.cmd('vertical resize ' .. cfg.get_window_width())
 
   -- get current (outline) window and attach our buffer to it
   self.winnr = vim.api.nvim_get_current_win()
@@ -30,7 +30,7 @@ function View:setup_view()
   vim.api.nvim_win_set_option(self.winnr, 'relativenumber', false)
   vim.api.nvim_win_set_option(self.winnr, 'winfixwidth', true)
   vim.api.nvim_win_set_option(self.winnr, 'list', false)
-  vim.api.nvim_win_set_option(self.winnr, 'wrap', config.options.wrap)
+  vim.api.nvim_win_set_option(self.winnr, 'wrap', cfg.o.outline_window.wrap)
   vim.api.nvim_win_set_option(self.winnr, 'linebreak', true) -- only has effect when wrap=true
   vim.api.nvim_win_set_option(self.winnr, 'breakindent', true) -- only has effect when wrap=true
   --  Would be nice to use guides.markers.vertical as part of showbreak to keep
@@ -43,15 +43,15 @@ function View:setup_view()
   vim.api.nvim_buf_set_option(self.bufnr, 'filetype', 'Outline')
   vim.api.nvim_buf_set_option(self.bufnr, 'modifiable', false)
 
-  if config.options.show_numbers or config.options.show_relative_numbers then
+  if cfg.o.outline_window.show_numbers or cfg.o.outline_window.show_relative_numbers then
     vim.api.nvim_win_set_option(self.winnr, 'nu', true)
   end
 
-  if config.options.show_relative_numbers then
+  if cfg.o.outline_window.show_relative_numbers then
     vim.api.nvim_win_set_option(self.winnr, 'rnu', true)
   end
 
-  if config.options.show_cursorline then
+  if cfg.o.outline_window.show_cursorline then
     vim.api.nvim_win_set_option(self.winnr, 'cursorline', true)
   end
 end

lua/symbols-outline/writer.lua

@@ -1,5 +1,5 @@
 local parser = require 'symbols-outline.parser'
-local config = require 'symbols-outline.config'
+local cfg = require('symbols-outline.config')
 local ui = require 'symbols-outline.ui'
 
 local M = {}
@@ -52,7 +52,7 @@ function M.write_details(bufnr, lines)
   if not is_buffer_outline(bufnr) then
     return
   end
-  if not config.options.show_symbol_details then
+  if not cfg.o.outline_items.show_symbol_details then
     return
   end
 
@@ -69,7 +69,7 @@ function M.write_lineno(bufnr, lines, max)
   if not is_buffer_outline(bufnr) then
     return
   end
-  if not config.options.show_symbol_lineno then
+  if not cfg.o.outline_items.show_symbol_lineno then
     return
   end
   local maxwidth = #tostring(max)
@@ -90,7 +90,7 @@ local function clear_virt_text(bufnr)
 end
 
 M.add_hover_highlights = function(bufnr, nodes)
-  if not config.options.highlight_hovered_item then
+  if not cfg.o.outline_items.highlight_hovered_item then
     return
   end
 
@@ -101,7 +101,7 @@ M.add_hover_highlights = function(bufnr, nodes)
       goto continue
     end
 
-    local marker_fac = (config.options.fold_markers and 1) or 0
+    local marker_fac = (cfg.o.symbol_folding.markers and 1) or 0
     if node.prefix_length then
       ui.add_hover_highlight(
         bufnr,