fix(config): options.darken.sidebars.enabled

Problem: `options.darken.sidebars.enabled` and
         `options.darken.sidebars.enable` both exist, but it is only one
         option. The default in `config.lua` is `enable`, but it is
         referred to as `enabled` as well (both in code and docs). It
         used to be `enable` but was renamed to `enabled`, so it is
         technically supposed to be `options.darken.sidebars.enabled` at
         this time (as of this commit's parent).

Solution: Revert `options.darken.sidebars.enabled` back to
          `options.darken.sidebars.enable`. This brings it back in-line
          with the changelog and runtime deprecation checks. `enable` is
          also more consistent as this is what is used in other parts
          of the config (e.g. config for `modules`). Continue to accept
          `options.darken.sidebars.enabled` for backwards-compatibility.
          Either may be used: `enabled` is now coerced to `enable` in
          `config.lua`.

Problem: In a couple of places, `options.darken.sidebars` is checked for
         truthiness. This seems to be a typo of
         `options.darken.sidebars.enable` which is a boolean (unlike the
         former, which is a table by default and also documented as a
         table). Tables are always truthy.

Solution: Use `options.darken.sidebars.enable` instead of
          `options.darken.sidebars` in conditionals.

Reverts: fff3e20, 806903c
Fixes: #306

README.md

@@ -283,7 +283,7 @@ require('github-theme').setup({
     darken = {                 -- Darken floating windows and sidebar-like windows
       floats = true,
       sidebars = {
-        enabled = true,
+        enable = true,
         list = {},             -- Apply dark background to specific windows
       },
     },

Usage.md

@@ -249,8 +249,8 @@ Another setting is for sidebars, which is configured in the `sidebars` sub-table
 
 #### options.darken.sidebars {table}
 
-The `sidebars` sub table of `darken` contains settings for sidebar-like windows. It has two configurations: `enabled` is used to assign a darker background
-to the listed windows, and `list` specifies the windows to be included in the list.
+The `sidebars` sub table of `darken` contains settings for sidebar-like windows. It has two configurations: `enable` is used to assign a darker background
+to the listed windows, and `list` specifies the windows to be darkened.
 
 Example:
 
@@ -259,7 +259,7 @@ local options = {
   darken = {
     floats = false,
     sidebars = {
-      enabled = true,
+      enable = true,
       list = {'qf', 'netrw'} -- default is {}
     }
   }

doc/github-nvim-theme.txt

@@ -331,9 +331,9 @@ sub-table.
 options.darken.sidebars {table}    *github-nvim-theme-options.darken.sidebars*
 
 The `sidebars` sub table of `darken` contains settings for sidebar-like
-windows. It has two configurations: `enabled` is used to assign a darker
+windows. It has two configurations: `enable` is used to assign a darker
 background to the listed windows, and `list` specifies the windows to be
-included in the list.
+darkened.
 
 Example:
 
@@ -342,7 +342,7 @@ Example:
       darken = {
         floats = false,
         sidebars = {
-          enabled = true,
+          enable = true,
           list = {'qf', 'netrw'} -- default is {}
         }
       }

lua/github-theme/config.lua

@@ -90,6 +90,20 @@ end
 
 function M.set_options(opts)
   opts = opts or {}
+
+  -- Allow `enabled` for backwards-compatibility, but `enable` is canonical and
+  -- has precedence.
+  if
+    type(opts.darken) == 'table'
+    and type(opts.darken.sidebars) == 'table'
+    and opts.darken.sidebars.enabled ~= nil
+  then
+    if opts.darken.sidebars.enable == nil then
+      opts.darken.sidebars.enable = opts.darken.sidebars.enabled
+    end
+    opts.darken.sidebars.enabled = nil
+  end
+
   M.options = collect.deep_extend(M.options, opts)
   M.has_options = true
 end

lua/github-theme/group/editor.lua

@@ -3,7 +3,7 @@ local C = require('github-theme.lib.color')
 local M = {}
 
 function M.get(spec, config)
-  local dark_sb = config.darken.sidebars.enabled
+  local dark_sb = config.darken.sidebars.enable
   local hide_eof = config.hide_end_of_buffer
   local inactive = config.dim_inactive
   local inv = config.inverse

lua/github-theme/group/modules/neotree.lua

@@ -7,7 +7,7 @@ local M = {}
 
 function M.get(spec, config, opts)
   local hide_eof = config.hide_end_of_buffer
-  local dark_sb = config.darken.sidebars
+  local dark_sb = config.darken.sidebars.enable
   local c = spec.palette
 
   local function blend(color, a)

lua/github-theme/group/modules/nvimtree.lua

@@ -4,7 +4,7 @@ local M = {}
 
 function M.get(spec, config, opts)
   local hide_eof = config.hide_end_of_buffer
-  local dark_sb = config.darken.sidebars
+  local dark_sb = config.darken.sidebars.enable
   local c = spec.palette
 
   -- stylua: ignore