Disable `trimwhitespace` and `drawwhitespace` via their configs (#1446)

Instead of completely disabling them, we now use their internal toggle.

Also moved `drawwhitespace` commands inside the plugin.

---

* Fixed bug where commands would show even when plugin was disbled. Also removed antiquated way of disabling.

* Fixed typos.

* Also moved trimwhitespace out of config, if it already has a default enabled value of false.

* Changed documentation.

* Clarified comments.

data/core/command.lua

@@ -107,7 +107,7 @@ end
 function command.add_defaults()
   local reg = {
     "core", "root", "command", "doc", "findreplace",
-    "files", "drawwhitespace", "dialog", "log", "statusbar"
+    "files", "dialog", "log", "statusbar"
   }
   for _, name in ipairs(reg) do
     require("core.commands." .. name)

data/core/commands/drawwhitespace.lua

@@ -1,16 +0,0 @@
-local command = require "core.command"
-local config = require "core.config"
-
-command.add(nil, {
-  ["draw-whitespace:toggle"]  = function()
-    config.draw_whitespace = not config.draw_whitespace
-  end,
-
-  ["draw-whitespace:disable"] = function()
-    config.draw_whitespace = false
-  end,
-
-  ["draw-whitespace:enable"]  = function()
-    config.draw_whitespace = true
-  end,
-})

data/core/config.lua

@@ -101,8 +101,5 @@ setmetatable(config.plugins, {
   end
 })
 
--- Disable these plugins by default.
-config.plugins.trimwhitespace = false
-config.plugins.drawwhitespace = false
 
 return config

data/core/init.lua

@@ -531,12 +531,9 @@ local style = require "core.style"
 
 ------------------------------ Plugins ----------------------------------------
 
--- enable or disable plugin loading setting config entries:
+-- disable plugin loading setting config entries:
 
--- enable plugins.trimwhitespace, otherwise it is disabled by default:
--- config.plugins.trimwhitespace = true
---
--- disable detectindent, otherwise it is enabled by default
+-- disable plugin detectindent, otherwise it is enabled by default:
 -- config.plugins.detectindent = false
 
 ---------------------------- Miscellaneous -------------------------------------

data/plugins/drawwhitespace.lua

@@ -4,11 +4,12 @@ local core = require "core"
 local style = require "core.style"
 local DocView = require "core.docview"
 local common = require "core.common"
+local command = require "core.command"
 local config = require "core.config"
 local Highlighter = require "core.doc.highlighter"
 
 config.plugins.drawwhitespace = common.merge({
-  enabled = true,
+  enabled = false,
   show_leading = true,
   show_trailing = true,
   show_middle = true,
@@ -43,7 +44,7 @@ config.plugins.drawwhitespace = common.merge({
       description = "Disable or enable the drawing of white spaces.",
       path = "enabled",
       type = "toggle",
-      default = true
+      default = false
     },
     {
       label = "Show Leading",
@@ -342,3 +343,18 @@ function DocView:draw_line_text(idx, x, y)
 
   return draw_line_text(self, idx, x, y)
 end
+
+
+command.add(nil, {
+  ["draw-whitespace:toggle"]  = function()
+    config.plugins.drawwhitespace.enabled = not config.drawwhitespace.enabled
+  end,
+
+  ["draw-whitespace:disable"] = function()
+    config.plugins.drawwhitespace.enabled = false
+  end,
+
+  ["draw-whitespace:enable"]  = function()
+    config.plugins.drawwhitespace.enabled = true
+  end,
+})

data/plugins/trimwhitespace.lua

@@ -8,7 +8,7 @@ local Doc = require "core.doc"
 ---@field enabled boolean
 ---@field trim_empty_end_lines boolean
 config.plugins.trimwhitespace = common.merge({
-  enabled = true,
+  enabled = false,
   trim_empty_end_lines = false,
   config_spec = {
     name = "Trim Whitespace",
@@ -17,7 +17,7 @@ config.plugins.trimwhitespace = common.merge({
       description = "Disable or enable the trimming of white spaces by default.",
       path = "enabled",
       type = "toggle",
-      default = true
+      default = false
     },
     {
       label = "Trim Empty End Lines",