Add Run nvim With Factory Defaults as a Neovim TIL

neovim/run-nvim-with-factory-defaults.md

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+# Run nvim With Factory Defaults
+
+Most of the fun of using Neovim is tailoring it to your exact needs with custom
+configurations. Your configuration can be made up of environment variables,
+`init.lua`/`init.vim`, and user directories on the `runtimepath`.
+
+Perhaps though, you want to load neovim with its "factory defaults". You want
+to ignore all your custom config and your _shada_ (shared data) file. I wanted
+to do just that recently to verify that neovim has the `ft-manpage` plugin
+enabled by default (as opposed to enabled somewhere in the labryinth of my
+config files).
+
+The `--clean` flag does just this. It loads built-in plugins, but none of the
+user defined config.
+
+```bash
+$ nvim --clean
+```
+
+This is different than `nvim -u NONE` which excludes all plugins, including
+built-in ones.
+
+See `man nvim` and `:help --clean` for more details.