Douglas 1c18e37a7c
Always populate config record during startup (#14435)
# Description

As a bit of a follow-on to #13802 and #14249, this (pretty much a
"one-line" change) really does *always* populate the `$env.config`
record with the `nu-protocol::config` defaults during startup. This
means that an `$env.config` record is value (with defaults) even during:

* `nu -n` to suppress loading of config files
* `nu -c <commandstring>`
* `nu <script>`

# User-Facing Changes

There should be no case in which there isn't a valid `$env.config`.

* Before:

  ```nushell
  nu -c "$env.config"
  # -> Error
  ```

* After:

  ```nushell
  nu -c "$env.config"
  # -> Default $env.config record
  ```

Startup time impact is negligible (17.072µs from `perf!` on my system) -
Seems well worth it.

# Tests + Formatting

Added tests for several `-n -c` cases.

- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting

Config chapter update still in progress.
2024-11-27 13:52:47 +08:00
..
2024-10-22 10:34:41 -05:00