# Description
This PR standardizes updates to the config through a new
`UpdateFromValue` trait. For now, this trait is private in case we need
to make changes to it.
Note that this PR adds some additional `ShellError` cases to create
standard error messages for config errors. A follow-up PR will move
usages of the old error cases to these new ones. This PR also uses
`Type::custom` in lots of places (e.g., for string enums). Not sure if
this is something we want to encourage.
# User-Facing Changes
Should be none.
# Description
This PR updates the shell_integration defaults so that they work as
described in default_config.nu even when there is no config.nu file.
closes#13924
# User-Facing Changes
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# Tests + Formatting
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# After Submitting
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# Description
Cleans up and refactors the config code using the `IntoValue` macro.
Shoutout to @cptpiepmatz for making the macro!
# User-Facing Changes
Should be none.
# After Submitting
Somehow refactor the reverse transformation.
