# Description
Fixes: #13189
The issue is caused `error make` returns a `Value::Errror`, and when
nushell pass it to `table -e` in `std help`, it directly stop and render
the error message.
To solve it, I think it's safe to make these examples return None
directly, it doesn't change the reult of `help error make`.
# User-Facing Changes
## Before
```nushell
~> help "error make"
Error: nu:🐚:eval_block_with_input
× Eval block failed with pipeline input
╭─[NU_STDLIB_VIRTUAL_DIR/std/help.nu:692:21]
691 │ ] {
692 │ let commands = (scope commands | sort-by name)
· ───────┬──────
· ╰── source value
693 │
╰────
Error: × my custom error message
```
## After
```nushell
Create an error.
Search terms: panic, crash, throw
Category: core
This command:
- does not create a scope.
- is a built-in command.
- is a subcommand.
- is not part of a plugin.
- is not a custom command.
- is not a keyword.
Usage:
> error make {flags} <error_struct>
Flags:
-u, --unspanned - remove the origin label from the error
-h, --help - Display the help message for this command
Signatures:
<nothing> | error make[ <record>] -> <any>
Parameters:
error_struct: <record> The error to create.
Examples:
Create a simple custom error
> error make {msg: "my custom error message"}
Create a more complex custom error
> error make {
msg: "my custom error message"
label: {
text: "my custom label text" # not mandatory unless $.label exists
# optional
span: {
# if $.label.span exists, both start and end must be present
start: 123
end: 456
}
}
help: "A help string, suggesting a fix to the user" # optional
}
Create a custom error for a custom command that shows the span of the argument
> def foo [x] {
error make {
msg: "this is fishy"
label: {
text: "fish right here"
span: (metadata $x).span
}
}
}
```
# Tests + Formatting
Added 1 test
# Description
Fixes: #12941
~~The issue is cause by some columns(is_builtin, is_plugin, is_custom,
is_keyword) are removed in #10023~~
Edit: I'm wrong
# Tests + Formatting
Added one test for `std help`
