Each Array element on a line

[beeb]

I am modifying an existing document where a key is an Array of strings, and the original document has a line return after the leading [, then each element on its own line, indented to the right, then the closing ] on its own line at the end.

When I get a mutable reference to the key with doc.get_mut("key").map(|v| v.as_array_mut()) and then replace its content, the format changes and it puts the array on a single line ["item1", "item2"].

Is there a way to make it like so?

key = [
    "item1",
    "item2",
]

[epage]

You'll need to set the Decor for each element to match your desired style.

As an example

toml/crates/toml/src/fmt.rs

Lines 52 to 65 in 1bfb7d7

	fn visit_array_mut(&mut self, node: &mut toml_edit::Array) {
	toml_edit::visit_mut::visit_array_mut(self, node);
	if !self.multiline_array || (0..=1).contains(&node.len()) {
	node.set_trailing("");
	node.set_trailing_comma(false);
	} else {
	for item in node.iter_mut() {
	item.decor_mut().set_prefix("\n ");
	}
	node.set_trailing("\n");
	node.set_trailing_comma(true);
	}
	}

[beeb]

Very helpful, thanks!