Suggest comma multiple Following from rust-lang/rust#157545 If there are multiple missing comma's, suggest fixing all of them in one step to avoid error cascade. For example: ``` error: attribute items not separated with `,` | LL | name = "name" | ^ help: try adding `,` here ``` followed by ``` error: attribute items not separated with `,` | LL | kind = "static" | ^ help: try adding `,` here ``` after adding the comma. Now this becomes one error: ``` error: attribute items not separated with `,` --> $DIR/attr-missing-comma.rs:10:18 | LL | name = "name" | ^ | help: try adding `,` here | LL | name = "name", | + help: try adding `,` here | LL | kind = "static", | + ```