rust-analyzer/editors/code/language-configuration.json

{
    "comments": {
        "lineComment": "//",
        "blockComment": [ "/*", "*/" ]
    },
    "brackets": [
        ["{", "}"],
        ["[", "]"],
        ["(", ")"],
        ["<", ">"]
    ],
    "autoClosingPairs": [
        { "open": "{", "close": "}" },
        { "open": "[", "close": "]" },
        { "open": "(", "close": ")" },
        { "open": "\"", "close": "\"", "notIn": ["string"] },
        { "open": "/*", "close": " */" }
    ],
    "autoCloseBefore": ";:.,=}])> \n\t",
    "surroundingPairs": [
        ["{", "}"],
        ["[", "]"],
        ["(", ")"],
        ["<", ">"],
        ["\"", "\""],
        ["'", "'"],
        ["|", "|"]
    ],
    "indentationRules": {
        "increaseIndentPattern": "^.*\\{[^}\"']*$|^.*\\([^\\)\"']*$",
        "decreaseIndentPattern": "^\\s*(\\s*\\/[*].*[*]\\/\\s*)*[})]"
    },
    "folding": {
        "markers": {
            "start": "^\\s*//\\s*#?region\\b",
            "end": "^\\s*//\\s*#?endregion\\b"
        }
    }
}