coc-config.json

{
  "languageserver": {
    "ccls": {
      "command": "ccls",
      "filetypes": ["c", "cpp", "cuda", "objc", "objcpp"],
      "rootPatterns": [".ccls-root", "compile_commands.json"],
      "initializationOptions": {
        "cache": {
          "directory": ".ccls-cache"
        },
		"highlight": { "lsRanges": true },
        "client": {
          "snippetSupport": true
        }
      },
      "disableDiagnostics": true,
      "disableCompletion": true,
    }
  },
  "diagnostic.checkCurrentLine": true,
  "diagnostic.virtualText": true,
  "diagnostic.virtualTextCurrentLineOnly": false,
  "suggest.completionItemKindLabels": {
    "function": "FUNCTION",
    "method": "METHOD",
    "variable": "VARIABLE",
    "constant": "CONSTANT",
    "struct": "STRUCT",
    "class": "CLASS",
    "interface": "INTERFACE",
    "text": "TEXT",
    "enum": "ENUM",
    "enumMember": "ENUMMEMBER",
    "module": "MODULE",
    "color": "COLOR",
    "property": "PROPERTY",
    "field": "FIELD",
    "unit": "UNIT",
    "file": "FILE",
    "value": "VALUE",
    "event": "EVENT",
    "folder": "FOLDER",
    "keyword": "KEYWORD",
    "snippet": "SNIPPET",
    "operator": "OPERATOR",
    "reference": "REFERENCE",
    "typeParameter": "TYPEPARAMETER",
    "default": "DEFAULT"
  }
}