coc-settings.json

{
  "diagnostic.errorSign": "✖",
  "diagnostic.warningSign": "⚠",
  "diagnostic.infoSign": "ⓘ",
  "diagnostic.hintSign": "\uf834",
  "suggest.completionItemKindLabels": {
    "keyword": "\uf1de", //  sliders
    "variable": "\ue79b", //  isometric box
    "value": "\uf89f", //  digits 123
    "operator": "\u03a8", // Ψ greek letter psi
    "constructor": "\uf0ad", //  wrench
    "function": "\u0192", // ƒ latin small letter F
    "reference": "\ue79b", //  retweet symbol
    "constant": "\uf8fe", //  greek letter pi
    "method": "\uf794", //  mdi-function "f"
    "struct": "\ufb44", // פּ file tree
    "class": "\uf0e8", //  hierarchy / site map
    "interface": "\uf417", //  git commit / line interrupted by circle
    "text": "\ue612", //  left-justified lines
    "enum": "\uf02c", //  pair of tags
    "enumMember": "\uf02b", //  tag
    "module": "\uf40d", //  code file / page showing angle brackets
    "color": "\ue22b", //  palette
    "property": "\ue624", //  predator dots
    "field": "\uf1b2", //  left-justified sorted lines
    "unit": "\uf475", //  negative-space ellipsis
    "event": "\ufacd", // 鬒clock alert / clock with exclamation mark
    "file": "\uf15b", //  file / blank page
    "folder": "\uf07b", //  folder
    "snippet": "\ue60b", //  pair of curly braces
    "typeParameter": "\uf728", //  file presentation box
    "default": "\uf29c" //  question mark in circle
  }
}