{
 "max_runes": 255,
 "_doc": "BUG-3115: shared by internal/models/title_limit_parity_test.go and web/src/lib/items/titleLimit.test.ts. Each title is prefix + unit*count + suffix. go_space is every code point Go's unicode.IsSpace accepts (the Go half enumerates the whole range and must find exactly these). If you add a case, add it here, not to one language's test.",
 "go_space": [
  9,
  10,
  11,
  12,
  13,
  32,
  133,
  160,
  5760,
  8192,
  8193,
  8194,
  8195,
  8196,
  8197,
  8198,
  8199,
  8200,
  8201,
  8202,
  8232,
  8233,
  8239,
  8287,
  12288
 ],
 "cases": [
  {
   "name": "at the limit",
   "why": "255 is allowed",
   "prefix": "",
   "unit": "a",
   "count": 255,
   "suffix": "",
   "runes": 255,
   "ok": true
  },
  {
   "name": "one over",
   "why": "256 is refused",
   "prefix": "",
   "unit": "a",
   "count": 256,
   "suffix": "",
   "runes": 256,
   "ok": false
  },
  {
   "name": "astral at the limit",
   "why": "an emoji is ONE rune but TWO UTF-16 units; a .length or maxlength count would refuse this",
   "prefix": "",
   "unit": "\ud83d\ude00",
   "count": 255,
   "suffix": "",
   "runes": 255,
   "ok": true
  },
  {
   "name": "astral one over",
   "why": "counted by code point",
   "prefix": "",
   "unit": "\ud83d\ude00",
   "count": 256,
   "suffix": "",
   "runes": 256,
   "ok": false
  },
  {
   "name": "surrounding spaces are not counted",
   "why": "the server validates the TrimSpace'd title",
   "prefix": "   ",
   "unit": "a",
   "count": 255,
   "suffix": "\t\n ",
   "runes": 255,
   "ok": true
  },
  {
   "name": "NEL is trimmed by Go",
   "why": "U+0085 is unicode.IsSpace but NOT stripped by JS String.trim",
   "prefix": "\u0085",
   "unit": "a",
   "count": 255,
   "suffix": "\u0085",
   "runes": 255,
   "ok": true
  },
  {
   "name": "BOM is NOT trimmed by Go",
   "why": "U+FEFF is stripped by JS String.trim but is not unicode.IsSpace, so the server counts it",
   "prefix": "",
   "unit": "a",
   "count": 255,
   "suffix": "\ufeff",
   "runes": 256,
   "ok": false
  },
  {
   "name": "interior whitespace counts",
   "why": "only the ends are trimmed",
   "prefix": "",
   "unit": "a ",
   "count": 128,
   "suffix": "",
   "runes": 255,
   "ok": true
  }
 ]
}