`indentRainbow.ignoreLinePatterns` example for settings.json and comment mismatch.

[joshinils]

  // Example of regular expression in JSON (note double backslash to escape characters)
  "indentRainbow.ignoreLinePatterns" : [
    "/[ \t]* [*]/g", // lines begining with <whitespace><space>*
    "/[ \t]+[/]{2}/g" // lines begininning with <whitespace>//
  ]

\t is a tab.
\\s is whitespace (equivalent to [\\r\\n\\t\\f\\v ]).

I think including an example with an escaped backslash would be good too, ref #189.

(Technically, comments aren't a thing in JSON, but VS Code ignores this, too. 🤷‍♂️ )

[oderwat]

"Error" display is considered a design error by me. I will not change anything about it. I would remove it if there were not over 2 million installations with it.

[MTsocute]

Try This One

    "indentRainbow.ignoreLinePatterns": [
        "^\\s*\\*",
        "^\\s*//"
    ]