an integer value identifying a Unicode code point.
A rune literal is expressed as one or more characters enclosed in single quotes,
as in <code>'x'</code> or <code>'\n'</code>.
Within the quotes, any character may appear except newline and unescaped single
quote. A single quoted character represents the Unicode value
of the character itself,
while multi-character sequences beginning with a backslash encode
values in various formats.
</p>

<p>

			want:       []string{"must only contain printable UTF-8 characters; non-printable character found at index 12"},
		},
		{
			name:       "null character",
			deprecated: true,
			warning:    pointer.StringPtr("Test message\u0000"),
			want:       []string{"must only contain printable UTF-8 characters; non-printable character found at index 12"},
		},
		{
			name:       "non-utf-8",

                  here is that the higher the number of dots in the hostname to the
                  right of the wildcard character, the higher the precedence. \n The
                  wildcard character will match any number of characters _and dots_
                  to the left, however, so `\"*.example.com\"` will match both `\"foo.bar.example.com\"`

	maxRunAsUserNameUserLength       = 104
)

var (
	// control characters are not permitted in the runAsUserName field.
	ctrlRegex = regexp.MustCompile(`[[:cntrl:]]+`)

	// a valid NetBios Domain name cannot start with a dot, has at least 1 character,
	// at most 15 characters, and it cannot the characters: \ / : * ? " < > |
	validNetBiosRegex = regexp.MustCompile(`^[^\\/:\*\?"<>|\.][^\\/:\*\?"<>|]{0,14}$`)

// ResourceName is the name identifying various resources in a ResourceList.
type ResourceName string

// Resource names must be not more than 63 characters, consisting of upper- or lower-case alphanumeric characters,
// with the -, _, and . characters allowed anywhere, except the first or last character.
// The default convention, matching that for annotations, is to use lower-case names, with dashes, rather than
// camel case, separating compound words.

### Action Required

* action required: the API server and client-go libraries have been fixed to support additional non-alpha-numeric characters in UserInfo "extra" data keys. Both should be updated in order to properly support extra data containing "/" characters or other characters disallowed in HTTP headers. ([#65799](https://github.com/kubernetes/kubernetes/pull/65799), [@dekkagaijin](https://github.com/dekkagaijin))

            }
          },
          {
            "description": "fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by https://golang.org/pkg/unicode/#IsPrint.",
            "in": "query",
            "name": "fieldManager",
            "schema": {
              "type": "string",

...

### Auth

- Fixed OpenID Connect (OIDC) token refresh when the client secret contains a special character. ([#76914](https://github.com/kubernetes/kubernetes/pull/76914), [@tsuna](https://github.com/tsuna))

          },