switch {
	case bytes.HasPrefix(data, slashSlash):
		comment, _, _ = bytes.Cut(data[2:], newline)
	case bytes.HasPrefix(data, slashStar):
		var ok bool
		comment, _, ok = bytes.Cut(data[2:], starSlash)
		if !ok {
			// malformed comment
			return "", 0
		}
		if bytes.Contains(comment, newline) {
			return "", 0
		}
	}
	comment = bytes.TrimSpace(comment)

			text := commentText(msg)
			if (col == colbase || msg[1] == '*') && strings.HasPrefix(text, "line ") {
				var pos Pos // position immediately following the comment
				if msg[1] == '/' {
					// line comment (newline is part of the comment)
					pos = MakePos(p.file, line+1, colbase)
				} else {
					// regular comment
					// (if the comment spans multiple lines it's not
					// a valid line directive and will be discarded

	}{
		{
			name:     "empty",
			expected: EnvoyTextLogFormat,
		},
		{
			name:         "contains newline",
			formatString: "[%START_TIME%] %REQ(:METHOD)% %REQ(X-ENVOY-ORIGINAL-PATH?:PATH)% \n",
			expected:     "[%START_TIME%] %REQ(:METHOD)% %REQ(X-ENVOY-ORIGINAL-PATH?:PATH)% \n",
		},
		{
			name:         "miss newline",
			formatString: "[%START_TIME%] %REQ(:METHOD)% %REQ(X-ENVOY-ORIGINAL-PATH?:PATH)%",

			AnyField: AnyHolder{XMLName: Name{Local: "empty"}},
		},
	},
	{
		ExpectXML: `<a><nested><value>newline: &#xA;; cr: &#xD;; tab: &#x9;;</value></nested><AnyField></AnyField></a>`,
		Value: &AnyTest{
			Nested:   "newline: \n; cr: \r; tab: \t;",
			AnyField: AnyHolder{XMLName: Name{Local: "AnyField"}},
		},
	},
	{

	Literal                         // treat pattern as literal string
	ClassNL                         // allow character classes like [^a-z] and [[:space:]] to match newline
	DotNL                           // allow . to match newline
	OneLine                         // treat ^ and $ as only matching at beginning and end of text
	NonGreedy                       // make repetition operators default to non-greedy

			// Found a frame that wasn't inside a helper function.
			return frame
		}
	}
	return firstFrame
}

// decorate prefixes the string with the file and line of the call site
// and inserts the final newline if needed and indentation spaces for formatting.
// This function must be called with c.mu held.
func (c *common) decorate(s string, skip int) string {
	frame := c.frameSkip(skip)
	file := frame.File
	line := frame.Line

			norun = "[-fuzz matches more than one fuzz test, won't fuzz]"
		}
		if len(out) > 0 && !bytes.HasSuffix(out, []byte("\n")) {
			// Ensure that the output ends with a newline before the "ok"
			// line we're about to print (https://golang.org/issue/49317).
			cmd.Stdout.Write([]byte("\n"))
		}

				allErrors = append(allErrors, field.InternalError(fldPath.Child("valueExpression"), result.Error))
			}
		}
	}
	return allErrors
}

var newlineMatcher = regexp.MustCompile(`[\n\r]+`) // valid newline chars in CEL grammar
func hasNewlines(s string) bool {
	return newlineMatcher.MatchString(s)
}

// ValidateValidatingAdmissionPolicyBinding validates a ValidatingAdmissionPolicyBinding before create.

	if _, err := Stat(name); err != nil {
		t.Skip(err)
	}
	data, err := ReadFile(name)
	if err != nil {
		t.Fatal(err)
	}
	if len(data) == 0 || data[len(data)-1] != '\n' {
		t.Fatalf("read %s: not newline-terminated: %q", name, data)
	}
}

func TestDirFSReadFileProc(t *testing.T) {
	t.Parallel()

	fsys := DirFS("/")
	name := "proc/sys/fs/pipe-max-size"

	if err != nil {
		t.Fatal("reading test case .go file:", err)
	} else if bytes.HasPrefix(srcBytes, []byte{'\n'}) {
		t.Fatal(".go file source starts with a newline")
	}
	src := string(srcBytes)

	// Execution recipe is contained in a comment in
	// the first non-empty line that is not a build constraint.
	var action string