for more information.
`,
}

var useR = cmdUse.Flag.Bool("r", false, "")

func init() {
	cmdUse.Run = runUse // break init cycle

	base.AddChdirFlag(&cmdUse.Flag)
	base.AddModCommonFlags(&cmdUse.Flag)
}

func runUse(ctx context.Context, cmd *base.Command, args []string) {
	modload.ForceUseModules = true
	modload.InitWorkfile()
	gowork := modload.WorkFilePath()

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Test rune constants, expressions and types.
// Compiles but does not run.

package rune

var (
	r0 = 'a'
	r1 = 'a'+1
	r2 = 1+'a'
	r3 = 'a'*2
	r4 = 'a'/2
	r5 = 'a'<<1
	r6 = 'b'<<2
	r7 int32

	r = []rune{r0, r1, r2, r3, r4, r5, r6, r7}
)

var (
	f0 = 1.2
	f1 = 1.2/'a'

	f = []float64{f0, f1}

		} else {
			curDir = RightToLeft
		}
		if curDir != prevDir {
			if i > 0 {
				o.runes = append(o.runes, runes[prevI:i])
				o.directions = append(o.directions, prevDir)
				o.startpos = append(o.startpos, prevI)
			}
			prevI = i
			prevDir = curDir
		}
	}
	o.runes = append(o.runes, runes[prevI:])
	o.directions = append(o.directions, prevDir)
	o.startpos = append(o.startpos, prevI)
	return o

docs:
- 'https://istio.io/latest/docs/setup/additional-setup/sidecar-injection/#customizing-injection'
releaseNotes:
- |

			if syntax.Flags(inst.Arg)&syntax.FoldCase != 0 {
				r0 := inst.Rune[0]
				runes = append(runes, r0, r0)
				for r1 := unicode.SimpleFold(r0); r1 != r0; r1 = unicode.SimpleFold(r1) {
					runes = append(runes, r1, r1)
				}
				slices.Sort(runes)
			} else {
				runes = append(runes, inst.Rune[0], inst.Rune[0])
			}
			onePassRunes[pc] = runes
			inst.Next = make([]uint32, len(onePassRunes[pc])/2+1)
			for i := range inst.Next {

				// is odd so we take the low bit from _case.
				return rune(cr.Lo) + ((r-rune(cr.Lo))&^1 | rune(_case&1)), true
			}
			return r + delta, true
		}
		if r < rune(cr.Lo) {
			hi = m
		} else {
			lo = m + 1
		}
	}
	return r, false
}

// To maps the rune to the specified case: [UpperCase], [LowerCase], or [TitleCase].
func To(_case int, r rune) rune {
	r, _ = to(_case, r, CaseRanges)
	return r
}

	_ = myString([]myByte{'\xf0', '\x9f', '\x8c', '\x8d'}) // "🌍

	// 3
	_ = string([]rune{0x767d, 0x9d6c, 0x7fd4}) // "\u767d\u9d6c\u7fd4" == "白鵬翔"
	_ = string([]rune{})                       // ""
	_ = string([]rune(nil))                    // ""

	type runes []rune
	_ = string(runes{0x767d, 0x9d6c, 0x7fd4}) // "\u767d\u9d6c\u7fd4" == "白鵬翔"

	type myRune rune
	_ = string([]myRune{0x266b, 0x266c}) // "\u266b\u266c" == "♫♬"

		}
		t.historyIndex++
		runes := []rune(entry)
		t.setLine(runes, len(runes))
	case keyDown:
		switch t.historyIndex {
		case -1:
			return
		case 0:
			runes := []rune(t.historyPending)
			t.setLine(runes, len(runes))
			t.historyIndex--
		default:
			entry, ok := t.history.NthPreviousEntry(t.historyIndex - 1)
			if ok {
				t.historyIndex--
				runes := []rune(entry)

Jonh Wendell <******@****.***> 1715709579 -0400

	buf := []byte("Hello, 世界")
	fmt.Println("bytes =", len(buf))
	fmt.Println("runes =", utf8.RuneCount(buf))
	// Output:
	// bytes = 13
	// runes = 9
}

func ExampleRuneCountInString() {
	str := "Hello, 世界"
	fmt.Println("bytes =", len(str))
	fmt.Println("runes =", utf8.RuneCountInString(str))
	// Output:
	// bytes = 13
	// runes = 9
}

func ExampleRuneLen() {
	fmt.Println(utf8.RuneLen('a'))