Function capturedString

stringlib.go:190–201

(L *LState, m *pm.MatchData, str string, idx int)

}

func capturedString(L *LState, m *pm.MatchData, str string, idx int) string {
	checkCaptureIndex(L, m, idx)
	if idx >= m.CaptureLength() && idx == 2 {
		idx = 0
	}
	if m.IsPosCapture(idx) {
		return fmt.Sprint(m.Capture(idx))
	} else {
		return str[m.Capture(idx):m.Capture(idx+1)]
	}

}

func strGsubDoReplace(str string, info []replaceInfo) string {
	offset := 0