<encoding>UTF-8</encoding>
            <docencoding>UTF-8</docencoding>
            <charset>UTF-8</charset>
            <additionalOptions>
              <additionalOption>-XDignore.symbol.file</additionalOption>
              <additionalOption>-Xdoclint:-html</additionalOption>
            </additionalOptions>
            <source>8</source>
          </configuration>
          <executions>

            <encoding>UTF-8</encoding>
            <docencoding>UTF-8</docencoding>
            <charset>UTF-8</charset>
            <additionalOptions>
              <additionalOption>-XDignore.symbol.file</additionalOption>
              <additionalOption>-Xdoclint:-html</additionalOption>
            </additionalOptions>
            <source>8</source>
          </configuration>
          <executions>

	for i := 0; i < len(s); {
		r, wid := utf8.DecodeRune(s[i:])
		r = mapping(r)
		if r >= 0 {
			b = utf8.AppendRune(b, r)
		}
		i += wid
	}
	return b
}

// Despite being an exported symbol,
// Repeat is linknamed by widely used packages.
// Notable members of the hall of shame include:
//   - gitee.com/quant1x/num
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//