Supported clefs in LilyPond

gistfile1.ly

\version "2.19.20"

\paper {
  indent = 0\cm
  ragged-right = ##t
}

{
  \clef G
  c'1 ^\markup "G"
  |
  \break

  \clef "G2"
  c' ^\markup "G2"
  |
  \break

  \clef treble
  c' ^\markup "treble"
  |
  \break

  \clef violin
  c' ^\markup "violin"
  |
  \break

  \clef french
  c' ^\markup "french"
  |
  \break

  \clef GG
  c' ^\markup "GG"
  |
  \break

  \clef tenorG
  c' ^\markup "tenorG"
  |
  \break

  \clef soprano
  c' ^\markup "soprano"
  |
  \break

  \clef mezzosoprano
  c' ^\markup "mezzosoprano"
  |
  \break

  \clef C
  c' ^\markup "C"
  |
  \break

  \clef alto
  c' ^\markup "alto"
  |
  \break

  \clef tenor
  c' ^\markup "tenor"
  |
  \break

  \clef baritone
  c' ^\markup "baritone"
  |
  \break

  \clef varC
  c' ^\markup "varC"
  |
  \break

  \clef altovarC
  c' ^\markup "altovarC"
  |
  \break

  \clef tenorvarC
  c' ^\markup "tenorvarC"
  |
  \break

  \clef baritonevarC
  c' ^\markup "baritonevarC"
  |
  \break

  \clef varbaritone
  c' ^\markup "varbaritone"
  |
  \break

  \clef baritonevarF
  c' ^\markup "baritonevarF"
  |
  \break

  \clef F
  c' ^\markup "F"
  |
  \break

  \clef bass
  c' ^\markup "bass"
  |
  \break

  \clef subbass
  c' ^\markup "subbass"
  |
  \break

  \clef percussion
  c' ^\markup "percussion"
  |
  \break

  \clef "treble_8"
  c' ^\markup "treble_8"
  |
  \break

  \clef "treble_15"
  c' ^\markup "treble_15"
  |
  \break

  \clef "treble^8"
  c' ^\markup "treble^8"
  |
  \break

  \clef "treble^15"
  c' ^\markup "treble_^15"
  |
  \break

  \clef "bass_8"
  c' ^\markup "bass_8"
  |
  \break

  \clef "bass_15"
  c' ^\markup "bass_15"
  |
  \break

  \clef "bass^8"
  c' ^\markup "bass^8"
  |
  \break

  \clef "bass^15"
  c' ^\markup "bass_^15"
  |
  \break

}

This is to be used to test MusicXML export with regard to clefs