lyrics alignment in melismas

[Wilbert Berendsen]

Hi,

when two eigth notes are just a \melisma, the lyric syllabe is centered below 
the first note. But when the two notes are connected with a slur, the syllabe 
is left-aligned with the first note, and continues below the second note.

e.g.:  g'8 \melisma a' \melismaEnd
gives a syllabe centered below the first note
while: g'8( a')
results in a syllabe left-aligned with the first note.

Is there a way to have the syllabe left-aligned without the need to add slurs 
(because they are autobeamed together anyway)?

TIA for any help,
Wilbert Berendsen

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