Treating a tie as a slur

[Johan Vromans]

Hi,

Often when processing music imported from Sibelius I have the problem
that Sibelius doesn't seem to care whether a tie connects notes of the
same pitch. As a consequence, some Sibelius users have become lazy and
always use a tie even when the pitches differ.

LiliPond emits an error message when it encounters a tie between notes
of different pitch. This is correct. In fact, I asked for it ;) [1].

However, occasionally it would be handy if I could kindly ask LiliPond
to treat the ties as slurs if necessary. Yes, I know this is wrong, but
manually changing hundreds of ties into slurs is not fun.

An XSLT script to change this at the MusicXML level would be
preferrable.

-- Johan

[1] http://osdir.com/ml/lilypond-user-gnu/2010-11/msg00198.html