convert-ly rule for \stringTuning

[Federico Bruni]

I've just happened to update an old score from 2.13.x to latest version 2.17.7

The following custom tuning:

\set TabStaff.stringTunings = #'(2 -3 -5 -8 -13 -20)

has been converted to:

\set TabStaff.stringTunings = #`(,(ly:make-pitch 0 1 NATURAL) ,(ly:make-pitch -1 5 NATURAL) ,(ly:make-pitch -1 4 NATURAL) ,(ly:make-pitch -1 2 NATURAL) ,(ly:make-pitch -2 6 NATURAL) ,(ly:make-pitch -2 2 NATURAL) )

I wonder why convert-ly has not managed to convert to a more user-friendly input, that is:

\set TabStaff.stringTunings = \stringTuning <e, b, e g a d'>

I'm not able to find the commit which introduced \stringTuning...

I found just this old commit:

commit 17f11c2f5ab963bfb07b7652b4860dc4dda5540a

Author: Carl Sorensen <address@hidden>

Date:   Thu Dec 23 08:19:46 2010 -0700

The result of convert-ly was intended..

* python/convertrules.py

      - Add rule to convert \set stringTunings = #'(...) to

        \set stringTunings = #`((ly:make-pitch x y z)...)

        with ly:make-pitch entries automatically calculated.

Any chance to  improve it?