Re: convert-ly seems not working

[Mats Bengtsson]

Ledocq-Boccart wrote:
> Hi,
>
> I'm managing converting  a *-midi.ly from 2.7.18  to 2.10.33
> *-midi.ly is stored in "C:\...\Lilypond\usr\bin".
It's not a good idea to use this folder as your working directory!
Please see 
http://lists.gnu.org/archive/html/lilypond-user/2007-01/msg00038.html
for an example of how to use convert-ly.
> No answer found in the forums about the use of convert-ly
Where did you look?
> Environment: is Lilypond 2.10.33 running on win XP.
> Formerly produced files *-midi.pdf,  *-midi.ps and  *-midi.log are 
> erased.
>
> _1. using convert-ly:_
> typing    "C:\...\bin\convert-ly --from=2.7.18 --to=2.10.33 *-midi.ly"
There's no need to specify the full path, see the link above.
> produces (?)   *-midi.ly    which version remains 2.7.18 (reading
> with jedit);
> applying     lilypond.exe   gives:
> *-midi.pdf            with unchanged scores
> *-midi-log            no important error but again recommanding to use 
> convert-ly  ...2.7.18 ... (2.7.38  2.10.33)
>
>
> _2.questions:_
> - Have I missed something?
Don't forget the flag -e if you want the changes to be done on the file. 
This
is shown on the first lines in the section on convert-ly in the manual.
> - I wonder which syntax to be used fot specifying the --from and --to 
> version:
> --help shows 2 possibilities as in             " ... convert-ly 
> --from=2.5.10 --to 2.10.33 foo.ly" example given
The best is to always have a \version statement in the .ly file. Then, 
there's no
need to manually specify the --from and -too.

   /Mats