How to append a git version to an output filename

[Ben Beeson]

Hello all,

I am using git to keep track of edits to scores and am presently using 

\bookOutputName "score-filename" 

 

to write the output filename for the pdf that is generated in the LilyPond "ly" file. I am also using  

"git Version: \gitCommitish " 

in the tagline so the generated pdf has the git version information included in the score that is generated. I am wondering if there is a way to include \gitCommitish in \bookOutputSuffix so that the output filename looks like:

"score-filename-gitversion.pdf".

So far I have not been able to figure out how to do that or find an existing solution in the snippets, forum or elsewhere. If anyone has a solution, please share it.

Thanks in advance,

Ben