Humdiff fitler/tool for data entry and critical editions

[Craig]

Hello **HUGers,

I created a new program called "humdiff" that compares different versions of the same music and then marks/highlights notes that are different.  It is available as a filter in VHV:

     https://doc.verovio.humdrum.org/filter/humdiff

And can be used as a command-line tool from humlib:

    http://humlib.humdrum.org

To use on the command-line, download and install humlib tools:

     git clone https://github.com/craigsapp/humlib

     cd humlib

     make

     sudo make install

(humlib will eventually be merged with Humdrum Extras)

The tool/filter is useful for looking for differences when entering music with the double data-entry method or for preparation of critical editions.  Here is a short example from the documentation page, showing differences between two first editions of Chopin's mazurka in B minor, op. 30, no. 2:

The Breitkopf & Härtel edition, with differences compared to the Schlesinger edition highlighted in red:

And here is the Schlesinger edition, with notes differing from the B&H edition highlighted in green:

-=+Craig