French beaming option + beam + stem length + articulation/slur interactions

[craigsapp]

The new French-style beaming option is confusing layout code for other elements that are not aware of the style. Here is an example:

Without French-style beaming, the placement of the slur ending and staccato on an internal note of a beam are correct:

Some sort of "effective length" for the stem needs to be added for such situations so that placement of the articulations and slurs is not done inside of a beam.

Click to view MEI test data

```xml Craig Stuart Sapp Verovio

Transcoded from Humdrum

Encoded by: Craig Stuart Sapp

Version: 2022/04/20

Beethoven, Ludwig van Piano Sonata no. 1 in F minor     Ludwig van Beethoven 1770–1827

```

[rettinghaus]

This not just a stem but a general beam problem. If you have a closer look, you'll see that in the same situation articulations over beams are closer to the note (while the end of a beam is even a bit further away from the notehead than the stem).

[craigsapp]

Yes, although that seems to be caused by different code? (the beginning and ending notes of French beams have standard placements because the stems go all of the way to the top of the beams unlike the internal stems which stop at the bottom of the beam).