Hairpin-end/dynamic-mark collision at barlines

[Connor Harris]

To whom it may concern:

Ordinarily, hairpins that terminate on notes with dynamic markings are 
shortened or vertically displaced so as not to collide with the dynamics 
(see (1) in the included code sample). When the end of a hairpin coincides 
both with the beginning of a bar and a dynamic mark, however, the width of 
the dynamic mark is ignored, and the hairpin ends on the barline even if 
this causes collisions with the dynamic mark. This happens both for 
decrescendi (2a) and crescendi (2b), and whether or not the hairpin spans 
more than one bar (2c).

Also of note: this problem occurs only at hairpins' ends, not their 
beginnings (3), does not occur when hairpins cross barlines but end at a 
location not a barline (4), is immune to tweaking the to-barline hairpin 
property (5), and also occurs with "built-in" dynamics, not just ones user-
defined with make-dynamic-script (6).

I am assuming, perhaps wrongly, that this is not desired behavior; whether 
or not it is, I would appreciate a workaround.

I tested the included code sample on Windows binary packages, both 2.18.2 
and 2.19.39-1, which gave indistinguishable results.

Best,
Connor Harris

\version "2.19.39"

\paper {
  ragged-right = ##t
}

pocoPMarkup = \markup {\normal-text \italic "un pochissimo" \dynamic "p"}
pocoP = #(make-dynamic-script pocoPMarkup)

\relative g' {g2_\>^\markup "(1)" g2\pocoP \break
  g1\>^\markup "(2a)" g2\pocoP g2 \bar "||"
  g1\<^\markup "(2b)" g2\pocoP g2 \bar "||"
  g1\>^\markup "(2c)" g g2\pocoP g2 \break
  g1\pocoP^\markup "(3)" g2\> g2 \break
  g1\>~^\markup "(4)" g4 g g g\pocoP \break
  \tweak to-barline ##f g1\>^\markup "(5)" g1\pocoP \break
  g1\>^\markup "(6)" g4\ppppp g g g
}