Crescendo-Decrescendo

[Fairchild]

Been investigating instructions for specifying crescendos and decrescendos
in version 2.4.3.  For several things, either: a) I don't understand, b) the
documentation needs enhancement, and/or c) implementation should be changed.
My test bed is attached.

1)  The User Guide, Section 5.7.13 Dynamics gives a misleading example:
        \setTextCresc
        c \< d e f\!
        \setHairpinCresc
        e\> d c b\!
The \setHairpinCresc is not necessary because the \setTextCresc is only good
once.  Entering \setHairpinCresc does cancel \setTextCresc if entered before
the once is encountered.

2)  \setTextCresc has no effect for a decrescendo. Use both
        \set decrescendoText = "Decrescendo "
        \set decrescendoSpanner = #'dashed-line
And these are only good once.

3)  To change crescendo use both
        \set crescendoText = "Crescendo "
        \set crescendoSpanner = #'dashed-line
Do not use \setTextCresc, it overrides.

4)  Internals document allows line, dashed-line, dotted-line, and hairpin.
hairpin overrides text
line gives dashed-line

5)  No way found to change default italic font, within \markup or with
\override.

6)  \markup is not necessary.  Just use "text".

                          - Bruce

Crescendo.ly
Description: Text Data

Crescendo.pdf
Description: Adobe PDF document