Are engravers concerned by GLISS?

[Jean-Charles Malahieude]

Hi,

We have got a remark on the French list about a "bug" in the documentation:

The second sentence of the first paragraph of NR-5.1.4 (Modifying 
context plug-ins):
... the Voice context contains a Note_head_engraver and ...

According to the list of engravers and performers, it is called 
Note_heads_engraver. Here is the result of a git-grep:

Documentation/de/notation/changing-defaults.itely
 572 @code{Note_head_engraver}, der die Notenköpfe erstellt, und ein

Documentation/es/notation/changing-defaults.itely
 552 @code{Note_head_engraver} que crea las cabezas de nota y el contexto

Documentation/fr/essay/engraving.itely
1299 le module @code{Clef_engraver} fournit au @code{Note_head_engraver}

Documentation/fr/notation/changing-defaults.itely
 210 @code{Note_head_engraver}, chargé des têtes de notes et, dans le

Documentation/misc/CHANGES-1.1
1858         - removed Note_head_engraver

Documentation/notation/changing-defaults.itely
 571 @code{Note_head_engraver} and the @code{Staff} context contains a

lily/rest-engraver.cc
  46   Should merge with Note_head_engraver

As a matter of fact, amongst the 126 engravers and performers, only 5 
use a plural form:
Completion_heads_engraver, Dots_engraver (despite its fellow 
Dot_column_engraver), Drum_notes_engraver (despite its fellow 
Drum_note_performer), Note_heads_engraver and Tab_note_heads_engraver.

I'll take care of adding the missing "s" to the docs, but I think the 
naming might be worth some consistency with the 121 other.

my 0.1 nano

Jean-Charles