Commits (in reverse chronological order): (issue 38530043)

[janek . lilypond]

Reviewers: wl_gnu.org, hanwenn, Bertrand Bordage,

Message:
Hi,

I decided that it's a good time to clean the Metafont code a bit.  Apart
from what i've done, it'd be nice to do one more thing: move files to
subfolders.

We have several "master files" (feta-flags-generic,
feta-alphabet-generic, feta-braces-generic, feta-noteheads-generic,
feta-other-generic, parmesan-noteheads-generic and
parmesan-other-generic).  All other files are just included into these.
I think that it would be good to have a subdir for each of these fonts -
it would make things *much* clearer.

However, this requires changes in the makefile and it seems that i
cannot handle them (i have no experience with make whatsoever, and no
time to learn it now :/).  Maybe someone'd like to help?  I suppose that
for someone familiar with make it'd be 20-30 minutes of work.

You can see the changes separated into commits on
dev/janek/metafont-cleanup

thanks!
Janek

Description:
Commits (in reverse chronological order):

font: abstract stuff away, unify, format

* move common elements to separate input files,
* move brace-drawing procedure to separate file,
* rename feta-alphabet to feta-alphabet-generic
  to conform to the convention,
* rename feta-generic to feta-other-generic
  (because this file is not for the whole font,
  but just some glyphs that aren't in their own
  subfonts); similarly parmesan-generic,
* remove feta-test-generic.mf and other testing
  files that were just polluting the code,
* put testing code in one place,
* remove spurious filename comments,
* unify formatting and indentation.


font: clean up staffline-display in testing mode

Previous testing code was a mix of hideous copy&paste with
non-obvious passing glyph outlines around, which attempted
to produce additional glyphs in testing mode, so that there
would be both on-staffline and on-staffspace variations.

That code was completely unreadable and unmaintainable.

Instead i've introduced a global variable that determines
how the stafflines will be printed relative to the glyphs.
To see alternative configuration, just change that value.


font: rename draw_staff to draw_staff_if_debugging

Previous name was confusing: the stafflines are actually
not drawn unless 'test' is set to non-zero value.


feta accidentals: split into several files

Please review this at https://codereview.appspot.com/38530043/

Affected files (+1473, -2501 lines):
  A mf/common-modules-and-initialization.mf
  A mf/debugging-settings.mf
  A mf/declare-autometric-parameters.mf
  M mf/feta-accidentals.mf
  A mf/feta-accidentals/arrow.mf
  A mf/feta-accidentals/flats.mf
  A mf/feta-accidentals/naturals.mf
  A mf/feta-accidentals/parenthesis.mf
  A mf/feta-accidentals/sharps.mf
  A mf/feta-alphabet-generic.mf
  D mf/feta-alphabet.mf
  M mf/feta-alphabet11.mf
  M mf/feta-alphabet13.mf
  M mf/feta-alphabet14.mf
  M mf/feta-alphabet16.mf
  M mf/feta-alphabet18.mf
  M mf/feta-alphabet20.mf
  M mf/feta-alphabet23.mf
  M mf/feta-alphabet26.mf
  M mf/feta-braces-a.mf
  M mf/feta-braces-b.mf
  M mf/feta-braces-c.mf
  M mf/feta-braces-d.mf
  M mf/feta-braces-e.mf
  M mf/feta-braces-f.mf
  M mf/feta-braces-g.mf
  A mf/feta-braces-generic.mf
  M mf/feta-braces-h.mf
  M mf/feta-braces-i.mf
  M mf/feta-braces.mf
  M mf/feta-clefs.mf
  M mf/feta-flags-generic.mf
  M mf/feta-flags11.mf
  M mf/feta-flags13.mf
  M mf/feta-flags14.mf
  M mf/feta-flags16.mf
  M mf/feta-flags18.mf
  M mf/feta-flags20.mf
  M mf/feta-flags23.mf
  M mf/feta-flags26.mf
  D mf/feta-generic.mf
  M mf/feta-macros.mf
  M mf/feta-noteheads-generic.mf
  M mf/feta-noteheads.mf
  M mf/feta-noteheads11.mf
  M mf/feta-noteheads13.mf
  M mf/feta-noteheads14.mf
  M mf/feta-noteheads16.mf
  M mf/feta-noteheads18.mf
  M mf/feta-noteheads20.mf
  M mf/feta-noteheads23.mf
  M mf/feta-noteheads26.mf
  A mf/feta-other-generic.mf
  M mf/feta-rests.mf
  M mf/feta-scripts.mf
  D mf/feta-test-generic.mf
  D mf/feta-test11.mf
  D mf/feta-test13.mf
  D mf/feta-test16.mf
  D mf/feta-test20.mf
  D mf/feta-test23.mf
  D mf/feta-test26.mf
  M mf/feta-timesignatures.mf
  M mf/feta11.mf
  M mf/feta13.mf
  M mf/feta14.mf
  M mf/feta16.mf
  M mf/feta18.mf
  M mf/feta20.mf
  M mf/feta23.mf
  M mf/feta26.mf
  M mf/parmesan-clefs.mf
  D mf/parmesan-generic.mf
  M mf/parmesan-noteheads-generic.mf
  M mf/parmesan-noteheads11.mf
  M mf/parmesan-noteheads13.mf
  M mf/parmesan-noteheads14.mf
  M mf/parmesan-noteheads16.mf
  M mf/parmesan-noteheads18.mf
  M mf/parmesan-noteheads20.mf
  M mf/parmesan-noteheads23.mf
  M mf/parmesan-noteheads26.mf
  A mf/parmesan-other-generic.mf
  M mf/parmesan11.mf
  M mf/parmesan13.mf
  M mf/parmesan14.mf
  M mf/parmesan16.mf
  M mf/parmesan18.mf
  M mf/parmesan20.mf
  M mf/parmesan23.mf
  M mf/parmesan26.mf