Warn: Check GDEF mark glyph class doesn't have characters that are not marks.

[vv-monsalve]

@casasin Please revise the listed glyphs to ensure everything is as expected.

⚠️ WARN Check GDEF mark glyph class doesn't have characters that are not marks.

Glyphs in the GDEF mark glyph class become non-spacing and may be repositioned
if they have mark anchors.

Only combining mark glyphs should be in that class. Any non-mark glyph
must not be in that class, in particular spacing glyphs.

Original proposal: fonttools/fontbakery#2877

• ⚠️ WARN

  The following non-mark characters should not be in the GDEF mark glyph class:
  U+0384, U+0385, U+FBB2, U+FBB3, U+FBB4, U+FBB5, U+FBB6, U+FBB9, U+FBC0, U+FBC2, U+FC5E, U+FC5F, U+FC60, U+FC61, U+FC62, U+FC63, U+FE70, U+FE72, U+FE74, U+FE76, U+FE78, U+FE7A, U+FE7C and U+FE7E

  
  [code: non-mark-chars]

[josescaglione]

@vv-monsalve
We can disregard this warning (even though we will try to remove it by explicitly marking these as non-mark)

[josescaglione]

OK, an update after more detailed revision:

1. The glyphs listed above ARE combining marks
2. In the glyphs file they are not explicitly set as comb marks but...
3. they have _anchorname and
4. they are width 0 on export
5. and they seem to be correctly in the GDEF mark section

In short, the font is correct and we do not know why FB is flagging these