Question regarding the defaults of stem darkening

[Ishi Tatsuyuki]

   According to documentation and some other blog entries of FreeType,  it
   seems that stem darkening is enabled by default for CFF fonts.

   [1]https://www.freetype.org/freetype2/docs/reference/ft2-properties.htm
   l#no-stem-darkening


   However, when looking at the source, it seems that it’s disabled
   unconditionally:

   [2]https://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/src/cf
   f/cffobjs.c#n1183

   Running git blame shows that it’s disabled in 75722f8, a commit from 5
   years ago.


   Is my understanding correct that stem darkening isn’t actually enabled
   by default even for CFF? (Although, that would be a bit strange since
   OpenType fonts does look better than TrueType font on my computer.)

References

   1. 
https://www.freetype.org/freetype2/docs/reference/ft2-properties.html#no-stem-darkening
   2. 
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/src/cff/cffobjs.c#n1183