All display fontfiles are now in the single fonts/displayfonts/ directory. The subdirectories adobe, big, other, altofonts have been deleted, and are no longer on DISPLAYFONTDIRECTORIES. The few additional displayfonts from the envos repo are included. This is the result of: Removing all byte-identical files, leaving a representative of each such equivalence class in displayfonts/ Removing all files in displayfonts that are renamed byte-identical copies of other files in displayfonts/ (e.g. helvetica1-MRR-c0.displayfont is a fake-renamed copy of helvetica4-MRR-c0.displayfont). These are to be constructed on the fly by the font substitution mechanism. Roughly comparing the bitmaps of non-identical files with the same font family/size/face/charset in the different subdirectories, and making displayfonts/ have the one that looks best (e.g. most glyphs, unless garbage), giving priority to ones that are already in displayfonts/. Moving the remaining odd-ball files from the subdirectories to displayfonts/ (e.g. gates, music). Copying from Envos the 30 or so files that are not byte-identical copies of files already in displayfonts/.
Fonts
These are a not-very-well curated directories of fonts.
"adobe" -- display versions of Postscript's fonts palatino 8 9 10 12 14 18 "altofonts" -- random remnants of fonts used with Alto "big" -- supposedly bigger fonts but turned out not (see #482) "displayfonts" -- separated into directories by charset "ipfonts" -- fonts (or font width information for Xeorx Interpress file format. "other" -- random fonts associated with lispusers packages and not available elsewhere. "postscriptfonts" -- fonts for postscript "press" -- fonts for the older-than-interpress "press" format.
"xeroxprivate" -- ?? Seems like junk