* A revision to the font, Unicode, Tedit, and other modules to implement the MCCS character coding as the standard for internal text strings. MCCS is a variant of XCCS with arrows switched with circumflex/underscore and $ switched with currency, and allows for additional code assignments over time. :MCCS replaces :XCCS as the default external format, especially for source files. The file XCCS is removed in favor of the file MCCS, which includes the XCCS external format for backward compatibility.
* This includes a single Medley-font formatted font file for each of the family/size/face display fonts. The glyph assignments correspond to the MCCS character encoding (except for fonts with idiosyncratic encodings--Hippo, Symbol). All charsets from legacy font files are included in each file, and the character sets and glyphs in each file have also been extended by offline coercion from related families (e.g. Glyphs not in legacy Terminal are taken from legacy Modern). There should be fewer black boxes, and character-display shouldn't change when you switch fonts.
* The Unicode mapping tables have been redefined to set up correspondences between Unicode and MCCS, not XCCS. Separate XCCS to/from MCCS mapping functions are provided in the file MCCS; they are no longer included in INTERPRESS.
* TEDIT converts characters in legacy fonts to their new MCCS codes as it reads formatted files, marks the file as MCCS compatible and preserves the new codes on writing.
* Default keyboard assignments produce the MCCS uparrow and leftarrow for shift-6 and shift-hyphen, use Function-6 for circumflex and Function-10 for underscore.
See documentation in FONTCODECHANGES.TEDIT MCCS.TEDIT MEDLEYFONTFORMAT.TEDIT in docs/internal, and library/UNICODE.TEDIT.
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/.
* Added IBM-EGA fixed pitch font files
* move IBM-EGA fonts to file names that will be recognized
Co-authored-by: Matt Heffron <heffron@alumni.caltech.edu>
it took a long time to figure out how to restore old versions, using the './scripts/restore-versions file'. Now that it's there and tested it should be ok to remove them from new 'git clone' of medley
this will give us a stable point on which we can make changes in coordination via git.
NO MORE USING A SHARED DROPBOX
Last major commit wihout a PR against a Medley issue.
