This should complete the changes for the MEDLEYDISPLAYFONTFORMAT.
The building a composite font from BDF files implemented.
Resolves#2313Resolves#2365
This should make #2364 possible.
(I created a size 20 Noto Sans _composite_ font from the same Google
fonts as used by @hjellinek's HTMLSTREAM.)
**NOTE:** This uses the function `IL:CLSMARTEN` which is from the file `CLSMARTARGS`.
The file `CLSMARTARGS` isn't loaded until almost immediately **after** `XCL-EXTRAS`.
There are no uses of `DEFINE-RECORD` in making the `lisp.sysout` loadup, so this _ought_ to be safe, but this must be verified!
Checking for charset *known* to be EQ to the SLUG charset, didn't verify that the font *had* a SLUG charset, so was comparing to NIL, which excluded *all* unloaded charsets.
* Upgrade Sketch to new font interfaces
* Tedit changes so that TEDIT.GETSYNTAX conforms to documentation
* Remove RUBOUT interrupt
* TEDIT-FNKEYS: uses keywords for action names
* LLKEY: Change keybindings for DELETE and LOOKS
* SEDIT-COMMANDS: Shift-DELELETE is wordelete.backwards
* Sketch implements arrow keys
I'm not sure what I did wrong with PR #2396 but it didn't revert
lispusers/BACKGROUND-YIELD(.LCOM).
I did what I thought was the same process, but it seems to have picked
up the right files this time.
Removed WRITE-BDF-TO-DISPLAYFONT-FILE (i.e., no STRIKE format files).
No multiple-values returned. Instead, use LIST when appropriate.
BDF-TO-CHARSETINFO is now IDEMPOTENT w.r.t. the GLYPHS.
Move resolution and defaulting of FAMILY, FACE, SIZE, ROTATION, DEVICE from WRITE-BDF-TO-MEDLEYDISPLAYFONT-FILE to BDF-TO-FONTDESCRIPTOR.
Keep the MCCS chars present BITMAP in the BDF-FONT structure, instead of needing to schlepping it around separately.
Abstracted testing/setting the MCCS chars present bits to CHAR-PRESENT-BIT (mimicking BITMAPBIT).
Added COUNT-MCHARS to know how many MCCS chars are marked in the BITMAP as present.
READ-BDF now handles when UTOMCODE? returns multiple mappings, and creates the appropriate duplicate GLYPHS with different MCCS char codes.
READ-GLYPH doesn't create an empty BITMAP for spacing glyphs.
Use font code changes:
Set (CHARSETINFO CHARSETNO).
Set (FONTDESCRIPTOR FONTSLUGWIDTH).
* loadup scripts: set MEDLEY-INIT-VARS to NOBIND before loading MEDLEYDIR
so that INITVARS in MEDLEYDIR replaces any previous settings in the loadup-sysout
* FONT: add cache for FONTSAVAILABLE, add FLUSHFONTCACHE. See FONTCODECHANGES.tedit
* Make FONTEXISTS and FONTSAVAILABLE consistent
