This commit adds the characters used by vim's popup window feature to
draw window borders. Namely:
- U+2550 BOX DRAWINGS DOUBLE HORIZONTAL
- U+2551 BOX DRAWINGS DOUBLE VERTICAL
- U+2554 BOX DRAWINGS DOUBLE DOWN AND RIGHT
- U+2557 BOX DRAWINGS DOUBLE DOWN AND LEFT
- U+255A BOX DRAWINGS DOUBLE UP AND RIGHT
- U+255D BOX DRAWINGS DOUBLE UP AND LEFT
Type has been replaced with a bit mask size whose value corresponds
to the number of u8 ranges of 256 characters per bit. Given 0x110000
possible glyphs in Unicode 13.0, its maximum size is currently 544
and can be expanded if needed.
Adds the 0xFFFD replacement character to Csilla/KaticaRegular fonts
and fixes dozens of alignment errors in the Latin character sets.
When building userland with UBSAN enabled (#7434), we were getting
spammed to death by unaligned access errors.
Fix these by adding 2 bytes of padding to the FontFileHeader struct,
and adjusting all our font files to match the new format. :^)
This fixed-width font had some garbage per glyph width values, which
while previously was ok, they now had to be correctly set to indicate
glyph presence.
