boxdraw-legacycomputing

Description

The boxdraw patch renders lines, blocks, and braille characters (U+2500 - U+259F, U+28XX) directly instead of relying on font glyphs. This ensures they align correctly regardless of the font, size, or scaling.

This patch extends the same rendering approach to parts of the "Symbols for Legacy Computing" block (U+1FB00 - U+1FB8B):

Sextants - 2x3 grids of filled cells (U+1FB00 - U+1FB3B)
Eighth-column/eighth-row stripes (U+1FB70 - U+1FB7B)
Mixed-axis edge stripes (U+1FB7C - U+1FB81)
Cumulative eighths that fill the gaps left by the U+2500 block's

existing half/full-eighth blocks (U+1FB82 - U+1FB8B)

Wedges, shades, diagonals, and the pictographic symbols later in the Legacy Computing block are not covered by this patch and are left to font fallback.

Example

Sextants from VTE's boxes.txt test page. The left image shows the output without the patch; the right image shows the output with it:

before after

Notes

This patch is based on the boxdraw patch and must be applied after

applying boxdraw.

It reuses boxdraw's existing boxdraw config.h toggle - no separate

configuration option is added.

The download is a git format-patch file. It can be applied with

either git am ... or patch -p1 < ....

Download

st-boxdraw-legacycomputing-0.9.3.diff

Author

Miloš Stojanović - https://github.com/M4444