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  • src/xpdev/unicode_defs.h

    From Rob Swindell (on Debian Linux)@VERT to Git commit to main/sbbs/master on Wed Jul 29 23:14:42 2026
    https://gitlab.synchro.net/main/sbbs/-/commit/6dcad3d4fa5c68737b055637
    Modified Files:
    src/xpdev/unicode_defs.h
    Log Message:
    xpdev: correct the medium and dark shade codepoints

    UNICODE_MEDIUM_SHADE was a duplicate of UNICODE_LIGHT_SHADE (0x2591) and UNICODE_DARK_SHADE held medium shade's 0x2592, so cp437_unicode_tbl[]
    mapped CP437 0xB1 and 0xB2 one step too light and never produced U+2593
    at all. The classic shading ramp 0xB0 0xB1 0xB2 0xDB reached a UTF-8
    terminal as U+2591 U+2591 U+2592 U+2588, flattening the gradient in any
    ANSI art that uses it, and reverse look-ups turned U+2592 back into CP437
    0xB2 rather than 0xB1.

    Per the Unicode standard: U+2591 LIGHT SHADE, U+2592 MEDIUM SHADE,
    U+2593 DARK SHADE.

    Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

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