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 ( \( )  /__\  / __)(  )  / __)(  _  )( \( )
  )  (  /(__)\( (__  )(__( (__  )(_)(  )  (
 (_)\_)(__)(__)\___)(____)\___)(_____)(_)\_)

The History of Hacking  ·  May 31 – June 2, 2026  ·  Carolina Beach, NC

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  • src/doors/termgfx/term.c term.h

    From Rob Swindell (on Debian Linux)@VERT to Git commit to main/sbbs/master on Sun Jun 28 22:01:38 2026
    https://gitlab.synchro.net/main/sbbs/-/commit/f1ecc065541d98d00490a8ce
    Modified Files:
    src/doors/termgfx/term.c term.h
    Log Message:
    termgfx: correct the DECSDM ?80 rationale in the comments

    The term.h/term.c comments claimed mode 80 "defaults to SET" and that ?80l "pins the sixel to top-left" -- both wrong. SyncTERM/cterm reversed mode 80 in rev 1.328 (2026) to match real VT-340 hardware (it defaults to RESET), and the load-bearing effect of ?80l for us is POSITIONING, not scroll-prevention: under ?80l a non-SyncTERM sixel terminal draws the image at the text cursor (so the door centers it), while SyncTERM's cterm ignores the cursor and anchors top-left. Scroll-prevention is handled separately by keeping the image off the last text row (the bottom-cell reserve). Comments only; no code change.

    Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

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