https://gitlab.synchro.net/main/sbbs/-/commit/54a82f5a91e9f04a59b1df62
Modified Files:
src/conio/cterm.adoc cterm.c cterm.txt src/syncterm/CHANGES
Log Message:
Add support for DECSCUSR - Set Cursor Style

We can now control if the cursor blinks.

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https://gitlab.synchro.net/main/sbbs/-/commit/db6107bde7cc1855f89844ff
Modified Files:
src/conio/cterm.adoc cterm.c
Log Message:
Implement DECRQM (Request Mode) for private, ANSI, and CTerm modes

CSI ? Ps $ p queries DEC private modes (DECOM, DECAWM, DECTCEM,
video flags, DECBKM, DECLRMM, sixel scroll, mouse, bracket paste).
CSI = Ps $ p queries CTerm extension modes (LCF, forced LCF, doorway).
CSI Ps $ p queries ANSI modes (none implemented, always returns 0).
All unrecognized prefixes/modes return Pm=0 (not recognized).
Forced LCF reports Pm=3 (permanently set).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/d61223fea0ab02b105315d75
Modified Files:
src/conio/cterm.adoc cterm.c src/syncterm/term.c termtest.c
Log Message:
Expand test suite to 145 tests, fix retbuf/callback response path

Tests (99 -> 145):
Add 46 new tests covering ED modes 1/2, EL modes 1/2, SL, SR, CVT,
TSR, CTDA, BCDSR, XTSRGA, DECCKSR, CTSMRR (Ps=1-6), DECRQSS (t,
$|, *|), CTSMS/CTRMS, SGR (dim, blink, noblink, normal intensity,
default fg/bg, bright bg), CT24BC, OSC 10/11 queries, OSC 8
hyperlink readback, DECRPM for modes 31-35/67/80 + mouse modes,
SM/RM for FETM/TTM, APC JXL query, NUL in doorway mode with
doorway encoding verification, and response ordering regression.

cterm.c Ä retbuf audit:
Convert all response sites from retbuf-gated strcat() to
cterm_respond()/cterm_respond_printf(). Fixes ANSI mode DECRQM
(CSI Ps $ p), CTSMRR Ps=4/5, and other queries that failed when
response_cb was set and retbuf was NULL.

cterm.c Ä escaped ST for OSC 8 in STS:
OSC 8 terminators inside SOS-framed STS content use ESC : \
instead of ESC \ to avoid premature SOS closure. ESC : is an
unassigned Fp private-use escape (ECMA-35) that parsers silently
drop.

term.c Ä eliminate dual response path:
APC handler and WRITE_OUTBUF now use conn_send/response_cb
exclusively instead of mixing retbuf writes with callback-based
responses, which caused response ordering bugs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/bcca49315f5257a349289df7
Modified Files:
src/conio/cterm.adoc cterm.c cterm.h src/syncterm/termtest.c
Log Message:
Implement vertical line tabulation, scroll verification, ANSI mode reporting

Vertical tabs (ECMA-48):
Add VTS (ESC J) to set line tabulation stops at fixed row numbers.
Fix CVT (CSI Pn Y) to advance to the Pn-th next line tab stop
(preserving column) instead of incorrectly acting as horizontal CHT.
When no line tab stop exists, CVT scrolls up and moves to the last row.
Extend TBC: Ps=1 clears line tab at current row, Ps=4 clears all
line tabs, Ps=5 now correctly clears both character and line tabs.
Line tab stops are at fixed row numbers, unaffected by scrolling,
with no defaults set. VT (0x0B) remains a displayable CP437 glyph.

Scroll content verification (tests):
Add scroll_witness_setup/check_up/check_down helpers for verifying
that screen content actually moves during scroll operations.
Strengthen SU, SD, RI_scroll, LF_scroll, DECSTBM_scroll, and CVT
tests to verify content shifted, not just cursor position.
Add SU_margins, SD_margins, SL_margins, SR_margins tests verifying
content inside margins scrolls while content outside stays put.

ANSI mode DECRQM (CSI Ps $ p):
Report all 20 ECMA-48 standard modes: 1-13/15/17/18 permanently
reset (Pm=4), 14/16 changeable (Pm=1/2), 21 GRCM and 22 ZDM
permanently set (Pm=3).

Test count: 145 -> 149, all passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/80b5ad1b89408202579c4fc8
Modified Files:
src/conio/cterm.adoc cterm.c src/syncterm/termtest.c
Log Message:
Implement DEC rectangular area operations and column editing

New sequences:
DECERA (CSI Pt;Pl;Pb;Pr $ z) Ä erase rectangular area
DECFRA (CSI Pch;Pt;Pl;Pb;Pr $ x) Ä fill rectangular area
DECCRA (CSI ...params... $ v) Ä copy rectangular area
DECIC (CSI Pn ' }) Ä insert column(s) within scrolling margins
DECDC (CSI Pn ' ~) Ä delete column(s) within scrolling margins

All operations use current SGR attributes for new/erased cells and
clear hyperlink_id. Coordinates respect DECOM (origin mode) but are
not affected by margins (except DECIC/DECDC which operate within
margins only). Cursor does not move. DECFRA accepts any character
except C0 (0x00-0x1F) and DEL (0x7F).

cterm.adoc:
Document all five new sequences. Fix sort order of entire CSI
section Ä entries now correctly ordered by (final byte, intermediate
byte, private prefix) in ASCII order, fixing 19 pre-existing
ordering errors.

Tests: 149 -> 154 (DECERA, DECFRA, DECCRA, DECIC, DECDC), all passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/079cf7902899f1a94746a5ff
Modified Files:
src/conio/cterm.adoc cterm.c cterm.h src/syncterm/CHANGES termtest.c Log Message:
Implement DECCARA, DECRARA, DECSACE and DECRQSS speed query

Add rectangular attribute operations: DECCARA (CSI $ r) sets SGR
attributes, DECRARA (CSI $ t) toggles bold/blink/negative, and
DECSACE (CSI * x) controls rectangle vs stream mode. Extract
apply_sgr() from SGR handler for reuse by DECCARA. Add DECRQSS
queries for DECSACE (*x) and DECSCS speed (*r). 11 new tests
(165 total), cterm.adoc entries, fix unused variable warning.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/37088cdb5b85c52e394d8170
Modified Files:
src/conio/cterm.adoc cterm_test.c
Log Message:
Add ATASCII documentation and 19 unit tests (57 total)

Document the ATASCII emulation mode in cterm.adoc: two screen modes
(40x24 standard, 80x25 XEP80), control codes, cursor wrapping
behavior, ESC inverse mode, tab stops, and character encoding.
Normal mode stores raw ATASCII bytes; ESC (inverse) mode applies
screen code translation.

19 ATASCII tests: printable chars, return, clear screen, cursor
movement with wrapping (up/down/left/right), destructive backspace,
ESC inverse mode and auto-reset, delete/insert line, delete/insert
char, bell, return with scroll, tab, tab set/clear, screen code
mapping in normal vs ESC mode.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/0fa02bfc9f73da604517804a
Modified Files:
src/conio/cterm.adoc cterm_test.c
Log Message:
Add PETSCII documentation and 28 unit tests (85 total)

Document the PETSCII emulation in cterm.adoc: three screen modes
(C64 40x25, C128 40x25, C128 80x25), control codes, color mapping
tables for both C64/C128-40 (VIC-II palette) and C128-80 (CGA
palette), reverse video, cursor movement, font switching, and a
table of known C64/C128 hardware differences not yet implemented.

28 PETSCII tests across all three screen modes: printable chars,
return (with reverse disable), shift+return (preserves reverse),
clear screen, home, cursor movement (up/down/left/right with
wrapping and clamping), delete, insert, reverse video, color
setting (per-mode palette verification), all 16 C64 colors, bell,
ignored controls, return with scroll, C64 lock/unlock case bytes,
C128 disputed control bytes, and LF behavior per mode.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/5f805082cabbca72aa9ff0b3
Modified Files:
src/conio/cterm.adoc cterm_test.c
Log Message:
Add Prestel and BEEB unit tests (122 total), fix BEEB ESC docs

37 new tests: 26 Prestel (C0 controls, cursor movement with wrapping,
clear screen, home, cursor on/off, ENQ, NUL, ignored controls, serial attributes via ESC and raw C1 Ä alpha/mosaic color, flash/steady,
conceal, hold/release, double height, background, separated/contiguous,
row attribute reset) and 11 BEEB (printable chars, character
translation #/_/`, BEL, APD/APU scroll behavior, DEL, APS direct
addressing, VDU 23 cursor control, APH, CS, C1 serial attributes).

Fix cterm.adoc: BEEB mode uses raw C1 bytes (0x80-0x9F) for serial
attributes, not ESC (ESC is for VDU sequences only in BEEB mode).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/9a318870ea9352444b35be18
Modified Files:
src/conio/cterm.adoc cterm.c cterm_test.c
Log Message:
Re-process (not discard) invalid bytes in command strings

When a byte outside the allowed command string range (ECMA-48 5.6)
appeared inside a DCS, OSC, APC, or PM string, both the string and
the invalid byte were silently discarded. The discard behavior was a placeholder from before string processing was implemented (c99f9885).

Now the malformed string is discarded but the invalid byte is
re-processed as normal input (e.g., BEL beeps, FF clears screen).

Added 4 tests: OSC+BEL, DCS+BEL, APC+SI, SOS+SOS.
Documented the behavior in cterm.adoc.
Added comment documenting the SOS frame invariant in STS readback.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/9019e4bcbaf590e7509316e1
Modified Files:
src/conio/cterm.adoc cterm.c cterm.h cterm_dec.c cterm_dec.h cterm_internal.h cterm_test.c src/syncterm/CHANGES ripper.c term.c xtrn/termtest/termtest.js
Log Message:
cterm: add DECSSDT + DECSASD status-line control (VT320)

The puts the BBS in control of the status bar. A BBS can enable,
disable, or create custom status bars now.

Lets the host hide, keep, or write to the bottom status row via
`CSI Ps $ ~` (DECSSDT: 0=none, 1=indicator, 2=host-writable) and
`CSI Ps $ }` (DECSASD: 0=main, 1=status). Ps=2 spawns a 1-row
sub-cterm; cterm_write routes into it while DECSASD=1 and status-
display sequences dispatched on the sub bubble to the parent. Main
height changes via a new cterm_resize_rows() helper that preserves
content and user DECSTBM. DECRQSS `$~`/`$}` report state. Mouse
events on the indicator row stay local; Ps=0/2 pass through.
14 new cterm_test cases.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/f31a04d4f034cf45c90ca22b
Modified Files:
src/conio/cterm.adoc cterm.c cterm.h cterm_cterm.c src/syncterm/GNUmakefile bbslist.c term.c src/xpdev/xpbeep.c xpbeep.h
Log Message:
Do an APC audio API thing.

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https://gitlab.synchro.net/main/sbbs/-/commit/117de2753026dd61b0b9573f
Modified Files:
src/conio/cterm.adoc cterm.c cterm_cterm.c cterm_dec.c
Log Message:
Reverse DECSDM meaning

DEC mode 80 is the "Sixel Display Mode" which, when set, *disables*
sixel scrolling, and defaults to reset.

This is the opposite of what the VT-340 manual says, but experiments
on a real VT-340 in 2021 show this behaviour is correct.

Bump revision.

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https://gitlab.synchro.net/main/sbbs/-/commit/ef5b7f98a3008630e262cb30
Modified Files:
src/conio/cterm.adoc cterm.c src/syncterm/audio_apc.c term.c xp_sndfile.c xp_sndfile.h
Log Message:
Add blob APC media commands

Add direct blob variants for PPM, PBM, JPEG XL, and audio APC media paths so callers can send transient payloads without publishing shared cache filenames.

Refactor PPM/PBM parsing to use a bounded memory reader, with file-backed reads mapped through xpmap(), and add libsndfile virtual I/O decoding for A;LoadBlob. Document the new verbs and gate them on CTerm DA revision 1.329.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/de4565e22f47819b84d50cbf
Modified Files:
src/conio/cterm.adoc cterm.c cterm.h cterm_cterm.c cterm_dec.c src/syncterm/Wren.adoc src/syncterm/scripts/syncterm.wren wrentest.wren src/syncterm/term.c term.h termtest.c wren_bind.c wren_bind_conn.c wren_bind_conn.h
Log Message:
Add SGR pixel mouse reporting

Add DECSET 1016 as the SGR pixel-position mouse mode. Treat it as the
SGR extended-coordinate mode plus a pixel-coordinate flag, matching xterm set/reset behavior so 1006 and 1016 report as distinct modes.

Use high-resolution mouse coordinates when the backend supplies them and
fall back to cell coordinates when the conio path only has text mouse positions. Expose the active 1016 state to Wren and bump the CTerm
revision to 1.330 so servers can detect support through DA.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

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https://gitlab.synchro.net/main/sbbs/-/commit/eaf14c525bfa4011b9031b61
Modified Files:
src/conio/cterm.adoc cterm.c src/syncterm/audio_apc.c xp_sndfile.c xp_sndfile.h
Log Message:
Add libsndfile format query

Add a SyncTERM:Q;libsndfileFormat query that asks the loaded
libsndfile runtime whether a normalized major/subtype pair is supported.
This lets BBSes distinguish coarse libsndfile availability from codec
support such as OGG/Opus.

Resolve sf_format_check in the dynamic libsndfile wrapper, assert the libsndfile mask layout used by the protocol, and document the response
shape plus a copied convenience registry of major formats and subtypes.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

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