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Changelog

All notable changes to this project will be documented in this file.

[Unreleased]

[1.10.1] - 2026-04-14

Added

  • Stuffit 1.5.1 archives (.sit) now generated as a distribution artifact alongside .dsk and .hqx, containing Flynn and About Flynn. Expand with StuffIt Expander on the Mac.

Fixed

  • Cross-application clipboard broken under System 6 MultiFinder: the app4Evt handler ignored convertClipboardFlag, so Flynn never called LoadScrap/UnloadScrap on suspend/resume. Text copied in other apps was invisible to Flynn's paste and Show Clipboard, and text copied in Flynn never reached other apps.
  • MacBinary headers for Flynn.bin now carry the build's creation/modification date instead of the epoch, so Finder no longer shows deployed copies as "Fri Jan 1 1904".

[1.10.0] - 2026-04-07

Added

  • HIG-appropriate modal dialogs: dBoxProc on System 6, movableDBoxProc on System 7 (draggable title bar)
  • All modal dialogs centered on screen (horizontal center, upper-third vertical)
  • Background window redraw when dragging movable modals on System 7
  • Edit Favorite dialog: redesigned with title bar (noGrowDocProc), split Font/Size popups, Theme/Backspace/Echo settings per favorite
  • Manage Favorites dialog: title bar added for consistency (noGrowDocProc)
  • Status bar shows Backspace (BS/DEL) and Local Echo (Echo On/Off) indicators
  • Theme engine: 9 built-in themes (Light, Dark, Solarized Light/Dark, Tokyo Light/Dark, Green Screen, Classic, Platinum) with 4 optional themes (Dracula, Monokai, Nord, Gruvbox)
  • Per-window settings: theme, terminal type, backspace, and local echo are independent per session
  • Per-bookmark theme/backspace/local echo persistence (saved alongside existing per-bookmark font/terminal type)
  • New sessions inherit active session's theme and input settings (falls back to prefs on first launch)
  • Theme submenu under Options menu on color systems (System 7+), simple Dark Mode On/Off toggle on mono (System 6)
  • docs/THEMES.md: developer guide for creating custom themes
  • Session logging (Cmd+L): continuous output logging to text file with ANSI escape sequence filtering, CR deduplication, and sensitive data warning in log header
  • Print support (Cmd+P): Page Setup and Print via Printing Manager with paginated output, Geneva 9pt header/footer, Monaco 9pt terminal content, and ImageWriter spool printing
  • Telnet NOP keep-alive: sends IAC NOP after 120 seconds idle to prevent NAT/firewall drops
  • Reconnect (Cmd+R): reconnect to same host after disconnect, also available in File menu
  • Reconnect button on disconnect alert: one-click reconnect when remote host closes connection
  • Reset Terminal in Control menu: clears screen and resets parser state without disconnecting
  • Clear Scrollback in Edit menu: frees scrollback buffer for long sessions
  • Find in Scrollback (Cmd+F) with Find Again (Cmd+G): search backward through terminal content
  • Show Clipboard viewer window in Edit menu: TextEdit display with scrollbars, resize support
  • GURL Apple Event handler: System 7 browsers can hand off telnet:// URLs to Flynn
  • Window position saved to preferences and restored on next launch

Fixed

  • Multi-session status bar toggle applied wrong theme: resize loop loaded per-session font but not per-session theme, so all windows were redrawn with the active session's theme (System 7 color only)
  • Grow box (size box) not redrawn on window activate/deactivate: DrawGrowIcon was missing from handle_activate, so cascaded windows whose grow box was never obscured showed a stale/empty grow box after switching (both mono and color)
  • Window port backColor not synced with theme on session switch: PaintBehind filled exposed regions with stale white/black instead of the session's theme background (System 7 color only)
  • Status bar showed global terminal type instead of per-session type: all sessions displayed prefs.terminal_type rather than their own negotiated ttype
  • Out of memory on 3rd session with color themes: SIZE resource calculation did not account for per-session CellColor arrays or the shared GWorld offscreen buffer; color builds now floor at 1024KB preferred partition (System 6 mono builds unaffected)
  • Color selection not highlighting empty cells beyond text: selected runs of plain spaces were skipped in the color rendering path, causing multi-row selections to only highlight characters (System 7 only; mono unaffected)
  • Selection highlighting not following content during scroll: selection coordinates were screen-relative but not adjusted when scroll_offset changed, so the highlight stayed in place while content scrolled underneath (both mono and color)
  • Light theme white-on-white after theme switch: cursor_blink left themed ForeColor (white from Dark) in window port, corrupting CopyBits color mapping; reset port colors before CopyBits and restore after cursor_blink
  • Stale pixels on surviving window after multi-session close: DisposeWindow only updates previously-obscured region; added InvalRect on full portRect in session_destroy_and_fixup
  • Out of memory on repeated theme switching: GWorld free/realloc cycle (~137KB) fragmented heap; added term_ui_repaint_offscreen() that invalidates content without freeing buffers
  • drain_one() always returned 0 (no data): session_process_data zeroed read_len before the return-value check; track had_data separately
  • favorites_add() sentinel bug: bm_theme_id/bm_backspace_bs/bm_local_echo initialized to 0 (wrong value) instead of -1 (use global default) via memset; now captures actual session values
  • Backspace popup in Edit Favorite: ^H and ^? were parsed as Menu Manager metacharacters by AppendMenu, graying out items; fixed with SetMenuItemText
  • Status bar not updating on Backspace/Local Echo toggle from Options menu
  • Color desync: reverted pointer-rotation scroll to memmove (fixes gray/wrong ANSI colors after scroll on System 7)
  • Dark theme white holes: skip color GWorld for non-white-bg themes, draw directly to window (avoids Window Manager BeginUpdate white fill)
  • Disconnect color preservation: snap_color buffer saves/restores CellColor data alongside TermCell content
  • Theme bleed-through on window close: all destroy paths use session_destroy_and_fixup to restore surviving session's theme
  • Per-session theme globals swapped in idle loop, update handler, and activate handler
  • Drawing code uses theme_is_dark() instead of prefs.dark_mode for per-session correctness
  • Cursor blink no longer fires during scrollback view (caused XOR artifact over scrollback content)
  • DNS response parser signed short overflow on crafted RDLEN values
  • OSC parameter accumulation signed short overflow (guard tightened)
  • Window title from OSC 0/2 now strips control characters (bytes < 0x20)
  • Window resize on font change used wrong status bar height calculation
  • Grow box and scrollbar column not redrawn after window resize snap-to-grid
  • Cell width uses CharWidth('M') instead of widMax (fixes spacing with scaled bitmap fonts)
  • Status bar color cache invalidation after GWorld rendering on System 7
  • Zero-width selection no longer renders inverted cell on single click
  • Clicks in disconnected terminal sessions ignored (prevents stale color artifacts)

Changed

  • Scroll rendering reverted to memmove (pointer rotation caused color desync on System 7; mono unaffected)
  • Smoother bulk output: smaller draw batches, shorter jump scroll deadline, reduced drain loop cap
  • Font and Size split into separate submenus (matching Geomys HIG)
  • New fonts: New York (System 6+), Helvetica, Times, Palatino (System 7 only, added at runtime)
  • Size submenu: 9, 10, 12, 14 — any font/size combination now possible
  • Options menu uses Apple HIG action verbs: "Turn Dark Mode On/Off", "Show/Hide Status Bar", "Turn Local Echo On/Off", "Switch Backspace to BS/DEL (^H/^?)"
  • Removed trailing colons from all dialog labels (Connect, Favorites, DNS Server, Finger, Find)
  • Edit Favorite: Host and Port on same row, all settings show resolved values (no ambiguous "Default" option)
  • Favorites popup menus list current value first for Backspace and Echo
  • DNS Server moved from File menu to Options menu
  • Status bar always white with black text regardless of dark mode (chrome, not content)
  • File menu reorganized: New, Close, Reconnect, Finger, Save, Quit
  • Finger shortcut changed from Cmd+F to Cmd+I (Cmd+F now Find, matching Geomys)
  • Screen row pointer table eliminates row×132 multiply on all screen accesses (+200 bytes/session)
  • Color row pointer table eliminates multiply for color array access on System 7
  • Glyph cache uses direct lookup table instead of linear search (O(1) vs O(49))
  • Charset-is-standard cached flag reduces per-character struct reads in fast path
  • Pre-computed cell height fractions eliminate divides in glyph rendering
  • adjust_cursor() only called on mouse movement, not every idle tick
  • Color cube RGB decomposition uses subtraction loops instead of division (no hardware divide on 68000)
  • DNS resolver stack buffers made static (saves ~1.5KB stack)
  • Deduplicated show_ttype_popup between connect and bookmark edit dialogs
  • Removed dead code: TelnetState.sb_opt, favorites_init_menu(), redundant telnet_init zeroing
  • Build flag: -fomit-frame-pointer frees A6 register on 68000
  • Inline TERM_DIRTY_ROW macro saves JSR/RTS overhead per dirty-row mark
  • Gate cached_fg_idx invalidation on actual TextFace change (saves ~24us/trap on color systems)
  • Factor drain_one()/check_keepalive() helpers in event loop (~55 lines deduped)
  • Deduplicate term_put_cp437 cell-write logic via term_put_char (~25 lines removed)
  • Convert snap_screen/snap_color from inline array/Ptr to Handle, sized to active dimensions (3.8KB at 80x24 vs 13.2KB at 132x50), freed immediately after disconnect restore

[1.9.8] - 2026-03-31

Added

  • iBeam cursor when mouse is over terminal text area (arrow elsewhere)

Fixed

  • Click-and-drag text selection not highlighting or selecting wrong text (shadow buffer optimization was skipping rows where only selection changed)

[1.9.7] - 2026-03-21

Added

  • Zoom box in window title bar per Apple HIG (zoomDocProc)
    • Click to toggle between user-sized window and standard 80x24 grid
    • Sets standard state to default terminal dimensions
    • Sends NAWS update to server on zoom while connected

Changed

  • Scrollbar width from 16 to 15 pixels, matching Geomys UI dimensions
  • Build system: renamed macplus preset to lite, full is now default
  • README: added direct download links, auto-updated in release.sh

Fixed

  • BUILD.md examples updated to reflect full as default preset
  • BUILD.md: added apt-get install line for Debian/Ubuntu prerequisites

[1.9.6] - 2026-03-16

Added

  • Finger protocol client (RFC 1288) — File > Finger... (Cmd+F)
    • Query user information on remote hosts via TCP port 79
    • Host, username, and verbose (/W) fields in Finger dialog
    • Finger forwarding: user@host@gateway auto-splits and routes correctly
    • Remembers last finger host/username across launches
    • Status bar shows "finger | [user@]host"
    • Window title includes "(finger)" suffix
    • Per-bookmark protocol selection (Telnet or Finger) in bookmark editor
    • Favorites submenu dispatches finger bookmarks correctly
  • Configurable build system with 16 compile-time feature flags
    • 3 build presets: minimal (~256KB), lite (~384KB), full (~768KB)
    • Every major feature can be toggled: --finger, --color, --glyphs, --cp437, --clipboard, --savefile, --bookmarks, --darkmode, --dblwidth, --altscreen, --offscreen, --statusbar, --cursorstyles, --tabstops
    • Configurable sessions (1-4) and scrollback lines (0-256)
    • SIZE resource (Finder memory partition) dynamically computed from enabled features
    • Presets applied first, individual flags override: --preset minimal --finger --bookmarks
    • Three-layer guard pattern: CMake source exclusion, header no-op stubs, inline #ifdef guards (~163 guard sites across 26 files)
    • FlynnPrefs struct unchanged for cross-build prefs compatibility
  • Three release editions: Flynn (full), Flynn Lite, Flynn Minimal
  • Build documentation: docs/BUILD.md with complete flag reference, memory costs, presets, and examples
  • Direct offscreen memory writes bypass QuickDraw traps for rendering (font bitmap cache, direct glyph blit, direct erase/fill)
  • Shadow buffer skips unchanged rows via memcmp
  • Scroll sync uses memmove instead of CopyBits
  • Color GWorld offscreen buffer eliminates flicker on System 7
  • Optimized scrollbar arrow scrolling: ScrollRect + offscreen memmove renders only 1 row per arrow click instead of full 24-row redraw

Fixed

  • Dark mode rendering bugs: white bar at window bottom, status bar artifacts, stale offscreen content
  • Offscreen buffer reuse: clear pixel data when reusing for different window with same dimensions (prevented stale session content bleed)
  • Scrollback ring buffer index: corrected formula for partially-filled buffers (was sb_head+sb_count+sb_row, now sb_head+sb_row)
  • Drain loop data race: process pending TCP data before checking for disconnect state transition
  • System 7 GWorld rendering stability and artifact fixes
  • icl8/ics8 icon polarity for System 7 color displays
  • 68000 address error in offscreen_fill_rect

Changed

  • Default build uses full preset: 4 sessions, 192-line scrollback, ~768KB
  • Binary size: 91KB minimal, 125KB default, 130KB full
  • Release script builds all 3 presets and uploads 6 artifacts per release
  • FlynnPrefs v12 (finger_host, finger_user, bookmark_protocol[])
  • File menu: Finger... inserted at position 2, items renumbered
  • Control menu disabled for finger sessions
  • Bookmark edit dialog: protocol popup (Telnet/Finger), dialog enlarged
  • Performance and security review: hardening, leak fixes, dead code removal, optimizations, and refactoring

[1.9.5] - 2026-03-14

Added

  • Double-buffered rendering, local echo, fast key repeat, send-then-poll echo, 3 new emoji, glyph bitmap cache

Fixed

  • Bookmark list overflow, ScrollRect dark mode flash, ScrollRect dirty flag misalignment, stale offscreen on session destroy, multi-window cross-session blit

Changed

  • 12 performance improvements (ScrollRect 10x, partial CopyBits 95%, jump scrolling 7-10x, batched TCP reads, double-DrawText bold 14.5x, mono path split, glyph run merging, etc.), plus offscreen-based update events/dark mode/resize, prefs v10
  • Build size: ~119KB (up from ~103KB, offscreen buffer and glyph cache)
  • Memory: ~90KB/session mono, ~110KB/session color

[1.9.4] - 2026-03-11

Fixed

  • Option+Space (Ctrl-Space) not recognized: vkey_to_base table was 48 entries, Space at vkey 0x31 (49) fell outside it. Extended table to include Space, enabling Ctrl-Space (0x00) for tmux prefix and similar
  • Option+/ (Ctrl-/) not recognized: added '/' to vkey_to_base table with special case since '/' & 0x1F produces wrong value (0x0F instead of 0x1F)
  • ANSI-BBS disconnect losing goodbye screen: telnet_init() zeroed the session's preferred_ttype before the snapshot restore check, so bookmark-specific ANSI-BBS sessions saw the global pref (e.g. xterm) and incorrectly restored the pre-clear snapshot. Now saves the session's terminal type before reset

[1.9.3] - 2026-03-11

Added

  • 13 new Unicode glyph mappings: flower/florette dingbats (U+273E-2741), snowflake (U+2744), sparkles (U+2728), flower emoji (🌸🌺🌼🌟💫), plus 2 new QuickDraw primitives (flower, snowflake)
  • OSC 4 palette color query (rgb:RRRR/GGGG/BBBB replies from 256-color palette), OSC 10/11 default fg/bg color queries (dark_mode-aware), OSC 12/112 cursor color set/reset (no-op on monochrome XOR cursor)
  • Hierarchical submenus: Options menu now uses Font and Terminal Type submenus (20 items → 5), fixing menu scrolling off-screen on Mac Plus. File menu uses Favorites submenu for bookmark entries
  • Backspace mode toggle: DEL (0x7F) default for xterm/VT220, BS (0x08) for ANSI-BBS. Auto-switches when changing terminal type; manual override in Options menu ("Backspace Sends BS" checkmark)
  • Send Ctrl-H and Send Ctrl-X items in Control menu
  • Prefs v8→v9 migration for backspace_bs field

Fixed

  • Dark mode shutter effect on monochrome: EraseRect (white) → draw → InvertRect caused visible white flash per row. Now renders directly with PaintRect (black bg) + srcBic/patBic (white drawing)
  • BBS goodbye screen not displayed on disconnect: drain remaining TCP data before closing on TIME_WAIT; skip snapshot restore for ANSI-BBS terminal type to preserve goodbye screen
  • DNS lookup failure after prefs migration: backspace_bs field was inserted before dns_server in the FlynnPrefs struct, shifting all subsequent fields by 1 byte. DNS server "1.1.1.1" became ".1.1.1" (invalid), and username lost its first character. Fixed validation to reject leading-dot IPs and reset dns_server in migration
  • Backspace mode not auto-enabled when connecting with ANSI-BBS terminal type via bookmark or new session (only worked from Options menu)

Changed

  • Bookmarks renamed to Favorites throughout UI (menus, dialogs, labels)
  • Terminal Type menu reordered: xterm, xterm-256color, VT100, VT220, ANSI-BBS (display order decoupled from internal storage indices)
  • Connection status window widened from 240→320px, hostname truncation 40→50 chars to accommodate longer hostnames
  • Performance: hot path optimizations in terminal parser and draw routines
  • Security: bounds checking on terminal response buffer flush
  • Dead code removal: ~50 lines removed, unused functions and defines cleaned up
  • Defensive improvements: conn_send() rejects zero-length writes, removed unused idle_skip field from Connection struct

[1.9.2] - 2026-03-10

Added

  • CP437/ANSI-BBS terminal emulation for bulletin board systems
    • Full 256-entry CP437 lookup table mapping each byte to ASCII, Mac Roman, or QuickDraw glyph rendering
    • cp437_mode bypasses UTF-8 decoder for raw byte rendering, essential for BBS art using 0x80-0x9F range (C1 control code collision in UTF-8 mode)
    • ANSI-BBS terminal type in TTYPE negotiation, settings, preferences menu, and connect dialog — follows BBS community convention (ansi-bbs = CP437)
  • True SGR attribute rendering
    • Italic (SGR 3) via TextFace(italic)
    • Strikethrough (SGR 9) via horizontal line at cell mid-height
    • Dim (SGR 2) halves foreground RGB on color systems
    • Blink (SGR 5/6) promotes background to bright colors (DOS-style)
  • Bold-to-bright color promotion: SGR 1;30-37m promotes to bright colors (indices 8-15), matching standard ANSI/BBS behavior
  • UTF-8 CP437 fallback for BBSes that send raw CP437 bytes despite xterm-256color TTYPE negotiation
  • 57 new QuickDraw glyph primitives: double-line box drawing, mixed junctions, smileys, Greek/math symbols (160+ total primitives)
  • 18 fractional block element glyphs (U+2581-U+258F, U+2594-U+2595)
  • 60 sextant characters (U+1FB00-U+1FB3B) as 2x3 grid patterns
  • DNS-over-TCP fallback for NAT environments
  • Rendering diagnostic script (scripts/render-test.sh)

Fixed

  • DNS resolution through NAT: Snow's DaynaPORT rewrites UDP source IPs, causing Flynn to reject valid DNS responses. Removed redundant source IP validation (txn_id match already authenticates responses)
  • Backspace sends BS (0x08) instead of DEL (0x7F) for BBS compatibility (Linux telnetd accepts both; BBSes universally expect BS)
  • Bytes 0xF8-0xFF silently dropped by UTF-8 parser — now route to CP437
  • Legacy Computing chars (U+1FB00-U+1FBFF) produced double '??' instead of single '?' (they are single-width, not wide)

Changed

  • Glyph count: 103 → 160+ QuickDraw primitives
  • Dead code removal: 25 cases from boxdraw_to_dec() superseded by glyph tables, 3 cases from unicode_symbol_to_macroman(), dead block element fallback block (~50 lines, ~700 bytes recovered)
  • Performance: eliminated double cell fetch in draw_row() (~80K cycles/redraw saved on 68000), replaced dark shade MULU with shift operation
  • New source files: cp437.c, cp437.h

[1.9.1] - 2026-03-10

Changed

  • Version bump to 1.9.1 (docs and build metadata only)

[1.9.0] - 2026-03-10

Added

  • 256-color support on System 7 with Color QuickDraw
    • Full 256-color palette: 16 ANSI colors + 216 color cube + 24 grayscale
    • Truecolor (24-bit) SGR sequences downgraded to nearest 256-color match
    • Palette Manager rendering via PmForeColor/PmBackColor for performance
    • Color windows with NewCWindow/NewPalette on System 7, standard NewWindow on System 6
    • Runtime detection via SysEnvirons() hasColorQD — zero impact on System 6
    • Per-cell foreground and background colors stored in CellColor arrays
    • ATTR_HAS_COLOR (bit 6) flag for fast skip of default-colored cells
    • Color-aware dark mode: swaps default fg/bg, skips InvertRect on color systems
    • New source files: color.c, color.h
    • Memory: +52KB per session on System 7 color, zero on System 6 monochrome
  • 38 new QuickDraw primitive glyphs (103 total, up from 65):
    • Outline triangles: △ ▽ ▷ ◁ (U+25B3, U+25BD, U+25B7, U+25C1)
    • Small filled triangles: ▸ ◂ (U+25B8, U+25C2)
    • Diamonds: ◆ ◇ (U+25C6, U+25C7)
    • Half-circle variants: ◐ ◑ ◒ ◓ (U+25D0-U+25D3)
    • Fisheye circle: ◉ (U+25C9)
    • Six-pointed star: ✶ (U+2736)
    • Circled operators: ⊙ ⊕ ⊖ ⊗ (U+2299, U+2295-U+2297)
    • Superscript digits: ⁰¹²³⁴⁵⁶⁷⁸⁹ (U+2070, U+00B9, U+00B2, U+00B3, U+2074-U+2079)
    • Subscript digits: ₀₁₂₃₄₅₆₇₈₉ (U+2080-U+2089)
    • Superscripts/subscripts rendered at 60% font size with scaled positioning

Fixed

  • Terminal type not saved between sessions — Connect dialog now persists the last-used terminal type (xterm, VT220, VT100, xterm-256color)
  • Cursor XOR artifacts on color systems — arrow key editing on System 7 caused stale inverse highlights because CSI cursor movement didn't mark rows dirty. Now tracks cursor position changes and marks affected rows
  • Disconnect screen preservation — screen buffer snapshotted on full clear (ESC[2J) and restored on disconnect, instead of wiping to blank
  • Session not cleaned up on bookmark connect failure — now properly destroys session if TCP connect fails after window was created
  • Replaced all sprintf with snprintf across 15 call sites (defense-in-depth buffer overflow protection)
  • Added bounds check to TTYPE/TSPEED subnegotiation buffer in telnet.c

Changed

  • Glyph emoji base relocated from 0x60 to 0x80 to accommodate expanded primitive range (0x00-0x66)
  • Lazy allocation of alt-screen and scrollback color arrays — deferred until first use, saving up to 38.5KB/session on System 7
  • Screen snapshot moved from shared static to per-session Terminal struct for multi-session correctness; only triggers on full-screen clear instead of every data receive (~1.5ms/receive saved on 68000)
  • Color default restore deferred to end of row instead of per-run, reducing redundant RGBForeColor/RGBBackColor traps by 10-15%
  • Removed idle polling skip counter — eliminates 8.5ms average added latency on keystroke echo
  • Single-session fast path in event loop — skips save/load state cycling when only one session is open
  • Idle WaitNextEvent timeout reduced from 500ms to 167ms when disconnected
  • SIZE resource increased from 640KB/512KB to 768KB/640KB for 4-session color headroom
  • Removed ~450 lines of dead code: deleted dnr.c/dnr.h (superseded by dns.c), 14 unused functions, 4 unused defines, deduplicated ATTR_HAS_COLOR definition
  • Build size: ~103KB (down from ~110KB after dead code removal)
  • Memory per session: ~79KB System 6 mono, ~92KB System 7 color (initial), ~130KB fully loaded with alt screen and scrollback color

[1.8.1] - 2026-03-10

Fixed

  • Add icon family resources (icl4, icl8, ics#, ics4, ics8) for System 7 Finder compatibility — custom Flynn icon now displays correctly instead of generic application icon

[1.8.0] - 2026-03-10

Added

  • System 7 improvements (all conditional, System 6 behavior unchanged):
    • MultiFinder suspend/resume: proper app4Evt handling, cursor blink stops when backgrounded, WaitNextEvent sleep increases to 60 ticks when suspended
    • Required Apple Events: kAEOpenApplication, kAEQuitApplication handlers for System 7 compliance (Finder can request clean quit)
    • StandardPutFile: modern System 7 save dialog for Save Contents, falls back to SFPutFile on System 6
    • Notification Manager: flashes Apple menu diamond when a session disconnects while Flynn is in the background
    • Machine type in About dialog: shows "Running on Macintosh Plus" (or SE, II, IIci, etc.) via Gestalt

Changed

  • About dialog simplified per Apple HIG: condensed to app name/version, machine type, copyright, and GitHub link

[1.7.1] - 2026-03-10

Added

  • Save Contents... (Cmd+S): save terminal scrollback and screen buffer to a plain text file via SFPutFile dialog. Creates TEXT/ttxt files readable by TeachText. Default filename is the connection hostname.
  • New savefile.c/savefile.h module for file save functionality

Changed

  • File menu reorganized per Apple HIG:
    • "Save Contents..." (Cmd+S) in its own section
    • "Bookmarks..." (Cmd+B) leads the bookmark section
    • Recent bookmarks listed under Bookmarks
    • "Add Bookmark..." (renamed from "Save as Bookmark...") moved after recents
    • Separators between file operations, save, and bookmark management
  • Cmd+S reassigned from "Save as Bookmark" to "Save Contents" (standard HIG convention for Cmd+S = save to file)
  • "Add Bookmark..." is now a dynamic menu item, enabling proper bookmark section grouping with Bookmarks... as the section leader

[1.7.0] - 2026-03-10

Changed

  • Major codebase refactor: main.c reduced from 3,478 to ~494 lines (86% reduction)
  • Extracted dialogs.c: all dialog handling (connect, bookmarks, about, disconnect)
  • Extracted menus.c: menu management with per-menu dispatch handlers
  • Extracted input.c: keyboard/mouse handling with data-driven key mapping tables
  • Extracted clipboard.c: copy/paste/select all operations
  • Extracted macutil.c: shared utilities (c2pstr, sprintfp, set_wtitlef, clear_window_bg)
  • Extended session.c: font presets, ttype/font string helpers, window resize, init from prefs
  • Collapsed identical telnet option handlers with fallthrough in telnet.c
  • Extracted conn_resolve_host() from conn_connect() in connection.c
  • Split handle_menu() into per-menu handlers (handle_file_menu, handle_edit_menu, etc.)
  • Data-driven key mapping replaces if/else chain in handle_key_down()
  • Total compiled LOC reduced from 12,027 to 10,036 (17% reduction)

Fixed

  • Remote disconnect preserves terminal screen content (was wiped by terminal_reset)
  • Window repaint after disconnect alert restores terminal content in all modes

Removed

  • Dead conn_open_dialog() from connection.c
  • 6 unused TCP wrapper functions from tcp.c (~256 lines)

[1.6.1] - 2026-03-10

Fixed

  • MacTCP.h: add forward declarations for struct GetAddrParamBlock, ICMPParamBlock, TCPiopb, and UDPiopb to eliminate "declared inside parameter list" compiler warnings
  • tcp.h: alias proc typedefs (TCPIOCompletionProc, TCPNotifyProc, etc.) to actual MacTCP UPP types instead of incompatible ProcPtr/re-declared function pointers, eliminating all -Wincompatible-pointer-types warnings
  • MacTCP.h: convert from classic Mac CR to Unix LF line endings for consistent cross-platform source formatting

[1.6.0] - 2026-03-10

Added

  • Edit > Select All (Cmd+A) to select entire terminal screen for copying
  • Per-bookmark settings: username, terminal type, and font saved per bookmark
  • Per-session font and terminal type: bookmark overrides apply only to that session; Options menu checkmarks reflect the active session
  • Recent bookmarks in File menu (up to 5 most recently used)
  • Save as Bookmark (Cmd+S): save current session as a bookmark, pre-filled from the active connection (host, port, username, font, terminal type)
  • Auto-save bookmark settings: changing font or terminal type via Options menu automatically updates the originating bookmark
  • Default button outlines on all dialogs per Apple HIG (3px FrameRoundRect)
  • Cmd+. (Cancel) keyboard shortcut in all dialogs per Apple HIG
  • Tab key cycles through edit fields in Connect and Edit Bookmark dialogs
  • Connection progress window with status updates (Resolving, Connecting) and watch cursor during DNS/TCP operations
  • Scrollback position indicator on right edge of terminal (rail + thumb)
  • Session count header ("N of 4 Sessions") in Window menu
  • Bookmarks popup in Connect dialog (shows selected name, checkmark)
  • xterm-256color terminal type option
  • Custom Finder icon for "Flynn Preferences" file (ICN# 129, FREF/BNDL)
  • System 7 Preferences folder support: preferences stored in System Folder's Preferences folder on System 7+ (unchanged on System 6)

Changed

  • Startup optimization: Connect dialog appears in under 1 second (was 5-6s) by deferring MacTCP initialization to first connection attempt, deferring session/window creation until user clicks Connect, and reordering menu state updates after dialog
  • Connection status window shows "Connecting to..." for IP addresses instead of "Resolving..." (DNS resolution is skipped for direct IPs)
  • Options menu (renamed from Preferences; shorter, period-appropriate)
  • Menu bar order: File, Edit, Options, Control, Window (Window at end per HIG)
  • Control menu: Ctrl keys grouped alphabetically, then Break and Escape
  • File > Close Session (Cmd+W) disconnects, destroys session, and closes window; closing last session keeps Flynn running (use Quit to exit)
  • Window menu is now just the dynamic session list
  • All error alerts use StopAlert, info alerts use NoteAlert per Apple HIG
  • DNS timeout reduced from 15s to 5s per attempt for faster failure feedback
  • Session windows cascade with 30px offset (was 20px)
  • Remote disconnect shows "(disconnected)" in window title bar
  • "Flynn Prefs" renamed to "Flynn Preferences" (matches Apple convention)
  • Preferences I/O uses directory-aware PBH*Sync calls for System 7 compat

Fixed

  • MacTCP initialization failure now shows "MacTCP is not available" alert instead of silently failing
  • Copy always grayed out in Edit menu (update_menus timing with MenuSelect)
  • Cross-session copy/paste: selection state destroyed by idle loop cycling
  • Selection auto-cleared within 17ms by incoming data, making copy nearly impossible on active connections
  • Per-session font corruption when opening sessions with different fonts

Security

  • Telnet: reject unknown options before array indexing (prevents opts[-1] memory corruption from malicious servers)
  • Telnet: track and discard overflowed SB subnegotiations
  • Terminal: full UTF-8 validation (overlong, surrogates, invalid codepoints)
  • Terminal: CSI parameter signed overflow check, SGR skip bounds checks
  • Terminal: snprintf for DSR response, null-terminate OSC on all exit paths
  • DNS: cap record counts to 64, limit compression pointer hops to 128
  • Replace strcpy with strncpy+buflen in ttype/font string helpers
  • snprintf in long2ip() to prevent buffer overrun
  • Validate port range 1-65535 in connect dialog
  • Validate DNS server IP on preferences load

[1.5.0] - 2026-03-09

Added

  • Multiple simultaneous sessions (up to 4) in separate windows
    • Session struct bundles Window, Connection, TelnetState, Terminal per session
    • UIState save/load pattern for per-session cursor blink and text selection
    • Per-connection idle polling skip counter (moved from file-scope static)
  • Window menu (MENU 133, between Edit and Preferences)
    • Close Window (Cmd+W) closes active session window
    • Dynamic window list with checkmark on active session
    • Clicking between windows switches active session
  • File menu (renamed from "Session")
    • "New Session..." (Cmd+N, was "Connect...") — auto-creates new window if current session is already connected
    • "Close Session" (was "Disconnect") — disconnects active session
    • Bookmarks open in new session if current is connected
  • Per-session event routing via window refCon
    • Mouse events routed via FindWindow → session_from_window
    • Key events routed to front window's session
    • Update/activate events routed via WindowPtr
  • Font changes and dark mode toggle apply to all session windows
  • Quit confirms if any session is connected, destroys all on exit
  • Close box on individual windows closes just that session

Changed

  • Version: 1.1.1 → 1.5.0
  • SIZE resource increased from 512KB/384KB to 640KB/512KB
  • Memory per session: ~73KB (Terminal 52KB + Connection 12.5KB + TCP 8KB + misc)
  • New source files: session.c, session.h
  • Single-session performance overhead: ~100µs per idle tick (negligible)

[1.1.1] - 2026-03-09

Added

  • 11 box-drawing primitive glyphs (U+2500-U+253C): ─│┌┐└┘├┤┬┴┼, drawn with edge-to-edge QuickDraw LineTo for seamless tiling
  • 3 shade characters (U+2591-U+2593): ░▒▓, rendered with QuickDraw ltGray/gray/dkGray fill patterns
  • Glyph count: 51 → 65 primitives (15 emoji unchanged)

Fixed

  • MacBinary II CRC-16 recalculated after creator code patch, fixing "application is busy or damaged" deployment errors

Changed

  • Move build.sh and release.sh into scripts/ directory
  • Dev builds use SHA-only naming (Flynn-d724f2b), tagged releases use version-only (Flynn-1.1.1)
  • Replace CRT-filtered screenshots with clean cropped captures
  • Clean up documentation: remove redundant DEVLOG, trim README, consolidate screenshots
  • Mark ROADMAP and AUDIT docs as historical

[1.1.0] - 2026-03-08

Added

  • Unicode glyph rendering system (glyphs.c/glyphs.h)
    • 51 QuickDraw primitive glyphs: arrows, geometric shapes, block elements, card suits, musical notes, mathematical symbols, and more — drawn natively with LineTo, PaintRect, PaintOval, PaintPoly, and PaintArc
    • 15 monochrome 10x10 bitmap emoji rendered via CopyBits (2-cell wide): grinning face, heart eyes, thumbs up, fire, star, checkmark, crossmark, warning, lightning, sun, moon, skull, rocket, party popper, sparkles
    • Braille pattern rendering (U+2800-U+28FF) — 256 dot-grid patterns drawn as filled circles in a 2x4 grid per cell
    • Binary search codepoint-to-glyph lookup table for fast mapping
    • Bold variants: thicker lines (PenSize 2,1) and larger fills for primitives
    • U+00B7 middle dot rendered as centered PaintOval (was misrouted through Latin-1 Mac Roman table producing wrong character)

Fixed

  • Bold text spacing drift: DrawText() with bold TextFace increases advance width by 1px per character, causing cumulative rightward drift that consumed adjacent spaces. Replaced all DrawText calls with per-character MoveTo+DrawChar for absolute positioning (draw_row, draw_line_char fallback, draw_glyph_prim fallback)
  • DCS parser content leak: ESC inside DCS string shared PARSE_OSC_ESC state, causing DCS content to leak as visible text. Added dedicated PARSE_DCS_ESC state
  • CSI parameter overflow: TERM_MAX_PARAMS was 8, but truecolor SGR sequences (38;2;R;G;B foreground + 48;2;R;G;B background) need 12+ params. Increased to 16 with bounds checking
  • CSI colon sub-parameter parsing for SGR 38:2:R:G:B truecolor sequences (colon-separated variant)
  • UTF-8 error recovery: new start byte mid-sequence now resets decoder and reprocesses (was producing garbage output)
  • Invisible Unicode characters (ZWSP, ZWJ, variation selectors, combining marks, BOM) now absorbed silently instead of rendering as '?'
  • Unicode spaces (en space, em space, thin space, hair space) mapped to ASCII space instead of '?'

Changed

  • Version: 1.0.1 → 1.1.0
  • Terminal parser expanded to 9 states (added PARSE_DCS_ESC)
  • TERM_MAX_PARAMS: 8 → 16
  • New source files: glyphs.c, glyphs.h
  • Build size: ~110KB (up from ~98KB, glyph tables and bitmap data added)

[1.0.1] - 2026-03-07

Fixed

  • TCP connect timeout enabled (commandTimeoutValue = 30 seconds)
    • Previously commented out, causing ~5 minute UI freeze when networking was unavailable (no command timeout = wait forever)

Changed

  • Verified compatibility with System 7.5.5 and Open Transport
  • Updated README, About Flynn, and CHANGELOG to document System 7 / Open Transport support

[1.0.0] - 2026-03-07

Added

  • Control menu with 6 items for sending control sequences without a physical Ctrl key:
    • Send Ctrl-C, Send Ctrl-D, Send Ctrl-Z, Send Escape, Send Ctrl-L, Send Break (Telnet IAC BRK)
    • Menu items enabled only when connected
    • MENU resource 132 added, MBAR updated to include it
  • Keystroke buffering to prevent character loss during fast typing
    • Drains all pending key events from the Mac event queue before sending
    • Batches multiple keystrokes into a single TCP send (reduces per-key blocking from synchronous _TCPSend)
    • Single keystrokes still send immediately for interactive feel
    • key_send_buf[256] with buffer_key_send() and flush_key_send()

Changed

  • README: Added Claude Code attribution, navigation TOC, and expanded Acknowledgments (Retro68, Snow emulator as individual entries)
  • About dialog version updated to 1.0.0 (updated to 1.0.1 in next release)
  • Version: 0.11.1 → 1.0.0

[0.11.0] - 2026-03-06

Added

  • Additional font options: Courier 10, Chicago 12, Geneva 9, Geneva 10
    • Preferences > Fonts menu expanded from 2 to 6 items
    • CheckItem logic compares both font_id and font_size
  • Window resizing with grow box
    • Drag-to-resize terminal window, snaps to cell boundaries
    • Terminal buffer increased to 132x50 max (from 80x24)
    • Min window size: 20x5 cells
    • Grow icon drawn clipped (avoids scroll bar lines)
    • NAWS renegotiation sent on resize while connected
  • Proportional font rendering
    • Detects proportional fonts (Chicago, Geneva) in term_ui_set_font()
    • Uses per-character MoveTo+DrawChar to keep text aligned with cell grid
  • Username auto-login field in Connect dialog
    • Sends username automatically on connect (with short delay)
    • Username saved in preferences (v5→v6 migration) and pre-filled
  • charCode-based arrow key fallback for M0110A keyboards
  • Clear terminal screen on remote disconnect
    • Resets terminal and clears window before showing alert

Fixed

  • Cursor misalignment with proportional fonts (Chicago, Geneva)
    • DrawText advanced pen by actual glyph width, not cell width
  • Initial window too large on launch (clamped to 80x24 default, not 132x50 max)
  • Connect dialog labels improved ("Host or IP:", info text removed)

Changed

  • Version: 0.10.1 → 0.11.0
  • FlynnPrefs bumped to v6 (adds username field)
  • TERM_MAX_COLS/TERM_MAX_ROWS: 132x50, TERM_DEFAULT_COLS/TERM_DEFAULT_ROWS: 80x24
  • Memory impact: buffer increase adds ~29KB (total ~60KB, within 4MB limit)

[0.10.1] - 2026-03-06

Added

  • Custom DNS resolver using MacTCP UDP (dns.c/dns.h)
    • Bypasses broken dnrp code resource (crashes on failed lookups due to Retro68 calling convention mismatch)
    • Sends A-record queries to configurable DNS server (default: 1.1.1.1)
    • 15-second timeout per attempt, 2 retry attempts
    • Parses DNS responses including CNAME chains
    • Error-specific alerts: "Host not found", "DNS lookup timed out", "DNS lookup failed"
  • DNS Server preference dialog (DLOG 133)
    • Accessible from Preferences > Networking > DNS Server...
    • User can set any IP address as their DNS server
    • Validates IP format before saving
    • Persisted in FlynnPrefs (dns_server field)
  • Hostname validation in Connect dialog
    • Rejects malformed IPs (e.g., doubled addresses like "1.2.3.41.2.3.4")
    • Validates DNS label length and character rules
  • _UDPRcv() and _UDPBfrReturn() wrappers in tcp.c

Changed

  • Version: 0.10.0 → 0.10.1
  • Preferences menu reorganized into labeled sections: Fonts, Terminal Type, Networking, Misc (disabled section headers)
  • FlynnPrefs bumped to v5 (adds dns_server[16] field)
  • Connection struct gains dns_server field for per-connection DNS config
  • tcp.h converted from CR to LF line endings

[0.10.0] - 2026-03-06

Added

  • Preferences menu (replacing Font menu, MENU 131)
    • Terminal type selection: xterm, VT220, VT100 with checkmark
    • Dark mode toggle for white-on-black rendering
    • Font selection (Monaco 9/12) retained from Font menu
  • Dark/light mode rendering
    • XOR-based inverse on monochrome display (black bg, white text)
    • DEC Special Graphics line-drawing works in both modes
    • Cursor blink (patXor) works identically in both modes
  • ICON resource in About dialog (32x32 mono, same as Finder icon)
  • Preferred terminal type in TTYPE negotiation
    • User-selected type sent first, then cycles through remaining types
  • Preferences v3→v4 migration (terminal_type, dark_mode fields)

Changed

  • Version: 0.9.1 → 0.10.0
  • Font menu renamed to Preferences menu with expanded items
  • About dialog layout: taller (215px), consistent margins, icon added
  • 800K floppy image (Flynn.dsk) now includes Read Me and correct FLYN creator code
  • FlynnPrefs struct gains terminal_type and dark_mode fields
  • TelnetState gains preferred_ttype field
  • Build size: ~90KB (estimated)

[0.9.1] - 2026-03-06

Added

  • Custom Finder icon (ICN#/BNDL/FREF resources)
    • 32x32 monochrome CRT terminal with >_ prompt
    • BNDL and FREF associate icon with creator code 'FLYN'
    • Signature resource ('FLYN' 0) for Finder identification
  • "Flynn Read Me" TeachText documentation
    • Usage guide, features, keyboard shortcuts, M0110 key mappings
    • Troubleshooting, bookmarks, font selection, credits
    • Deployed as TEXT/ttxt to HFS image alongside Flynn
  • BinHex (.hqx) archive output in build
    • build.sh generates Flynn.hqx for cross-platform distribution
    • Text-safe encoding preserves resource fork via email/web/BBS
  • About dialog now shows https://www.ecliptik.com
  • Flynn deployed in its own folder on HFS disk (:Flynn:)

Changed

  • Version: 0.9.0 → 0.9.1
  • Settings menu renamed to "Font" (only contains font options)
    • MENU 131 title, all constants and variables renamed
  • build.sh now converts Read Me to Mac CR line endings and prints folder-based deployment instructions
  • Build size: ~88KB (up from ~87KB, icon resources added)

[0.9.0] - 2026-03-06

Added

  • Session bookmarks (Phase 11)
    • Bookmark struct (name, host, port) stored in preferences, max 8
    • Bookmark manager dialog (DLOG 131) with Add/Edit/Delete/Connect buttons
    • UserItem-based list display with click selection and inverse highlight
    • Add/Edit bookmark dialog (DLOG 132) with Name/Host/Port fields
    • Dynamic Session menu: bookmarks appear below Quit separator
    • One-click connect from Session menu bookmark items
    • Preferences v1→v2→v3 migration for bookmark and font fields
    • Extracted conn_connect() from conn_open_dialog() for direct connect
  • Font selection (Phase 12)
    • Settings menu (MENU 131) with Monaco 9 and Monaco 12 options
    • Runtime cell dimensions via GetFontInfo() measurement
    • term_ui_set_font() changes font and recomputes grid
    • active_cols/active_rows in Terminal struct for dynamic grid sizing
    • Window resized with SizeWindow() to fit computed grid
    • NAWS renegotiation sent on font change while connected
    • Font preference saved/restored across launches (font_id, font_size)
    • Checkmark on active font in Settings menu
  • xterm compatibility (Phase 13)
    • Application keypad mode (DECKPAM/DECKPNM, ESC =/ESC >)
    • Numpad keys send SS3 sequences in application mode
    • TTYPE cycling: xterm → VT220 → VT100 (first response is "xterm")
    • Silent consumption of mouse reporting modes (?1000-1006)
    • Silent consumption of focus events (?1004) and cursor blink (?12)
  • UTF-8 support (Phase 14)
    • UTF-8 decoder state machine (2/3/4-byte sequences)
    • Unicode box-drawing (U+2500-U+257F) → DEC Special Graphics (33 mappings)
    • Unicode Latin-1 Supplement (U+0080-U+00FF) → Mac Roman (128-entry table)
    • Unicode symbols → Mac Roman (em/en dash, curly quotes, bullet, ellipsis, euro, pi, delta, sqrt, infinity, trademark, not-equal, etc.)
    • Wide character/emoji → 2-cell ?? placeholder
    • Emoji modifier/ZWJ/skin-tone/variation-selector sequence absorption
    • Unmapped codepoints render as ? fallback

Fixed

  • Screen not cleared on disconnect: do_disconnect() now calls terminal_reset(), telnet_init(), and redraws window
  • Overlapping strncpy UB in conn_connect() when called from conn_open_dialog() — host parameter pointed to same buffer
  • UTF-8 fallback character was Mac Roman 0xB7 (Σ sigma) instead of ?

Changed

  • Version: 0.8.0 → 0.9.0
  • Session menu expanded: Connect, Disconnect, Bookmarks, Quit + dynamic bookmarks
  • MBAR resource updated to include Settings menu (128, 129, 130, 131)
  • Prefs version bumped to 3 (bookmark_count, bookmarks[8], font_id, font_size)
  • ~40 TERM_COLS/TERM_ROWS references in terminal.c changed to active_cols/active_rows
  • Build size: ~87KB (up from ~77KB)

[0.8.0] - 2026-03-06

Added

  • DEC Special Graphics line-drawing characters via QuickDraw
    • draw_line_char() renders box-drawing glyphs using MoveTo/LineTo
    • 18 character mappings: corners (┌┐└┘), tees (├┤┬┴), cross (┼), horizontal (─), vertical (│), diamond (◆), checkerboard (▒), centered dot (·), degree (°), plus/minus (±)
    • Bold attribute renders thicker lines (PenSize 2,1)
    • Inverse attribute renders white-on-black (PaintRect + patBic)
    • Unknown graphic characters fall back to regular text rendering
  • TUI apps now display proper box-drawing borders (tmux, mc, dialog)

Fixed

  • OSC title parsing: semicolon separator was included in title string (e.g. ";Test Title" instead of "Test Title") due to osc_param being modified during digit parsing, causing the semicolon check to be skipped

Changed

  • Version: 0.7.0 → 0.8.0
  • terminal_ui.c draw_row() dispatches ATTR_DEC_GRAPHICS runs to draw_line_char()
  • Build size: ~77KB (up from ~76KB)

[0.7.0] - 2026-03-06

Added

  • Alternate screen buffer (DECSET ?1049/?1047/?47)
    • Save/restore main screen (3.8KB static buffer in Terminal struct)
    • Scrollback frozen during alt screen (vi, nano, less don't pollute history)
    • Clear on switch, restore on switch back
  • OSC window title (ESC]0;title BEL / ESC]2;title ST)
    • Window title bar shows "Flynn - <title>" when set by remote host
    • Reverts to "Flynn - " when title is empty
  • DCS string consumption (PARSE_DCS state, consumed until ST)
  • Application cursor keys (DECCKM, DECSET ?1)
    • Arrow keys send ESC O A/B/C/D when enabled (vi, tmux navigation)
  • Auto-wrap toggle (DECAWM, DECSET ?7)
    • No-autowrap mode overwrites at right margin instead of wrapping
  • Origin mode (DECOM, DECSET ?6)
    • Cursor positioning relative to scroll region when enabled
  • Insert/Replace mode (IRM, CSI 4 h/l)
    • Insert mode shifts line right before placing characters
  • Character set designation (ESC ( 0/B, ESC ) 0/B)
    • G0/G1 charset tracking, ATTR_DEC_GRAPHICS bit (0x08) in TermCell.attr
  • SI/SO charset switching (0x0E/0x0F)
    • Shift Out activates G1, Shift In activates G0
  • DECSC/DECRC extended (ESC 7/8 now save/restore charsets, origin mode, autowrap)
  • Secondary DA response (CSI > c → ESC[>1;10;0c, VT220)
  • Primary DA upgraded to VT220 (ESC[?62;1;6c, was VT100 ESC[?1;2c)
  • Soft reset (DECSTR, CSI ! p)
    • Resets attributes, charsets, modes, scroll region, cursor
  • CSI s/u cursor save/restore (ANSI alternative to ESC 7/8)
  • Bracketed paste mode (DECSET ?2004)
    • Pasted text wrapped in ESC[200~/ESC[201~ markers when enabled
  • F-key support (F1-F12)
    • ADB virtual keycodes for extended keyboards
    • Cmd+1..0 sends F1-F10 for M0110 keyboards without function keys
  • SGR extended color fix
    • 256-color (38;5;N) and truecolor (38;2;R;G;B) sub-parameters now skipped cleanly instead of misinterpreted as blink/underline
  • Additional SGR attribute mappings for monochrome
    • Dim (2) clears bold, italic (3) maps to underline, blink (5/6) maps to bold
    • Bright foreground (90-97) maps to bold
    • Reset codes: not-italic (23), blink-off (25)

Changed

  • Version: 0.6.1 → 0.7.0
  • DA response identifies as VT220 (was VT100)
  • 8-state parser (added PARSE_OSC, PARSE_OSC_ESC, PARSE_DCS)
  • Terminal struct gains ~4KB for alternate screen buffer, charset state, DEC modes, OSC buffer, and window title fields
  • Build size: ~78KB (up from ~70KB)

[0.6.1] - 2026-03-06

Changed

  • Reduced WaitNextEvent timeout from 5 ticks (83ms) to 1 tick (17ms) for faster character echo and improved interactive responsiveness
  • Replaced memset(pb, 0, sizeof(*pb)) in _TCPStatus() with explicit field initialization, eliminating ~200 bytes of unnecessary zeroing per event loop iteration (matches wallops-146 reference pattern)
  • Cached sel.active flag per row in draw_row(), avoiding 80 function calls to term_ui_sel_contains() per row when no selection is active
  • Cached TextFace() value in draw_row() to skip redundant Toolbox calls for consecutive attribute runs with the same style
  • Version: 0.6.0 → 0.6.1

[0.6.0] - 2026-03-06

Added

  • Mouse-based text selection in terminal window
    • Click-and-drag to select text (stream selection, not rectangular)
    • Double-click to select word (contiguous non-space characters)
    • Shift-click to extend selection from cursor to click point
    • Selection renders as inverse video (XOR ATTR_INVERSE per cell)
    • Already-inverse cells render as normal when selected (double inversion)
    • Cursor blink suppressed during active selection
  • Selection-aware copy (Cmd+C)
    • If text is selected: copies only selected text (partial first/last rows)
    • If no selection: copies entire visible 80x24 screen (existing behavior)
    • Trailing spaces trimmed per row, CR between rows
  • Selection automatically cleared on keypress or incoming server data
  • New functions in terminal_ui: Selection struct, 11 public API functions
  • GetDblTime via low-memory global 0x02F0 (Retro68 compatibility)

Changed

  • Version: 0.5.1 → 0.6.0
  • Build size: ~70KB (up from ~65KB)
  • terminal_ui.c draw_row() now computes effective attributes per cell for selection overlay

[0.5.1] - 2026-03-06

Added

  • Cmd+. sends Escape to remote host (classic Mac "Cancel" convention)
  • Clear/NumLock key (vkey 0x47) sends Escape (available on M0110A keypad)
  • charCode 0x1B fallback sends Escape from any source (USB/ADB keyboards)

Fixed

  • Escape key had no effect in Snow emulator — the M0110A keyboard has no physical Escape key, so Snow's akm0110::translate drops host Escape key events entirely. Cmd+. and Clear key now provide Escape functionality.
  • Host Ctrl key had no effect in Snow — the M0110 has no physical Ctrl key. Option+letter (existing fix from 0.5.0) remains the correct way to send control characters on M0110/M0110A keyboards.

[0.5.0] - 2026-03-05

Added

  • Menu state management (update_menus() in main.c)
    • Connect grayed out when connected, Disconnect grayed out when disconnected
    • Copy/Paste enabled only when connected
    • SystemEdit() call for desk accessory support
  • Scrollback viewing with keyboard navigation
    • Cmd+Up/Down scrolls one line, Cmd+Shift+Up/Down scrolls one page
    • Window title shows "[Scroll: -N]" indicator when scrolled back
    • New incoming data automatically returns to live view
    • terminal_get_display_cell() reads from scrollback ring buffer
  • Copy/paste support via Mac clipboard (scrap)
    • Cmd+C copies visible 80x24 screen text (trailing spaces trimmed per row)
    • Cmd+V pastes clipboard text to connection in 256-byte chunks
    • Copy is scrollback-aware (uses display cells, not live screen)
  • Proper About dialog (DLOG 130)
    • "Flynn", "Version 0.5.0", description, copyright, credits
    • Uses GetNewDialog()/ModalDialog()/DisposeDialog()
  • Settings persistence (settings.c/settings.h)
    • FlynnPrefs struct saved to "Flynn Prefs" file (type 'pref', creator 'FLYN')
    • Host and port remembered across launches
    • Connect dialog pre-fills from saved preferences
  • Option key as Ctrl modifier for M0110 keyboard
    • optionKey modifier bit mapped to control characters (key & 0x1F)
    • Fixes ESC and Ctrl+key on real M0110 keyboard (no physical Ctrl key)
  • Quit confirmation alert when connected ("Disconnect and quit?")
  • Connection lost notification alert when remote host closes connection
  • Cursor visibility control (DECTCEM: ESC[?25h / ESC[?25l)
  • Device Attribute response (DA: ESC[c → ESC[?1;2c, VT100 with AVO)
  • Device Status Report response (DSR: ESC[6n → cursor position report, ESC[5n → OK)
  • Generic ALRT 128 resource with OK/Cancel buttons for alerts

Changed

  • Version: 0.4.0 → 0.5.0
  • New source files: settings.c, settings.h
  • Resource file expanded with About dialog (DLOG/DITL 130) and alert (ALRT/DITL 128)
  • Terminal struct gains cursor_visible, response[], response_len fields

[0.4.0] - 2026-03-05

Added

  • Dedicated terminal UI renderer (terminal_ui.c/terminal_ui.h)
    • Monaco 9pt font, 6×12 pixel character cells with 2px margins
    • Batched DrawText() calls scanning for attribute runs per row
    • Bold via TextFace(bold), underline via TextFace(underline)
    • Inverse video via PaintRect + srcBic transfer mode
    • XOR block cursor with ~30-tick blink interval
    • Per-row dirty flags for efficient partial redraw
    • Direct drawing in null event handler (bypasses BeginUpdate/EndUpdate)
  • Full keyboard input mapping in handle_key_down()
    • Arrow keys → VT100 escape sequences (ESC[A/B/C/D)
    • Home, End, Page Up, Page Down, Forward Delete
    • Delete/Backspace → DEL (0x7F), Return → CR (0x0D), Tab → HT (0x09)
    • Escape key (0x1B), Ctrl+key combinations
    • Cmd+key menu shortcuts preserved

Fixed

  • Screen freeze after row 24 (critical): _TCPStatus() was the only TCP function missing memset(pb, 0, sizeof(*pb)). Stale parameter block data caused incorrect amtUnreadData reporting, which led _TCPRcv() (30-second blocking timeout) to hang the entire event loop after the terminal scrolled. Fixed by adding the memset and reducing the timeout to 1 second.
  • Switched from term_ui_invalidate() (InvalRect → updateEvt) to direct term_ui_draw() calls in the null event handler for immediate rendering

Changed

  • Build size: 64KB (up from 61KB)
  • All 14 test scenarios now pass (echo, arrow keys, Ctrl+C, nano, vi)

[0.3.0] - 2026-03-05

Added

  • Client-side Telnet protocol engine (telnet.c/telnet.h)
    • 9-state IAC parser with full option negotiation
    • ECHO, SGA, BINARY, TTYPE (VT100), NAWS (80x24), TSPEED (19200)
    • Adapted from subtext-596 server-side implementation (inverted for client)
  • VT100 terminal emulation engine (terminal.c/terminal.h)
    • 80x24 screen buffer with 96-line scrollback ring buffer
    • Full cursor movement, screen/line clear, insert/delete, scroll regions
    • Text attributes: bold, underline, inverse
    • CSI parameter parser supporting up to 8 parameters
  • Wired telnet and terminal into main event loop
    • Data flow: TCP → telnet_process → terminal_process → display
    • IAC responses automatically sent back to server
    • Basic Monaco 9pt text rendering in window

Fixed

  • Retro68 GCC 12.2.0 compatibility (MacTCP.h, API renames, missing headers)
  • In-repo toolchain build (build.sh, Retro68-build/ gitignored)
  • DLOG resource missing noAutoCenter field for Rez

[0.2.0] - 2026-03-05

Changed

  • Renamed project from telnet-m68k to Flynn
  • App creator code changed from TELN to FLYN
  • Window title, about dialog, and menu items now say "Flynn"
  • Snow workspace renamed to flynn.snoww
  • Updated all documentation, paths, and git remote references
  • Copyright year updated to 2026

[0.1.0] - 2026-03-05

Added

  • Project scaffolding: directory structure, CMakeLists.txt for Retro68
  • Minimal Mac application skeleton (main.c) with Toolbox init, event loop, menus
  • Resource file (telnet.r) with Apple/File/Edit menus and SIZE resource
  • MacTCP wrapper (tcp.c/h) from wallops-146 by jcs
  • DNS resolution (dnr.c/h) from wallops-146 by jcs
  • Utility functions (util.c/h) from wallops-146 by jcs
  • MacTCP.h header from wallops-146
  • README.md with build instructions and acknowledgments
  • LICENSE (ISC) with full attribution for derived code
  • Development journal (JOURNAL.md)
  • .gitignore for build artifacts, disk images, ROMs, reference materials
  • Snow emulator setup with Mac Plus workspace (diskimages/flynn.snoww)
  • SCSI hard drive image with System 6.0.8 installed via automated GUI
  • X11 GUI automation guide (docs/SNOW-GUI-AUTOMATION.md)
  • Testing guide (docs/TESTING.md) with Snow and Basilisk II documentation
  • Development log (docs/DEVLOG.md) with System 6.0.8 installation walkthrough
  • Installation screenshots (docs/screenshots/)
  • Disk creation and driver extraction scripts (tools/scripts/)