User actions and host integration

These IDs describe user-facing behavior and host integration named in Revenant’s maintenance plans. They are not new escape-sequence standards. Optional and undecided designs are identified explicitly; registration alone promises no implementation or release date. Terminal support requires separate evidence.

Separately tracked behavior

Unknown APC diagnostics

Feature ID: diagnostics-unknown-apc. Bounded, non-executing diagnostics for unsupported APC strings; no protocol reply or extra OSC/CSI parser.

Previous and next prompt navigation

Feature ID: ui-prompt-navigation. User actions move the viewport between semantic prompts, including wrapped and evicted history.

Pipe the last command output

Feature ID: ui-pipe-command-output. An explicit user action sends the semantic output range to a configured process over stdin, using validated command cwd.

Clear to prompt

Feature ID: ui-clear-to-prompt. Optional user action whose viewport-versus-history-deletion contract must be decided before implementation.

Notification urgency on X11

Feature ID: notification-x11-urgency. Application notification requests set WM urgency while unfocused and clear it on focus without disturbing other hints.

Desktop notification delivery

Feature ID: notification-desktop-delivery. Optional libnotify delivery of OSC 9/777 titles and bodies as escaped, bounded data while unfocused, with a rate limit, failure backoff, recovery and unchanged urgency.

Progress indicator

Feature ID: ui-progress-indicator. Display normal, error, indeterminate, paused, and cleared application progress without corrupting title state.

Procedural block-element drawing

Feature ID: text-block-drawing. Draw block elements from cell metrics with clipping and the same color/selection rules as text.

Procedural braille drawing

Feature ID: text-braille-drawing. Rasterize braille dots consistently at odd and even cell sizes with an explicit fallback range.

Procedural Powerline drawing

Feature ID: text-powerline-drawing. Rasterize supported Powerline separator glyphs and define when font fallback remains in use.

Copy-highlight feedback

Feature ID: selection-copy-feedback. Timed visual feedback after successful user copy, without changing copied bytes or reacting to OSC 52 writes.

Literal scrollback search

Feature ID: search-scrollback-literal. Bounded incremental Unicode search across logical lines, with wrapped ranges, eviction, and next/previous navigation.

Interactive search overlay

Feature ID: ui-search-overlay. Keyboard-driven query UI with match highlighting and viewport/focus restoration on dismissal.

Copy a search match

Feature ID: search-copy-match. Explicit acceptance of a search match copies it to PRIMARY without losing viewport or ownership semantics.

Kitty graphics storage limit

Feature ID: kitty-graphics-storage-limit. Bound retained decoded image storage and define eviction or refusal behavior.

Kitty graphics command byte limit

Feature ID: kitty-graphics-command-limit. Bound APC command bytes, including chunked transmissions and failed image decoding.

Refresh hyperlink hover after output

Feature ID: hyperlinks-hover-refresh. Refresh an inferred-link underline after the painted text changes while the pointer is stationary.

Terminal tabs

Feature ID: ui-tabbed-terminals. Open design question: multiple terminals in one Xt window, with explicit resource and focus ownership.

Split terminal panes

Feature ID: ui-split-terminals. Open design question: independent terminal panes while preserving Xt and window-manager contracts.

Configuration profiles

Feature ID: configuration-profiles. Open design question: named configurations compatible with X resources rather than an unrelated configuration system.

Live configuration reload

Feature ID: configuration-live-reload. Open design question: reload resource-backed settings with explicit lifetimes, errors, and state preservation.

Terminal state snapshots

Feature ID: session-snapshots. Future backend-owned snapshot interface; do not freeze an application-private wire format in advance.

Raw PTY stream fanout

Feature ID: session-pty-fanout. Future delivery of the raw PTY stream to multiple clients without byte loss or reordering.

Asynchronous scrollback history

Feature ID: scrollback-asynchronous-history. Future history access decoupled from the immediate renderer and parser lifetime.

Independent client viewports

Feature ID: ui-independent-viewports. Future per-client viewport and selection ownership for shared terminal state.

Snapshot resynchronization

Feature ID: session-snapshot-resync. Future recovery of a client by taking a fresh terminal snapshot and resuming ordered stream delivery.

Touchpad inertial scrolling

Feature ID: input-touchpad-inertia. Low-priority smooth-scroll/inertia behavior requiring an XInput2 input path.

Force procedural box characters

Feature ID: resource-force-box-chars. forceBoxChars and the Procedural Glyphs (font-linedrawing) menu item select procedural drawing versus font glyphs for every supported range.

Procedural terminal glyph families

Feature ID: text-procedural-glyphs. A terminal's assessment note lists the exact ranges it draws procedurally, since the boundary differs by emulator.

Retain selection ownership

Feature ID: selection-keep-selection. Selection retention across changes to the screen and mouse selection lifetime.

Retain clipboard ownership

Feature ID: selection-keep-clipboard. Clipboard retention policy and ownership lifetime independent of PRIMARY.

ICCCM text selection targets

Feature ID: selection-icccm-targets. Advertise and convert supported X11 text targets with explicit fallback and ownership rules.

Paste control filtering

Feature ID: paste-control-filtering. Configured handling of control bytes in user paste, distinct from clipboard protocol permission.

Visual bell

Feature ID: bell-visual. User-configured visible bell indication with repaint and timer lifetime semantics.

Scrollbar presentation styles

Feature ID: ui-scrollbar-styles. Supported scrollbar appearance and interaction choices.

Menu and translation-action parity

Feature ID: ui-menu-action-parity. Aggregate inventory: each menu/action is implemented, disabled, or explicitly classified.

Login-shell startup

Feature ID: startup-login-shell. Accepted login-shell option changes the child invocation as specified by xterm.

Hold the window after child exit

Feature ID: startup-hold-after-exit. Configured window retention after the PTY child exits.

Wait for mapping before startup

Feature ID: startup-wait-for-map. Configured ordering of window mapping and child startup.

PTY message permissions

Feature ID: pty-message-permission. Configured message-permission behavior for the child terminal device.

Initial terminal mode settings

Feature ID: resource-terminal-modes. Apply configured terminal/tty mode settings during PTY startup.

PTY session transcript logging

Feature ID: logging-session-transcript. -/+l, -lf, logFile, logInhibit and the logging action control one PTY-output tee; separate from diagnostic log severity.

X11 resource and application identity

Feature ID: x11-resource-identity. Class/instance/WM_CLASS, invocation names, app-default lookup and migration compatibility.

Drag selection across scrolling

Feature ID: selection-drag-scroll. An active mouse drag keeps its anchor on content while the viewport scrolls by wheel, key or autoscroll, extends to the content under the pointer, and ends only when its own button is released.

Keyboard selection extension

Feature ID: selection-keyboard-extension. Shift+Select-style keyboard extension with explicit anchor, focus and ownership rules.

Scroll Lock behavior

Feature ID: input-scroll-lock. Scroll Lock state, input handling and scrolling policy with xterm-compatible semantics.

User fullscreen toggle

Feature ID: ui-fullscreen-toggle. Coherent fullscreen resource/menu/Alt+Return action and EWMH behavior under a real window manager.

Clear saved lines action

Feature ID: ui-clear-saved-lines. The xterm clear-saved-lines action and its binding; reset scope must match the maintained implementation contract.

xterm resource compatibility

Feature ID: xterm-resource-compatibility. Aggregate classification of command-line and X resource surfaces; parsed is not implemented.

Compatibility

Feature support by terminal. Imported claims have not been reverified; unknown is not unsupported.

Feature / stable ID	Alacritty	Apple Terminal	ConPTY (conhost)	Contour	DomTerm	foot	Ghostty	iTerm2	kitty	Konsole	mintty	mlterm	PuTTY	Revenant	RLogin	st	tmux	rxvt-unicode	VTE	wayst	WezTerm	Windows Terminal	xterm	xterm.js
Unknown APC diagnostics diagnostics-unknown-apc	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Previous and next prompt navigation ui-prompt-navigation	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Pipe the last command output ui-pipe-command-output	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Clear to prompt ui-clear-to-prompt	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Notification urgency on X11 notification-x11-urgency	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Desktop notification delivery notification-desktop-delivery	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Progress indicator ui-progress-indicator	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Procedural block-element drawing text-block-drawing	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Procedural braille drawing text-braille-drawing	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Procedural Powerline drawing text-powerline-drawing	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Procedural glyph rendering text-procedural-glyphs	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Copy-highlight feedback selection-copy-feedback	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Literal scrollback search search-scrollback-literal	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Interactive search overlay ui-search-overlay	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Copy a search match search-copy-match	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Kitty graphics storage limit kitty-graphics-storage-limit	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Kitty graphics command byte limit kitty-graphics-command-limit	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Refresh hyperlink hover after output hyperlinks-hover-refresh	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Terminal tabs ui-tabbed-terminals	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Split terminal panes ui-split-terminals	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Configuration profiles configuration-profiles	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Live configuration reload configuration-live-reload	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Terminal state snapshots session-snapshots	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Raw PTY stream fanout session-pty-fanout	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Asynchronous scrollback history scrollback-asynchronous-history	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Independent client viewports ui-independent-viewports	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Snapshot resynchronization session-snapshot-resync	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Touchpad inertial scrolling input-touchpad-inertia	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Force procedural box characters resource-force-box-chars	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Supported	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Retain selection ownership selection-keep-selection	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Retain clipboard ownership selection-keep-clipboard	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
ICCCM text selection targets selection-icccm-targets	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Paste control filtering paste-control-filtering	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Visual bell bell-visual	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Scrollbar presentation styles ui-scrollbar-styles	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Menu and translation-action parity ui-menu-action-parity	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Login-shell startup startup-login-shell	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Hold the window after child exit startup-hold-after-exit	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Wait for mapping before startup startup-wait-for-map	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
PTY message permissions pty-message-permission	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Initial terminal mode settings resource-terminal-modes	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
PTY session transcript logging logging-session-transcript	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
X11 resource and application identity x11-resource-identity	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Drag selection across scrolling selection-drag-scroll	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Keyboard selection extension selection-keyboard-extension	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Scroll Lock behavior input-scroll-lock	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
User fullscreen toggle ui-fullscreen-toggle	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
Clear saved lines action ui-clear-saved-lines	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
xterm resource compatibility xterm-resource-compatibility	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown