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* sl0p: --purpose flag and tab-level purposeuser2026-08-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Completes the two pieces deferred from the first workspace-hints pass. `zellij run --purpose X` / `zellij action new-pane --purpose X` tag a pane at spawn time, which is what an agent wants for panes it creates itself; the OSC wrapper still works for programs that declare their own role. Not supported with --in-place, which replaces another pane rather than being a pane of its own: clap rejects the combination rather than accepting a flag that would do nothing. `tab name="work" purpose="agent-work"` gives a whole tab a role, reported by `list-tabs --json`. It rides the tab's ROOT layout node, reusing the pane field because a tab's root is the tab container and never itself a pane -- asserted by a test for the tightest case (a tab holding exactly one pane), since a leak there would silently mislabel a pane. The interesting part is why the flag first shipped broken. There are TWO protobuf boundaries -- the plugin API and the client->server IPC contract -- and a CLI flag must cross the second one. Defaulting the field in the conversion (what "no protoc" usually forces) compiles cleanly and then silently drops the value in transit, so --purpose parsed, printed a pane id, and did nothing. Fixed by adding the field to both contracts by hand, in the .proto AND the committed generated prost, kept in lockstep so a future regeneration reproduces it: protoc is only needed to regenerate, not to build. Both boundaries now have a round-trip test, and the IPC one was confirmed to fail when the wire read is removed. Sanitising moved to Grid::set_authoritative_purpose, the single choke point every out-of-band source passes through, after the CLI path was observed delivering `bad purpose; rm -rf /` intact into list-panes --json.
* sl0p: per-pane workspace hints (purpose=)user2026-08-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implements the zellij half of sl0p/workspace-hints-proposal.md: a pane can carry an opaque agent-facing hint for what it is FOR, so a project can ship a layout that an agent is able to navigate instead of guessing. zellij never interprets a purpose. The consuming agent owns the entire vocabulary, which is what keeps this to one string threaded along the existing status_bar path rather than a policy engine, and lets the vocabulary change without a rebuild. Two ways in, because declared panes and agent-created panes are different: layout: pane name="server" purpose="dev-server" in-band: printf '\033]5577;1;purpose;agent:build\033\\' The second exists because tagging at spawn time would mean threading a field through 28 SpawnTerminal call sites, and a new action variant is impossible while protobuf enums cannot be regenerated. Wrapping the command costs one printf. A declared purpose outranks an in-band one and cannot be overridden or cleared by it. OSC arrives from whatever the pane happens to be showing, so otherwise a `cat hostile.txt` in the human's editor pane could relabel it as the agent's scratch pane and invite an agent to run commands where the human is working. A layout is written by a human in a file they can read; in-band data only fills a blank. Exposed on PaneListEntry (`list-panes --json`) rather than PaneInfo, which crosses the plugin protobuf API we cannot regenerate; resolved in the screen thread where panes live rather than via route.rs's per-pane PTY round-trips. Values are sanitised to a bounded [A-Za-z0-9_.:/-] token at both entry points, because a purpose is never rendered -- it is matched against and pasted into consumers' shell and JSON pipelines. Verified end to end rather than by inspection: purposes from a layout appear in list-panes --json against the right pane ids, an agent-spawned pane tags itself, a declared purpose survives an in-band override attempt, all of it comes back after kill + resurrect, an unknown pane property is still a parse error, and a layout with no purpose leaves dump-layout unchanged.
* sl0p: hot-reload status_bar_button_styleuser2026-08-12
| | | | | | | | | | | | | | | | The option was only read when a client connected, so changing it needed a new session -- inconsistent with gap/padding/title_alignment, which apply live, and the kind of inconsistency that reads as "my config change did nothing". Threaded through update_frame_layout, the existing vehicle for the fork's pane_frames options: Tab -> tiled/floating containers -> each pane's Style, including suppressed panes so a hidden stack member is styled correctly when it swaps back into view. Verified by editing config.kdl against a running session and watching 1:Approve flip to [Approve] and back, then confirming a click still resolves afterwards -- the button widths change with the style, so a stale layout would have silently mis-targeted clicks.
* sl0p: highlight the status bar button under the pointeruser2026-08-12
| | | | | | | | | | | | | | | | | | | | A click target with no hover feedback gives you no way to tell what you are about to hit, which matters more here than elsewhere because the buttons sit in a frame row that is only one cell tall. The hovered button is inverted rather than merely recoloured: swapping fore/background reads regardless of which colours a theme uses, and makes "the pointer is on THIS one" unmistakable next to its unhovered neighbours. Tracked per client, because hover belongs to a pointer rather than to a pane -- with two users attached, one pointer must not light up the other's button. Stored on the pane keyed by client id, which the frame renderer already has. Updated before the action dispatch rather than in the hover action, because motion over the ACTIVE pane is dispatched as SendToTerminal, not UpdateHover -- and the pane you are about to click a button in is usually the one you are already in. Every other pane's hover for that client is cleared on each motion, so moving between panes cannot leave a button lit behind.
* sl0p: clickable action buttons in the pane status baruser2026-08-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Second slice of the status/action frame. A program declares buttons, and a click is reported back to it: printf '\033]5577;1;buttons;approve:Approve;reject:Reject\033\\' -> click -> program's stdin receives OSC 5577 ; 1 ; click ; approve ST The report is a FIXED format carrying only the id, never bytes the payload chose, and ids are restricted to [A-Za-z0-9_-]. The sequence that creates a button is in-band and untrusted -- `cat` of a hostile file emits it as readily as a cooperating program -- so a click that could send arbitrary bytes would let viewing a file inject into the stdin of whatever is running, a shell included. Labels are '%'-escaped since the wire format is ';'-separated, and both the button count and id length are capped because the list lives as long as the pane. Positions come from one layout_status_bar function that the renderer draws from and the hit-test resolves against. Computing that geometry twice is how the stacked-pane picker once selected the wrong pane; a test asserts every drawn column resolves back to the button drawn there, across 100 widths. Two things the drive caught that unit tests could not: - The first delivery path pushed onto grid.pending_messages_to_pty, which is only drained when the PANE produces output -- so a click on an idle program sat in the queue forever. The write now happens at the tab level, which owns the senders. - The hit-test derived the frame row from the pane's raw geometry, but this fork draws the frame inset by gap_offset, so with `gap 1` every click missed by one row. It now derives from the CONTENT rect, which is by definition the inside of the drawn frame and therefore the same columns the renderer lays out. Buttons serialise with the session like the status text, so a resurrected pane comes back with its buttons intact.
* sl0p: serialise the pane status bar for resurrectionuser2026-08-12
| | | | | | | | | | | | | | | | | | | | | | | The status bar survived detach/reattach (it lives on Grid) but not a serialise/restore cycle, so a resurrected pane came back blank. It now travels the whole per-pane serialisation pipeline, mirroring the fork's existing default_fg/default_bg: pane -> PaneLayoutMetadata -> PaneLayoutManifest -> TiledPaneLayout -> a status_bar property in the serialised KDL, then back through the normal layout parser and applied by LayoutApplier when the pane is recreated. The sanitiser moved from grid.rs into zellij-utils so both entry points share one definition. That matters: a layout file on disk is no more trustworthy than the escape sequence that wrote it -- it may have been hand-edited, or copied from somewhere else -- so restored text is stripped and length-capped on the way in just like the OSC payload was. Verified end to end rather than by unit test alone: set the bar, waited for a serialisation pass, confirmed status_bar="..." in session-layout.kdl, killed the session until list-sessions reported EXITED, then attached and watched it come back from disk. The earlier attempt only proved detach/reattach because Quit had left the session alive.
* sl0p: per-pane status bar via OSC 5577 (experimental)user2026-08-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | First slice of the status/action frame: one row of program-supplied text in a pane's bottom frame row. printf '\033]5577;1;status;building 3/7\033\\' printf '\033]5577;1;clear\033\\' Rendered in the EXISTING frame row rather than in reserved rows. Reserving would shrink the pane's content area and resize its PTY whenever the bar appeared or disappeared, firing SIGWINCH at the program that asked for it -- the same churn that made the stack-list picker use a fixed cap. The frame row is already a text surface with a precedence chain, so this cost no geometry work at all. State lives on Grid like the window title, so it survives re-renders, resizes and detach/reattach with no draining. Session resurrection is NOT covered yet. Versioned from the start, and unknown versions or verbs are ignored, so the planned button verbs cannot be half-interpreted by an older build. Text is the remaining params rejoined with ';', which means a single text field needs no escaping -- the trick OSC 0/2 already uses for titles. Treated as untrusted, because it is: an in-band sequence is emitted just as readily by `cat` of a hostile file as by a cooperating program. Control characters are stripped -- a raw ESC could otherwise repaint anything on screen, a newline would corrupt the frame row -- and the length is capped, since the string is retained for the life of the pane.
* sl0p: separate the hover resize hint from the hover highlightuser2026-08-12
| | | | | | | | | | | | | | | | | | Upstream's mouse_hover_effects governs two unrelated things: the frame highlight on hover, and the "Ctrl <MouseScroll> or <drag borders> to resize" hint. Its own comment in default.kdl admits as much. So silencing a beginner reminder you have outgrown also costs you a highlight that stays useful indefinitely. mouse_hover_help_text (default true) gates only the hint. One line in execute_send_to_terminal; the highlight is set in execute_update_hover and is untouched. Config-file only, deliberately. The option has no protobuf slot, so it does not cross the client/server IPC contract -- the roundtrip test asserts exactly that, with the fixture set to None and a comment explaining why. It still works from the config file because the server parses the file itself and Options::merge keeps the file value when the client sends None; a CLI flag would be silently ignored.
* sl0p: add a minimal style for the stacked-pane pickeruser2026-08-11
| | | | | | | | | | | | | | | | | | | | | The boxed entries read as clutter: every entry bracketed in vertical bars, and the active one marked by a "> " that sits outside its own cell. `stack_list_style "minimal"` drops both. The active entry is shown by inverting it instead, which needs no glyph and no column, and the padding is moved inside the styled run so the inverted block covers the whole cell rather than leaving unstyled gaps at its edges. Four fewer columns of decoration per entry, so more fit per row in grid mode. Uses ribbon_selected rather than text_selected. Themes give ribbon_selected real contrast because it marks the selected item elsewhere in zellij's UI -- gruber yellow here, white-on-blue in the TempleOS theme -- whereas text_selected's background is 40,40,40 against a 24,24,24 terminal and read as essentially no highlight when tried. Decoration width comes from the style itself, so Tab's column arithmetic and the renderer cannot disagree about how wide an entry is. Default stays boxed, so nothing changes for anyone who does not ask.
* sl0p: resolve responsive layouts from current state, not a remembered positionuser2026-08-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Every bug this feature has had came from the same place: it remembered the swap layout position that was active before collapsing, and replayed it to expand. Remembered positions stop applying when the pane count changes, are only stable while nothing is inserted, and a failed apply left the state claiming a transition that never happened. Both directions now resolve fresh. Collapsing picks the configured layout, or a synthesized stack if that one is missing OR cannot currently apply -- a `stacked` layout with min_panes=4 and three panes open used to be found, fail its constraint, and give up. Expanding picks BASE when it still applies, since that reproduces the user's actual layout, and otherwise a synthesized grid. Both chains end in an unconstrained layout, so neither can come up empty. The only remaining state is one bool, flipped only after a layout was applied. Also stops consulting is_tiled_damaged. It is meant to mean "the user rearranged panes by hand" but is equally set when a relayout finds nothing applicable, which happens on the first pane added to a tab with no usable swap layout and then never clears -- it disabled this feature in four distinct situations. It protected little regardless: expanding applies BASE or a grid, so a manual arrangement does not survive a round trip either way. Synthesized layouts are created once and reused; the test asserts the layout list does not grow across repeated collapse/expand cycles, since they are now appended lazily in both directions.
* sl0p: keep expanding possible after the pane count changesuser2026-08-11
| | | | | | | | | | | | | | | | | A tab restores into whatever layout was active before it collapsed, which for a bare layout is the implicit BASE. BASE is pinned to ExactPanes of the count it was written with, so adding one pane while collapsed left nothing to expand into and the tab stayed stacked on every subsequent widening. Two fixes. When the stored layout no longer applies, synthesize a grid to spread the panes out rather than leaving them stacked -- a wide terminal is not a state that retries, so failing here strands the tab for good. And only consume the restore position once a layout has actually been applied. It was cleared unconditionally, so after a failed restore the tab believed it had expanded while visibly still collapsed, and never tried again -- which is why this looked like "expand stopped working" rather than "expand did nothing once".
* sl0p: synthesize a stack layout when none exists to collapse intouser2026-08-11
| | | | | | | | | | | | | | | | | | | | | The collapse selects a swap layout by name, and a custom layout file only gets swap layouts from a hand-written sibling "<layout>.swap.kdl". So for most layouts there was nothing to select and the feature silently did nothing -- requiring a boilerplate file per layout to use it at all. Now a missing layout is synthesized: every pane flattened into one stack, in layout order. Appended rather than inserted, so it cannot shift the BASE layout at position 0, which is what the collapse restores back to. Synthesized lazily, at the first collapse, rather than up front: a stack sitting in the swap cycle would let auto_layout apply it spontaneously when a pane is added, stacking panes on a perfectly wide terminal. Also scopes the damaged-layout guard. With no swap layouts, relayout finds nothing applicable on the first pane added, gives up and marks the tab damaged -- permanently, and with nothing to do with user intent. Honouring that flag disabled the collapse for exactly the bare layouts this fallback targets, so it is now only consulted when the tab has swap layouts the user actually defined.
* sl0p: warn when the responsive layout has no swap layout to collapse intouser2026-08-11
| | | | | | | | | | | | The collapse selects a swap layout BY NAME, so a tab with no swap layouts simply does nothing when the terminal gets narrow -- no error, no hint. The usual cause is not the responsive settings at all: a custom layout file only gets swap layouts from a sibling "<layout>.swap.kdl", so launching with one that has no such file silently disables the feature. That is the second time this feature has failed invisibly (the first was a layout marked damaged), and both cost real debugging time. Logs once per tab, not per resize, and names the actual cause rather than the symptom.
* sl0p: clear the stale picker region when the layout re-flowsuser2026-08-11
| | | | | | | | | | | | | | | | | | | | | | | Adding a pane left old borders on screen until a resize forced a full redraw. Two causes. The picker draws each entry as its own chunk, so the space between and around the entries was never painted and kept the previous frame's contents; and adding a pane really does re-flow the whole grid, because a freshly created pane has no title yet and its "Pane #N" fallback is far wider than a named one, which widens every cell and drops the column count. Separately, refresh_or_dissolve_stack_list changed the reserved row count without forcing a clear, so when the list got shorter the visible pane moved up and the rows it vacated kept their old contents. Blanks only the spans no cell covers, never a cell's own columns: chunks are NOT composited last-wins, so blanking the whole region erased the entries instead of the stale contents under them -- the first attempt at this fix drew exactly one entry. stack_list_row_gaps is a free function so the covering invariant is testable: gaps and cells must tile each row exactly, with no overlap, across a sweep of row caps, label widths and member counts.
* sl0p: optionally render the stacked-pane picker as a griduser2026-08-11
| | | | | | | | | | | | | | | | | | | | | | | `stack_list_layout "grid"` packs picker entries several per row, which turns stack_list_max_rows from a count into a space budget: eight panes in a wide terminal now fit on one row instead of spending three and hiding five. The entry renderer already drew each entry as a single chunk at its own x/y, sized by its geom and centring its own label, so a grid needed no rendering changes at all -- only the loop assigning every entry the same x and the full width. Column count is derived from the widest label rather than configured, so it adapts to the titles; one column is the floor and reproduces the previous full-width rows byte for byte. The row -> member mapping now has a column axis, and it had already caused one wrong-pane bug when two consumers disagreed. So the layout is computed once, by one function, into explicit cells; the renderer, the reserved-row budget and the mouse hit-test all read those same cells rather than each doing their own arithmetic. Windowing is by row, so a grid scrolls a whole row at a time and degrades to the old per-member window when there is one column. Cells are separated by a two-column gap: without it the focused entry's "> " marker sits flush against the previous cell and reads as belonging to it.
* sl0p: click the picker's indicator row to expand a capped stackuser2026-08-11
| | | | | | | | | | | | | | | | | | | | | | The cap made the picker a scrolling viewport -- everything stays reachable by moving focus -- but there was no way to see the whole stack at once. Clicking "+N more" expands it to every member; the indicator becomes "- fewer" and collapses it again. Collapse gets its own label because an invisible way back out is not an affordance. Hangs off the indicator row because that row is already reserved, already rendered, and resolves to no member, so it is free real estate. It is also why this needs no new keybinding: mouse handling is entirely server-side, while Action is a protobuf enum we cannot extend without protoc. A click rather than hover, as expanding changes the reserved row count and so resizes the visible pane's PTY -- acceptable once per deliberate click, not on every mouse move. All three consumers of the row -> member mapping (renderer, reserved-row budget, mouse hit-test) now go through stack_list_window_for, so expansion cannot desync them the way the cap desynced the hit-test in 844617b4.
* sl0p: fix clicking a scrolled stack entry selecting the wrong paneuser2026-08-11
| | | | | | | | | | | | | | | | | | Regression from the picker row cap. The row -> member mapping lives in TWO places: the renderer, and the hit-test that resolves mouse events to a pane. Capping made the renderer draw a WINDOW of the members, so screen row 0 is members[window_start], but the hit-test still resolved row N to members[N]. Any click or hover on a capped stack whose window had scrolled therefore landed on the wrong pane -- with 8 members focused on the last, clicking the top row selected member 0 instead of member 5. Both sites now go through stack_list_window(). Clicks on the "+N more" indicator resolve to no member rather than to a bogus one. Caught by asking how a user reaches the panes past the cutoff, not by the tests: the previous commit tested the window arithmetic and the rendering, but nothing covered this second consumer of the same mapping.
* sl0p: cap how many rows the stacked-pane picker takesuser2026-08-11
| | | | | | | | | | | | | | | | | | | | | | | A stack reserves one row per member plus a padding row, so a deep stack spends most of the screen listing itself. `stack_list_max_rows` caps that; the list windows around the focused member and reports the rest as "+N more". The indicator goes in the padding row the list already reserves, so it costs no extra row and never displaces a real entry. Entries keep their real rank rather than renumbering from 1, otherwise the numbering stops meaning anything once the window has scrolled. The window slides on ordinary focus movement, which is also why this needs no new keybinding -- Action is a protobuf enum and the prost assets cannot be regenerated here (no protoc). A fixed cap rather than hover-to-expand on purpose: reserved_top_rows feeds pane geometry, so growing the list on hover would resize the pane's PTY and reflow whatever is running in it on every mouse move. A real expand/collapse has to be an overlay that reserves nothing, which is a much larger change to the render path. reserved_top_rows and the renderer both go through stack_list_window(); if they disagreed the list would draw into rows the geometry never reserved, i.e. over the pane beneath it.
* sl0p: keep stacked-layout entries identifiableuser2026-08-11
| | | | | | | | | | | | | | | | | | | Two problems made the stack list unusable for panes nothing had named yet, which is the common case right after opening them -- and the responsive collapse walks straight into it, since collapsing is exactly when the list becomes the only way to pick a pane. `hide_default_pane_names` no longer applies to stack list entries. In a frame an empty title is fine: the pane is still visible, sized and positioned, so you can tell what it is by looking at it. In the stack list the label is the ENTIRE affordance, so blanking it leaves rows that cannot be identified or told apart. Entries fall back to the "Pane #N" placeholder even when frames are configured to hide it. Entries are also prefixed with their 1-based position, so they stay countable and addressable even when several share a title or have none. The prefix is built by one shared helper because the renderer and Tab's column-width calculation must agree on its width or the list misaligns.
* sl0p: collapse to a swap layout when the terminal gets narrowuser2026-08-11
| | | | | | | | | | | | | | | | | | | | | | | | Splitting a window into thirds is great until the window is 70 columns wide and each pane gets 23. `responsive_min_cols` collapses the tab into the swap layout named by `responsive_layout` when it gets narrower than that, and restores the previously active layout when it grows back. Selects a swap layout BY NAME rather than adding a size-aware LayoutConstraint: that type crosses both the plugin protobuf API and the client/server contract, and the committed prost assets cannot be regenerated here (no protoc). Restoring uses a 10-column hysteresis band. Without a dead band, dragging a window edge that lands exactly on the threshold flips the layout on every motion event, and every flip resizes every PTY in the tab. "Did the user rearrange panes by hand" is judged from the damaged flag as sampled BEFORE each resize, not the live one: resize_whole_tab's own auto-layout pass sets that flag itself and clears it again only if it found a layout that fits, so on a terminal too narrow for any of them it latches true although nothing was rearranged. And once collapsed, restore stays reachable regardless of the flag, so damage occurring while collapsed cannot strand the tab in the narrow layout.
* sl0p: preview pane reordering live while dragginguser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dragging showed only a green border on the target. The swap is now applied as you drag, so the real layout IS the preview and releasing just keeps it. Dragging elsewhere undoes it and previews the new arrangement; dragging off all panes restores the original. Because swap_panes is symmetric, applying it twice is the identity, so 'undo the preview' is just the same call again. Drop needs no work at all now - the swap already happened - which also removes the old drop-time swap. THE TRAP, which a naive version hits immediately: once the swap is applied the dragged pane sits under the cursor, so the next motion computes the dragged pane as its own target, undoes the swap, which puts the original pane back under the cursor, which re-applies it - oscillating on every motion event and spamming both PTYs with resizes. Avoided by treating two cases as 'the layout already shows what you would get' and doing nothing: - the cursor is over the dragged pane, wherever the preview has moved it; - the cursor is over the pane it is currently swapped with, which after a preview sits at the dragged pane's original position. So a swap is only re-applied when the cursor reaches a THIRD pane, which also keeps PTY resizes down to one pair per target change rather than per event. The dragged pane is kept highlighted rather than the target, so it stays identifiable while the layout moves around it. Note: the state machine lives in the executor and needs a real Tab, so it is reasoned through in the commit and README rather than unit-tested; the decision-level tests cover only which action is produced. Baselines held: zellij-server 1441/30.
* sl0p: rearrange tiled panes by dragging their title baruser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dragging a tiled pane by its title bar and dropping it on another pane swaps the two. Previously the only way to rearrange panes was MOVE mode. The underlying operation already existed: the directional move_pane_* functions are all the same geometry swap, differing only in how they pick the other pane. Extracted as TiledPanes::swap_panes(a, b) so a pane can be swapped with an arbitrary target - the one a drag was dropped onto - which also de-duplicates what was four copies of the same swap. Gesture: the title row EXCLUDING its corners. Corners stay resize handles, so two-axis resize from the top is preserved. Plain top-edge resize is gone and costs nothing: every boundary is shared, so the boundary above a pane is the bottom edge of the pane above and can be dragged from there. A pane at the top of the viewport has the screen edge above it, which was never resizable. Ordering in determine_mouse_action matters three ways: - an in-progress drag is checked FIRST, so motion cannot be reinterpreted as text selection or a resize; - the drag check sits AFTER the double-click check, so the second click of a rename is not swallowed; - and BEFORE the resize branch, which would otherwise claim the title row. Two behaviours had to be preserved deliberately: - Dropping a pane on itself is a no-op, which is what keeps a plain click and a double-click working on the title bar. - Starting a drag focuses the pane. Pressing a title used to start a resize, which focused it as a side effect; without this a plain click on the title would do nothing at all. Stacked panes are excluded from the handle. Their title row is the affordance for focusing/expanding a stack member, and intercepting it broke focus_stacked_pane_under_flexible_pane_with_the_mouse - caught by the suite, not by hand. Baselines held: zellij-server 1440/30 (the 30 are pre-existing).
* sl0p: optionally hide the 'Pane #N' placeholder titleuser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | `ui { pane_frames { hide_default_pane_names true } }`, default false. A pane now shows no title at all until something actually names it: the user renaming it (including by double-clicking the title row) or the running program setting a title. Upstream always shows an auto-generated 'Pane #N'. Implemented by tracking whether pane_title is still the constructor's placeholder, NOT by matching the string: a program that legitimately titles itself 'Pane #3' must not be mistaken for an unnamed pane. set_title clears the flag, since something then chose that title. current_title reads the option at render time rather than baking an empty title in at construction, so it hot-reloads and turning the option back off restores the placeholder on existing panes. Display precedence is unchanged and now explicit in the code: user-given name > title set by the running program > placeholder render_terminal_title already fell back to an empty string rather than the placeholder, so the terminal WINDOW title is unaffected. Empty titles were already handled by the frame renderer (render_title_left_side returns None for an empty title), including the sl0p centred/right alignment path. Baselines held: zellij-server 1436/30, zellij-utils 436/5.
* sl0p: grayscale the contents of unfocused panesuser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `ui { pane_frames { inactive_grayscale 0-100 } }`, default 0 (off). Real colour transformation, not the SGR 'faint' attribute zellij already uses for frames: faint is terminal-dependent, several terminals only apply it to the 16 ANSI colours, and it does not remove colour. Each cell's colour is resolved to RGB and blended toward its own Rec.709 luminance, so an unfocused pane keeps its brightness but drains of colour. Colour resolution covers the cases that actually occur: RgbCode directly, ColorIndex via eightbit_to_rgb, and NamedColor by mapping to its 0-15 index. Cells with NO explicit colour are deliberately left alone - they render in the terminal default, which is already unsaturated, and rewriting them would mean emitting an explicit colour for nearly every cell for no visible gain. Two non-obvious pieces were needed to make it actually work: - The output buffer only emits CHANGED cells, so an idle pane would keep its old colours indefinitely after losing focus. Pane::refresh_for_focus_change forces a full repaint, called from ActivePanes::insert (the single place focus changes). It is a no-op when the feature is off, so it costs nothing by default. - Terminal panes render through the SHARED multi-client path. Focus is per client, so once unfocused panes are desaturated two clients may need different output for the same pane. Both tiled and floating panes now fall back to per-client rendering when grayscale is enabled - the reason this is opt-in. Known limitation: sixel/kitty image chunks are not colour-transformed and stay in colour. Hot-reloads like the other sl0p options. Tests cover the transform: full strength yields a true neutral grey, partial sits between original and grey, indexed and named colours resolve rather than being skipped, luminance is perceptual (green brighter than blue) not a flat average, already-grey is unchanged, and non-colour codes are untouched. Baselines held: zellij-server 1436/30, zellij-utils 436/5.
* sl0p: route mouse rename through the server, fixing stuck rename modeuser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enter/Esc still did not leave rename mode after entering it by double-click. The previous attempt fixed a real trap (a None base_mode makes change_to_default_mode a silent no-op) but not this one. The actual cause: zellij tracks the client's input mode in TWO places. - Screen's ModeInfo, which drives what is rendered. - SessionData::current_input_modes on the server, which is what ROUTES key input to the right handler. The double-click path sent ScreenInstruction::ChangeMode directly, so only the first was updated: the rename prompt appeared and accepted text, while the server still interpreted keys in the previous mode - so Enter and Esc were never treated as rename-mode keys and there was no way out. Action::SwitchToMode (the rename keybind) sends ServerInstruction::ChangeMode instead, and the server handler updates current_input_modes AND derives base_mode from the session config before forwarding to Screen. The mouse path now sends exactly that, so it is the same code path as the keybind rather than an imitation of it. Tab::client_base_mode is dropped: the server supplies base_mode correctly, so it is no longer needed. Lesson worth keeping: 'send the instruction the existing feature sends' beats reconstructing its effects downstream. Both bugs here came from entering the system one layer too low. Baselines held: zellij-server 1429/30.
* sl0p: fix getting stuck in rename mode (base_mode wiped)user2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Double-click-to-rename trapped the client: once in RenamePane, Esc and Enter did nothing and there was no way out without killing the session. Cause: Screen::change_mode() does `mode_info.base_mode = base_mode`, i.e. it OVERWRITES the client's base mode with whatever it is handed. The double-click path passed None, believing that meant 'leave it alone'. It does not - ModeInfo::change_to_default_mode() is: if let Some(base_mode) = self.base_mode { self.mode = base_mode; } so a None base_mode makes leaving ANY temporary mode a silent no-op. The legitimate caller in lib.rs passes Some(base_mode) from the session config; this path had no equivalent. Fix: Tab::client_base_mode() reads the client's existing base_mode (falling back to the tab default) and the rename path passes it through, so entering rename via the mouse leaves the return path exactly as the keybind does. Added a test on ModeInfo pinning the trap itself: change_to_default_mode is a no-op with base_mode None, and returns to the base mode when it is set. That is the property that makes passing None dangerous, and it now fails loudly if anyone assumes otherwise. Immediate escape hatch for a session stuck on an older build: zellij action switch-mode locked (that goes through the server path, which sets base_mode correctly) Baselines held: zellij-server 1429/30, zellij-utils 436/5.
* sl0p: don't let hover steal focus while typing into a rename promptuser2026-08-08
| | | | | | | | | | | | | | | | | | Reported after double-click-to-rename landed: rename one pane, then hovering over other panes puts them in 'edit title' state too. Cause is focus_follows_mouse, not the rename itself. RenamePane is a CLIENT mode that acts on whatever pane is ACTIVE, so with focus-follows-mouse enabled every pane the mouse passes over becomes active and inherits the prompt. The double-click entry point just made it easy to hit, since you finish the gesture with the mouse sitting on a pane frame. Focus-follows-mouse is now suppressed for a client that is in a modal text-entry mode: RenamePane, RenameTab, EnterSearch or Prompt. Those all act on the active pane/tab, so moving focus underneath them is never what the user meant. Keyboard focus movement is untouched. Baselines held: zellij-server 1429/30.
* sl0p: fix double-click-to-rename, which never fireduser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Two independent bugs, either of which alone made the feature dead code. 1. WRONG EDGE. The check was `details.edge == Some(PaneEdge::Top)`, but get_edge_at_position() quadrant-splits a pane and only ever returns the four CORNER variants - PaneEdge::Top exists in the enum and is never produced. A title-row click reports as TopLeft/TopRight, so the condition was never true. Replaced with Pane::position_is_on_title_row(), which tests the geometry directly the same way position_is_on_frame() does for the top border. 2. RESET ON RELEASE. Click recording reset the tracker on any event that was not a frame press - which includes the RELEASE between the two clicks of a double-click. The sequence is press/release/press, so the count went 1 -> reset -> 1 and never reached 2. The tests passed anyway because they hand-built a MouseEventContext with edge: Some(PaneEdge::Top) and called the decision function directly. They asserted my assumption rather than the behaviour, and exercised neither the edge lookup nor the click sequence. Click recording is now a small pure helper (record_frame_click) covered by tests that replay real event sequences: press/release/press is a double-click, motion in between does not break it, a press off the frame does break it, and two clicks at different positions are not a double-click. The decision tests now use the corner edge value that is actually produced. Baselines held: zellij-server 1428/30 (7 new tests).
* sl0p: double-click a pane title to rename ituser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Double-clicking the top edge of a pane's frame focuses that pane and switches the client into RenamePane mode. Everything needed already existed; this is wiring, not new machinery: - grid.rs already tracks repeated clicks (Click, 400ms threshold). It is now pub and reused rather than inventing a second notion of 'double click' that could drift from the one used for text selection. A frame click never reaches the grid, so Tab tracks frame clicks per client separately. - pane.position_is_on_frame() / get_edge_at_position() already give the hit edge, and mouse_handler already computes both. - Screen::change_mode() already calls store_pane_name() when entering RenamePane, so issuing ChangeMode(RenamePane) does the whole setup exactly as the keybind path does. No rename logic is duplicated. Placement in determine_mouse_action matters twice: - AFTER the floating 'start moving' branch, so floating panes keep dragging by their title (that is their move handle). Tiled panes only for now. - BEFORE the resize branch, which would otherwise consume the click as a top-edge resize drag. Only PaneEdge::Top renames; corners stay resize handles. The pane is focused first because RenamePane acts on the ACTIVE pane, so renaming an unfocused pane would otherwise rename the wrong one. Tests cover all three: double-click on Top renames, single click on Top still resizes, and double-click on any other edge or corner does not rename. Baselines held: zellij-server 1424/30 (3 new tests), zellij-utils 435/5.
* sl0p: CSS-style 1/2/4-value shorthand for inner paddinguser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | `padding` now accepts: padding 1 -> all four sides padding 1 2 -> up/down = 1, left/right = 2 padding 1 2 3 4 -> up=1 down=2 left=3 right=4 NOTE the 4-value order is UP DOWN LEFT RIGHT as requested, deliberately NOT CSS's clockwise top-right-bottom-left. Documented on PanePadding and at the parser, since the similarity to CSS invites the wrong assumption. 3 or 5 values are rejected with a message naming the accepted forms, rather than being silently reinterpreted. Negative values clamp to 0. ASPECT: only the 1-value form is aspect-corrected (left/right multiplied by gap_aspect) so `padding 1` looks square on a non-square cell grid. The 2- and 4-value forms are literal: specifying axes separately means the caller is already controlling horizontal size, and silently doubling it would surprise. Style now carries a PanePadding {top,bottom,left,right} instead of an x/y pair, which also collapses the reconfigure plumbing back to a single field rather than growing another parameter per side. to_kdl always emits the explicit 4-value form: emitting the 1-value form would re-apply gap_aspect on the next read and silently double the padding on every config round-trip. Baselines held: zellij-utils 435/5, zellij-server 1421/30.
* sl0p: uniform pane gap + aspect-corrected horizontal gapuser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Two changes to how the gap is defined. 1. UNIFORM GAP. Previously every pane inset every side by `gap`, so two neighbours each gave up a cell and the space between them was 2*gap while the screen edge got only gap. Now a pane insets RIGHT and BOTTOM always, and LEFT/TOP only where that edge is the viewport boundary. Two neighbours contribute exactly one gap between them, and the outer screen edges get the same gap. `gap 1` now means 1 everywhere. The per-side offset is computed in tiled_panes, which is the layer that knows the viewport, and pushed to panes via Pane::set_gap_offset before the content-offset sweep. Floating panes keep a zero gap: they are positioned explicitly by the user, so an inter-pane gap does not apply to them (they still get padding). 2. ASPECT CORRECTION. Terminal cells are roughly twice as tall as they are wide, so an equal number of rows and columns does not look like an equal distance. `gap` and `padding` are now expressed in ROWS, and columns are multiplied by `gap_aspect` (default 2, minimum 1). Style carries the resolved pane_gap_x/y and pane_padding_x/y. FrameConfig::Default is now hand-written rather than derived: gap_aspect must default to 2 to match the KDL parser, otherwise a parsed config disagrees with a default-constructed one and it surfaces as config round-trip diffs (this broke can_define_ui_configuration_in_configfile and both bare_config_from_default_assets_to_string tests). Tests assert the actual invariants: stacked and side-by-side neighbours get exactly one gap between them, screen edges get the same gap as between panes, and inset_by refuses to collapse a pane too small to survive it. Baselines held: zellij-server 1421/30, zellij-utils 433/5.
* sl0p: hot-reload title alignment, gap and padding on config changeuser2026-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | The three sl0p frame options were read once at session start: zellij's ScreenInstruction::Reconfigure carries an explicit, hand-maintained field list (pane_frame_style, rounded_corners, hide_session_name, ...) and ours were not in it, so editing config.kdl did nothing until a new session. Wires them through the existing reconfigure path: lib.rs -> ScreenInstruction::Reconfigure -> Screen::reconfigure -> Tab::update_frame_layout -> {tiled,floating}_panes fanout -> Pane::update_frame_layout Two ordering/coverage details that are easy to get wrong: - Tab::update_frame_layout must run BEFORE set_pane_frames. gap/padding are baked into content_offset when it is set, not read live at render time, so the values must be in place before the sweep that recomputes offsets. - FloatingPanes::set_pane_frame_style only re-runs that sweep when a floating pane is fullscreen, so ordinary floating panes would have kept their old inset until the next resize. The floating fanout now recomputes explicitly. Title alignment needs no recompute (it is read at render time) but rides the same path for consistency; panes clear their frame cache so it repaints.
* Support the Kitty Image Protocol (#5428)Aram Drevekenin2026-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * initial implementation - kinda working * tests and fixes * fix bounds * tests and compatibility fixes * fix: cursor scroll, clears, deletes, key tolerance, and host id range * fix: keep images alive across resize, relayout and history scroll * anchor to lines, not pixels * fix image/text alignments * config to allow disabling * fix pinned pane issue * never let host graphics replies reach the keyboard parser * fix nested session * properly handle fullscreening a pane * rustfmt * cleanup of ignored test * add pr
* Nested session handling (#5417)Aram Drevekenin2026-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * fix: theme query and updated pixel dimensions * add no-ui-fullscreen key/action/capability * protocol core * integration test harness * fix integration tests * fix flaky tests * nested ui (dimming) and directional focus initial implementation * integration tests for nested ui dimming and directional focus * initial full screen nesteed implementation * fix: keep hidden floating panes hidden across nested no-ui fullscreen * fix integration tests * no ui fullscreen integration tests * hardening behavior/tests * fix(nested): re-derive descend/dim on host tab switch and new-tab so clicking dimmed chrome ascends * initial modal implementation * initial ui improvements * fix integration tests * improve nested selection ui * nested session modal refactoring and tests * improve integration test speed somewhat * some ui adjustments * simplify full/auto nested session handling * hints in compact-bar * guest stdin leak fix * allow floating panes to be fullscreen * make nested session handling configurable * protocol reannounce * refactor: naming confusion * improve ux somewhat * rustfmt * merge fixes * improve integration test rate limiting (fix ci) * add pr
* fix(panes): clear custom name when renaming (#5369)miro2026-07-17
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* feat(config): add mouse_scroll_resize option (#5283)WeZZard2026-07-17
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* Allow creating panes/tabs from the CLI without changing focus to them (#5346)Aram Drevekenin2026-07-09
| | | | | | | | | | | * feat: allow opening panes and tabs from the cli without focusing them * rustfmt * fix flake * rustfmt * add pr
* fix: focus last pane correctness issues (#5344)Aram Drevekenin2026-07-09
| | | | | | | * fix: correctness issues with focus-last-pane * rustfmt * add pr
* Stacked list fixes (#5342)Aram Drevekenin2026-07-08
| | | | | | | | | * clear padding line * better stack ui * fix tests * add pr
* UI tweaks (#5337)Aram Drevekenin2026-07-06
| | | | | | | | | | | | | | | | | | | * remove dimmed * clearer list ui * fix integration tests * rustfmt * move hint to tab-bar * redesign stack list * rustfmt * fix e2e * add pr
* Stacked lists (#5331)Aram Drevekenin2026-07-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * initial implementation * improve ui * fix: stacked resize interaction * title list boundaries fix * fix BEL * mouse parity * float/embed + bulk-op features * fix in-place bug * improve ui * config live reload * improve ui * fix issues, add exit status * fix for serialization * fix tests * integration tests * comments * refactor: duplicate title logic * refactor: consolidate logic * fix: flaky tests * add a stacked swap layout * rustfmt * fix e2e * add pr
* Title frames (#5318)Aram Drevekenin2026-06-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * initial implementation * improve single line title design * hint text plugin infra * add proto regen task * display alt text in status bar * don't display text with full frames * style alt hover text * fix + style control own pane hover * make multiplayer indications responsive * update snapshots * plugin api * single pane as tab * better scroll styling * fix tests * tab-bar plus hover * plugin surface tests * integration tests * adjust all integration tests * reduce hover noise * add pane id to in place * more integration tests * style: rustfmt * update plugin assets * update assets and snapshots * add pr
* feat(panes): `FocusLastPane` action (#4241)DawidPietrykowski2026-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * feat(panes): focus last pane (#4142) * add tests * add client id parameter to `add_floating_pane` * add action for floating panes * add tests for floating panes * add keybinds to configs * rebase fixes * simplify focus logic when adding stacked pane * formatting fix * formatting fix 2 * fix: make sure expanding pane always focuses it for all clients in stack * add pr * fix rebase --------- Co-authored-by: Aram Drevekenin <aram@poor.dev>
* Mobile layout (#5241)Aram Drevekenin2026-06-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * phase 2+3 * initial mobile plugin (phases 4 + 5 + 6) * some bugfixes * implement stage 7 * mobile interface improvements * improve mobile pane/tab picker * more ui improvements and fixes * various mobile fixes * some mobile fixes * mobile keyboard triggering fix * some cleanups * initial plugin keyboard implementation * improve keyboard hit zones * improve keyboard * pinch resize * pinching fixes * implement scrolling + panning * initial keyboard resizing * fix: mobile first render issues * keyboard responsiveness * fix some issues with the keyboard * implement fit * fix mobile scrolling * add tilde cell to compact * improve mobile keyboard * fix starting mobile terminal font to natural keyboard size * fix mobile resize blank screen flash * shadow focus for mobile * more keyboard fixes * improve mobile status bar * fix: render plugins to mobile clients * allow opening new panes/tabs from the mobile plugin * allow configuring * fix dot slash * improve mobile native soft keyboard interaction * switch to native keyboard - initial implementation * dirty hacks, but phone keyboard works now * adjust keyboard help strip * fix cursor in mobile * fix keyboard and help line * rename keyboard to modifier bar * allow starting new session * make clicking session name bring us to new session menu * allow switching to desktop from the mobile ui * mobile welcome screen initial implementation * mobile welcome screen fixes * various welcome screen fixes * more mobile fixes * moar mobile fixes * mobile ui redesign * fix: swallowed backspace bug * switch session screen improvement * touch up some interfaces * refactor: move mobile state to own struct * refactor: move fit resizing to the server * remove dead flash code * some cleanups * refactor: clear fit on close * refactor: improve fit api * refactor: pane sync functions * refactor: mouse * refactor: break into modules * some cleanups for the sessions screen * fix scrolling and other stuff * refactor: sessions screen * refactor: panes screen * refactor: new session screen * refactor: menu screen * refactor: render * cleanups * refactor: plugin structure * remove unused welcome screen path * Rename api * refactor input.js * cleanup useless comments * fit/mobile refactoring * take out the garbage * remove more comments * remove mobile flash on startup/attach * fix: various mobile startup issues * fix space bugs * cleanup * rustfmt * fix windows build * adjust modifier bar ui * add pr
* Independent tab sizes (#5133)Aram Drevekenin2026-05-05
| | | | | | | * feat: allow independent tab resizing * rustfmt * add pr
* Fullscreen resize fixes (#5117)Aram Drevekenin2026-05-01
| | | | | | | * fix: properly handle resize while pane is in fullscreen * fix: re-update fullscreen after closing editor pane * rustfmt
* fix: buffer pty processing while waiting for host query reply (#5113)Aram Drevekenin2026-04-30
| | | | | | | * fix: block pty byte processing while waiting for host terminal reply * rustfmt * add pr
* Support CSI2031 (dark/light theme switching) + remove STDIN cache to avoid ↵Aram Drevekenin2026-04-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | stale color queries (#5105) * initial phase 1 implementation * various fies * some fixes * fix fragmented stdin cases * some fixes * renaming * guard against old clients * implement csi 2031 * allow toggling theme with actions * rustfmt * fix: finalize trailing characters in ansi parser as well * add pr
* Some idle CPU and disk/io fixes, new CommandChanged plugin Event (#5063)Aram Drevekenin2026-04-17
| | | | | | | | | | | | | | | * initial implementation * fix mouse cpu spam * prevent excess metadata write and prune sessions on startup * consolidate CommandChanged and PaneCommandChanged * tests * rustfmt * add pr
* fix: respect --name flag when creating new panes (#4979)divens2026-04-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * fix: respect --name flag when creating and renaming panes Three issues fixed: 1. Pane creation: --name was silently discarded for default shell panes because use_terminal_title was true. Now user-provided names take priority. Also pass initial_pane_title as pane_name to TerminalPane constructor (was hardcoded to empty string). 2. CLI rename without --pane-id: was routed through PaneNameInput which appends to existing name. Now uses a dedicated RenameActivePane action that fully replaces the name, working for any name length including single characters. 3. Interactive rename: entering rename mode preserves the existing name for editing (append/backspace). Esc reverts to the name before rename mode was entered. Adds 28 tests covering rename semantics, interactive editing, undo, OSC title interaction, and a wire-level IPC round-trip test. * refactor: route active-pane rename via Option<PaneId> Replace the dedicated Action::RenameActivePane variant with an Option<PaneId> on the existing Action::RenamePaneByPaneId. route.rs dispatches None to the server-internal ScreenInstruction::RenameActivePane and Some(id) to the existing RenamePaneWithPaneId path. Drops all proto/conversion boilerplate for the removed variant: plugin API additions, IPC tag 137, and both directions of the wire conversion. --------- Co-authored-by: divens <divens.dev@gmail.com>