diff --git a/crates/engine/src/tooling.rs b/crates/engine/src/tooling.rs
index d38ac9701..b222f3210 100644
--- a/crates/engine/src/tooling.rs
+++ b/crates/engine/src/tooling.rs
@@ -708,6 +708,14 @@ impl Session {
         Ok(())
     }
 
+    /// The artboard a guide made from a ruler belongs to: with the Artboard tool, its active
+    /// artboard (an artboard guide); with any other tool, none (a canvas guide).
+    pub fn ruler_guide_artboard(&self) -> Option<usize> {
+        let boards = self.active().map_or(0, |d| d.doc.artboards.len());
+        let active = (self.tool.id() == "artboard").then(|| self.tool.options()["active"].as_u64()).flatten();
+        active.and_then(|i| usize::try_from(i).ok()).filter(|i| *i < boards)
+    }
+
     /// A guide dragged out of a ruler, whatever the tool: a vertical one out of the left ruler, a
     /// horizontal one out of the top ruler. `ev` is the pointer in document space (a drag, then the
     /// release), over the canvas or not (`on_canvas`). The guide shows where the pointer is over
@@ -722,11 +730,9 @@ impl Session {
         let g = match self.ruler_guide.take() {
             Some(g) => Some(g),
             None => {
-                let boards = self.active().map_or(0, |d| d.doc.artboards.len());
                 let artboard_tool = self.tool.id() == "artboard";
                 let swap = self.prefs.cmd_ruler_drag_artboard_guides && ev.mods.cmd;
-                let active = artboard_tool.then(|| self.tool.options()["active"].as_u64()).flatten();
-                let artboard = active.and_then(|i| usize::try_from(i).ok()).filter(|i| *i < boards);
+                let artboard = self.ruler_guide_artboard();
                 let view_board = view.artboard;
                 self.with_tool_cx(view, |_, cx| {
                     Some(match (swap, artboard_tool) {
diff --git a/crates/ui-egui/src/canvas/grid.rs b/crates/ui-egui/src/canvas/grid.rs
index 09749fc12..7f000ee78 100644
--- a/crates/ui-egui/src/canvas/grid.rs
+++ b/crates/ui-egui/src/canvas/grid.rs
@@ -178,7 +178,11 @@ pub(super) fn ruler_rects(full: egui::Rect) -> [egui::Rect; 3] {
 /// A drag from a ruler onto the canvas makes a guide where the button is released (the engine's
 /// `Session::ruler_guide`): a horizontal one from the top ruler, a vertical one from the left
 /// ruler, snapped as a moved guide is (with Shift to the ruler's ticks). Released anywhere else,
-/// it makes none. The corner drags the rulers' origin or resets it on a double-click.
+/// it makes none. A double-click on a ruler (both clicks on that ruler) makes a guide at the
+/// pointer, across the ruler's axis (a vertical one on the top ruler, a horizontal one on the
+/// left; swapped in a view turned 90°, where the rulers read the other document axis, and the
+/// nearer axis in between), unsnapped, as one `guide.add` and so one undo step. The corner drags the rulers' origin or resets it on a
+/// double-click.
 pub(super) fn ruler_input(app: &mut VectorcraftApp, ui: &Ui, full: egui::Rect, canvas: egui::Rect, xf: &Xf) -> Option<Point> {
     let [top, left, corner] = ruler_rects(full);
     // Right-click on a ruler or the origin box: the document units, to swap between them as
@@ -189,6 +193,40 @@ pub(super) fn ruler_input(app: &mut VectorcraftApp, ui: &Ui, full: egui::Rect, c
         // (right). Not focusable (`click_and_drag` is): no key acts on a ruler, so Tab skips it.
         let resp = ui.interact(r, egui::Id::unique(id), Sense::CLICK | Sense::DRAG);
         resp.context_menu(|ui| crate::menus::ruler_menu_body(app, ui, &mut unit_clicked));
+        // egui counts a double-click by position and time alone, so a click on the canvas right
+        // at the ruler and one on the ruler would pass for one: the pair counts only when the
+        // ruler's own click before it came within the double-click delay.
+        let last_click = egui::Id::unique(if vertical { "ruler-left-last-click" } else { "ruler-top-last-click" });
+        let now = ui.input(|i| i.time);
+        let first_here =
+            ui.data(|d| d.get_temp::<f64>(last_click)).is_some_and(|t| now - t <= ui.ctx().options(|o| o.input_options.max_double_click_delay));
+        if resp.clicked_by(egui::PointerButton::Primary) {
+            ui.data_mut(|d| d.insert_temp(last_click, now));
+        }
+        if resp.double_clicked_by(egui::PointerButton::Primary)
+            && first_here
+            && let Some(p) = resp.interact_pointer_pos().or_else(|| ui.input(|i| i.pointer.latest_pos()))
+        {
+            // The same document point the drag path reads. A ruler reads the canvas's coordinates
+            // turned with the view, so the guide is the one whose line crosses the ruler's axis:
+            // the vertical one when that axis (the screen's x for the top ruler, y for the left,
+            // in document directions) is nearer the document's x, else the horizontal one. At 0°
+            // that is a vertical guide from the top ruler; at 90° a horizontal one; between, the
+            // nearer axis, whose line still runs through the point and never along the ruler.
+            let at = xf.to_doc(p);
+            let (sn, cs) = xf.rot.sin_cos();
+            let axis = if vertical { (sn, cs) } else { (cs, -sn) };
+            let across = axis.0.abs() >= axis.1.abs();
+            let mut params = json!({"vertical": across, "pos": if across { at.x } else { at.y }});
+            if let Some(ab) = app.session.ruler_guide_artboard() {
+                params["artboard"] = json!(ab);
+            }
+            // The new guide shows even if guides were hidden.
+            app.ui.view.guides = true;
+            if let Err(e) = app.run("guide.add", params) {
+                app.status(e.to_string());
+            }
+        }
         let kind = if resp.drag_stopped() {
             PointerKind::Up
         } else if resp.dragged() {
diff --git a/crates/ui-egui/src/canvas/tests.rs b/crates/ui-egui/src/canvas/tests.rs
index 725c034c0..81008bb0b 100644
--- a/crates/ui-egui/src/canvas/tests.rs
+++ b/crates/ui-egui/src/canvas/tests.rs
@@ -11365,6 +11365,151 @@ fn direct_selection_shows_the_bounding_box_while_cmd_is_held() {
     assert!(app.ui.view.bounding_box, "View › Show Bounding Box is unchanged");
 }
 
+/// #5239: a double-click on a ruler adds a guide at the pointer: a vertical one on the top ruler
+/// at its x, a horizontal one on the left ruler at its y, as one undo step, shown even when
+/// guides were hidden. The first click of the pair adds nothing.
+#[test]
+fn double_clicking_a_ruler_adds_a_guide_at_that_position() {
+    // The ruler to click, the guide's orientation and its position, the pointer at that position.
+    for (top, vertical, pos) in [(true, true, 120.0), (false, false, 80.0)] {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.run("file.new", json!({"width": 400, "height": 300})).unwrap();
+        app.ui.view.rulers = true;
+        app.ui.view.guides = false;
+        let ctx = egui::Context::default();
+        frame(&mut app, &ctx, vec![]);
+        let view = app.view_mut().unwrap();
+        view.zoom = 2.0;
+        view.rotation = 0.0;
+        view.center = Point::new(200.0, 150.0);
+        frame(&mut app, &ctx, vec![]);
+        let rect = app.canvas_rect.unwrap();
+        let xf = Xf::new(rect, app.view().unwrap());
+        let at = if top {
+            pos2(xf.to_screen(Point::new(pos, 0.0)).x, rect.top() - RULER / 2.0)
+        } else {
+            pos2(rect.left() - RULER / 2.0, xf.to_screen(Point::new(0.0, pos)).y)
+        };
+        let guides = |app: &mut VectorcraftApp| {
+            let list = app.session.execute("guide.list", &json!({})).unwrap();
+            list.as_array().unwrap().iter().map(|g| (g["vertical"].as_bool().unwrap(), g["pos"].as_f64().unwrap())).collect::<Vec<_>>()
+        };
+        let steps = |app: &VectorcraftApp| app.session.active().unwrap().history.undo.len();
+        let before = steps(&app);
+        let click = |app: &mut VectorcraftApp| {
+            let button =
+                |pressed| egui::Event::PointerButton { pos: at, button: egui::PointerButton::Primary, pressed, modifiers: Default::default() };
+            frame(app, &ctx, vec![egui::Event::PointerMoved(at)]);
+            frame(app, &ctx, vec![button(true)]);
+            frame(app, &ctx, vec![button(false)]);
+        };
+        click(&mut app);
+        assert_eq!(guides(&mut app), vec![], "a single click adds none");
+        click(&mut app);
+        let got = guides(&mut app);
+        assert_eq!(got.len(), 1, "top ruler: {top}, {got:?}");
+        assert!(got[0].0 == vertical && (got[0].1 - pos).abs() < 0.01, "top ruler: {top}, want vertical {vertical} at {pos}: {got:?}");
+        assert!(app.ui.view.guides, "the new guide is shown");
+        assert_eq!(steps(&app), before + 1, "one undo step");
+        app.run("edit.undo", json!({})).unwrap();
+        assert_eq!(guides(&mut app), vec![]);
+    }
+}
+
+/// A fresh app with a 400 x 300 document, rulers on, the view at zoom 2 turned `rotation` degrees,
+/// and its first frame drawn.
+fn ruler_guide_app(rotation: f64) -> (VectorcraftApp, egui::Context) {
+    let mut app = VectorcraftApp::new(Session::new(), Default::default());
+    app.run("file.new", json!({"width": 400, "height": 300})).unwrap();
+    app.ui.view.rulers = true;
+    app.ui.view.guides = false;
+    let ctx = egui::Context::default();
+    frame(&mut app, &ctx, vec![]);
+    let view = app.view_mut().unwrap();
+    view.zoom = 2.0;
+    view.rotation = rotation;
+    view.center = Point::new(200.0, 150.0);
+    frame(&mut app, &ctx, vec![]);
+    (app, ctx)
+}
+
+/// One primary click at `at`, as three frames (move, press, release).
+fn click_at(app: &mut VectorcraftApp, ctx: &egui::Context, at: Pos2) {
+    let button = |pressed| egui::Event::PointerButton { pos: at, button: egui::PointerButton::Primary, pressed, modifiers: Default::default() };
+    frame(app, ctx, vec![egui::Event::PointerMoved(at)]);
+    frame(app, ctx, vec![button(true)]);
+    frame(app, ctx, vec![button(false)]);
+}
+
+/// The ruler guides as (vertical, position).
+fn guide_list(app: &mut VectorcraftApp) -> Vec<(bool, f64)> {
+    let list = app.session.execute("guide.list", &json!({})).unwrap();
+    list.as_array().unwrap().iter().map(|g| (g["vertical"].as_bool().unwrap(), g["pos"].as_f64().unwrap())).collect()
+}
+
+/// #5239 review: egui counts a double-click by position and time, not by widget, so a click on
+/// the canvas right at a ruler followed at once by a click on the ruler is not a double-click on
+/// the ruler. No guide; two clicks on the ruler still make one.
+#[test]
+fn a_canvas_click_then_a_ruler_click_adds_no_guide() {
+    for (top, canvas_first) in [(true, true), (false, true), (true, false), (false, false)] {
+        let (mut app, ctx) = ruler_guide_app(0.0);
+        let rect = app.canvas_rect.unwrap();
+        // Two points less than 6 pt apart, either side of the ruler's inner edge.
+        let (on_canvas, on_ruler) = if top {
+            (pos2(rect.center().x, rect.top() + 1.0), pos2(rect.center().x, rect.top() - 1.0))
+        } else {
+            (pos2(rect.left() + 1.0, rect.center().y), pos2(rect.left() - 1.0, rect.center().y))
+        };
+        click_at(&mut app, &ctx, if canvas_first { on_canvas } else { on_ruler });
+        click_at(&mut app, &ctx, on_ruler);
+        let want = usize::from(!canvas_first);
+        assert_eq!(guide_list(&mut app).len(), want, "top ruler: {top}, first click on the canvas: {canvas_first}");
+    }
+}
+
+/// #5239 review: the rulers read the canvas's coordinates turned with the view, so a guide made
+/// by a double-click runs across the ruler's axis in any view: it passes through the clicked
+/// point and crosses the ruler's edge at it, never along it. At 90° the top ruler reads the
+/// document's y, so its guide is horizontal; the left ruler reads x, so its guide is vertical.
+/// A view turned part of the way takes the document axis nearer to the ruler's.
+#[test]
+fn a_ruler_double_click_follows_a_rotated_view() {
+    // Rotation (degrees), top ruler's guide is vertical, left ruler's guide is vertical.
+    for (rotation, top_vertical, left_vertical) in [
+        (0.0, true, false),
+        (90.0, false, true),
+        (-90.0, false, true),
+        (180.0, true, false),
+        (270.0, false, true),
+        (30.0, true, false),
+        (60.0, false, true),
+    ] {
+        for top in [true, false] {
+            let (mut app, ctx) = ruler_guide_app(rotation);
+            let rect = app.canvas_rect.unwrap();
+            let xf = Xf::new(rect, app.view().unwrap());
+            let at =
+                if top { pos2(rect.center().x + 37.0, rect.top() - RULER / 2.0) } else { pos2(rect.left() - RULER / 2.0, rect.center().y + 23.0) };
+            click_at(&mut app, &ctx, at);
+            click_at(&mut app, &ctx, at);
+            let got = guide_list(&mut app);
+            let label = format!("rotation {rotation}, top ruler: {top}: {got:?}");
+            assert_eq!(got.len(), 1, "{label}");
+            let (vertical, pos) = got[0];
+            assert_eq!(vertical, if top { top_vertical } else { left_vertical }, "{label}");
+            // Through the clicked point.
+            let doc = xf.to_doc(at);
+            assert!((pos - if vertical { doc.x } else { doc.y }).abs() < 0.01, "{label}: through {doc:?}");
+            // Its direction on screen is not along the ruler: the line crosses the ruler's edge.
+            let along = if vertical { Point::new(doc.x, doc.y + 1.0) } else { Point::new(doc.x + 1.0, doc.y) };
+            let dir = (xf.to_screen(along) - xf.to_screen(doc)).normalized();
+            let across = if top { dir.y.abs() } else { dir.x.abs() };
+            assert!(across > 0.5, "{label}: the guide runs along the ruler ({dir:?})");
+        }
+    }
+}
+
 /// An edit to a 3D effect renders the part it changed on this thread, measured by the renderer
 /// that drew the frame shown ([`vectorcraft_render::Renderer::changed`]): it draws the part with
 /// the 3D art it made to measure it.
diff --git a/docs/gaps.md b/docs/gaps.md
index 21b3d9f6f..dd0c3491e 100644
--- a/docs/gaps.md
+++ b/docs/gaps.md
@@ -1,6 +1,6 @@
 # Gaps
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-10 · **Change:** minor (G5: built-in Status Effects graphic style library; estimate 7–17 → 6–16 h; MCP docs catch-up for UI Frames and Map Markers; previously minor: G5: built-in Inventory Icons symbol library; estimate 8–18 → 7–17 h; previously minor: G9: `.ai` save names a variable font instance's design-space setting, #6388; previously minor: G5: built-in Game Trails brush library; estimate 9–19 → 8–18 h; previously minor: Edit › Edit Custom Dictionary…: its dialog adds, deletes and changes the custom dictionary's words, #4936; previously minor: docs tidy-up, no content change: stray notes at the top moved into the revision table; scores and estimates unchanged; previously minor: G5: built-in Game HUD graphic style library; estimate 10–20 → 9–19 h; previously minor: G5: built-in Map Markers symbol library; estimate 11–21 → 10–20 h; previously minor: right-click on type: Spelling › Auto Spell Check, with its check mark, #4936; previously minor: right-click on a word Auto Spell Check underlined: its suggestions, Ignore All and Add to Dictionary, #4936; previously minor: G2: Effect Gallery thumbnails and in-dialog preview; estimate 1–2 h → 0; Auto Spell Check: `edit.autoSpellCheck` underlines the unknown words, #4936; previously minor: PDF editable import preserves authored ActualText once, including empty/nested spans and authored ordering (#6165); cross-line/style layout remains approximate; scores and estimates unchanged; PDF marked-text export (#6309): compatible glyphs stay on one layout line with per-glyph offsets; scores and estimates unchanged; G5: built-in UI Frames symbol library with default 9-slice; estimate 11–21 h; previously minor: G5: dynamic symbol part on-canvas takes opacity, blend, gradient and pattern; docs Overlap/auto-corners sync; estimate 12–22 h; previously minor: interim macOS cursor delivery, #2292; native validation pending; scores and estimates unchanged; previously minor: Control bar › Snapping includes the existing Snap to Glyph and Alignment Guides toggles (#6164); scores and estimates unchanged; previously minor: G5 docs: Art brush Overlap, Pattern brush auto corners and Global Edit Shift-click leave-out moved from Missing to Done (code already shipped); previously minor: custom dictionary and Ignore All: `text.spelling.addWord`, `removeWord`, `changeWord`, `dictionary` and `ignoreAll`, #4936; previously minor: EPS import: embedded fonts (composite, Type 42, CID-keyed, Type 1, CFF FontSet) draw their glyphs; spell check engine: `text.spelling.check` and `text.spelling.suggest` on craft-proof, #4936; previously minor: floating tab groups collapse into the side icon rail and opened rail panels fold back into it, #5925 in part; G9: EPS gradients drawn as abutting strips import as one gradient, without seams; Tools stays beside the canvas with left-side panels; new gradients follow document color mode; Selection QoL: marquee modes and visible feedback, #5313; #3380 deletion-only review follow-up: independent survivors keep gradient placement, owned subpaths avoid discarded copies, and contracts/status/evidence are clarified; endpoint highlighting remains open; scores and estimates unchanged; Indian-language hyphenation review and license allowlist, #4947; opening a slow file shows a progress window, part of #5930; Hindi catalog and contributor loanword preferences; agent wording pass complete; wider native proofreading welcome; an image zoomed in on is separated, colorized or proofed only where it shows (#4155); scores and estimates unchanged; a document's first frame renders on the render worker, so opening a heavy file no longer freezes the window; scores and estimates unchanged; large images in CMYK documents are shrunk before they are separated into ink planes (#4155); scores and estimates unchanged; `.ai` paths with a Calligraphic brush open brushed, with the 6D Art Pen's channels, and Windows reads the pen's tilt and barrel rotation, #372; scores and estimates unchanged; Compound Shapes add-on, beyond Illustrator; scores and estimates unchanged; Contour add-on, beyond Illustrator; scores and estimates unchanged; a slow first frame is waited for instead of restarting without the graphics adapter, and the menu bar no longer waits for the installed fonts' scan; scores and estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-10 · **Change:** minor (ruler double-click adds a guide at the pointer, #5239; G5: built-in Status Effects graphic style library; estimate 7–17 → 6–16 h; MCP docs catch-up for UI Frames and Map Markers; previously minor: G5: built-in Inventory Icons symbol library; estimate 8–18 → 7–17 h; previously minor: G9: `.ai` save names a variable font instance's design-space setting, #6388; previously minor: G5: built-in Game Trails brush library; estimate 9–19 → 8–18 h; previously minor: Edit › Edit Custom Dictionary…: its dialog adds, deletes and changes the custom dictionary's words, #4936; previously minor: docs tidy-up, no content change: stray notes at the top moved into the revision table; scores and estimates unchanged; previously minor: G5: built-in Game HUD graphic style library; estimate 10–20 → 9–19 h; previously minor: G5: built-in Map Markers symbol library; estimate 11–21 → 10–20 h; previously minor: right-click on type: Spelling › Auto Spell Check, with its check mark, #4936; previously minor: right-click on a word Auto Spell Check underlined: its suggestions, Ignore All and Add to Dictionary, #4936; previously minor: G2: Effect Gallery thumbnails and in-dialog preview; estimate 1–2 h → 0; Auto Spell Check: `edit.autoSpellCheck` underlines the unknown words, #4936; previously minor: PDF editable import preserves authored ActualText once, including empty/nested spans and authored ordering (#6165); cross-line/style layout remains approximate; scores and estimates unchanged; PDF marked-text export (#6309): compatible glyphs stay on one layout line with per-glyph offsets; scores and estimates unchanged; G5: built-in UI Frames symbol library with default 9-slice; estimate 11–21 h; previously minor: G5: dynamic symbol part on-canvas takes opacity, blend, gradient and pattern; docs Overlap/auto-corners sync; estimate 12–22 h; previously minor: interim macOS cursor delivery, #2292; native validation pending; scores and estimates unchanged; previously minor: Control bar › Snapping includes the existing Snap to Glyph and Alignment Guides toggles (#6164); scores and estimates unchanged; previously minor: G5 docs: Art brush Overlap, Pattern brush auto corners and Global Edit Shift-click leave-out moved from Missing to Done (code already shipped); previously minor: custom dictionary and Ignore All: `text.spelling.addWord`, `removeWord`, `changeWord`, `dictionary` and `ignoreAll`, #4936; previously minor: EPS import: embedded fonts (composite, Type 42, CID-keyed, Type 1, CFF FontSet) draw their glyphs; spell check engine: `text.spelling.check` and `text.spelling.suggest` on craft-proof, #4936; previously minor: floating tab groups collapse into the side icon rail and opened rail panels fold back into it, #5925 in part; G9: EPS gradients drawn as abutting strips import as one gradient, without seams; Tools stays beside the canvas with left-side panels; new gradients follow document color mode; Selection QoL: marquee modes and visible feedback, #5313; #3380 deletion-only review follow-up: independent survivors keep gradient placement, owned subpaths avoid discarded copies, and contracts/status/evidence are clarified; endpoint highlighting remains open; scores and estimates unchanged; Indian-language hyphenation review and license allowlist, #4947; opening a slow file shows a progress window, part of #5930; Hindi catalog and contributor loanword preferences; agent wording pass complete; wider native proofreading welcome; an image zoomed in on is separated, colorized or proofed only where it shows (#4155); scores and estimates unchanged; a document's first frame renders on the render worker, so opening a heavy file no longer freezes the window; scores and estimates unchanged; large images in CMYK documents are shrunk before they are separated into ink planes (#4155); scores and estimates unchanged; `.ai` paths with a Calligraphic brush open brushed, with the 6D Art Pen's channels, and Windows reads the pen's tilt and barrel rotation, #372; scores and estimates unchanged; Compound Shapes add-on, beyond Illustrator; scores and estimates unchanged; Contour add-on, beyond Illustrator; scores and estimates unchanged; a slow first frame is waited for instead of restarting without the graphics adapter, and the menu bar no longer waits for the installed fonts' scan; scores and estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x)
 
 ## Feature submission evidence
 
@@ -34,6 +34,7 @@ Artboard Options forwards the active Artboard tool's Scale Artwork with Artboard
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-03 | minor | A double-click on a ruler adds a guide at the pointer (#5239): a vertical one on the top ruler, a horizontal one on the left ruler; scores and estimates unchanged. |
 | 2026-11-08 | minor | #3380, deletion only: preserve gradient placement and exact surviving geometry; consume owned subpaths with a shared original-node snapshot; consolidate status/evidence and document command/helper contracts. Compound behavior and the existing M2 status entry are retained. Endpoint highlighting remains open; scores and estimates unchanged. |
 | 2026-11-07 | minor | #3380 (deletion only): independent surviving path objects; transformed appearance, stacking, selection, cubic handles and Undo/Redo covered by `delete_path_pieces`; compound semantics retained. Endpoint highlighting remains open; scores and estimates unchanged. |
 | 2026-11-06 | minor | G9: EPS import reads gradients a page paints as abutting strips as one linear gradient each (no seams); an Illustrator EPS whose page drew them that way keeps its layers. Estimate unchanged. |
@@ -667,6 +668,7 @@ macOS cursor delivery (#2292) is narrowed to a native host adapter using the exi
 
 - **Done:** Selection artwork drag across visible document tabs (400 ms hover); lossless target copy, source/clipboard preservation and cancellation regressions. Cross-window dragging remains separate.
 
+- **Done (#5239):** a double-click on a ruler adds a guide at the pointer (vertical on the top ruler, horizontal on the left one, swapped in a view turned 90°; both clicks on that ruler) through `guide.add`, unsnapped and in one undo step; no scored gap or estimate reassessed.
 - **Done:** custom document ruler origin (#1212): corner drag with preview, double-click reset to the active artboard, relative X/Y inputs and native save/reopen.
 - **Done:** View › Rulers › Change to Global / Artboard Rulers (`view.globalRulers`, Cmd+Alt+R): artboard rulers, a new document's, count from the active artboard, each artboard with its own zero point; rulers, X/Y fields and guide readouts follow the mode, which is saved with the document. Estimate unchanged.
 - **Done (#2849):** View › Rulers › Show Video Rulers (`view.videoRulers`): the rulers show and count the active artboard in video pixels from its top-left corner, a pixel as many points wide as the artboard's Video Ruler Pixel Aspect Ratio and one point tall ([public source](https://helpx.adobe.com/illustrator/desktop/create-manage-artboards/organize-manage-artboards/set-video-display-options-for-artboards.html)); Hide Video Rulers returns them to the General unit and the ruler origin. Shift-snapping a new guide to ruler ticks still uses the General unit's ticks. Estimate unchanged.
diff --git a/docs/target-app-parity.md b/docs/target-app-parity.md
index 44521ee31..31cb7837c 100644
--- a/docs/target-app-parity.md
+++ b/docs/target-app-parity.md
@@ -1,6 +1,6 @@
 # Parity with Adobe Illustrator
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-11 · **Change:** minor (G5: Status Effects graphic style library; bundled content ~40% → ~42%; MCP symbol libraries list UI Frames and Map Markers; previously minor: G5: Inventory Icons built-in symbol library; bundled content ~38% → ~40%; previously minor: `.ai` and EPS import: stroked type in an envelope maps from its glyphs grown by half its stroke (#3179; scores and estimates unchanged); previously minor: `.ai` and EPS import: warps of type open as mesh envelopes on their saved grid where VectorCraft's warp doesn't draw as their drawn art (#3179; scores and estimates unchanged); G5: Game Trails brush library; bundled content ~36% → ~38%; previously minor: Edit › Edit Custom Dictionary…: its dialog adds, deletes and changes the custom dictionary's words, #4936; previously minor: `.ai` and EPS import: envelopes of type open live where they draw as their drawn art and the layers with them draw as the page (#3179; scores and estimates unchanged); G5: Game HUD graphic style library; bundled content ~34% → ~36%; previously minor: Line Arrow arrowhead (#5421; scores and estimates unchanged); G5: Map Markers built-in symbol library; bundled content ~32% → ~34%; previously minor: right-click on type: Spelling › Auto Spell Check, with its check mark, #4936; previously minor: right-click on a word Auto Spell Check underlined: its suggestions, Ignore All and Add to Dictionary, #4936; previously minor: Canvas: a 3D effect changed on type or a group redraws where its solid was; Fit to Artwork Bounds and per-artboard SVG export build each solid once for all artboards; previously minor: Effect Gallery: a thumbnail for each filter and a preview area inside the dialog, on an original drawing; Raster effects 52% → 55%, hours 1–2 → none; headline numbers unchanged; Auto Spell Check: `edit.autoSpellCheck` underlines the unknown words, #4936; previously minor: PDF editable import preserves authored ActualText once, including empty/nested spans and authored ordering (#6165); cross-line/style layout remains approximate; scores and estimates unchanged; PDF marked-text export (#6309): compatible glyphs stay on one layout line with per-glyph offsets; scores and estimates unchanged; G5: UI Frames built-in symbol library with default 9-slice; bundled content ~32%; previously minor: G5: dynamic symbol part on-canvas opacity/blend/gradient/pattern; strokes remaining no longer lists Overlap/auto corners; symbols ~88%; previously minor: interim macOS cursor delivery, #2292; native validation pending; scores and estimates unchanged; previously minor: harakat paint fallback clarified; previously minor: current Guides feature-area rows consolidated using existing ruler evidence; scores and estimates unchanged; previously minor: Control bar › Snapping includes the existing Snap to Glyph and Alignment Guides toggles (#6164); scores and estimates unchanged; previously minor: G5 docs: Art brush Overlap and Pattern brush auto corners removed from strokes remaining; symbols remaining lists dynamic on-canvas beyond solid and guides outside the art; previously minor: custom dictionary and Ignore All: `text.spelling.addWord`, `removeWord`, `changeWord`, `dictionary` and `ignoreAll`, #4936; previously minor: EPS import: embedded fonts (composite, Type 42, CID-keyed, Type 1, CFF FontSet) draw their glyphs; spell check engine: `text.spelling.check` and `text.spelling.suggest` on craft-proof, #4936; previously minor: floating tab groups collapse into the side icon rail and opened rail panels fold back into it, #5925 in part; `.ai`/EPS type keeps its tab stops, and right-aligned lines with tabs lay out as the file's page, #6147; `.ai`/EPS type from the text document lays its lines out closer to the file's page, within limits, #6137; `.ai` and EPS import: older Art brush objects read; numeric fields step on wheel hover without taking keyboard focus, and a panel wheel turn cannot seed a canvas zoom glide, #5949; Character Styles panel: a double-click on a style's row opens its Character Style Options; the dialog keeps a fixed width and scrolls its sections, so its buttons stay on screen; Tools stays beside the canvas with left-side panels; new gradients follow document color mode; Selection QoL: marquee modes and visible feedback, #5313; SVG CSS classes survive export and repeated import in all four styling modes (#2480); current-main integration retains event attributes and scripts; #3380 deletion-only review follow-up: independent survivors keep gradient placement, owned subpaths avoid discarded copies, and contracts/status/evidence are clarified; endpoint highlighting remains open; scores and estimates unchanged; the canvas keeps selection outlines and anchors between frames; Indian-language hyphenation review and license allowlist, #4947; Stroke gradients: an arrowhead aligned to the tip is painted to the corners of its base, #5964; Drop Shadow and glow dialogs: spinner arrows, #5367, #5368; Stroke Weight Up and Down shortcuts, #5797; Hindi catalog and contributor loanword preferences; full wording review in progress; Properties in Edit Artboards: a Transform section with the reference point above the Artboards section, #5219; the Control bar's Stroke: and Opacity: links scrub their fields, #4088; an image zoomed in on is separated, colorized or proofed only where it shows (#4155); a document's first frame renders on the render worker, so opening a heavy file no longer freezes the window, #4155; Control bar Paragraph section with type selected, #5372; translating unchanged type reuses its glyph and character-stroke outlines; scores and estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x; public release notes through 30.7, August 2026; Units › East Asian Type acts, with Q and Ha units; scores unchanged)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-11 · **Change:** minor (ruler double-click adds a guide at the pointer, #5239; G5: Status Effects graphic style library; bundled content ~40% → ~42%; MCP symbol libraries list UI Frames and Map Markers; previously minor: G5: Inventory Icons built-in symbol library; bundled content ~38% → ~40%; previously minor: `.ai` and EPS import: stroked type in an envelope maps from its glyphs grown by half its stroke (#3179; scores and estimates unchanged); previously minor: `.ai` and EPS import: warps of type open as mesh envelopes on their saved grid where VectorCraft's warp doesn't draw as their drawn art (#3179; scores and estimates unchanged); G5: Game Trails brush library; bundled content ~36% → ~38%; previously minor: Edit › Edit Custom Dictionary…: its dialog adds, deletes and changes the custom dictionary's words, #4936; previously minor: `.ai` and EPS import: envelopes of type open live where they draw as their drawn art and the layers with them draw as the page (#3179; scores and estimates unchanged); G5: Game HUD graphic style library; bundled content ~34% → ~36%; previously minor: Line Arrow arrowhead (#5421; scores and estimates unchanged); G5: Map Markers built-in symbol library; bundled content ~32% → ~34%; previously minor: right-click on type: Spelling › Auto Spell Check, with its check mark, #4936; previously minor: right-click on a word Auto Spell Check underlined: its suggestions, Ignore All and Add to Dictionary, #4936; previously minor: Canvas: a 3D effect changed on type or a group redraws where its solid was; Fit to Artwork Bounds and per-artboard SVG export build each solid once for all artboards; previously minor: Effect Gallery: a thumbnail for each filter and a preview area inside the dialog, on an original drawing; Raster effects 52% → 55%, hours 1–2 → none; headline numbers unchanged; Auto Spell Check: `edit.autoSpellCheck` underlines the unknown words, #4936; previously minor: PDF editable import preserves authored ActualText once, including empty/nested spans and authored ordering (#6165); cross-line/style layout remains approximate; scores and estimates unchanged; PDF marked-text export (#6309): compatible glyphs stay on one layout line with per-glyph offsets; scores and estimates unchanged; G5: UI Frames built-in symbol library with default 9-slice; bundled content ~32%; previously minor: G5: dynamic symbol part on-canvas opacity/blend/gradient/pattern; strokes remaining no longer lists Overlap/auto corners; symbols ~88%; previously minor: interim macOS cursor delivery, #2292; native validation pending; scores and estimates unchanged; previously minor: harakat paint fallback clarified; previously minor: current Guides feature-area rows consolidated using existing ruler evidence; scores and estimates unchanged; previously minor: Control bar › Snapping includes the existing Snap to Glyph and Alignment Guides toggles (#6164); scores and estimates unchanged; previously minor: G5 docs: Art brush Overlap and Pattern brush auto corners removed from strokes remaining; symbols remaining lists dynamic on-canvas beyond solid and guides outside the art; previously minor: custom dictionary and Ignore All: `text.spelling.addWord`, `removeWord`, `changeWord`, `dictionary` and `ignoreAll`, #4936; previously minor: EPS import: embedded fonts (composite, Type 42, CID-keyed, Type 1, CFF FontSet) draw their glyphs; spell check engine: `text.spelling.check` and `text.spelling.suggest` on craft-proof, #4936; previously minor: floating tab groups collapse into the side icon rail and opened rail panels fold back into it, #5925 in part; `.ai`/EPS type keeps its tab stops, and right-aligned lines with tabs lay out as the file's page, #6147; `.ai`/EPS type from the text document lays its lines out closer to the file's page, within limits, #6137; `.ai` and EPS import: older Art brush objects read; numeric fields step on wheel hover without taking keyboard focus, and a panel wheel turn cannot seed a canvas zoom glide, #5949; Character Styles panel: a double-click on a style's row opens its Character Style Options; the dialog keeps a fixed width and scrolls its sections, so its buttons stay on screen; Tools stays beside the canvas with left-side panels; new gradients follow document color mode; Selection QoL: marquee modes and visible feedback, #5313; SVG CSS classes survive export and repeated import in all four styling modes (#2480); current-main integration retains event attributes and scripts; #3380 deletion-only review follow-up: independent survivors keep gradient placement, owned subpaths avoid discarded copies, and contracts/status/evidence are clarified; endpoint highlighting remains open; scores and estimates unchanged; the canvas keeps selection outlines and anchors between frames; Indian-language hyphenation review and license allowlist, #4947; Stroke gradients: an arrowhead aligned to the tip is painted to the corners of its base, #5964; Drop Shadow and glow dialogs: spinner arrows, #5367, #5368; Stroke Weight Up and Down shortcuts, #5797; Hindi catalog and contributor loanword preferences; full wording review in progress; Properties in Edit Artboards: a Transform section with the reference point above the Artboards section, #5219; the Control bar's Stroke: and Opacity: links scrub their fields, #4088; an image zoomed in on is separated, colorized or proofed only where it shows (#4155); a document's first frame renders on the render worker, so opening a heavy file no longer freezes the window, #4155; Control bar Paragraph section with type selected, #5372; translating unchanged type reuses its glyph and character-stroke outlines; scores and estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x; public release notes through 30.7, August 2026; Units › East Asian Type acts, with Q and Ha units; scores unchanged)
 >
 > Vector Halftone preview update (2026-11-10): temporary dot selection marks are hidden, and the bounding box stays available (#6369).
 >
@@ -47,6 +47,7 @@ Artboard Options forwards the active Artboard tool's Scale Artwork with Artboard
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-03 | minor | A double-click on a ruler adds a guide at the pointer (#5239): a vertical one on the top ruler, a horizontal one on the left ruler; scores and estimates unchanged. |
 | 2026-11-09 | minor | Stroke panel: Line Arrow, a 41st generated arrowhead: two arms of the head's weight (stroke weight × arrowhead scale, at least 0.25 pt: the line's weight at 100 % for lines of 0.25 pt or more) at right angles, a sharp tip and square-cut ends, twice as wide as the other heads; bounds and clicks follow each head's own reach (`stroke.set` `LineArrow`, #5421); scores and estimates unchanged |
 | 2026-11-09 | minor | Canvas: a 3D effect (Extrude & Bevel, Inflate, Rotate, Revolve) changed on type or a group draws again where its art was and is, measured by that art; the canvas measures through its renderer and draws the part with the art it made to measure it. Exports and Object › Rasterize take the solid of 3D type. Fit to Artwork Bounds and per-artboard SVG export measure every artboard through one renderer, building each solid once. A 3D effect on a fill or stroke that builds nothing (Revolve after Roughen) no longer overflows the stack on the canvas, in Object › Rasterize and in raster and EPS exports: the fill or stroke draws as without it. Tests `tests::changed::a_3d_effect_changed_on_type_or_a_group_changes_where_its_solid_was`, `fx::tests::a_renderer_measures_the_art_on_each_artboard_building_each_solid_once`, `canvas::tests::an_edit_to_a_3d_effect_redraws_with_the_art_measured`, `fx::tests::a_3d_effect_that_builds_nothing_draws_the_item_as_without_it`. Scores and estimates unchanged. |
 | 2026-11-07 | minor | File formats and Type core (#6147): `.ai`/EPS type keeps its paragraphs' tab stops (positions and alignments; leaders aren't read; at most 1,024 a paragraph and 2^20 a story), and right-aligned area type sets the text after a line's last tab against the right edge, the text before it at its stops; centred and justified lines are aligned as a whole as before; evidence added. Scores and estimates unchanged. |
@@ -650,6 +651,7 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
 - **Smooth widths between width points (#5714):** a variable-width stroke changes width along a smooth curve from one width point to the next, where it used to run in a straight line and turn a corner at each point. The public description is that the path "gradually gets wider or narrower from one point to the next" in "a flowing, continuous curve", and that stacked points make a sharp break ([Peachpit, Expressive Strokes](https://www.peachpit.com/articles/article.aspx?p=2979069)); the exact curve is not documented, so each side follows a monotone cubic (Fritsch–Carlson): no kink at a point, flat where a point is wider or narrower than both neighbours, never past the points either side, points on one line kept on it. The outline samples straight runs between width points closely enough to follow the curve to the drawing tolerance (at most 64 samples per span and 4,096 per piece). Presets with a middle point (Lens, Pinch, Teardrop, Wave) look softer; two-point tapers are unchanged. Tests: `appearance::profile::tests::{widths_run_smoothly_through_width_points, widths_never_pass_the_points_either_side, a_step_ends_the_curve_on_each_side, widest_covers_every_width_along_the_profile}`, `stroke::width::tests::{a_straight_run_follows_the_curve_between_width_points, samples_between_width_points_are_capped}`.
 - **Stroke gradients where a variable-width stroke meets itself (#5960):** with a gradient along or across a stroke that has a width profile, where the stroke crosses itself the later part paints over the earlier one only where the two overlap, and a narrow part running close beside a wide one leaves its edge alone. Each slice of the gradient reaches as far as the stroke is wide where it sits (for a dashed stroke, as wide as it gets within the reach of a cap or dot, found in one pass along the path, so a densely flattened path costs no more per point), where it used to reach as far as the stroke is wide anywhere and paint a square of its colour over the wider part. Strokes without a profile are unchanged. Tests: `stroke::tests_gradient::a_narrow_pass_over_a_wide_one_paints_only_where_they_overlap`, `a_narrow_pass_beside_a_wide_one_leaves_its_edge_alone`, `a_densely_flattened_dashed_pass_beside_a_wide_one_leaves_its_edge_alone` and `widest_ahead_is_the_widest_within_the_window`, with the existing coverage tests (joins, caps, arrowheads, profiles, dashes, aligned strokes).
 - **Width strokes zoomed out (#995):** a stroke with a width profile keeps its shape while the view zooms out. The canvas keeps a hairline visible (at least half a device pixel); for a profiled stroke it is the profile's widest point that gets that minimum, not the weight, so a 1 pt stroke with a 6x width point is no longer drawn twice as thick at 25% zoom than at 100%. Plain strokes are unchanged. Test: `render::tests::widthzoom`.
+- **Ruler double-click (#5239):** a double-click (both clicks on that ruler) on the top ruler adds a vertical guide at the pointer's x and one on the left ruler a horizontal guide at its y (swapped in a view turned 90°, where the rulers read the other document axis; the nearer axis in between), through `guide.add` in one undo step; the guide is not snapped, is shown even when guides were hidden, and is an artboard guide with the Artboard tool, as a drag from a ruler makes one. The [public page on rulers](https://helpx.adobe.com/illustrator/desktop/measure-and-align/grids-and-guides/use-rulers.html) doesn't describe the gesture, so it follows the request in #5239. egui frame tests cover both rulers, a lone click, Undo, a canvas click before a ruler click, and rotated views.
 - **Rulers (#1212):** drag the intersection to preview and set a document zero point, or double-click it to reset to the active artboard's top-left. Transform, Properties and Control X/Y fields measure from it and convert entered positions back to absolute command coordinates. The origin survives every native format version and compression; geometry, guides and patterns stay in place. Public reference: [Use rulers](https://helpx.adobe.com/ca/illustrator/desktop/measure-and-align/grids-and-guides/use-rulers.html).
 - **Global and artboard rulers:** View › Rulers › Change to Global / Artboard Rulers (Cmd+Alt+R, `view.globalRulers`). A new document has artboard rulers: the rulers and the Transform, Properties, Control and Info X/Y count from the active artboard's top-left corner, or the zero point dragged out for that artboard, which moves with it; with global rulers one document zero point serves every artboard. Guide readouts and Shift ruler-tick snapping follow the same zero point. The mode is saved with the document; files from before it open with global rulers, as they measured. Regression tests: `engine/tests/it/ruler_origin.rs`, `ui-egui/src/tests/ruler_origin.rs`, `tools/src/rulerguide.rs`. Public reference: [About rulers](https://helpx.adobe.com/illustrator/desktop/measure-and-align/grids-and-guides/about-rulers.html).
 - **Video display options (#2849):** Artboard Options' Show Video Safe Areas and Video Ruler Pixel Aspect Ratio, and View › Rulers › Show Video Rulers ([Set video display options for artboards](https://helpx.adobe.com/illustrator/desktop/create-manage-artboards/organize-manage-artboards/set-video-display-options-for-artboards.html)). Each artboard has its own (`artboard.setProps`/`artboard.new` `showVideoSafeAreas`, `videoRulerPixelAspectRatio` 0.1–10, default 1), set in one undo step and written to the native format only when on or not 1, so other documents save byte for byte as before. The help page names the safe areas without numbers; our choice is [EBU R 95](https://tech.ebu.ch/docs/r/r095.pdf)'s (note 5): the canvas outlines the action-safe area 3.5% and the title-safe (graphics-safe) area 5% in from each edge, 1 point wide and turned with the view; exports and print leave them out. Show Video Rulers (`view.videoRulers`) shows the rulers counting the active artboard in pixels from its top-left corner, whatever the ruler origin: a pixel is as many points wide as the ratio and one point tall, so a 720 × 480 pt artboard at 0.9 reads 800 × 480. Hide Video Rulers returns them to the General unit; Shift ruler-tick snapping of new guides keeps the General unit. Regression tests: `tests/panelcmds.rs` (`artboard_video_display_options_*`, `artboard_display_marks_stay_out_of_exports`), `tests/docsetup.rs` (`an_artboard_shows_its_video_safe_areas`), `canvas.rs` (`video_rulers_count_the_artboard_in_pixels_of_its_aspect_ratio`), `tests/ruler_origin.rs` (`show_video_rulers_counts_the_active_artboard_in_pixels`), `dialogs/tests.rs` (`artboard_options_show_video_display_options`).
diff --git a/docs/ui-parity.md b/docs/ui-parity.md
index a0182867c..cee195ada 100644
--- a/docs/ui-parity.md
+++ b/docs/ui-parity.md
@@ -1,6 +1,6 @@
 # UI and interaction parity
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-11 · **Change:** minor (G5: Inventory Icons built-in symbol library (four built-ins); previously minor: files that record no units open in Preferences › Units › General, #5820; previously minor: interim macOS cursor delivery, #2292; native validation pending; scores and estimates unchanged; Control bar › Snapping includes the existing Snap to Glyph and Alignment Guides toggles (#6164); scores and estimates unchanged; floating tab groups collapse into the side icon rail and opened rail panels fold back into it, #5925 in part; numeric fields step on wheel hover without taking keyboard focus, #5949; Character Styles panel: a double-click on a style's row opens its Character Style Options; the dialog keeps a fixed width and scrolls its sections, so its buttons stay on screen; Selection QoL: marquee modes and visible feedback, #5313; #3380 deletion-only review follow-up: independent survivors keep gradient placement, owned subpaths avoid discarded copies, and contracts/status/evidence are clarified; endpoint highlighting remains open; scores and estimates unchanged; Drop Shadow and glow dialogs: spinner arrows, #5367, #5368; Stroke Weight Up and Down shortcuts, #5797; Layers: Rename (`ui.rename`) opens the name field of the selected layer, group or object, #5324; Properties in Edit Artboards: Transform section above the Artboards section, #5219; scrubby labels: the Control bar's Stroke: and Opacity: links and the Properties panel's Stroke link scrub their fields, #4088; Properties: Quick Actions has Repeat Options for one selected repeat, #5181; Direct Selection: Shift-click picks several blend spine points, which drag together, #5285; Direct Selection: Cmd/Ctrl held lends the Selection tool and shows its bounding box, #3901; Join tool trims two crossing open paths and joins them at the crossing, #5844; Control bar: Paragraph: link and Align left/center/right while type is selected, #5372; shape tools: a press on the selection's centre point moves it and one in the rotate zone outside a box corner turns it, #5477; scores and estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x; Units › East Asian Type acts, with Q and Ha units; scores unchanged)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-11 · **Change:** minor (ruler double-click adds a guide at the pointer, #5239; G5: Inventory Icons built-in symbol library (four built-ins); previously minor: files that record no units open in Preferences › Units › General, #5820; previously minor: interim macOS cursor delivery, #2292; native validation pending; scores and estimates unchanged; Control bar › Snapping includes the existing Snap to Glyph and Alignment Guides toggles (#6164); scores and estimates unchanged; floating tab groups collapse into the side icon rail and opened rail panels fold back into it, #5925 in part; numeric fields step on wheel hover without taking keyboard focus, #5949; Character Styles panel: a double-click on a style's row opens its Character Style Options; the dialog keeps a fixed width and scrolls its sections, so its buttons stay on screen; Selection QoL: marquee modes and visible feedback, #5313; #3380 deletion-only review follow-up: independent survivors keep gradient placement, owned subpaths avoid discarded copies, and contracts/status/evidence are clarified; endpoint highlighting remains open; scores and estimates unchanged; Drop Shadow and glow dialogs: spinner arrows, #5367, #5368; Stroke Weight Up and Down shortcuts, #5797; Layers: Rename (`ui.rename`) opens the name field of the selected layer, group or object, #5324; Properties in Edit Artboards: Transform section above the Artboards section, #5219; scrubby labels: the Control bar's Stroke: and Opacity: links and the Properties panel's Stroke link scrub their fields, #4088; Properties: Quick Actions has Repeat Options for one selected repeat, #5181; Direct Selection: Shift-click picks several blend spine points, which drag together, #5285; Direct Selection: Cmd/Ctrl held lends the Selection tool and shows its bounding box, #3901; Join tool trims two crossing open paths and joins them at the crossing, #5844; Control bar: Paragraph: link and Align left/center/right while type is selected, #5372; shape tools: a press on the selection's centre point moves it and one in the rotate zone outside a box corner turns it, #5477; scores and estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x; Units › East Asian Type acts, with Q and Ha units; scores unchanged)
 >
 > Vector Halftone preview update (2026-11-10): temporary dot selection marks are hidden, and the bounding box stays available (#6369).
 >
@@ -51,6 +51,7 @@ Artboard Options forwards the active Artboard tool's Scale Artwork with Artboard
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-03 | minor | A double-click on a ruler adds a guide at the pointer (#5239): a vertical one on the top ruler, a horizontal one on the left ruler; scores and estimates unchanged. |
 | 2026-11-08 | minor | Style panels: a double-click on a user character style's row opens its Character Style Options (`ui.charStyleOptions`), and on a paragraph style's row its Paragraph Style Options (rename); the Character Style Options dialog keeps a fixed width and scrolls its sections in a shorter window, so OK and Cancel stay on screen. Tests `panels::text_styles::tests::double_clicking_a_character_style_row_opens_its_options` and `dialogs::char_style_options::tests::the_sections_scroll_in_a_window_shorter_than_the_general_list`. Scores and estimates unchanged. |
 | 2026-11-08 | minor | #3380, deletion only: preserve gradient placement and exact surviving geometry; consume owned subpaths with a shared original-node snapshot; consolidate status/evidence and document command/helper contracts. Compound behavior and the existing M2 status entry are retained. Endpoint highlighting remains open; scores and estimates unchanged. |
 | 2026-11-07 | minor | #3380 (deletion only): independent surviving path objects; transformed appearance, stacking, selection, cubic handles and Undo/Redo covered by `delete_path_pieces`; compound semantics retained. Endpoint highlighting remains open; scores and estimates unchanged. |
@@ -237,6 +238,7 @@ tools, never checked side by side) isn't captured row by row.
 | Snapping panel/popover consolidating the snap options (30.0) | partial | Control bar › Snapping provides quick access through existing view commands and prefs.set, including Snap to Glyph and Alignment Guides (#6164); no View › Snapping submenu. Floating-panel parity remains unverified. |
 | Customisable rotation snap angle (#973) | missing | Illustrator: Constrain Angle and construction angles only |
 | Ruler guides: drag out, select, move, delete, lock, Make/Release Guides | done | #414, #451; marquee selects unlocked ruler guides |
+| A double-click on a ruler adds a guide at the pointer: a vertical one on the top ruler, a horizontal one on the left ruler (swapped in a view turned 90°, where the rulers read the other document axis; the nearer axis in between), exactly where the pointer is (no snapping), shown even with guides hidden, one undo step (`guide.add`); both clicks of the pair must be on that ruler, and the first adds nothing. The [public page on rulers](https://helpx.adobe.com/illustrator/desktop/measure-and-align/grids-and-guides/use-rulers.html) doesn't describe this gesture, so it follows the request in #5239 | done | #5239; an artboard guide with the Artboard tool, as a drag from a ruler makes one; `canvas/tests.rs` `double_clicking_a_ruler_adds_a_guide_at_that_position`, `a_canvas_click_then_a_ruler_click_adds_no_guide`, `a_ruler_double_click_follows_a_rotated_view` |
 | Escape cancels an existing ruler-guide press, move or copy | done | Selection and Direct/Group Selection; app-input regressions cover preselected guides, document/interaction-start selection, Undo/Redo and saved state, later on-canvas motion/release and temporary borrowing from idle Pen. All eight checks and the Direct Selection Escape control passed in current full CI. [Validation evidence](target-app-parity.md#evidence-what-ships-today-by-area) |
 | Ruler origin: corner drag with preview, double-click reset to the active artboard, relative X/Y fields, native save/reopen | done | #1212; `document.setRulerOrigin`, `document.resetRulerOrigin`; geometry and command coordinates stay absolute |
 | Ruler guides as Layers rows: shown, hidden, locked and deleted with their layer; rows dragged to another layer | done | `guide.setLayer`; guides from older files go on a layer |
@@ -507,6 +509,7 @@ separate. Scores and hours unchanged. [Behavior and command details](development
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-03 | minor | A double-click on a ruler adds a guide at the pointer (#5239): a vertical one on the top ruler, a horizontal one on the left ruler; scores and estimates unchanged. |
 | 2026-11-10 | minor | Symbol libraries: Inventory Icons joins Basic Shapes, UI Frames and Map Markers as a fourth built-in library (Sword, Shield, Potion, Key, Gem; no default 9-slice). |
 | 2026-11-11 | minor | Files that record no units (PDF, EPS or `.ai` without ruler units, raster images, metafiles, Affinity files, importer plug-ins) open and revert in Preferences › Units › General instead of points; native, SVG and DXF files and `.ai`/EPS ruler units are kept (#5820). Scores and estimates unchanged. |
 | 2026-11-10 | minor | Held numeric spinner arrows keep stepping past the click timeout and stop on release (#6307). Scores and estimates unchanged. |