diff --git a/ROADMAP.md b/ROADMAP.md
index 72e123df4c..b16494387f 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -199,6 +199,8 @@ Ranked; detail and the full milestone table in [docs/roadmap.md](docs/roadmap.md
 
 ## Progress log
 
+- **2026-10-24 (M14, #4253):** The annotation quick bar remembers Keep tool selected across restarts, including unpinning. Old and malformed settings keep safe defaults; the opt-in UI control channel reads and changes the same preference. Estimates unchanged.
+
 - **2026-10-23 (M7, #4280):** Edit text names each standard stand-in font after its face (`PCEdTimesBold`, ...) instead of one shared `PCEdHelv`. Rewriting a bold paragraph whose subset lacks an accent no longer repoints the paragraphs set earlier in a regular stand-in at Times-Bold, and the editor's frame stays on the paragraph being edited. Pages saved by older builds keep their shared name and are not repaired. Estimates unchanged.
 - **2026-10-23 (M8, #3205 follow-up):** Phone-pattern redaction matches complete labelled Italian geographic numbers such as `Tel. +39 0426/123456`, with synthetic matcher and mark/apply/save/reopen coverage; unlabelled international slash numbers remain unsupported.
 - **2026-10-23 (M7, #2636 partial):** A new `PasteContent` edit pastes an added text box or image copied in the same document or another, keeping its style, picture, turns, flips and crop, as one undo step; `content_copy` drives it headlessly. A paste lands beside earlier copies (18 pt steps) and stays on the page. A pasted image reuses its picture object in its own document and after the first paste into another; there a colour profile is dropped and CMYK colours stored losslessly are turned to RGB. The desktop keys and menus follow in separate PRs. Estimates unchanged.
diff --git a/crates/automation/tests/it/automation.rs b/crates/automation/tests/it/automation.rs
index cf124f169a..9049299702 100644
--- a/crates/automation/tests/it/automation.rs
+++ b/crates/automation/tests/it/automation.rs
@@ -8911,6 +8911,34 @@ fn bookmark_list_reports_colour_and_style() {
     assert_eq!(style(&ok(&mut b, "bookmark_list", json!({ "doc": re }))["bookmarks"]), style(&set), "saved");
 }
 
+/// An editable combo box (ISO 32000-2 Table 233, Edit) takes a value that isn't one of its
+/// options, and its page appearance shows it, before and after a save; one without Edit takes
+/// only its options.
+#[test]
+fn form_fill_takes_free_text_only_in_an_editable_combo_box() {
+    let dir = workdir("editable-combo");
+    let mut a = auto(&dir);
+    let doc = ok(&mut a, "doc_open", json!({ "path": "a.pdf" }))["doc"].as_u64().unwrap();
+    let combo = |name: &str, top: f64, editable: bool| json!({ "doc": doc, "page": 1, "type": "combo", "rect": [20, top, 200, top + 22.0], "name": name, "options": ["Apple", "Banana"], "editable": editable });
+    ok(&mut a, "form_add_field", combo("fruit", 20.0, true));
+    ok(&mut a, "form_add_field", combo("veg", 60.0, false));
+    ok(&mut a, "form_fill", json!({ "doc": doc, "values": { "fruit": "Cherry" } }));
+    assert!(page_text(&mut a, doc)[0].contains("Cherry"), "the typed value is drawn");
+    let refused = err(&mut a, "form_fill", json!({ "doc": doc, "values": { "veg": "Cherry" } }));
+    assert!(matches!(&refused, ToolError::Failed(m) | ToolError::InvalidArgs(m) if m.contains("no option")), "{refused:?}");
+    // A choice from the list still works in both.
+    ok(&mut a, "form_fill", json!({ "doc": doc, "values": { "veg": "Banana" } }));
+    ok(&mut a, "doc_save", json!({ "doc": doc, "path": "filled.pdf" }));
+    let saved = ok(&mut a, "doc_open", json!({ "path": "filled.pdf" }))["doc"].as_u64().unwrap();
+    let fields = ok(&mut a, "form_fields", json!({ "doc": saved }));
+    let value = |name: &str| fields["fields"].as_array().unwrap().iter().find(|f| f["name"] == name).map(|f| f["value"].clone());
+    assert_eq!(value("fruit"), Some(json!("Cherry")), "{fields}");
+    assert_eq!(value("veg"), Some(json!("Banana")), "{fields}");
+    let text = page_text(&mut a, saved);
+    assert!(text[0].contains("Cherry") && text[0].contains("Banana"), "{text:?}");
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
 /// `page_render`'s pixels show a rubber stamp written without an appearance as the stamp its
 /// `/Name` names (ISO 32000-2 Table 184), and one with an unknown name as a grey placeholder.
 #[test]
diff --git a/crates/render/tests/it/main.rs b/crates/render/tests/it/main.rs
index 2f9af47a3b..ca9adf016e 100644
--- a/crates/render/tests/it/main.rs
+++ b/crates/render/tests/it/main.rs
@@ -5,6 +5,7 @@ mod inline_image_ei;
 mod jbig2_invariants;
 mod named_form_properties;
 mod search;
+mod separation_all;
 mod substitute_widths;
-mod type3_text_clip;
 mod tiling_cell_placement;
+mod type3_text_clip;
diff --git a/crates/render/tests/it/separation_all.rs b/crates/render/tests/it/separation_all.rs
new file mode 100644
index 0000000000..5b519e0e3a
--- /dev/null
+++ b/crates/render/tests/it/separation_all.rs
@@ -0,0 +1,145 @@
+//! Contributor-original synthetic pages for the special colourant names of a Separation colour
+//! space (ISO 32000-2 §8.6.6.4): `/All` paints every colourant of the output device at once, so
+//! on screen a tint t is the gray 1 − t whatever the alternate space and tint transform say;
+//! `/None` paints nothing; any other name goes through its alternate space.
+use pdfcraft_render::{PageRenderer, RenderConfig, RenderRequest, RenderedPage};
+use std::sync::Arc;
+
+/// A tint transform into DeviceCMYK that gives cyan: tint t → (t, 0, 0, 0). Through it a tint
+/// draws light or full cyan, never a neutral gray, so a gray result proves it was not used.
+const CYAN: &str = "<< /FunctionType 2 /Domain [0 1] /C0 [0 0 0 0] /C1 [1 0 0 0] /N 1 >>";
+
+/// A PDF of the given objects (object 1 the catalog), with a cross-reference table. Each object
+/// is its bytes: a stream's data need not be text.
+fn pdf(objects: &[Vec<u8>]) -> Vec<u8> {
+    let mut bytes = b"%PDF-1.7\n".to_vec();
+    let mut offsets = Vec::new();
+    for (i, object) in objects.iter().enumerate() {
+        offsets.push(bytes.len());
+        bytes.extend_from_slice(format!("{} 0 obj\n", i + 1).as_bytes());
+        bytes.extend_from_slice(object);
+        bytes.extend_from_slice(b"\nendobj\n");
+    }
+    let xref = bytes.len();
+    bytes.extend_from_slice(format!("xref\n0 {}\n0000000000 65535 f \n", objects.len() + 1).as_bytes());
+    for offset in offsets {
+        bytes.extend_from_slice(format!("{offset:010} 00000 n \n").as_bytes());
+    }
+    bytes.extend_from_slice(format!("trailer << /Size {} /Root 1 0 R >>\nstartxref\n{xref}\n%%EOF\n", objects.len() + 1).as_bytes());
+    bytes
+}
+
+fn stream(dict: &str, data: &[u8]) -> Vec<u8> {
+    let mut bytes = format!("<< {dict} /Length {} >>\nstream\n", data.len()).into_bytes();
+    bytes.extend_from_slice(data);
+    bytes.extend_from_slice(b"\nendstream");
+    bytes
+}
+
+/// A 300 × 100 pt page drawing `content` with `resources`, then `extra` as objects 5 onwards.
+fn page(content: &str, resources: &str, extra: &[Vec<u8>]) -> Vec<u8> {
+    let mut objects = vec![
+        b"<< /Type /Catalog /Pages 2 0 R >>".to_vec(),
+        b"<< /Type /Pages /Kids [3 0 R] /Count 1 >>".to_vec(),
+        format!("<< /Type /Page /Parent 2 0 R /MediaBox [0 0 300 100] /Contents 4 0 R /Resources {resources} >>").into_bytes(),
+        stream("", content.as_bytes()),
+    ];
+    objects.extend_from_slice(extra);
+    pdf(&objects)
+}
+
+fn render(pdf: Vec<u8>) -> RenderedPage {
+    let mut renderer = PageRenderer::new(Arc::new(pdf), RenderConfig::default());
+    let out = renderer.render(RenderRequest { page: 0, scale: 1.0, ..Default::default() });
+    assert!(out.error.is_none(), "{:?}", out.error);
+    assert_eq!((out.width, out.height), (300, 100));
+    out
+}
+
+/// The RGB of the pixel at (`x`, `y`) pt from the page's top left.
+fn rgb(out: &RenderedPage, x: usize, y: usize) -> [u8; 3] {
+    let at = (y * out.width as usize + x) * 4;
+    let pixel = out.rgba.get(at..at + 3).expect("the pixel lies on the page");
+    [pixel[0], pixel[1], pixel[2]]
+}
+
+/// `got` is the neutral gray `want`, give or take one level of rounding.
+fn assert_gray(got: [u8; 3], want: u8, what: &str) {
+    assert!(got.iter().all(|c| c.abs_diff(want) <= 1), "{what}: got {got:?}, want gray {want}");
+}
+
+/// Three boxes filled with `cs` at tints 0, 0.5 and 1, left to right.
+fn three_tints(space: &str) -> RenderedPage {
+    let content = "/CS0 cs 0 scn 0 0 100 100 re f 0.5 scn 100 0 100 100 re f 1 scn 200 0 100 100 re f";
+    render(page(content, "<< /ColorSpace << /CS0 5 0 R >> >>", &[space.as_bytes().to_vec(), CYAN.as_bytes().to_vec()]))
+}
+
+#[test]
+fn separation_all_fills_paint_the_complemented_tint_as_gray() {
+    let out = three_tints("[/Separation /All /DeviceCMYK 6 0 R]");
+    assert_gray(rgb(&out, 50, 50), 255, "tint 0 paints no colourant: white");
+    assert_gray(rgb(&out, 150, 50), 128, "tint 0.5 paints half of every colourant: 50% gray");
+    assert_gray(rgb(&out, 250, 50), 0, "tint 1 paints every colourant: black");
+}
+
+#[test]
+fn separation_all_strokes_paint_the_complemented_tint_as_gray() {
+    let content = "/CS0 CS 0.25 SCN 40 w 0 50 m 300 50 l S";
+    let out =
+        render(page(content, "<< /ColorSpace << /CS0 5 0 R >> >>", &[b"[/Separation /All /DeviceCMYK 6 0 R]".to_vec(), CYAN.as_bytes().to_vec()]));
+    assert_gray(rgb(&out, 150, 50), 191, "a stroke at tint 0.25: 75% gray");
+}
+
+#[test]
+fn separation_none_paints_nothing() {
+    // A red background, so "nothing" is told apart from white.
+    let content = "1 0 0 rg 0 0 300 100 re f /CS0 cs 0 scn 0 0 100 100 re f 0.5 scn 100 0 100 100 re f 1 scn 200 0 100 100 re f";
+    let out =
+        render(page(content, "<< /ColorSpace << /CS0 5 0 R >> >>", &[b"[/Separation /None /DeviceCMYK 6 0 R]".to_vec(), CYAN.as_bytes().to_vec()]));
+    for x in [50, 150, 250] {
+        assert_eq!(rgb(&out, x, 50), [255, 0, 0], "a /None fill at x = {x} leaves the background");
+    }
+}
+
+#[test]
+fn a_named_separation_still_paints_through_its_alternate() {
+    let out = three_tints("[/Separation /Cyan /DeviceCMYK 6 0 R]");
+    let [white, half, full] = [rgb(&out, 50, 50), rgb(&out, 150, 50), rgb(&out, 250, 50)];
+    assert_gray(white, 255, "tint 0 of a named colourant");
+    for (what, colour) in [("tint 0.5", half), ("tint 1", full)] {
+        // Cyan: red well below green and blue.
+        assert!(colour[0] < colour[1] && colour[0] < colour[2] && colour[2] > 200, "{what} of /Cyan is cyan: {colour:?}");
+    }
+    assert!(full[0] < half[0], "full cyan is deeper than half: {full:?} against {half:?}");
+}
+
+#[test]
+fn a_device_n_space_naming_all_still_paints_through_its_alternate() {
+    // §8.6.6.4 gives All its meaning in a Separation space; a DeviceN space keeps its alternate.
+    let out = three_tints("[/DeviceN [/All] /DeviceCMYK 6 0 R]");
+    let half = rgb(&out, 150, 50);
+    assert!(half[0] < half[1] && half[0] < half[2], "DeviceN [/All] at 0.5 draws its tint transform's cyan: {half:?}");
+}
+
+#[test]
+fn separation_all_images_paint_each_sample_as_the_complemented_gray() {
+    // Three 8-bit samples: tints 0, 128/255 and 1.
+    let data = [0u8, 128, 255];
+    let image =
+        stream("/Type /XObject /Subtype /Image /Width 3 /Height 1 /ColorSpace [/Separation /All /DeviceCMYK 6 0 R] /BitsPerComponent 8", &data);
+    let out = render(page("q 300 0 0 100 0 0 cm /Im Do Q", "<< /XObject << /Im 5 0 R >> >>", &[image, CYAN.as_bytes().to_vec()]));
+    assert_gray(rgb(&out, 50, 50), 255, "sample 0");
+    assert_gray(rgb(&out, 150, 50), 127, "sample 128");
+    assert_gray(rgb(&out, 250, 50), 0, "sample 255");
+}
+
+#[test]
+fn separation_all_shadings_paint_the_complemented_gray() {
+    // An axial shading from tint 0 at x = 0 to tint 1 at x = 300, painted with `sh`.
+    let shading = "<< /ShadingType 2 /ColorSpace [/Separation /All /DeviceCMYK 6 0 R] /Coords [0 0 300 0] /Function << /FunctionType 2 /Domain [0 1] /C0 [0] /C1 [1] /N 1 >> /Extend [true true] >>";
+    let out = render(page("/Sh sh", "<< /Shading << /Sh 5 0 R >> >>", &[shading.as_bytes().to_vec(), CYAN.as_bytes().to_vec()]));
+    for (x, want) in [(1usize, 254u8), (150, 128), (298, 1)] {
+        let got = rgb(&out, x, 50);
+        assert!(got.iter().all(|c| c.abs_diff(want) <= 3), "shading at x = {x}: got {got:?}, want gray near {want}");
+    }
+}
diff --git a/crates/ui-egui/src/control.rs b/crates/ui-egui/src/control.rs
index 1550d446cc..47c5b200a3 100644
--- a/crates/ui-egui/src/control.rs
+++ b/crates/ui-egui/src/control.rs
@@ -36,6 +36,8 @@
 //!   for this session without changing the saved preference. `ui.state.default_mode` reports it.
 //!   `theme=light|dark|system` changes the saved theme preference; `ui.state.theme_preference`
 //!   reports the choice and `ui.state.theme` reports the resolved light/dark colours.
+//!   `comment-tool-pinned=true|false` remembers the annotation quick bar's pin across restarts;
+//!   `ui.state.comment_tool_pinned` reports the same preference.
 //! - `ui.open {path}`: open a file. A file whose tab is already open focuses it
 //!   (`"focused": true`) instead of adding a tab; native opens report `pending: true` until
 //!   they complete and are listed in `ui.state.pending_opens`; only a failed open replies `Err`.
@@ -731,6 +733,7 @@ impl Host for crate::PdfCraftApp {
             "home": self.active.is_none(),
             "mode": format!("{:?}", self.mode),
             "default_mode": self.default_mode,
+            "comment_tool_pinned": self.comment_prefs.pinned,
             "left_panel": if self.left_open { json!(format!("{:?}", self.left)) } else { Value::Null },
             "tools_side": if self.docking.tools_on_right() { "right" } else { "left" },
             "right_panel": self.right.map(|r| format!("{r:?}")),
diff --git a/crates/ui-egui/src/editing.rs b/crates/ui-egui/src/editing.rs
index 7ed6e07959..1e9c0d6b7b 100644
--- a/crates/ui-egui/src/editing.rs
+++ b/crates/ui-egui/src/editing.rs
@@ -493,7 +493,7 @@ impl PdfCraftApp {
                 && committed.as_ref().is_some_and(|draft| draft.name == focus.name)
                 && let Some(field) = self.session.get(view.id).and_then(|doc| doc.form.iter().find(|field| field.name == focus.name))
             {
-                focus.text = field.value.first().cloned().unwrap_or_default();
+                focus.text = crate::forms_ui::draft_text(field);
                 focus.picked = field.value.clone();
             }
             if let Some(page) = signature_page
diff --git a/crates/ui-egui/src/forms_ui.rs b/crates/ui-egui/src/forms_ui.rs
index 760c0b6cb6..0d81e547ca 100644
--- a/crates/ui-egui/src/forms_ui.rs
+++ b/crates/ui-egui/src/forms_ui.rs
@@ -4,7 +4,8 @@
 //! cancels, Tab moves to the next field). Check boxes and radio buttons toggle on click, or on
 //! Space once Tab or a click has focused them. List boxes are directly selectable in-place on the
 //! page (clicking picks an option; Ctrl-click toggles on multi-select lists). Combo boxes open a
-//! list of their options. Every change is one undoable engine edit.
+//! list of their options; an editable one (Edit flag) also takes typed text in a box over the
+//! field. Every change is one undoable engine edit.
 
 use std::collections::HashSet;
 
@@ -89,11 +90,29 @@ fn fillable(f: &FormField) -> bool {
     !f.read_only() && !matches!(f.kind, FormFieldKind::PushButton | FormFieldKind::Signature)
 }
 
+/// Whether a combo box takes typed text as well as a choice from its list: the Edit flag
+/// (ISO 32000-2 Table 233), which only means something with Combo set.
+fn editable_combo(f: &FormField) -> bool {
+    f.kind == FormFieldKind::Combo && f.has(field_flags::EDIT)
+}
+
+/// The text a field's editor starts with: its value, or for a combo box the shown text of the
+/// option it picks (a free value typed into an editable one has no option, and shows as is).
+pub(crate) fn draft_text(f: &FormField) -> String {
+    let value = f.value.first().cloned().unwrap_or_default();
+    if f.kind == FormFieldKind::Combo
+        && let Some((_, shown)) = f.options.iter().find(|(export, _)| *export == value)
+    {
+        return shown.clone();
+    }
+    value
+}
+
 fn open_focus(f: &FormField, widget: usize) -> Focus {
     Focus {
         name: f.name.clone(),
         widget,
-        text: f.value.first().cloned().unwrap_or_default(),
+        text: draft_text(f),
         picked: f.value.clone(),
         request_focus: true,
         select_all: false,
@@ -273,6 +292,11 @@ pub(crate) fn draft_edit(focus: &Focus, form: &[FormField]) -> Option<Edit> {
     let f = form.iter().find(|f| f.name == focus.name)?;
     let value = match f.kind {
         FormFieldKind::Text if f.value.first().map(String::as_str).unwrap_or("") != focus.text => FieldValue::Text(focus.text.clone()),
+        // Typed into an editable combo box: a shown text picks its option, anything else is the
+        // value itself (the engine maps it, and refuses free text when Edit is clear).
+        FormFieldKind::Combo if editable_combo(f) && focus.text != draft_text(f) && f.value.first() != Some(&focus.text) => {
+            FieldValue::Choice(if focus.text.is_empty() { Vec::new() } else { vec![focus.text.clone()] })
+        }
         _ => return None,
     };
     Some(Edit::SetFieldValue { name: f.name.clone(), value })
@@ -288,6 +312,49 @@ pub(crate) fn commit(view: &mut DocView, form: &[FormField]) {
     }
 }
 
+/// The text box of an editable combo box, over the field. What is typed becomes the value when
+/// Enter, Tab or a click away commits it; a pick from the list still sets an option.
+#[allow(clippy::too_many_arguments)]
+fn combo_editor(ctx: &egui::Context, view: &mut DocView, form: &[FormField], f: &FormField, w: &FormWidget, rect: Rect, zoom: f32, widget: usize) {
+    let mut enter = false;
+    egui::Area::new(egui::Id::new(("form-editor", view.id.0)))
+        .fade_in(false)
+        .order(egui::Order::Foreground)
+        .fixed_pos(rect.min)
+        .constrain_to(view.viewport_rect())
+        .constrain(false)
+        .show(ctx, |ui| {
+            ui.set_min_size(rect.size());
+            let Some(fx) = view.forms.focus.as_mut() else { return };
+            let font = (field_text_size(ui.painter(), f, w, &fx.text) * zoom).clamp(3.0, 64.0);
+            // The box is pale yellow in every theme, as a text field's is (#655).
+            ui.visuals_mut().text_cursor.stroke.color = crate::edit_text_ui::caret_color_on(FIELD_FILL);
+            let te = egui::TextEdit::singleline(&mut fx.text)
+                .desired_width((rect.width() - 6.0 * zoom + 6.0).max(1.0))
+                .font(egui::FontId::proportional(font))
+                .background_color(FIELD_FILL)
+                .text_color(Color32::BLACK)
+                .margin(egui::Margin::symmetric(3, 1))
+                .id(egui::Id::new(("form-field", view.id.0, &f.name, widget)));
+            let r = ui.add_sized(rect.size(), te);
+            if std::mem::take(&mut fx.request_focus) {
+                r.request_focus();
+                // Entered with Tab: typing replaces the value.
+                if std::mem::take(&mut fx.select_all)
+                    && let Some(mut st) = egui::TextEdit::load_state(ui.ctx(), r.id)
+                {
+                    let n = fx.text.chars().count();
+                    st.cursor.set_char_range(Some(egui::text::CCursorRange::two(egui::text::CCursor::new(0), egui::text::CCursor::new(n))));
+                    st.store(ui.ctx(), r.id);
+                }
+            }
+            enter = r.lost_focus() && ui.input(|i| i.key_pressed(egui::Key::Enter));
+        });
+    if enter {
+        commit(view, form);
+    }
+}
+
 const MONTHS: [&str; 12] = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
 
 /// The date picker under a focused date field: a month of days, and a Today button under them.
@@ -695,6 +762,11 @@ pub(crate) fn overlay(
             }
         }
         FormFieldKind::Combo => {
+            // An editable combo box has a text box over the field as well as its list (ISO
+            // 32000-2 Table 233, Edit).
+            if editable_combo(f) {
+                combo_editor(ctx, view, form, f, w, rect, zoom, focus.widget);
+            }
             let resp = egui::Area::new(egui::Id::new(("form-choices", view.id.0)))
                 .order(egui::Order::Foreground)
                 .fixed_pos(rect.left_bottom() + vec2(0.0, 2.0))
diff --git a/crates/ui-egui/src/lib.rs b/crates/ui-egui/src/lib.rs
index 3513dd6fa3..e50145f8c9 100644
--- a/crates/ui-egui/src/lib.rs
+++ b/crates/ui-egui/src/lib.rs
@@ -2637,6 +2637,7 @@ impl PdfCraftApp {
         v["redact_prefs"] = self.redact_defaults.to_json();
         // Set outside json! above, which is at serde_json's macro recursion limit.
         v["hide_empty_highlight_hover"] = serde_json::Value::Bool(self.comment_prefs.hide_empty_highlight_hover);
+        v["comment_tool_pinned"] = serde_json::Value::Bool(self.comment_prefs.pinned);
         v["show_secured_notice"] = serde_json::Value::Bool(self.show_secured_notice);
         v["organize_zoom"] = serde_json::json!(self.organize_zoom);
         // Canonical names survive changes to the order of PAPERS and do not depend on UI language.
@@ -2769,6 +2770,9 @@ impl PdfCraftApp {
         if let Some(hide) = v["hide_empty_highlight_hover"].as_bool() {
             self.comment_prefs.hide_empty_highlight_hover = hide;
         }
+        if let Some(pinned) = v["comment_tool_pinned"].as_bool() {
+            self.comment_prefs.pinned = pinned;
+        }
         // Per-tool comment styles (#340): each field goes through its clamping setter, so a
         // malformed or hostile entry is clamped or ignored rather than trusted.
         if let Some(styles) = v["comment_styles"].as_array() {
@@ -3111,6 +3115,13 @@ impl PdfCraftApp {
                 };
             }
             ("author", _) => self.comment_prefs.author = value.to_string(),
+            ("comment-tool-pinned", _) => {
+                self.comment_prefs.pinned = match value {
+                    "true" => true,
+                    "false" => false,
+                    _ => return Err("comment-tool-pinned must be true or false".into()),
+                };
+            }
             ("hide-empty-highlight-hover", _) => {
                 self.comment_prefs.hide_empty_highlight_hover = match value {
                     "true" => true,
diff --git a/crates/ui-egui/tests/it/comment_pin.rs b/crates/ui-egui/tests/it/comment_pin.rs
new file mode 100644
index 0000000000..af9f802049
--- /dev/null
+++ b/crates/ui-egui/tests/it/comment_pin.rs
@@ -0,0 +1,161 @@
+//! The annotation quick bar's pin is a preference, including across older settings files.
+
+use egui::{Pos2, pos2};
+use egui_kittest::{Harness, kittest::Queryable};
+use pdfcraft_ui_egui::{PdfCraftApp, QuickTool, comments::CommentTool};
+use serde_json::{Value, json};
+
+// Contributor-original blank page: no document assets or fonts are needed.
+const PDF: &[u8] = b"%PDF-1.7
+1 0 obj << /Type /Catalog /Pages 2 0 R >> endobj
+2 0 obj << /Type /Pages /Kids [3 0 R] /Count 1 >> endobj
+3 0 obj << /Type /Page /Parent 2 0 R /MediaBox [0 0 300 200] >> endobj
+xref
+0 4
+0000000000 65535 f\r
+0000000009 00000 n\r
+0000000058 00000 n\r
+0000000115 00000 n\r
+trailer << /Size 4 /Root 1 0 R >>
+startxref
+186
+%%EOF";
+
+/// Start a fresh shell with the state a previous process saved.
+fn harness(saved: Option<String>) -> Harness<'static, PdfCraftApp> {
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(move |_cc| {
+        let mut app = PdfCraftApp::new();
+        if let Some(saved) = saved {
+            app.restore(&saved);
+        }
+        app.set_option("language", "en").unwrap();
+        app.set_option("author", "Tester").unwrap();
+        app.open_bytes("pin.pdf", None, PDF.to_vec()).unwrap();
+        app.set_option("left", "closed").unwrap();
+        app.set_option("quick", "callout").unwrap();
+        app
+    });
+    crate::support::wait_until(&mut h, "the blank page", |app| app.views[0].page_screen_rect(0).is_some() && !app.render_pending());
+    h
+}
+
+/// Place and post a callout at known PDF coordinates, independently of panel and zoom changes.
+fn callout(h: &mut Harness<'static, PdfCraftApp>, y: f32) {
+    let r = h.state().views[0].page_screen_rect(0).unwrap();
+    let at = |x: f32| -> Pos2 { pos2(r.left() + x / 300.0 * r.width(), r.top() + (200.0 - y) / 200.0 * r.height()) };
+    h.hover_at(at(40.0));
+    h.run_steps(1);
+    h.drag_at(at(40.0));
+    h.run_steps(1);
+    h.hover_at(at(140.0));
+    h.run_steps(1);
+    h.drop_at(at(140.0));
+    h.run_steps(3);
+    h.query_all_by(|node| node.placeholder() == Some("Type text")).next().unwrap().type_text("Remember this");
+    h.run_steps(2);
+    h.get_by_label("Post").click();
+    h.run_steps(3);
+}
+
+/// Optional private visual evidence, kept outside the repository by the test runner.
+fn shot(h: &mut Harness<'static, PdfCraftApp>, name: &str) {
+    if let Ok(dir) = std::env::var("PDFCRAFT_PIN_SHOTS") {
+        h.render().unwrap().save(std::path::Path::new(&dir).join(name)).unwrap();
+    }
+}
+
+#[test]
+fn pin_from_quick_bar_survives_restart_and_unpinning() {
+    let _gpu = crate::gpu();
+    let mut h = harness(None);
+    h.get_by_label("Keep tool selected").click();
+    h.run_steps(3);
+    assert!(h.state().comment_prefs.pinned);
+    let doc = h.state().session.get(h.state().views[0].id).unwrap();
+    assert!(doc.repair_log().is_empty(), "the synthetic page opens without repair");
+    assert_eq!(doc.bytes.as_slice(), PDF, "changing this preference leaves the PDF unchanged");
+    assert!(!doc.dirty);
+    let saved = h.state().persist();
+    drop(h);
+
+    let mut h = harness(Some(saved));
+    assert!(h.state().comment_prefs.pinned, "the pin survives a fresh shell");
+    h.get_by_label("Keep tool selected: on");
+    shot(&mut h, "pin-restored.png");
+    callout(&mut h, 140.0);
+    crate::support::wait_until(&mut h, "the pinned callout", |app| app.session.get(app.views[0].id).unwrap().info.annotations.len() == 1);
+    assert!(matches!(h.state().quick_tool, QuickTool::Comment(CommentTool::Callout)), "the restored pin keeps the tool selected after use");
+
+    h.get_by_label("Keep tool selected: on").click();
+    h.run_steps(3);
+    assert!(!h.state().comment_prefs.pinned);
+    shot(&mut h, "pin-disabled.png");
+    let saved = h.state().persist();
+    callout(&mut h, 60.0);
+    crate::support::wait_until(&mut h, "the unpinned callout returning to Select", |app| {
+        app.session.get(app.views[0].id).unwrap().info.annotations.len() == 2 && matches!(app.quick_tool, QuickTool::Select)
+    });
+    assert!(!matches!(h.state().quick_tool, QuickTool::Comment(_)), "unpinning restores one-shot use");
+
+    let mut restored = PdfCraftApp::new();
+    restored.comment_prefs.pinned = true;
+    restored.restore(&saved);
+    assert!(!restored.comment_prefs.pinned, "unpinning survives the next restart too");
+}
+
+#[test]
+fn saved_pin_round_trips_both_boolean_values() {
+    for pinned in [true, false] {
+        let mut app = PdfCraftApp::new();
+        app.comment_prefs.pinned = pinned;
+        let saved = app.persist();
+        let value: Value = serde_json::from_str(&saved).unwrap();
+        assert_eq!(value["comment_tool_pinned"], json!(pinned));
+        let mut restored = PdfCraftApp::new();
+        restored.comment_prefs.pinned = !pinned;
+        restored.restore(&saved);
+        assert_eq!(restored.comment_prefs.pinned, pinned);
+        assert!(matches!(restored.quick_tool, QuickTool::Select), "remembering the pin does not select a drawing tool at startup");
+    }
+}
+
+#[test]
+fn restoring_explicit_pin_choice_overrides_current_choice() {
+    for pinned in [true, false] {
+        let mut app = PdfCraftApp::new();
+        app.comment_prefs.pinned = !pinned;
+        app.restore(&json!({"comment_tool_pinned": pinned}).to_string());
+        assert_eq!(app.comment_prefs.pinned, pinned);
+    }
+}
+
+#[test]
+fn legacy_settings_keep_the_default_and_other_preferences() {
+    let mut app = PdfCraftApp::new();
+    assert!(!app.comment_prefs.pinned);
+    let legacy = r#"{"author":"Legacy reviewer","comment_styles":[{"tool":"comment.line","color":[0.25,0.5,1.0]}]}"#;
+    app.restore(legacy);
+    assert!(!app.comment_prefs.pinned, "old settings retain the default one-shot behavior");
+    assert_eq!(app.comment_prefs.author, "Legacy reviewer");
+    assert_eq!(app.comment_prefs.style(CommentTool::Line).color, [0.25, 0.5, 1.0]);
+    app.comment_prefs.pinned = true;
+    app.restore(legacy);
+    assert!(app.comment_prefs.pinned, "a partial restore without this key leaves the current choice alone");
+}
+
+#[test]
+fn malformed_pin_values_preserve_the_current_choice() {
+    for pinned in [false, true] {
+        let mut app = PdfCraftApp::new();
+        app.comment_prefs.pinned = pinned;
+        for value in [json!(null), json!(0), json!(1), json!(-1), json!("true"), json!("false"), json!([]), json!({})] {
+            app.restore(&json!({"comment_tool_pinned": value, "author": "Still restored"}).to_string());
+            assert_eq!(app.comment_prefs.pinned, pinned, "invalid pin value: {value}");
+            assert_eq!(app.comment_prefs.author, "Still restored", "other valid preferences still restore");
+        }
+        for invalid in ["", "{", r#"{"comment_tool_pinned":true"#, "[]", "null", "false", "0"] {
+            app.restore(invalid);
+            assert_eq!(app.comment_prefs.pinned, pinned);
+        }
+    }
+}
diff --git a/crates/ui-egui/tests/it/control.rs b/crates/ui-egui/tests/it/control.rs
index 1ffd9a4432..7099ece40b 100644
--- a/crates/ui-egui/tests/it/control.rs
+++ b/crates/ui-egui/tests/it/control.rs
@@ -88,6 +88,25 @@ fn ok(h: &mut Harness<'static, PdfCraftApp>, c: &ControlClient, method: &str, pa
     call(h, c, method, params).unwrap_or_else(|e| panic!("{method}: {e}"))
 }
 
+#[test]
+fn comment_pin_is_reported_and_persistent() {
+    let (mut h, c) = harness();
+    assert_eq!(ok(&mut h, &c, "ui.state", json!({}))["comment_tool_pinned"], false);
+    for pinned in [true, false] {
+        ok(&mut h, &c, "ui.set", json!({"key":"comment-tool-pinned","value":pinned}));
+        assert_eq!(ok(&mut h, &c, "ui.state", json!({}))["comment_tool_pinned"], pinned);
+        let mut restored = PdfCraftApp::new();
+        restored.comment_prefs.pinned = !pinned;
+        restored.restore(&h.state().persist());
+        assert_eq!(restored.comment_prefs.pinned, pinned);
+        for invalid in [json!("yes"), json!(1), json!(null), json!([]), json!({})] {
+            assert!(call(&mut h, &c, "ui.set", json!({"key":"comment-tool-pinned","value":invalid})).is_err());
+            assert_eq!(ok(&mut h, &c, "ui.state", json!({}))["comment_tool_pinned"], pinned);
+        }
+        assert_eq!(ok(&mut h, &c, "ui.state", json!({}))["documents"][0]["dirty"], false);
+    }
+}
+
 #[test]
 fn thumbnail_size_is_settable_and_inspectable_through_the_control_channel() {
     let (mut h, c) = harness();
diff --git a/crates/ui-egui/tests/it/forms.rs b/crates/ui-egui/tests/it/forms.rs
index a06d474e83..436792553a 100644
--- a/crates/ui-egui/tests/it/forms.rs
+++ b/crates/ui-egui/tests/it/forms.rs
@@ -1423,6 +1423,95 @@ fn mode_tabs_keep_the_hand_over_a_text_field_scrolled_under_them() {
     assert_eq!(h.state().mode, pdfcraft_ui_egui::Mode::Convert, "the tab takes the click, not the field's editor");
 }
 
+/// Two combo boxes of Apple and Banana: `fruit` editable (Combo and Edit, ISO 32000-2 Table 233),
+/// `veg` a drop-down list only.
+fn combo_form() -> Vec<u8> {
+    pdf_from_objects(&[
+        "<< /Type /Catalog /Pages 2 0 R /AcroForm << /Fields [4 0 R 6 0 R] /DA (/Helv 0 Tf 0 g) /DR << /Font << /Helv 5 0 R >> >> >> >>",
+        "<< /Type /Pages /Kids [3 0 R] /Count 1 /MediaBox [0 0 300 400] >>",
+        "<< /Type /Page /Parent 2 0 R /Annots [4 0 R 6 0 R] >>",
+        "<< /Type /Annot /Subtype /Widget /FT /Ch /T (fruit) /Ff 393216 /Opt [(Apple) (Banana)] /Rect [20 350 280 372] /P 3 0 R /F 4 >>",
+        "<< /Type /Font /Subtype /Type1 /BaseFont /Helvetica /Encoding /WinAnsiEncoding >>",
+        "<< /Type /Annot /Subtype /Widget /FT /Ch /T (veg) /Ff 131072 /Opt [(Apple) (Banana)] /Rect [20 300 280 322] /P 3 0 R /F 4 >>",
+    ])
+}
+
+fn combo_harness() -> Harness<'static, PdfCraftApp> {
+    let mut h = Harness::builder().with_size(egui::vec2(1400.0, 900.0)).build_eframe(|_cc| {
+        let mut app = PdfCraftApp::new();
+        app.set_option("language", "en").unwrap();
+        app.open_bytes("combo.pdf", None, combo_form()).unwrap();
+        app.set_option("left", "closed").unwrap();
+        app.set_option("zoom", "150").unwrap();
+        app
+    });
+    crate::support::settle(&mut h);
+    h
+}
+
+/// An editable combo box takes a typed value that isn't among its options, and still takes a
+/// pick from its list; the typed value is what Save writes.
+#[test]
+fn an_editable_combo_box_takes_a_typed_value() {
+    let dir = scratch("editable-combo");
+    let out = dir.join("saved.pdf");
+    let mut h = combo_harness();
+    click_field(&mut h, "fruit", 0);
+    assert_eq!(focused(&h), Some(("fruit".into(), 0)));
+    h.event(egui::Event::Text("Cherry".into()));
+    h.run_steps(2);
+    h.key_press(egui::Key::Enter);
+    h.run_steps(4);
+    assert_eq!(value(&h, "fruit"), ["Cherry"], "Enter commits the typed value");
+    assert!(h.state().views[0].forms.focus.is_none(), "and closes the field");
+    // Reopened, it shows the typed value, and the list still picks an option.
+    click_field(&mut h, "fruit", 0);
+    assert_eq!(h.state().views[0].forms.focus.as_ref().map(|f| f.text.as_str()), Some("Cherry"));
+    h.get_by_label("Banana").click();
+    h.run_steps(4);
+    assert_eq!(value(&h, "fruit"), ["Banana"], "a pick from the list");
+    // Typed again, Tab commits it, and Save writes it.
+    click_field(&mut h, "fruit", 0);
+    h.key_press_modifiers(egui::Modifiers::COMMAND, egui::Key::A);
+    h.event(egui::Event::Text("Damson".into()));
+    h.run_steps(2);
+    h.key_press(egui::Key::Tab);
+    h.run_steps(4);
+    assert_eq!(value(&h, "fruit"), ["Damson"], "Tab commits the typed value");
+    h.state_mut().save_override = Some(out.to_string_lossy().into_owned());
+    h.key_press_modifiers(egui::Modifiers::COMMAND, egui::Key::S);
+    wait_for_file(&mut h, &out);
+    assert_eq!(saved_value(&out, "fruit"), ["Damson"]);
+    // Undo takes the typing back as one step.
+    h.state_mut().undo();
+    h.run_steps(2);
+    assert_eq!(value(&h, "fruit"), ["Banana"]);
+    let _ = std::fs::remove_dir_all(&dir);
+}
+
+/// A combo box without the Edit flag is a drop-down list only: typing changes nothing.
+#[test]
+fn a_combo_box_without_edit_takes_no_typing() {
+    let mut h = combo_harness();
+    click_field(&mut h, "veg", 0);
+    assert_eq!(focused(&h), Some(("veg".into(), 0)));
+    h.event(egui::Event::Text("Cherry".into()));
+    h.run_steps(2);
+    assert_eq!(h.state().views[0].forms.focus.as_ref().map(|f| f.text.as_str()), Some(""), "no text box took the typing");
+    h.key_press(egui::Key::Enter);
+    h.run_steps(2);
+    h.key_press(egui::Key::Tab);
+    h.run_steps(4);
+    assert!(value(&h, "veg").is_empty(), "nothing typed reaches the field");
+    // Tab went on to `fruit`, whose open list covers `veg`: close it first.
+    h.key_press(egui::Key::Escape);
+    h.run_steps(2);
+    click_field(&mut h, "veg", 0);
+    h.get_by_label("Apple").click();
+    h.run_steps(4);
+    assert_eq!(value(&h, "veg"), ["Apple"], "its list still picks");
+}
+
 /// A button script's `ShowHideFileAttachment` opens the attachments panel, and running it again
 /// closes it.
 #[test]
diff --git a/crates/ui-egui/tests/it/main.rs b/crates/ui-egui/tests/it/main.rs
index 0e543a7888..b49642fe04 100644
--- a/crates/ui-egui/tests/it/main.rs
+++ b/crates/ui-egui/tests/it/main.rs
@@ -29,6 +29,7 @@ mod camera;
 mod column_select;
 mod combine_grid;
 mod commands;
+mod comment_pin;
 mod comments;
 mod compare;
 mod content;
diff --git a/docs/development.md b/docs/development.md
index 1142fed333..e50907ba56 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -28,6 +28,24 @@ the low-disk artifacts, run `cargo clean --profile low-disk`.
 Building PdfCraft requires Rust 1.95 or later: the UI crate and its `egui` and `craft-ui`
 dependencies need it, and the workspace `rust-version` states the same minimum.
 
+## Annotation tool pin
+
+The annotation quick bar's **Keep tool selected** pin is a shared preference, stored as the
+boolean `comment_tool_pinned`. It survives application restarts, including when switched off.
+Startup uses Select; the remembered pin applies when an annotation tool is picked. Older settings
+without the key keep the default one-shot behavior. Non-boolean values are ignored, preserving
+the current choice and the other valid settings.
+
+The existing opt-in UI control channel uses the same preference:
+
+```sh
+pdfcraft-cli ui --control /path/to/control.json set key=comment-tool-pinned value=true
+pdfcraft-cli ui --control /path/to/control.json state
+```
+
+`ui.state.comment_tool_pinned` reports the boolean. `ui.set` accepts `true` or `false` and refuses
+other values before changing the preference. This changes interface settings only.
+
 ## Interface appearance
 
 Display theme saves System, Light or Dark separately from the palette currently drawn. New
diff --git a/parity/acrobat-features.toml b/parity/acrobat-features.toml
index 85eda3935a..a0636a6a53 100644
--- a/parity/acrobat-features.toml
+++ b/parity/acrobat-features.toml
@@ -3934,6 +3934,18 @@ tools = []
 evidence = ["crates/ui-egui/tests/it/comments.rs::make_current_properties_default", "crates/ui-egui/tests/it/comments.rs::properties_dialog_makes_the_strikethrough_colour_default"]
 notes = "colour, opacity and line width become the tool's defaults (canvas and Comments panel menus, and Acrobat's Make Properties Default box in Comment Properties, applied on OK with the edited look) and survive a restart: the per-tool styles are persisted with the settings and restored through their clamping setters (#340)"
 
+[[feature]]
+id = "comment.keep-tool-selected"
+title = "Keep annotation tools selected between uses and restarts"
+area = "E"
+tier = "P2"
+milestone = "M14"
+status = "shipped"
+commands = ["comment.line"]
+tools = []
+evidence = ["crates/ui-egui/tests/it/comment_pin.rs::pin_from_quick_bar_survives_restart_and_unpinning", "crates/ui-egui/tests/it/comment_pin.rs::legacy_settings_keep_the_default_and_other_preferences", "crates/ui-egui/tests/it/comment_pin.rs::malformed_pin_values_preserve_the_current_choice", "crates/ui-egui/tests/it/control.rs::comment_pin_is_reported_and_persistent"]
+notes = "The annotation quick bar's shared pin survives restarts as a boolean setting (#4253); unpinning is remembered too. Old settings default to one-shot use, and malformed values keep the current choice. UI-only preference, reachable through opt-in ui.set key=comment-tool-pinned and reported by ui.state.comment_tool_pinned. Startup uses Select; the shared pin applies when an annotation tool is picked. Independent per-tool pins and restoring the active tool are outside this preference."
+
 [[feature]]
 id = "comment.author-identity"
 title = "Author name from identity preferences"
@@ -4499,8 +4511,8 @@ milestone = "M6"
 status = "shipped"
 commands = ["form.fields"]
 tools = ["form_fill"]
-evidence = ["crates/ui-egui/tests/it/forms.rs::check_boxes_radios_and_choices", "crates/forms/src/tests.rs::choices_accept_exports_or_display_text"]
-notes = "combo and list boxes, multi-select lists; editable combo boxes accept free text"
+evidence = ["crates/ui-egui/tests/it/forms.rs::check_boxes_radios_and_choices", "crates/forms/src/tests.rs::choices_accept_exports_or_display_text", "crates/ui-egui/tests/it/forms.rs::an_editable_combo_box_takes_a_typed_value", "crates/ui-egui/tests/it/forms.rs::a_combo_box_without_edit_takes_no_typing", "crates/automation/tests/it/automation.rs::form_fill_takes_free_text_only_in_an_editable_combo_box"]
+notes = "combo and list boxes, multi-select lists; an editable combo box (Edit flag) has a text box over the field as well as its list, and takes typed text on the page and through form_fill; a combo box without Edit takes only its options. No type-ahead or spell check in the typed box"
 
 [[feature]]
 id = "form.push-buttons"
diff --git a/vendor/README.md b/vendor/README.md
index 69a5f192b7..812d7df10e 100644
--- a/vendor/README.md
+++ b/vendor/README.md
@@ -17,7 +17,7 @@ Other resource categories retain their existing parent-chain lookup.
 
 | Crate | Version | Licence | Patches | Test |
 |---|---|---|---|---|
-| hayro-interpret | 0.7.0 | Apache-2.0 OR MIT | (1) select `/AP /N` appearance states via `/AS` (checkboxes, radios, stateful icons) and honour the NoView flag; (2) Type3 Unicode fallback to `/Encoding` glyph names, then printable ASCII; (3) `Type3Glyph::advance_width`; (4) `InterpreterSettings::ocg_overrides` for viewer layer toggles; (5) soft masks whose group lacks `/CS` were dropped (Chrome gradient text); (6) paint nesting cap `MAX_PAINT_NESTING` for tiling patterns and Type 3 glyphs (self-referencing content overflowed the stack); (7) CID width ranges in `/W` and `/W2` clamped to `MAX_CID` (a `0 4294967295 w` range hung); (8) `InterpreterSettings::hide_comments` skips markup annotations but keeps widgets and links (View ▸ Hide all comments); (9) `image_size_ok`: images and masks over 2^28 pixels are not decoded (a fuzzed `/W 4294967295` stencil mask allocated 4 GiB); (10) `MAX_NESTED_PAINTS`: nested paints (forms, Type 3 glyphs and tiling patterns inside one another) share a per-page budget of 50,000 (a glyph showing eight glyphs of its own font, sixteen deep, hung); (11) depends on skrifa 0.47 instead of 0.42 (upstream read-fonts fixed a Type 1 tokenizer that recursed through runs of numbers: a fuzzed font hung or overflowed the stack), with the one API change (`Charset::glyph_id` returns `Option`); (12) annotation appearances whose `/BBox` or `/Matrix` collapses to a line or a point are skipped (mapping them onto `/Rect` divided by zero and handed the device infinite or NaN matrices); (13) a Highlight annotation without a usable normal appearance is drawn from its `/QuadPoints`, `/C` and `/CA` with Multiply blending, as pdfcraft-annot draws highlights (it was not drawn at all); (14) simple-font `/Widths` (`read_widths`): entries only for codes 0–255 (one entry per code below `/FirstChar` was allocated: `4294967295` asked for 34 GB), an entry that isn't a number leaves its code missing instead of ending the array, and a `/LastChar` below `/FirstChar` gives no widths instead of discarding the font for a standard one; (15) the appearance box is mapped onto `/Rect` corner to corner: the translation now accounts for the scale (an appearance whose box didn't start at the origin and differed in size from `/Rect` was drawn shifted); (16) a clip set by `W`/`W*` takes effect after whichever path-painting operator ends the path (`S`, `f`, `B`, … as well as `n`; ISO 32000-2 §8.5.4): it was applied only on `n`, so `re W* S` clipped nothing and the clip stayed pending for a later, unrelated `n`; (17) `InterpreterSettings::cancelled`: once set, interpretation stops before the next content operator (a render pool sets it for every worker when dropped, after an edit or on closing, and for one worker when the watchdog gives up on its render, so renders whose answers nobody can receive stop instead of running to the end); (18) `MAX_PAGE_CONTENT`: the content a page holds at once (its contents, and the forms, tiling patterns and Type 3 glyph procedures being painted) stays within 512 MiB (`decode_content`; once it runs out, `InterpreterWarning::ContentTruncated` is reported (once per page by pdfcraft-render) so a truncated page is not a clean render; each level gives its bytes back when it finishes): forms nest fifty deep and each level kept its content while the next ran, so a form painting itself around a stream inflating to 256 MiB would have held over 12 GB; and Type 0 sampled functions take at most `MAX_SAMPLE_ENTRIES` (2^21) table points and `MAX_SAMPLE_VALUES` (2^23) samples, read no further than `/Size` asks (256 MiB of 1-bit samples asked for over 8 GB); (19) mesh shadings (types 4–7) are sampled only inside the area being drawn (`ShadingPattern::encode_within`, which the vendored hayro renderer calls with that area plus a pixel), within 8 visits per pixel of it plus 4 per triangle (`TriangleSampler`), and patches are triangulated one at a time: points far off the page were sampled over their whole bounding box, up to 65536 × 65536 entries (a fuzzed 147-byte patch stream; a synthetic page passed 6 GB in six seconds), ten thousand overlapping triangles ran for minutes, and every patch became 722 triangles before any limit; meshes hold at most `MAX_MESH_PATCHES` (2^16) patches and `MAX_MESH_TRIANGLES` (2^20) triangles, a lattice needs two to 2^19 vertices per row (`/VerticesPerRow 0` pushed empty rows for ever; one huge row read the whole stream), and a page samples at most `MAX_PAGE_MESH_TRIANGLES` (2^25) mesh triangles in all (a mesh painted a thousand times was triangulated a thousand times); each cut logs a warning; (20) PDF function construction is limited to 64 levels and 10,000 total nodes with cycle detection; calculator parsing and evaluation share procedure depth/work budgets, integer division/bitshift/rotation/index are panic-free, and fixed-size stack errors propagate; (21) a Type 0 font drawn with a substitute that isn't CID-keyed (it isn't embedded, or its program doesn't load) draws `.notdef` for a CID of an Adobe character collection (Japan1, GB1, CNS1, Korea1) that it can't find by Unicode: hayro took the CID for a glyph index of the substitute, which numbers its glyphs its own way, so the character was drawn as an unrelated one (𠮷 as "Ｑ" in BIZ UDPGothic); (22) a Type 0 font drawn with a substitute finds a character given with a variation selector (`/ToUnicode`, or Adobe-Japan1-UCS2, which maps the JIS X 0208 forms of the kanji JIS X 0213:2004 redrew that way: CID 1247 is 噂 U+E0100) through the substitute's variation sequences, else as the character alone: such a CID found no glyph and was drawn as an unrelated one; (23) backport of hayro 0.8's `gradient` module: `EncodedShadingPattern::as_svg_gradient` turns an axial or radial shading into stops of an sRGB gradient (within 0.01 per channel, a stop at every stitching-function bound via `Function::stitching_bounds`) when a native gradient draws it exactly (extended past the box drawn in; a radial one with no background colour); (24) `DecodedImageCache`: decoded image pixels shared across renders through the interpreter cache within a 64 MiB budget (an image-heavy page decoded its thousands of images again per tile and per scale), keyed by every decode input (`DecodedImageKey`: the stream's place and dictionary bytes, its object, mask/stencil/raster output, interpolation, decode target size, preview or final); images under a transfer function and inline images are not cached, an image over the budget is never kept, and a poisoned lock decodes uncached; (25) `Device::actual_text` hands the device a marked content sequence's `/ActualText` (inline or named in `/Properties`), so text extraction keeps the Thai, Indic and Arabic clusters Chrome marks this way (their shaped tone marks and vowels have no Unicode of their own); (26) non-embedded simple fonts drawn with a standard-font stand-in build the Latin Extended-A letters the stand-in lacks (`/Gbreve`, `/Idotaccent`, `/Scedilla`, `/aogonek`, `/ccaron`…) from the base letter and accent it has (`StandardKind::composite_glyph`, `ACCENTED_LETTERS`): PDFium's Foxit stand-ins hold only the Standard/WinAnsi/Mac Roman glyphs, so iText letters with Times New Roman unembedded showed blanks for Ğ, İ, Ş, ğ and ş; the comma-below letters (`/scommaaccent`, `/Tcommaaccent`, `/kcommaaccent`…, found by character, so `/uni0136` and the glyph list's `/Kcedilla` too) are the letter and the font's comma, smaller and under the baseline, since the stand-ins have no `commaaccent` (Romanian ș drew nothing and ț a cedilla in forms laid out from XFA; ģ, whose comma is turned and above, is not built); (27) an embedded TrueType font without a base encoding reads its codes as WinAnsi for text extraction (`EmbeddedKind::code_to_unicode_name`), matching pdftotext's output, instead of Standard: OCR text layers of scans write WinAnsi codes with no `/Encoding`, and Standard has no ü, ö or ß and reads é as Ø (glyph selection unchanged); (28) an image whose pixels hold at most 16 bits of samples (an 8-bit Separation or DeviceN image, a 1-, 2- or 4-bit gray or indexed one) is converted once per possible pixel value through a lookup table instead of once per pixel (`rgb_via_lookup`): a spot-colour tint transform is often a PostScript calculator program, run for every pixel, so a fillable character sheet's 3304 × 4105 DeviceN background took four seconds and 430 MB to draw a page; each entry is converted on its own (`convert_each`), so a tint transform giving the wrong number of components for a value the image never uses cannot shift the colours of the values it does; (29) `Device::begin_annotations`/`end_annotations` bracket the page's annotations, so a device can tell comment paints from document paints (reading colours recolour the document, never a comment, #1548); (30) the Annex D.2 alias codes read as the ink they draw: WinAnsiEncoding 0xA0 and 0xAD, and MacRomanEncoding 0xCA, carry the glyph names `space` and `hyphen` -- the names those tables also give 0x20 and 0x2D -- not `nbspace` and `sfthyphen`, whose glyph list values U+00A0 and U+00AD are invisible formatting characters. Extraction hid drawn ink behind them, so search and redaction matched neither (`XiaoBiaoSong.pdf` in the pdf.js corpus drew 104 soft hyphens; across the 989 files the soft hyphens we extract fall from 117 to 13 and the non-breaking spaces from 30 to 26, what remains coming from `/ToUnicode` maps, which say so explicitly). The base table only, in the text direction only: a `/Differences` name keeps its glyph list value and glyph lookup is untouched, both as pdftotext does; (31) a Type 0 sampled function keeps its samples in one flat array indexed by strides (`Type0::entry`) instead of a hash map keyed by each grid point: the map was built again, one hashed insert per sample, every time a shading using the function was painted (a 2,097,152-sample ramp painted 30 times took 38 s; `bug1721218` in the pdf.js corpus spent most of a 1.5 s page on it); the interpolation is unchanged, so results are bit for bit the same, a sample missing from a short stream still gives no value, and the maximum sample value is computed without overflowing at 32 bits per sample; (32) the decoded-image cache (24) keys a decode by the size the image is drawn at only when a JPX stream decodes it or its soft mask or mask (`decode_reads_target`): JPX is the only filter that decodes a reduced resolution for a size, so a JPEG or Flate scan was decoded again at every zoom step and kept once per zoom level; one decode now serves every size; `InterpreterCache::decoded_image_decodes` counts the cache's decodes; (33) Coons and tensor-product patches copy their vertices' colours less: each point of a patch's 20 × 20 triangle grid is interpolated once (`generate_patch_triangles`; each cell interpolated its four corners itself, 1,444 interpolations a patch for 400 points), a cell's second triangle takes the vertices its first copied, and the mesh sampler moves a patch's triangles into device space instead of copying each vertex (`TriangleSampler::sample_owned`); the same values, 10–16% faster on mesh-gradient pages; (34) `color::tint_transform_runs`: how many colours the calling thread has run through a Separation or DeviceN tint transform (counted once per batch in `convert_f32`), so a test counts patch (28)'s once-per-sample-value runs instead of timing them (its 10 s deadline failed on a busy FreeBSD VM in CI); (35) `EncodedShadingPattern::extent`: where a mesh shading (types 4–7) can paint at all, the pixels its triangles touched when it was encoded (`None` for the types that paint everywhere, and when the shading has a `/Background`), so the renderer samples a texture there alone and skips a mesh with nothing on the canvas; (36) a mesh shading's pixel whose corner no triangle holds strictly (on an edge two triangles share, or on the mesh's side) takes the triangle that covers its centre, edges included (`Triangle::covers`): testing only the corner left a white seam along every shared edge, and the colour is still taken at the corner; (38) the `/DefaultGray`, `/DefaultRGB` and `/DefaultCMYK` colour spaces of a resource dictionary (ISO 32000-2 §8.6.5.6) replace the device space content selects: with `g`/`G`, `rg`/`RG`, `k`/`K` and `cs`/`CS` (by name, or through a `/ColorSpace` resource that is a device space), and as the `/ColorSpace` of an image XObject, an inline image or a shading painted by `sh` or as a shading pattern (`DefaultColorSpaces`, looked up once per content window in the resources and those they inherit, so a form XObject without a default of its own draws in its page's, as Poppler and MuPDF draw it); a default that is a Lab, Indexed, Pattern or device space, has another number of components or is no colour space is ignored and device colour is drawn as before; device spaces inside other spaces (an Indexed base, a Separation or DeviceN alternate, a Pattern's underlying space), shading dictionaries, masks and transparency group spaces are unchanged, and the decoded-image cache (24) keys a decode by the default it was drawn in. hayro drew device colour as it was, so pages that calibrate it this way (common in PDF/A) came out in the wrong colours; (39) knockout groups (#2971): `Device::set_knockout` right after a `/K true` group is pushed; `Device::knockout_image` for an unmasked image before its group is pushed, when `Device::in_knockout_group`: the device clears its placement rectangle only if it will draw the image (on the canvas, not a preview's tiny image, and it decodes), decoded at its draw size so the draw reuses that decode; and, when `Device::knockout_erase_wanted`, a nested group's content drawn once between `begin_knockout_erase` and `end_knockout_erase` before the group itself, which then always gets a layer of its own; (40) an optional content membership dictionary's visibility expression (`/VE`: `/And`, `/Or`, `/Not`, nested up to 32 deep) decides its visibility ahead of `/OCGs` and `/P` (ISO 32000-2 §8.11.2.2); it was ignored, so content under it stayed visible with its layers hidden; a malformed expression, including one naming an object the document doesn't list in `/OCProperties /OCGs`, falls back to `/OCGs` and `/P` (#2986); (41) a transparency group that is neither isolated nor knockout, entered at full opacity with no soft mask and Normal blending, is drawn straight onto the page instead of into a layer of its own (§11.4.7: its elements composite with the backdrop; the layer made a `/BM /Multiply` highlight appearance an opaque block, #1968); (42) text in a Type 3 font is drawn filled whatever the text rendering mode, except mode 3 (invisible): only that mode has any effect on Type 3 fonts (ISO 32000-1 §9.3.6). Stroking ran the glyph procedure a second time, so `2 Tr` made bitmap fonts look bold, `1 Tr` painted an uncoloured glyph in the stroking colour, and `7 Tr` hid it (`7 Tr` since follows 64); (43) Lab colour spaces honour their own `/WhitePoint`: L\*a\*b\* goes to XYZ relative to that white, is Bradford-adapted to D65 and converted to sRGB (ISO 32000-2 §8.6.5.4) instead of through `LAB.icc` as if every white were D50 (a D65 blue came out 45 levels too red; the profile is removed); components normalised to [0, 1] (`manual_scale`, an `/Indexed` palette over Lab) map onto L\* 0..100 and the a\*/b\* `/Range`; (44) a Type 0 font whose `/ToUnicode` is the name `/Identity-H` or `/Identity-V` (not a CMap stream; WSCAD writes it) reads each code as its Unicode value, as Acrobat shows it (`Type0Font::identity_to_unicode`); the identity CMap the name resolved to maps codes to CIDs only, so such pages had no text to select or find; (46) an image XObject's group applies the fill opacity, so the fill alpha is reset to 1 before a stencil mask takes the fill colour as its paint, and a pattern paint drops the opacity it captured at `scn` (`Pattern::without_opacity`) (it was applied twice: a mask at `ca 0.5` was drawn at a quarter, #2975); (47) `path_as_rect`: a five-element path is a rectangle only when its four points are distinct, each step from one to the next runs along a single axis, and the last returns to the first. The length test admits one MoveTo and four LineTo as well as one MoveTo, three LineTo and a ClosePath, and asking only that every corner of the bounding box was visited says nothing about the order or the steps between, so a five-point polyline whose ends reached the corners was painted as that box -- a fourth side the path does not have -- and a clip of that shape was discarded; the coordinates are compared exactly, since the matrix is applied after this check and a `cm` of 10,000 turns `is_nearly_equal`'s 256th of a unit into tens of device units (#3327); (48) an `/ICCBased` colour space is cached by what its profile is read from (`IccProfileKey`): the stream object it names, looked up without reading the stream, and then the stream's dictionary and its own bytes (decrypted, not decoded), so a byte-for-byte copy of a profile in another object is read once, and a profile stream written directly in its array, which reports the object holding the array as every other stream written there does, is told apart by its bytes. hayro keyed it by the stream dictionary's bytes alone, so two different profiles with the same `/N` and `/Length` shared whichever was read first, and colours in the second were drawn through the first. `InterpreterCache::icc_profile_reads` counts the profiles read; (49) `OpenTypeFontBlob::new` also accepts a `post` table version 1.0, 2.0 or 3.0 written with its 16-bit halves swapped (`00 00 00 03`), as ScanSoft PDF Create! embeds every font; such fonts were refused and their text drawn with a substitute (Hebrew came out garbled or missing, #2946); `glyph_names` reads such a table from a copy with the version written correctly, so a 2.0 table's names serve `/Differences`. Any other unknown version is still refused (pdf.js 9462); (50) `CffFontBlob::glyph_index_by_name` looks a glyph name up in a name to glyph map built on first use (shared between clones) instead of searching the whole charset, with a string lookup per glyph, for every character code of a font; the first glyph with a name still wins; (51) at most 4096 graphics states saved at once, holding at most 64 MiB together (each `q` copies the whole state, dash array and clip list included, so short operators multiplied one large state); a `q` past either limit is counted but not copied, and its `Q` still removes the clips added since (from storytold/craft-libs#239); (52) a `/W2` run whose first CID is past `MAX_CID` stops there, as in `/W` (7), checked before the run's metrics are read: a first CID of 4294967295 inserted one entry and then overflowed, discarding the whole `/W2` table (from storytold/craft-libs#254); (55) a Separation or DeviceN tint transform that cannot be read keeps its colour space, and one that cannot be read or evaluated paints the alternate space's initial colour, as evaluation failures already did; that fallback, and a `cs`/`CS` colour space that cannot be read (drawn in DeviceGray as before), are now reported once per content stream as `InterpreterWarning::ColorFallback` (`RenderWarning::ColourFallback` in `pdfcraft-render`) instead of silently (#4260); (56) an annotation whose Invisible flag (bit 1) is set and whose `/Subtype` is none of the standard types of ISO 32000-2 Table 171 (`is_standard_annotation_type`; no `/Subtype` counts as unknown) is not drawn (Table 167), and a `/Popup` annotation's appearance is never painted on the page (§12.5.6.14: a popup has no appearance stream of its own; the viewer shows it as a window for its parent annotation). Both were drawn from their `/AP`; (57) a simple font drawn with a standard-font stand-in because the document names a font it doesn't embed (`StandardKind` with `fallback`) narrows a glyph to a narrower `/Widths` advance but no longer widens it to a wider one: the advance already places the next glyph (ISO 32000-2 §9.2.4; /Widths in Table 109), and widening drew a non-embedded `Arial,Bold` with 600-unit widths as a heavy fixed-pitch face whose `i` and `l` were solid blocks twice their width; an exact standard-14 font still matches its standard metrics both ways; (58) the fallback request for a Type 0 font that is not embedded (`FallbackFontQuery::with_descriptor`) takes its serif, italic and small-cap flags, `/FontWeight`, `/FontFamily` and `/FontStretch` from the descendant CIDFont's font descriptor (ISO 32000-2 §9.7.4.1, §9.7.6.1; §9.8): it read them from the Type 0 dictionary, which has none, so every such request asked for a regular sans-serif face and no resolver could tell a Song or Mincho font from a Hei or Gothic one, or see `/FontWeight 700`; (59) the NoRotate flag (`/F` bit 5) is honoured: the appearance, fitted to `/Rect`, is turned against the page's `/Rotate` about the rectangle's upper-left corner, which stays where it is, so it reads upright as the page is displayed (ISO 32000-2 §12.5.3). Sticky notes, which are saved NoRotate, were drawn turned with the page (#2583). Form fields and links stay in `/Rect`, where PdfCraft takes their click targets from it; (64) text in a Type 3 font follows ISO 32000-2 §9.3.6 in the clipping modes: under `7 Tr` it is not rendered (reported to the device as clipping text, `GlyphDrawMode::Clip`, so extraction keeps it), and in modes 4 to 7 a Type 3 glyph adds nothing to the clipping path (`clip_glyph`), so text shown only in a Type 3 font leaves no clip at `ET`. Since (42) `7 Tr` painted the glyphs in the fill colour (black by default), so a fill meant to follow showed them wherever it didn't cover them; 4 to 6 still render filled | (1) `raster::tests::widget_appearance_states`; (2, 3) `xtask text-oracle` on corpus/pdfjs issue918; (4) `raster::tests::layer_override_hides_content`; (5) `raster::tests::soft_mask_without_group_colour_space_is_applied`; (6) `raster::tests::self_referencing_tiling_pattern_terminates`, `raster::tests::self_referencing_type3_glyph_terminates`; (7) `raster::tests::huge_cid_width_ranges_terminate`; (8) `raster::tests::hiding_comments_keeps_fields`; (9) `raster::tests::absurd_mask_and_fax_sizes_are_refused_before_decoding`; (10) `raster::tests::type3_glyphs_that_fan_out_into_themselves_finish`; (11) `raster::tests::type1_font_programs_with_long_runs_of_numbers_load_quickly`; (12) `raster::tests::degenerate_annotation_appearances_are_skipped`; (13) `raster::tests::highlights_without_an_appearance_are_drawn`; (14) `raster::tests::malformed_simple_font_widths_keep_later_widths_and_the_font`, `raster::tests::huge_simple_font_first_char_terminates`; (15) `raster::tests::annotation_appearance_box_maps_onto_rect`; (16) `raster::tests::clipping_path_applies_after_any_painting_operator`; (17) `raster::tests::dropping_the_pool_cancels_its_renders`, `raster::tests::the_watchdog_stops_the_render_it_gives_up_on`; (18) `raster::tests::page_contents_and_nested_forms_share_one_budget`, `raster::tests::content_painted_again_and_again_keeps_drawing`, `raster::tests::sampled_functions_with_billions_of_samples_are_refused`; (19) `raster::tests::mesh_shadings_far_off_the_page_render`, `raster::tests::many_overlapping_mesh_triangles_finish`, `raster::tests::mesh_shadings_with_many_patches_or_no_rows_finish`; (20) `raster::tests::function_limits_calculator_arithmetic_and_depth`, `raster::tests::function_limits_public_construction_work_and_depth`, `raster::tests::function_limits_stitching_cycles_are_refused_and_shared_children_work`, `raster::tests::function_limits_invalid_calculator_keeps_the_page_renderable`; (21) `raster::tests::cids_a_substitute_lacks_are_not_drawn_as_other_glyphs`; (22) `raster::tests::variation_sequences_draw_their_kanji_in_a_substitute`; (23) `raster::tests::axial_and_radial_shadings_draw_as_native_gradients`; (24) `raster::tests::tiles_match_full_render`, `raster::tests::skipping_paths_off_the_canvas_changes_no_pixel` (both decode through the cache), `raster::tests::decoded_images_with_identical_dictionaries_keep_their_own_pixels`, `raster::tests::decoded_images_under_a_transfer_function_are_not_shared`; (25) `text::tests::actual_text_replaces_the_glyphs_it_marks_in_every_writing_direction`, `text::tests::actual_text_follows_the_pdf_rules_for_marked_content`; (26) `raster::tests::accented_letters_the_standard_stand_ins_lack_are_built_from_their_parts`, `raster::tests::comma_below_letters_in_standard_fonts_draw_a_comma_under_the_letter`; (27) `text::tests::truetype_without_an_encoding_reads_its_codes_as_win_ansi`; (28) `raster::tests::spot_colour_images_run_their_tint_transform_once_per_sample_value`, `raster::tests::images_converted_through_a_table_keep_every_samples_colour`, `raster::tests::a_malformed_tint_for_an_unused_sample_keeps_the_used_colours`; (29) `raster::tests::reading_colors_keep_highlight_annotations_readable`; (30) `text::tests::the_annex_d2_alias_codes_read_as_an_ordinary_hyphen_and_space`; (31) `raster::tests::shadings_with_large_sampled_functions_paint_quickly`, `raster::tests::sampled_functions_interpolate_their_grid_as_before`; (32) `raster::tests::decoded_images_serve_every_size_they_are_drawn_at`; (33) `raster::tests::patch_meshes_keep_their_corner_colours`; (34) `raster::tests::spot_colour_images_run_their_tint_transform_once_per_sample_value`; (35) `mesh_extent_tests::{a_mesh_paints_its_triangles_alone, a_mesh_keeps_the_graphics_state_alpha, a_mesh_off_the_canvas_paints_nothing}` (`cargo test -p hayro`); (36) `raster::tests::mesh_triangles_sharing_an_edge_leave_no_seam`; (38) `raster::tests::default_colour_spaces::device_rgb_operators_draw_in_default_rgb`, `raster::tests::default_colour_spaces::device_cmyk_operators_draw_in_default_cmyk`, `raster::tests::default_colour_spaces::device_gray_operators_draw_in_default_gray`, `raster::tests::default_colour_spaces::device_images_draw_in_the_default_colour_spaces`, `raster::tests::default_colour_spaces::device_shadings_draw_in_the_default_colour_spaces`, `raster::tests::default_colour_spaces::an_image_drawn_with_and_without_a_default_keeps_both_colours`, `raster::tests::default_colour_spaces::forms_inherit_the_default_colour_spaces_they_do_not_override`, `raster::tests::default_colour_spaces::unusable_defaults_leave_device_colour_alone`; (39) `raster::tests::knockout_groups_replace_what_their_elements_cover`; (40) `raster::tests::visibility_expressions_decide_what_a_membership_dictionary_shows`; (41) `raster::tests::a_multiply_highlight_inside_a_transparency_group_keeps_the_text`; (42) `raster::tests::rendering_modes_but_3_and_7_draw_type3_glyphs_as_filled`; (43) `raster::tests::lab_honours_the_space_white_point`, `raster::tests::indexed_palettes_over_lab_keep_their_colours`; (44) `text::tests::identity_to_unicode_names_give_text`; (46) `raster::tests::stencil_masks_are_drawn_at_the_fill_opacity_once`; (47) `raster::tests::a_five_point_polyline_is_not_painted_as_its_bounding_box`, `raster::tests::a_path_that_visits_every_corner_out_of_order_is_not_a_rectangle`, `raster::tests::a_rectangle_is_still_painted_as_a_rectangle`; (48) `raster::tests::icc_profile_cache::icc_profiles_with_identical_dictionaries_draw_their_own_colours`, `raster::tests::icc_profile_cache::icc_profiles_used_again_are_read_once`; (49) `raster::tests::a_font_whose_post_version_has_swapped_halves_is_still_used`; (50) `font::blob::tests::glyph_names_resolve_to_the_first_glyph_with_that_name`; (51) `context::saved_state_tests::repeated_saves_stay_bounded_and_balanced`; (52) `font::cid::tests::w2_run_past_the_largest_cid_keeps_the_rest_of_the_table` (hayro-interpret); (55) `raster::tests::devicen_inks::a_tint_transform_that_cannot_be_evaluated_draws_the_rest_of_the_page_and_warns`, `raster::tests::devicen_inks::a_tint_transform_that_cannot_be_read_falls_back_and_warns`; (56) `raster::tests::invisible_unknown_annotations_and_popups_paint_nothing`; (57) `substitute_widths::a_substitute_keeps_its_glyph_shapes_at_wider_advances`, `substitute_widths::a_substitute_still_narrows_glyphs_to_narrower_advances` (pdfcraft-render `tests/it`); (58) `cid_fallback_query::a_cid_font_fallback_request_carries_its_descendants_style`, `cid_fallback_query::a_cid_font_without_a_descriptor_asks_for_the_default_style` (pdfcraft-render integration tests); (59) `raster::tests::no_rotate_notes_stay_upright_at_their_corner_on_rotated_pages` (hayro-interpret); (64) `type3_text_clip::{clip_only_type3_text_is_not_rendered_and_leaves_no_clip, invisible_type3_text_is_not_rendered, other_modes_render_type3_glyphs_filled_and_never_clip, only_outline_glyphs_shape_a_clip_shared_with_type3_text, self_nesting_type3_text_in_a_clip_mode_stays_bounded}` (`cargo test -p pdfcraft-render --test it`), `raster::tests::rendering_modes_but_3_and_7_draw_type3_glyphs_as_filled`, `text::tests::clipping_mode_type3_text_is_kept_by_the_ocr_filter` |
+| hayro-interpret | 0.7.0 | Apache-2.0 OR MIT | (1) select `/AP /N` appearance states via `/AS` (checkboxes, radios, stateful icons) and honour the NoView flag; (2) Type3 Unicode fallback to `/Encoding` glyph names, then printable ASCII; (3) `Type3Glyph::advance_width`; (4) `InterpreterSettings::ocg_overrides` for viewer layer toggles; (5) soft masks whose group lacks `/CS` were dropped (Chrome gradient text); (6) paint nesting cap `MAX_PAINT_NESTING` for tiling patterns and Type 3 glyphs (self-referencing content overflowed the stack); (7) CID width ranges in `/W` and `/W2` clamped to `MAX_CID` (a `0 4294967295 w` range hung); (8) `InterpreterSettings::hide_comments` skips markup annotations but keeps widgets and links (View ▸ Hide all comments); (9) `image_size_ok`: images and masks over 2^28 pixels are not decoded (a fuzzed `/W 4294967295` stencil mask allocated 4 GiB); (10) `MAX_NESTED_PAINTS`: nested paints (forms, Type 3 glyphs and tiling patterns inside one another) share a per-page budget of 50,000 (a glyph showing eight glyphs of its own font, sixteen deep, hung); (11) depends on skrifa 0.47 instead of 0.42 (upstream read-fonts fixed a Type 1 tokenizer that recursed through runs of numbers: a fuzzed font hung or overflowed the stack), with the one API change (`Charset::glyph_id` returns `Option`); (12) annotation appearances whose `/BBox` or `/Matrix` collapses to a line or a point are skipped (mapping them onto `/Rect` divided by zero and handed the device infinite or NaN matrices); (13) a Highlight annotation without a usable normal appearance is drawn from its `/QuadPoints`, `/C` and `/CA` with Multiply blending, as pdfcraft-annot draws highlights (it was not drawn at all); (14) simple-font `/Widths` (`read_widths`): entries only for codes 0–255 (one entry per code below `/FirstChar` was allocated: `4294967295` asked for 34 GB), an entry that isn't a number leaves its code missing instead of ending the array, and a `/LastChar` below `/FirstChar` gives no widths instead of discarding the font for a standard one; (15) the appearance box is mapped onto `/Rect` corner to corner: the translation now accounts for the scale (an appearance whose box didn't start at the origin and differed in size from `/Rect` was drawn shifted); (16) a clip set by `W`/`W*` takes effect after whichever path-painting operator ends the path (`S`, `f`, `B`, … as well as `n`; ISO 32000-2 §8.5.4): it was applied only on `n`, so `re W* S` clipped nothing and the clip stayed pending for a later, unrelated `n`; (17) `InterpreterSettings::cancelled`: once set, interpretation stops before the next content operator (a render pool sets it for every worker when dropped, after an edit or on closing, and for one worker when the watchdog gives up on its render, so renders whose answers nobody can receive stop instead of running to the end); (18) `MAX_PAGE_CONTENT`: the content a page holds at once (its contents, and the forms, tiling patterns and Type 3 glyph procedures being painted) stays within 512 MiB (`decode_content`; once it runs out, `InterpreterWarning::ContentTruncated` is reported (once per page by pdfcraft-render) so a truncated page is not a clean render; each level gives its bytes back when it finishes): forms nest fifty deep and each level kept its content while the next ran, so a form painting itself around a stream inflating to 256 MiB would have held over 12 GB; and Type 0 sampled functions take at most `MAX_SAMPLE_ENTRIES` (2^21) table points and `MAX_SAMPLE_VALUES` (2^23) samples, read no further than `/Size` asks (256 MiB of 1-bit samples asked for over 8 GB); (19) mesh shadings (types 4–7) are sampled only inside the area being drawn (`ShadingPattern::encode_within`, which the vendored hayro renderer calls with that area plus a pixel), within 8 visits per pixel of it plus 4 per triangle (`TriangleSampler`), and patches are triangulated one at a time: points far off the page were sampled over their whole bounding box, up to 65536 × 65536 entries (a fuzzed 147-byte patch stream; a synthetic page passed 6 GB in six seconds), ten thousand overlapping triangles ran for minutes, and every patch became 722 triangles before any limit; meshes hold at most `MAX_MESH_PATCHES` (2^16) patches and `MAX_MESH_TRIANGLES` (2^20) triangles, a lattice needs two to 2^19 vertices per row (`/VerticesPerRow 0` pushed empty rows for ever; one huge row read the whole stream), and a page samples at most `MAX_PAGE_MESH_TRIANGLES` (2^25) mesh triangles in all (a mesh painted a thousand times was triangulated a thousand times); each cut logs a warning; (20) PDF function construction is limited to 64 levels and 10,000 total nodes with cycle detection; calculator parsing and evaluation share procedure depth/work budgets, integer division/bitshift/rotation/index are panic-free, and fixed-size stack errors propagate; (21) a Type 0 font drawn with a substitute that isn't CID-keyed (it isn't embedded, or its program doesn't load) draws `.notdef` for a CID of an Adobe character collection (Japan1, GB1, CNS1, Korea1) that it can't find by Unicode: hayro took the CID for a glyph index of the substitute, which numbers its glyphs its own way, so the character was drawn as an unrelated one (𠮷 as "Ｑ" in BIZ UDPGothic); (22) a Type 0 font drawn with a substitute finds a character given with a variation selector (`/ToUnicode`, or Adobe-Japan1-UCS2, which maps the JIS X 0208 forms of the kanji JIS X 0213:2004 redrew that way: CID 1247 is 噂 U+E0100) through the substitute's variation sequences, else as the character alone: such a CID found no glyph and was drawn as an unrelated one; (23) backport of hayro 0.8's `gradient` module: `EncodedShadingPattern::as_svg_gradient` turns an axial or radial shading into stops of an sRGB gradient (within 0.01 per channel, a stop at every stitching-function bound via `Function::stitching_bounds`) when a native gradient draws it exactly (extended past the box drawn in; a radial one with no background colour); (24) `DecodedImageCache`: decoded image pixels shared across renders through the interpreter cache within a 64 MiB budget (an image-heavy page decoded its thousands of images again per tile and per scale), keyed by every decode input (`DecodedImageKey`: the stream's place and dictionary bytes, its object, mask/stencil/raster output, interpolation, decode target size, preview or final); images under a transfer function and inline images are not cached, an image over the budget is never kept, and a poisoned lock decodes uncached; (25) `Device::actual_text` hands the device a marked content sequence's `/ActualText` (inline or named in `/Properties`), so text extraction keeps the Thai, Indic and Arabic clusters Chrome marks this way (their shaped tone marks and vowels have no Unicode of their own); (26) non-embedded simple fonts drawn with a standard-font stand-in build the Latin Extended-A letters the stand-in lacks (`/Gbreve`, `/Idotaccent`, `/Scedilla`, `/aogonek`, `/ccaron`…) from the base letter and accent it has (`StandardKind::composite_glyph`, `ACCENTED_LETTERS`): PDFium's Foxit stand-ins hold only the Standard/WinAnsi/Mac Roman glyphs, so iText letters with Times New Roman unembedded showed blanks for Ğ, İ, Ş, ğ and ş; the comma-below letters (`/scommaaccent`, `/Tcommaaccent`, `/kcommaaccent`…, found by character, so `/uni0136` and the glyph list's `/Kcedilla` too) are the letter and the font's comma, smaller and under the baseline, since the stand-ins have no `commaaccent` (Romanian ș drew nothing and ț a cedilla in forms laid out from XFA; ģ, whose comma is turned and above, is not built); (27) an embedded TrueType font without a base encoding reads its codes as WinAnsi for text extraction (`EmbeddedKind::code_to_unicode_name`), matching pdftotext's output, instead of Standard: OCR text layers of scans write WinAnsi codes with no `/Encoding`, and Standard has no ü, ö or ß and reads é as Ø (glyph selection unchanged); (28) an image whose pixels hold at most 16 bits of samples (an 8-bit Separation or DeviceN image, a 1-, 2- or 4-bit gray or indexed one) is converted once per possible pixel value through a lookup table instead of once per pixel (`rgb_via_lookup`): a spot-colour tint transform is often a PostScript calculator program, run for every pixel, so a fillable character sheet's 3304 × 4105 DeviceN background took four seconds and 430 MB to draw a page; each entry is converted on its own (`convert_each`), so a tint transform giving the wrong number of components for a value the image never uses cannot shift the colours of the values it does; (29) `Device::begin_annotations`/`end_annotations` bracket the page's annotations, so a device can tell comment paints from document paints (reading colours recolour the document, never a comment, #1548); (30) the Annex D.2 alias codes read as the ink they draw: WinAnsiEncoding 0xA0 and 0xAD, and MacRomanEncoding 0xCA, carry the glyph names `space` and `hyphen` -- the names those tables also give 0x20 and 0x2D -- not `nbspace` and `sfthyphen`, whose glyph list values U+00A0 and U+00AD are invisible formatting characters. Extraction hid drawn ink behind them, so search and redaction matched neither (`XiaoBiaoSong.pdf` in the pdf.js corpus drew 104 soft hyphens; across the 989 files the soft hyphens we extract fall from 117 to 13 and the non-breaking spaces from 30 to 26, what remains coming from `/ToUnicode` maps, which say so explicitly). The base table only, in the text direction only: a `/Differences` name keeps its glyph list value and glyph lookup is untouched, both as pdftotext does; (31) a Type 0 sampled function keeps its samples in one flat array indexed by strides (`Type0::entry`) instead of a hash map keyed by each grid point: the map was built again, one hashed insert per sample, every time a shading using the function was painted (a 2,097,152-sample ramp painted 30 times took 38 s; `bug1721218` in the pdf.js corpus spent most of a 1.5 s page on it); the interpolation is unchanged, so results are bit for bit the same, a sample missing from a short stream still gives no value, and the maximum sample value is computed without overflowing at 32 bits per sample; (32) the decoded-image cache (24) keys a decode by the size the image is drawn at only when a JPX stream decodes it or its soft mask or mask (`decode_reads_target`): JPX is the only filter that decodes a reduced resolution for a size, so a JPEG or Flate scan was decoded again at every zoom step and kept once per zoom level; one decode now serves every size; `InterpreterCache::decoded_image_decodes` counts the cache's decodes; (33) Coons and tensor-product patches copy their vertices' colours less: each point of a patch's 20 × 20 triangle grid is interpolated once (`generate_patch_triangles`; each cell interpolated its four corners itself, 1,444 interpolations a patch for 400 points), a cell's second triangle takes the vertices its first copied, and the mesh sampler moves a patch's triangles into device space instead of copying each vertex (`TriangleSampler::sample_owned`); the same values, 10–16% faster on mesh-gradient pages; (34) `color::tint_transform_runs`: how many colours the calling thread has run through a Separation or DeviceN tint transform (counted once per batch in `convert_f32`), so a test counts patch (28)'s once-per-sample-value runs instead of timing them (its 10 s deadline failed on a busy FreeBSD VM in CI); (35) `EncodedShadingPattern::extent`: where a mesh shading (types 4–7) can paint at all, the pixels its triangles touched when it was encoded (`None` for the types that paint everywhere, and when the shading has a `/Background`), so the renderer samples a texture there alone and skips a mesh with nothing on the canvas; (36) a mesh shading's pixel whose corner no triangle holds strictly (on an edge two triangles share, or on the mesh's side) takes the triangle that covers its centre, edges included (`Triangle::covers`): testing only the corner left a white seam along every shared edge, and the colour is still taken at the corner; (38) the `/DefaultGray`, `/DefaultRGB` and `/DefaultCMYK` colour spaces of a resource dictionary (ISO 32000-2 §8.6.5.6) replace the device space content selects: with `g`/`G`, `rg`/`RG`, `k`/`K` and `cs`/`CS` (by name, or through a `/ColorSpace` resource that is a device space), and as the `/ColorSpace` of an image XObject, an inline image or a shading painted by `sh` or as a shading pattern (`DefaultColorSpaces`, looked up once per content window in the resources and those they inherit, so a form XObject without a default of its own draws in its page's, as Poppler and MuPDF draw it); a default that is a Lab, Indexed, Pattern or device space, has another number of components or is no colour space is ignored and device colour is drawn as before; device spaces inside other spaces (an Indexed base, a Separation or DeviceN alternate, a Pattern's underlying space), shading dictionaries, masks and transparency group spaces are unchanged, and the decoded-image cache (24) keys a decode by the default it was drawn in. hayro drew device colour as it was, so pages that calibrate it this way (common in PDF/A) came out in the wrong colours; (39) knockout groups (#2971): `Device::set_knockout` right after a `/K true` group is pushed; `Device::knockout_image` for an unmasked image before its group is pushed, when `Device::in_knockout_group`: the device clears its placement rectangle only if it will draw the image (on the canvas, not a preview's tiny image, and it decodes), decoded at its draw size so the draw reuses that decode; and, when `Device::knockout_erase_wanted`, a nested group's content drawn once between `begin_knockout_erase` and `end_knockout_erase` before the group itself, which then always gets a layer of its own; (40) an optional content membership dictionary's visibility expression (`/VE`: `/And`, `/Or`, `/Not`, nested up to 32 deep) decides its visibility ahead of `/OCGs` and `/P` (ISO 32000-2 §8.11.2.2); it was ignored, so content under it stayed visible with its layers hidden; a malformed expression, including one naming an object the document doesn't list in `/OCProperties /OCGs`, falls back to `/OCGs` and `/P` (#2986); (41) a transparency group that is neither isolated nor knockout, entered at full opacity with no soft mask and Normal blending, is drawn straight onto the page instead of into a layer of its own (§11.4.7: its elements composite with the backdrop; the layer made a `/BM /Multiply` highlight appearance an opaque block, #1968); (42) text in a Type 3 font is drawn filled whatever the text rendering mode, except mode 3 (invisible): only that mode has any effect on Type 3 fonts (ISO 32000-1 §9.3.6). Stroking ran the glyph procedure a second time, so `2 Tr` made bitmap fonts look bold, `1 Tr` painted an uncoloured glyph in the stroking colour, and `7 Tr` hid it (`7 Tr` since follows 64); (43) Lab colour spaces honour their own `/WhitePoint`: L\*a\*b\* goes to XYZ relative to that white, is Bradford-adapted to D65 and converted to sRGB (ISO 32000-2 §8.6.5.4) instead of through `LAB.icc` as if every white were D50 (a D65 blue came out 45 levels too red; the profile is removed); components normalised to [0, 1] (`manual_scale`, an `/Indexed` palette over Lab) map onto L\* 0..100 and the a\*/b\* `/Range`; (44) a Type 0 font whose `/ToUnicode` is the name `/Identity-H` or `/Identity-V` (not a CMap stream; WSCAD writes it) reads each code as its Unicode value, as Acrobat shows it (`Type0Font::identity_to_unicode`); the identity CMap the name resolved to maps codes to CIDs only, so such pages had no text to select or find; (46) an image XObject's group applies the fill opacity, so the fill alpha is reset to 1 before a stencil mask takes the fill colour as its paint, and a pattern paint drops the opacity it captured at `scn` (`Pattern::without_opacity`) (it was applied twice: a mask at `ca 0.5` was drawn at a quarter, #2975); (47) `path_as_rect`: a five-element path is a rectangle only when its four points are distinct, each step from one to the next runs along a single axis, and the last returns to the first. The length test admits one MoveTo and four LineTo as well as one MoveTo, three LineTo and a ClosePath, and asking only that every corner of the bounding box was visited says nothing about the order or the steps between, so a five-point polyline whose ends reached the corners was painted as that box -- a fourth side the path does not have -- and a clip of that shape was discarded; the coordinates are compared exactly, since the matrix is applied after this check and a `cm` of 10,000 turns `is_nearly_equal`'s 256th of a unit into tens of device units (#3327); (48) an `/ICCBased` colour space is cached by what its profile is read from (`IccProfileKey`): the stream object it names, looked up without reading the stream, and then the stream's dictionary and its own bytes (decrypted, not decoded), so a byte-for-byte copy of a profile in another object is read once, and a profile stream written directly in its array, which reports the object holding the array as every other stream written there does, is told apart by its bytes. hayro keyed it by the stream dictionary's bytes alone, so two different profiles with the same `/N` and `/Length` shared whichever was read first, and colours in the second were drawn through the first. `InterpreterCache::icc_profile_reads` counts the profiles read; (49) `OpenTypeFontBlob::new` also accepts a `post` table version 1.0, 2.0 or 3.0 written with its 16-bit halves swapped (`00 00 00 03`), as ScanSoft PDF Create! embeds every font; such fonts were refused and their text drawn with a substitute (Hebrew came out garbled or missing, #2946); `glyph_names` reads such a table from a copy with the version written correctly, so a 2.0 table's names serve `/Differences`. Any other unknown version is still refused (pdf.js 9462); (50) `CffFontBlob::glyph_index_by_name` looks a glyph name up in a name to glyph map built on first use (shared between clones) instead of searching the whole charset, with a string lookup per glyph, for every character code of a font; the first glyph with a name still wins; (51) at most 4096 graphics states saved at once, holding at most 64 MiB together (each `q` copies the whole state, dash array and clip list included, so short operators multiplied one large state); a `q` past either limit is counted but not copied, and its `Q` still removes the clips added since (from storytold/craft-libs#239); (52) a `/W2` run whose first CID is past `MAX_CID` stops there, as in `/W` (7), checked before the run's metrics are read: a first CID of 4294967295 inserted one entry and then overflowed, discarding the whole `/W2` table (from storytold/craft-libs#254); (55) a Separation or DeviceN tint transform that cannot be read keeps its colour space, and one that cannot be read or evaluated paints the alternate space's initial colour, as evaluation failures already did; that fallback, and a `cs`/`CS` colour space that cannot be read (drawn in DeviceGray as before), are now reported once per content stream as `InterpreterWarning::ColorFallback` (`RenderWarning::ColourFallback` in `pdfcraft-render`) instead of silently (#4260); (56) an annotation whose Invisible flag (bit 1) is set and whose `/Subtype` is none of the standard types of ISO 32000-2 Table 171 (`is_standard_annotation_type`; no `/Subtype` counts as unknown) is not drawn (Table 167), and a `/Popup` annotation's appearance is never painted on the page (§12.5.6.14: a popup has no appearance stream of its own; the viewer shows it as a window for its parent annotation). Both were drawn from their `/AP`; (57) a simple font drawn with a standard-font stand-in because the document names a font it doesn't embed (`StandardKind` with `fallback`) narrows a glyph to a narrower `/Widths` advance but no longer widens it to a wider one: the advance already places the next glyph (ISO 32000-2 §9.2.4; /Widths in Table 109), and widening drew a non-embedded `Arial,Bold` with 600-unit widths as a heavy fixed-pitch face whose `i` and `l` were solid blocks twice their width; an exact standard-14 font still matches its standard metrics both ways; (58) the fallback request for a Type 0 font that is not embedded (`FallbackFontQuery::with_descriptor`) takes its serif, italic and small-cap flags, `/FontWeight`, `/FontFamily` and `/FontStretch` from the descendant CIDFont's font descriptor (ISO 32000-2 §9.7.4.1, §9.7.6.1; §9.8): it read them from the Type 0 dictionary, which has none, so every such request asked for a regular sans-serif face and no resolver could tell a Song or Mincho font from a Hei or Gothic one, or see `/FontWeight 700`; (59) the NoRotate flag (`/F` bit 5) is honoured: the appearance, fitted to `/Rect`, is turned against the page's `/Rotate` about the rectangle's upper-left corner, which stays where it is, so it reads upright as the page is displayed (ISO 32000-2 §12.5.3). Sticky notes, which are saved NoRotate, were drawn turned with the page (#2583). Form fields and links stay in `/Rect`, where PdfCraft takes their click targets from it; (64) text in a Type 3 font follows ISO 32000-2 §9.3.6 in the clipping modes: under `7 Tr` it is not rendered (reported to the device as clipping text, `GlyphDrawMode::Clip`, so extraction keeps it), and in modes 4 to 7 a Type 3 glyph adds nothing to the clipping path (`clip_glyph`), so text shown only in a Type 3 font leaves no clip at `ET`. Since (42) `7 Tr` painted the glyphs in the fill colour (black by default), so a fill meant to follow showed them wherever it didn't cover them; 4 to 6 still render filled; (66) a Separation colour space whose colourant is the special name `All` paints every colourant at once (ISO 32000-2 §8.6.6.4): on screen and in an RGB print raster its tint t is the gray 1 − t, complemented because the device is additive, whatever its alternate space and tint transform say (hayro drew it through the tint transform, so a `/DeviceCMYK` transform giving cyan drew registration marks light cyan); `/None` still paints nothing, any other name still goes through its alternate, and a DeviceN space naming `All` keeps its alternate, since the clause gives the name that meaning in a Separation space | (1) `raster::tests::widget_appearance_states`; (2, 3) `xtask text-oracle` on corpus/pdfjs issue918; (4) `raster::tests::layer_override_hides_content`; (5) `raster::tests::soft_mask_without_group_colour_space_is_applied`; (6) `raster::tests::self_referencing_tiling_pattern_terminates`, `raster::tests::self_referencing_type3_glyph_terminates`; (7) `raster::tests::huge_cid_width_ranges_terminate`; (8) `raster::tests::hiding_comments_keeps_fields`; (9) `raster::tests::absurd_mask_and_fax_sizes_are_refused_before_decoding`; (10) `raster::tests::type3_glyphs_that_fan_out_into_themselves_finish`; (11) `raster::tests::type1_font_programs_with_long_runs_of_numbers_load_quickly`; (12) `raster::tests::degenerate_annotation_appearances_are_skipped`; (13) `raster::tests::highlights_without_an_appearance_are_drawn`; (14) `raster::tests::malformed_simple_font_widths_keep_later_widths_and_the_font`, `raster::tests::huge_simple_font_first_char_terminates`; (15) `raster::tests::annotation_appearance_box_maps_onto_rect`; (16) `raster::tests::clipping_path_applies_after_any_painting_operator`; (17) `raster::tests::dropping_the_pool_cancels_its_renders`, `raster::tests::the_watchdog_stops_the_render_it_gives_up_on`; (18) `raster::tests::page_contents_and_nested_forms_share_one_budget`, `raster::tests::content_painted_again_and_again_keeps_drawing`, `raster::tests::sampled_functions_with_billions_of_samples_are_refused`; (19) `raster::tests::mesh_shadings_far_off_the_page_render`, `raster::tests::many_overlapping_mesh_triangles_finish`, `raster::tests::mesh_shadings_with_many_patches_or_no_rows_finish`; (20) `raster::tests::function_limits_calculator_arithmetic_and_depth`, `raster::tests::function_limits_public_construction_work_and_depth`, `raster::tests::function_limits_stitching_cycles_are_refused_and_shared_children_work`, `raster::tests::function_limits_invalid_calculator_keeps_the_page_renderable`; (21) `raster::tests::cids_a_substitute_lacks_are_not_drawn_as_other_glyphs`; (22) `raster::tests::variation_sequences_draw_their_kanji_in_a_substitute`; (23) `raster::tests::axial_and_radial_shadings_draw_as_native_gradients`; (24) `raster::tests::tiles_match_full_render`, `raster::tests::skipping_paths_off_the_canvas_changes_no_pixel` (both decode through the cache), `raster::tests::decoded_images_with_identical_dictionaries_keep_their_own_pixels`, `raster::tests::decoded_images_under_a_transfer_function_are_not_shared`; (25) `text::tests::actual_text_replaces_the_glyphs_it_marks_in_every_writing_direction`, `text::tests::actual_text_follows_the_pdf_rules_for_marked_content`; (26) `raster::tests::accented_letters_the_standard_stand_ins_lack_are_built_from_their_parts`, `raster::tests::comma_below_letters_in_standard_fonts_draw_a_comma_under_the_letter`; (27) `text::tests::truetype_without_an_encoding_reads_its_codes_as_win_ansi`; (28) `raster::tests::spot_colour_images_run_their_tint_transform_once_per_sample_value`, `raster::tests::images_converted_through_a_table_keep_every_samples_colour`, `raster::tests::a_malformed_tint_for_an_unused_sample_keeps_the_used_colours`; (29) `raster::tests::reading_colors_keep_highlight_annotations_readable`; (30) `text::tests::the_annex_d2_alias_codes_read_as_an_ordinary_hyphen_and_space`; (31) `raster::tests::shadings_with_large_sampled_functions_paint_quickly`, `raster::tests::sampled_functions_interpolate_their_grid_as_before`; (32) `raster::tests::decoded_images_serve_every_size_they_are_drawn_at`; (33) `raster::tests::patch_meshes_keep_their_corner_colours`; (34) `raster::tests::spot_colour_images_run_their_tint_transform_once_per_sample_value`; (35) `mesh_extent_tests::{a_mesh_paints_its_triangles_alone, a_mesh_keeps_the_graphics_state_alpha, a_mesh_off_the_canvas_paints_nothing}` (`cargo test -p hayro`); (36) `raster::tests::mesh_triangles_sharing_an_edge_leave_no_seam`; (38) `raster::tests::default_colour_spaces::device_rgb_operators_draw_in_default_rgb`, `raster::tests::default_colour_spaces::device_cmyk_operators_draw_in_default_cmyk`, `raster::tests::default_colour_spaces::device_gray_operators_draw_in_default_gray`, `raster::tests::default_colour_spaces::device_images_draw_in_the_default_colour_spaces`, `raster::tests::default_colour_spaces::device_shadings_draw_in_the_default_colour_spaces`, `raster::tests::default_colour_spaces::an_image_drawn_with_and_without_a_default_keeps_both_colours`, `raster::tests::default_colour_spaces::forms_inherit_the_default_colour_spaces_they_do_not_override`, `raster::tests::default_colour_spaces::unusable_defaults_leave_device_colour_alone`; (39) `raster::tests::knockout_groups_replace_what_their_elements_cover`; (40) `raster::tests::visibility_expressions_decide_what_a_membership_dictionary_shows`; (41) `raster::tests::a_multiply_highlight_inside_a_transparency_group_keeps_the_text`; (42) `raster::tests::rendering_modes_but_3_and_7_draw_type3_glyphs_as_filled`; (43) `raster::tests::lab_honours_the_space_white_point`, `raster::tests::indexed_palettes_over_lab_keep_their_colours`; (44) `text::tests::identity_to_unicode_names_give_text`; (46) `raster::tests::stencil_masks_are_drawn_at_the_fill_opacity_once`; (47) `raster::tests::a_five_point_polyline_is_not_painted_as_its_bounding_box`, `raster::tests::a_path_that_visits_every_corner_out_of_order_is_not_a_rectangle`, `raster::tests::a_rectangle_is_still_painted_as_a_rectangle`; (48) `raster::tests::icc_profile_cache::icc_profiles_with_identical_dictionaries_draw_their_own_colours`, `raster::tests::icc_profile_cache::icc_profiles_used_again_are_read_once`; (49) `raster::tests::a_font_whose_post_version_has_swapped_halves_is_still_used`; (50) `font::blob::tests::glyph_names_resolve_to_the_first_glyph_with_that_name`; (51) `context::saved_state_tests::repeated_saves_stay_bounded_and_balanced`; (52) `font::cid::tests::w2_run_past_the_largest_cid_keeps_the_rest_of_the_table` (hayro-interpret); (55) `raster::tests::devicen_inks::a_tint_transform_that_cannot_be_evaluated_draws_the_rest_of_the_page_and_warns`, `raster::tests::devicen_inks::a_tint_transform_that_cannot_be_read_falls_back_and_warns`; (56) `raster::tests::invisible_unknown_annotations_and_popups_paint_nothing`; (57) `substitute_widths::a_substitute_keeps_its_glyph_shapes_at_wider_advances`, `substitute_widths::a_substitute_still_narrows_glyphs_to_narrower_advances` (pdfcraft-render `tests/it`); (58) `cid_fallback_query::a_cid_font_fallback_request_carries_its_descendants_style`, `cid_fallback_query::a_cid_font_without_a_descriptor_asks_for_the_default_style` (pdfcraft-render integration tests); (59) `raster::tests::no_rotate_notes_stay_upright_at_their_corner_on_rotated_pages` (hayro-interpret); (64) `type3_text_clip::{clip_only_type3_text_is_not_rendered_and_leaves_no_clip, invisible_type3_text_is_not_rendered, other_modes_render_type3_glyphs_filled_and_never_clip, only_outline_glyphs_shape_a_clip_shared_with_type3_text, self_nesting_type3_text_in_a_clip_mode_stays_bounded}` (`cargo test -p pdfcraft-render --test it`), `raster::tests::rendering_modes_but_3_and_7_draw_type3_glyphs_as_filled`, `text::tests::clipping_mode_type3_text_is_kept_by_the_ocr_filter`; (66) `separation_all::{separation_all_fills_paint_the_complemented_tint_as_gray, separation_all_strokes_paint_the_complemented_tint_as_gray, separation_all_images_paint_each_sample_as_the_complemented_gray, separation_all_shadings_paint_the_complemented_gray, separation_none_paints_nothing, a_named_separation_still_paints_through_its_alternate, a_device_n_space_naming_all_still_paints_through_its_alternate}` (`cargo test -p pdfcraft-render --test it`) |
 | hayro | 0.7.1 | Apache-2.0 OR MIT | (1) `RenderSettings::{x_offset, y_offset}` to render one tile of a large page; (2) images over `MAX_IMAGE_PIXELS` (2^28) are skipped (a fuzzed `/W 4294967295` hung in resampling); (3) `tiling_cell_scale` keeps a tiling pattern's cell pixmap within 3000 px a side whatever its `/XStep`/`/YStep` (a fuzzed step far beyond `/BBox` allocated 2 GB); (4) stroke widths clamped to 4 × (canvas width + height) device pixels (a fuzzed `/LW 9223372036854775807` allocated 10 GB in stroke expansion); (5) `usable_dash_pattern`: a stroke whose dash pattern could cut it into more than `MAX_DASHES_PER_STROKE` (250,000) pieces, counting kurbo's restart of the pattern at every subpath and `ClosePath`, is drawn solid (a fuzzed `/D [[11] 0]` on a line from x = 92234775807 allocated over 5 GB, `[0.000001] 0 d` on a 20 pt line over 10 GB); (6) a dash pattern with a negative or non-finite entry, or a period that isn't positive, is drawn solid (`[-1 -1] 0 d` looped for ever in kurbo); (7) `render_size` and `render_into`: render into a buffer the caller allocates (PdfCraft renders into pixel-aligned memory that the GUI takes over as texture data); `render` is `render_into` on a new pixmap; (8) checked image source/target/RGBA, alpha-premultiplication scratch and intermediate sizes before resampling, finite transforms and exact source/mask buffers; sources wider than u16 may shrink before backend limits, with a 2^20 source-axis cap and conservative 128 MiB filter-planning estimate; an over-limit or failed resize keeps the original image resolution and geometry when the source fits the backend, otherwise skips it, with a logged warning; staging, resampling output/scratch, RGBA conversion and padding buffers use fallible reserves; (9) `may_paint_canvas`: a fill or stroke whose control-point box, grown by how far its paint reaches past the path (half the stroke width times the larger of the miter limit and √2) plus 0.5 user units and 2 pixels, misses the canvas is not drawn, so a tile no longer strokes and fills every path of its page (item 5 of #623); `set_skip_offscreen_paths` turns this off for the regression test; (10) `/Interpolate` governs the pre-resize too (#624): a minified image that does not request interpolation is pre-resized with nearest-neighbour, planned without the Catmull-Rom filter limits (`image_resampling_size` takes the flag); a Type 3 glyph image is sampled bicubically only when interpolated; a minified image with a matching soft mask is nearest-sampled straight into premultiplied RGBA; (11) `may_paint_rect`: an image whose stream-size box, mapped to the device, misses the canvas is skipped before decoding (decoded data can only shrink against that box), so a tile of an image-heavy page no longer decodes, resamples and rasterizes every image on it; (12) preview renders (`InterpreterSettings::preview`: backdrops, thumbnails, grid cells, signature-drag backgrounds) skip images under `PREVIEW_MIN_IMAGE_AREA` device pixels, while final renders always draw them; (13) reading colours (#897): `RenderSettings::color_replacement` takes a `ColorReplacement` (text colour, background, `only_black`, `line_art`) that remaps solid text and line-art paint while rendering, glyph outlines counting as text and stencil-mask ink as line art; images, image alpha masks, soft masks and pattern cells keep their colours; `render_pdf` gains a `color_replacement: Option<ColorReplacement>` argument (pass `None` for true colours); the upstream-only `[dev-dependencies.log]` entry is removed from `Cargo.toml` (log is a normal dependency since the logging patch), so `cargo test -p hayro` runs this crate's unit tests; (14) a shrunk, interpolated, axis-aligned image is snapped to whole device pixels: shrunk once to its rounded device rectangle and drawn 1:1 at the rounded corner, instead of a ceil-sized raster resampled again at a fractional scale and offset (`snap_minified_image`; scans looked soft next to Acrobat); (15) a soft mask of another size than its image is filtered when shrunk, whatever its `/Interpolate` (#1649): such a mask carries the shape on its own (Word saves text as a tiny black image with a glyph-bitmap mask), and nearest-neighbour dropped every stroke thinner than the shrink factor; (16) under a soft mask or a blend mode, axial and radial shadings are sampled instead of drawn as native gradients (#2128): vello_cpu 0.0.8 copies an opaque gradient over fully covered tiles without the mask or blend mode, so PowerPoint's faded gradient fills came out solid; (17) the renderer keeps annotation paints out of the reading-colours mapping between `begin_annotations` and `end_annotations` (#1548); (18) the page renders as one transparency group; under reading colours its background is painted inside it as the initial backdrop, so a Multiply highlight blends with the dark background instead of staying an opaque block, and otherwise the background stays outside, so a blend mode over an empty part of the page keeps its colour instead of blending with the white paper (#2970); (19) `set_paint` samples a mesh shading's texture over its triangles alone (`EncodedShadingPattern::extent`, padded rather than repeated) and skips a mesh with none on the canvas: a BricsCAD plan's 310 one-triangle `sh` each covered the whole tile, 2 s per 1024 px tile at any zoom (the watchdog gave the page up on a busy machine), now about 70 ms; (20) a tiling pattern whose step is too large for a cell pixmap, where what is painted (a fill, or a stroke with its width) can only show the first cell (PowerPoint's `/XStep 2147480100` for a picture fill drawn once), has its `/BBox` drawn at full scale with a transparent border and padded instead of tiled (`shows_one_cell`; a cell whose scale isn't finite and positive, from a `/BBox` too thin to divide by, keeps the old path: `usable_cell_scale`); shrinking the cell to fit the 3000 px limit of (3) left the picture under a pixel, so network diagrams lost their pictures (#3349); (22) knockout groups: while one is innermost, fills, strokes, glyph outlines and shadings are drawn with `Compose::Copy` (weighted by coverage), so each element replaces what earlier elements of the group drew instead of compositing over it; an image or nested group, drawn into a layer of its own, first has what is under its shape cleared (`knockout_image` for an unmasked image's rectangle, only when `draw_image` will draw it, decoded at the size it is drawn; a knockout erase pass that draws a nested group's content with every paint clearing instead of painting, a shading fill's clear clipped to the shading's `/BBox` as its paint is) and then composites over it (#2971); (23) backport of hayro 0.8: shadings that `as_svg_gradient` can represent are painted as a `vello_cpu` linear or two-point radial gradient instead of a texture sampled pixel by pixel through the shading function (InDesign fades are luminosity soft masks of one full-page axial `sh`: 40 on a report page took 15 s at 144 dpi, now under 1 s); without upstream's half-pixel shift, which suits vello_cpu 0.3 but moves 0.0.8's gradients off pixel centres; (25) a tiling cell is drawn at the scale that makes one `/XStep` (`/YStep`) exactly the cell pixmap's whole number of pixels (`tiling_cell_pixels`, at least 1 and at most the cap), so the repeated pixmap puts cells at whole multiples of the step at any device scale; drawing at the unrounded scale repeated the cell up to half a pixel off at every step, and the error grew with distance from the pattern's origin (ISO 32000-2 8.7.3.1) | (1) `raster::tests::tiles_match_full_render`; (2) `raster::tests::absurd_image_dimensions_are_skipped`; (3) `raster::tests::tiling_cells_stay_small_whatever_the_step`; (4) `raster::tests::absurd_predictor_columns_and_line_widths_render`; (5) `raster::tests::dash_patterns_that_cut_a_stroke_into_billions_of_pieces_render`; (6) `raster::tests::invalid_dash_patterns_terminate_and_are_drawn_solid`; (7) `raster::tests::pixels_are_a_plain_renders_bytes_in_a_buffer_a_gui_can_take_over`; (8) `raster::tests::image_resampling_rejects_anisotropic_target_growth`, `raster::tests::image_resampling_bounds_intermediate_before_planning`, `raster::tests::image_resampling_rejects_invalid_sources_and_scales`, `raster::tests::image_resampling_keeps_valid_sizes_and_exact_limits`, `raster::tests::resampling_fallback_preserves_original_geometry_and_pixels`, `raster::tests::image_resampling_wide_sources_shrink_before_backend_side_limits`, `raster::tests::image_resampling_wide_transparent_sources_still_shrink`, `raster::tests::image_resampling_padded_backend_dimensions_stay_checked`, `raster::tests::image_resampling_mismatched_alpha_mask_keeps_pixels_and_placement`; (9) `raster::tests::skipping_paths_off_the_canvas_changes_no_pixel`; (10) `raster::tests::non_interpolated_images_are_not_smoothed_when_minified`, `raster::tests::non_interpolated_gray_images_are_not_smoothed_when_minified`, `raster::tests::non_integer_minification_samples_the_same_columns`, `raster::tests::non_integer_minification_samples_colour_and_mask_from_the_same_columns`, `raster::tests::non_interpolated_alpha_images_keep_their_colours_and_mask_when_minified`, `raster::tests::non_interpolated_type3_glyph_images_are_not_smoothed_when_minified`, `raster::tests::image_resampling_nearest_accepts_wide_sources_the_filter_refuses`, `raster::tests::wide_non_interpolated_sources_draw_after_shrinking`; (11) `raster::tests::skipping_paths_off_the_canvas_changes_no_pixel`; (12) `raster::tests::preview_renders_skip_tiny_images_but_finals_draw_everything`; (13) `color_replacement_tests::{black_maps_to_text_colour, white_maps_to_background, midgrey_interpolates, alpha_copied_verbatim, only_black_threshold, line_art_false_skips_paths_but_not_text}`, `color_replacement_render_tests::{color_replacement_maps_text_and_line_art, color_replacement_maps_stencil_mask_ink}`; (14) `raster::tests::interpolated_minified_image_edges_snap_to_whole_pixels` (`cargo test -p hayro`); (15) `raster::tests::shrunk_soft_mask_larger_than_its_image_keeps_thin_strokes`; (16) `raster::tests::soft_mask_applies_to_a_shading_pattern_fill`; (17), (18) `raster::tests::reading_colors_keep_highlight_annotations_readable`; (19) `mesh_extent_tests::{a_mesh_paints_its_triangles_alone, a_mesh_keeps_the_graphics_state_alpha, a_mesh_off_the_canvas_paints_nothing}` (`cargo test -p hayro`); (20) `raster::tests::a_tiling_pattern_drawn_once_shows_its_cell`, `raster::tests::a_large_step_still_tiles_where_the_next_cell_shows`, `raster::tests::a_tiling_cell_too_thin_to_scale_keeps_the_old_path`; (22) `raster::tests::knockout_groups_replace_what_their_elements_cover`; (23) `raster::tests::axial_and_radial_shadings_draw_as_native_gradients`; (25) `tiling_cell_placement::{far_cells_of_a_fill_sit_at_whole_steps, far_cells_sit_at_whole_steps_under_a_turned_scaled_matrix, far_cells_of_a_stroke_sit_at_whole_steps, a_cell_pixmap_spans_exactly_one_step}` (`cargo test -p pdfcraft-render --test it`) |
 | hayro-jbig2 | 0.3.0 | Apache-2.0 OR MIT | (1) at most 2^28 pixels per bitmap, page bitmap, halftone grid and grayscale image (each side could be 65535: 4.3 billion pixels decoded one by one); (2) at most 2^26 symbol pixels per symbol dictionary (a fuzzed dictionary decoded for minutes); (3) a symbol dictionary's height classes are capped at one per new symbol and its export runs at `2 × symbols + 1`, each plus `EXTRA_EMPTY_STEPS` (1024): an empty height class or a zero-length export run doesn't advance, and past the end of its data the arithmetic decoder can decode them for ever (one changed byte hung the renderer); (4) a segment header's long-form referred-to segment count is capped at `u16::MAX` and a larger count is refused before its retention or referred-to bytes are read: the 29-bit count went straight to `Vec::with_capacity`, a reservation of about 2 GiB whose failure aborts the process (from storytold/craft-libs#176) | (1) `raster::tests::jbig2_regions_of_billions_of_pixels_are_refused`; (2) the nightly `cargo xtask fuzz` finding, which now finishes in about a second; (3) `raster::tests::jbig2_symbol_dictionaries_that_never_advance_terminate`; (4) `segment::tests::test_referred_to_count_is_capped` (`cargo test --manifest-path vendor/hayro-jbig2/Cargo.toml`) |
 | lopdf | 0.45.0 | MIT | (1) PNG predictor rows longer than the data are refused before their buffers are allocated (a fuzzed `/Columns 4294967295` allocated two 4 GiB rows), and empty frames return without row buffers; (2) predictor row widths use saturating arithmetic or reject overflow; (3) sub-byte TIFF Predictor 2 scratch is bounded by the samples present in the input instead of the declared `/Colors`, aligned with [lopdf#589](https://github.com/J-F-Liu/lopdf/pull/589); (4) the object lookup keeps its cycle history through compressed objects, requires an ordinary in-file container, and caps the chain of indirect lookups at 16 (a chain of new objects, each a `/Length` compressed in a container whose own `/Length` names the next, or a stream whose `/Length` names the next stream, overflowed the stack: a dev build's 2 MiB thread within 800 hops); (5) object-stream members are parsed within their own extent (up to the next distinct offset), an entry whose offset repeats an earlier entry's is skipped (so a repeated object number can resolve to its earlier entry), and offsets are processed in index order; (6) `find_latest_trailer`: a rebuild takes a `/Type /XRef` stream dictionary as the trailer when the file has no `trailer` keyword (the latest in the file wins, as a later `trailer` would), so a concatenated or truncated file keeps its /Info and /ID instead of failing to load; a candidate whose /Root is the catalog beats one whose /Root is another dictionary, and an in-file /Root must match its generation (#2365) | (1) `inspect::tests::png_predictor_rows_longer_than_the_data_are_refused_before_allocating`, `inspect::tests::empty_png_predictor_frames_do_not_allocate_rows`; (2) `inspect::tests::tiff_subbyte_predictor_row_width_overflow_is_refused`; (3) `inspect::tests::tiff_subbyte_predictor_scratch_is_bounded_by_available_samples`, `inspect::tests::tiff_subbyte_predictors_keep_components_rows_and_padding`; (4) `inspect::tests::compressed_object_self_container_does_not_recurse`, `inspect::tests::compressed_object_mutual_containers_do_not_recurse`, `inspect::tests::object_stream_length_cycle_does_not_recurse`, `inspect::tests::compressed_object_container_chain_does_not_recurse`, `inspect::tests::compressed_length_chain_does_not_recurse`, `inspect::tests::plain_stream_length_chain_does_not_recurse`, `inspect::tests::compressed_objects_and_indirect_stream_length_still_load`, `inspect::tests::compressed_length_in_a_container_with_an_indirect_length_still_loads`; (5) `inspect::tests::object_stream_member_extents_bound_owned_strings`, `inspect::tests::object_stream_member_extents_preserve_index_order_and_whitespace`; (6) `inspect::tests::rebuilt_file_keeps_the_info_of_its_cross_reference_stream`, `inspect::tests::rebuilt_file_prefers_a_trailer_whose_root_is_the_catalog` |
diff --git a/vendor/hayro-interpret/src/color.rs b/vendor/hayro-interpret/src/color.rs
index c0f2da16f3..a8e7d84c16 100644
--- a/vendor/hayro-interpret/src/color.rs
+++ b/vendor/hayro-interpret/src/color.rs
@@ -1050,6 +1050,8 @@ pub(crate) struct Separation {
     /// `eval_tint_transform`).
     tint_transform: Option<Function>,
     is_none_separation: bool,
+    /// PdfCraft patch (66): the colourant is the special name `All`.
+    is_all: bool,
 }
 
 /// PdfCraft patch (55): `tint_transform` run on the tints of one colour, or, when it cannot be
@@ -1080,20 +1082,33 @@ impl Separation {
         // PdfCraft patch (55): an unreadable tint transform keeps the space (see
         // `eval_tint_transform`).
         let tint_transform = iter.next::<Object<'_>>().and_then(|f| Function::new(&f));
-        // Either I did something wrong, or no other viewers properly handles
-        // `All`, so let's just ignore it as well.
         let is_none_separation = name.as_str() == "None";
+        // PdfCraft patch (66): `All` names every colourant of the output device at once
+        // (ISO 32000-2 §8.6.6.4), so its tints never go through the alternate space.
+        let is_all = name.as_str() == "All";
 
         Some(Self {
             alternate_space,
             tint_transform,
             is_none_separation,
+            is_all,
         })
     }
 }
 
 impl ToRgb for Separation {
     fn convert_f32(&self, input: &[f32], output: &mut [u8], _: bool) -> Option<()> {
+        if self.is_all {
+            // PdfCraft patch (66): §8.6.6.4: the tint applies to every colourant, and on an
+            // additive device it is complemented first, so tint t is the gray 1 − t on each of
+            // R, G and B whatever the alternate space and tint transform say.
+            for (tint, rgb) in input.iter().zip(output.chunks_exact_mut(3)) {
+                // `clamp` keeps NaN, and `f32_to_u8`'s cast saturates it to 0.
+                let gray = f32_to_u8(1.0 - tint.clamp(0.0, 1.0));
+                rgb.copy_from_slice(&[gray, gray, gray]);
+            }
+            return Some(());
+        }
         count_tint_transform_runs(input.len());
         // PdfCraft patch (55): see `eval_tint_transform`.
         let evaluated = input