Merge 6daae2e292ad148a458c04d9a244021373063649 into ac77fdbb6ee9c4a33813a75e056cb5953d14b1db

crates/typst-html/src/css.rs

@@ -1,11 +1,72 @@
 //! Conversion from Typst data types into CSS data types.
 
-use std::fmt::{self, Display};
+use std::fmt::{self, Display, Write};
 
-use typst_library::layout::Length;
+use ecow::EcoString;
+use typst_library::html::{attr, HtmlElem};
+use typst_library::layout::{Length, Rel};
 use typst_library::visualize::{Color, Hsl, LinearRgb, Oklab, Oklch, Rgb};
 use typst_utils::Numeric;
 
+/// Additional methods for [`HtmlElem`].
+pub trait HtmlElemExt {
+    /// Adds the styles to an element if the property list is non-empty.
+    fn with_styles(self, properties: Properties) -> Self;
+}
+
+impl HtmlElemExt for HtmlElem {
+    /// Adds CSS styles to an element.
+    fn with_styles(self, properties: Properties) -> Self {
+        if let Some(value) = properties.into_inline_styles() {
+            self.with_attr(attr::style, value)
+        } else {
+            self
+        }
+    }
+}
+
+/// A list of CSS properties with values.
+#[derive(Debug, Default)]
+pub struct Properties(EcoString);
+
+impl Properties {
+    /// Creates an empty list.
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    /// Adds a new property to the list.
+    pub fn push(&mut self, property: &str, value: impl Display) {
+        if !self.0.is_empty() {
+            self.0.push_str("; ");
+        }
+        write!(&mut self.0, "{property}: {value}").unwrap();
+    }
+
+    /// Adds a new property in builder-style.
+    #[expect(unused)]
+    pub fn with(mut self, property: &str, value: impl Display) -> Self {
+        self.push(property, value);
+        self
+    }
+
+    /// Turns this into a string suitable for use as an inline `style`
+    /// attribute.
+    pub fn into_inline_styles(self) -> Option<EcoString> {
+        (!self.0.is_empty()).then_some(self.0)
+    }
+}
+
+pub fn rel(rel: Rel) -> impl Display {
+    typst_utils::display(move |f| match (rel.abs.is_zero(), rel.rel.is_zero()) {
+        (false, false) => {
+            write!(f, "calc({}% + {})", rel.rel.get(), length(rel.abs))
+        }
+        (true, false) => write!(f, "{}%", rel.rel.get()),
+        (_, true) => write!(f, "{}", length(rel.abs)),
+    })
+}
+
 pub fn length(length: Length) -> impl Display {
     typst_utils::display(move |f| match (length.abs.is_zero(), length.em.is_zero()) {
         (false, false) => {

crates/typst-html/src/rules.rs

@@ -3,12 +3,12 @@ use std::num::NonZeroUsize;
 use ecow::{eco_format, EcoVec};
 use typst_library::diag::warning;
 use typst_library::foundations::{
-    Content, NativeElement, NativeRuleMap, ShowFn, StyleChain, Target,
+    Content, NativeElement, NativeRuleMap, ShowFn, Smart, StyleChain, Target,
 };
 use typst_library::html::{attr, tag, HtmlAttrs, HtmlElem, HtmlTag};
 use typst_library::introspection::{Counter, Locator};
 use typst_library::layout::resolve::{table_to_cellgrid, Cell, CellGrid, Entry};
-use typst_library::layout::OuterVAlignment;
+use typst_library::layout::{OuterVAlignment, Sizing};
 use typst_library::model::{
     Attribution, CiteElem, CiteGroup, Destination, EmphElem, EnumElem, FigureCaption,
     FigureElem, HeadingElem, LinkElem, LinkTarget, ListElem, ParbreakElem, QuoteElem,
@@ -18,6 +18,9 @@ use typst_library::text::{
     HighlightElem, LinebreakElem, OverlineElem, RawElem, RawLine, SpaceElem, StrikeElem,
     SubElem, SuperElem, UnderlineElem,
 };
+use typst_library::visualize::ImageElem;
+
+use crate::css::{self, HtmlElemExt};
 
 /// Register show rules for the [HTML target](Target::Html).
 pub fn register(rules: &mut NativeRuleMap) {
@@ -47,6 +50,9 @@ pub fn register(rules: &mut NativeRuleMap) {
     rules.register(Html, HIGHLIGHT_RULE);
     rules.register(Html, RAW_RULE);
     rules.register(Html, RAW_LINE_RULE);
+
+    // Visualize.
+    rules.register(Html, IMAGE_RULE);
 }
 
 const STRONG_RULE: ShowFn<StrongElem> = |elem, _, _| {
@@ -338,7 +344,7 @@ fn show_cellgrid(grid: CellGrid, styles: StyleChain) -> Content {
 fn show_cell(tag: HtmlTag, cell: &Cell, styles: StyleChain) -> Content {
     let cell = cell.body.clone();
     let Some(cell) = cell.to_packed::<TableCell>() else { return cell };
-    let mut attrs = HtmlAttrs::default();
+    let mut attrs = HtmlAttrs::new();
     let span = |n: NonZeroUsize| (n != NonZeroUsize::MIN).then(|| n.to_string());
     if let Some(colspan) = span(cell.colspan.get(styles)) {
         attrs.push(attr::colspan, colspan);
@@ -409,3 +415,36 @@ const RAW_RULE: ShowFn<RawElem> = |elem, _, styles| {
 };
 
 const RAW_LINE_RULE: ShowFn<RawLine> = |elem, _, _| Ok(elem.body.clone());
+
+const IMAGE_RULE: ShowFn<ImageElem> = |elem, engine, styles| {
+    let image = elem.decode(engine, styles)?;
+
+    let mut attrs = HtmlAttrs::new();
+    attrs.push(attr::src, typst_svg::convert_image_to_base64_url(&image));
+
+    if let Some(alt) = elem.alt.get_cloned(styles) {
+        attrs.push(attr::alt, alt);
+    }
+
+    let mut inline = css::Properties::new();
+
+    // TODO: Exclude in semantic profile.
+    if let Some(value) = typst_svg::convert_image_scaling(image.scaling()) {
+        inline.push("image-rendering", value);
+    }
+
+    // TODO: Exclude in semantic profile?
+    match elem.width.get(styles) {
+        Smart::Auto => {}
+        Smart::Custom(rel) => inline.push("width", css::rel(rel)),
+    }
+
+    // TODO: Exclude in semantic profile?
+    match elem.height.get(styles) {
+        Sizing::Auto => {}
+        Sizing::Rel(rel) => inline.push("height", css::rel(rel)),
+        Sizing::Fr(_) => {}
+    }
+
+    Ok(HtmlElem::new(tag::img).with_attrs(attrs).with_styles(inline).pack())
+};

crates/typst-ide/src/analyze.rs

@@ -2,7 +2,7 @@ use comemo::Track;
 use ecow::{eco_vec, EcoString, EcoVec};
 use typst::foundations::{Label, Styles, Value};
 use typst::layout::PagedDocument;
-use typst::model::BibliographyElem;
+use typst::model::{BibliographyElem, FigureElem};
 use typst::syntax::{ast, LinkedNode, SyntaxKind};
 
 use crate::IdeWorld;
@@ -75,8 +75,13 @@ pub fn analyze_labels(
     for elem in document.introspector.all() {
         let Some(label) = elem.label() else { continue };
         let details = elem
-            .get_by_name("caption")
-            .or_else(|_| elem.get_by_name("body"))
+            .to_packed::<FigureElem>()
+            .and_then(|figure| match figure.caption.as_option() {
+                Some(Some(caption)) => Some(caption.pack_ref()),
+                _ => None,
+            })
+            .unwrap_or(elem)
+            .get_by_name("body")
             .ok()
             .and_then(|field| match field {
                 Value::Content(content) => Some(content),

crates/typst-ide/src/tooltip.rs

@@ -378,4 +378,9 @@ mod tests {
             .with_source("other.typ", "#let f = (x) => 1");
         test(&world, -4, Side::After).must_be_code("(..) => ..");
     }
+
+    #[test]
+    fn test_tooltip_reference() {
+        test("#figure(caption: [Hi])[]<f> @f", -1, Side::Before).must_be_text("Hi");
+    }
 }

crates/typst-layout/src/image.rs

@@ -1,18 +1,11 @@
-use std::ffi::OsStr;
-
-use typst_library::diag::{warning, At, LoadedWithin, SourceResult, StrResult};
+use typst_library::diag::SourceResult;
 use typst_library::engine::Engine;
-use typst_library::foundations::{Bytes, Derived, Packed, Smart, StyleChain};
+use typst_library::foundations::{Packed, StyleChain};
 use typst_library::introspection::Locator;
 use typst_library::layout::{
     Abs, Axes, FixedAlignment, Frame, FrameItem, Point, Region, Size,
 };
-use typst_library::loading::DataSource;
-use typst_library::text::families;
-use typst_library::visualize::{
-    Curve, ExchangeFormat, Image, ImageElem, ImageFit, ImageFormat, ImageKind,
-    RasterImage, SvgImage, VectorFormat,
-};
+use typst_library::visualize::{Curve, Image, ImageElem, ImageFit};
 
 /// Layout the image.
 #[typst_macros::time(span = elem.span())]
@@ -23,53 +16,7 @@ pub fn layout_image(
     styles: StyleChain,
     region: Region,
 ) -> SourceResult<Frame> {
-    let span = elem.span();
-
-    // Take the format that was explicitly defined, or parse the extension,
-    // or try to detect the format.
-    let Derived { source, derived: loaded } = &elem.source;
-    let format = match elem.format.get(styles) {
-        Smart::Custom(v) => v,
-        Smart::Auto => determine_format(source, &loaded.data).at(span)?,
-    };
-
-    // Warn the user if the image contains a foreign object. Not perfect
-    // because the svg could also be encoded, but that's an edge case.
-    if format == ImageFormat::Vector(VectorFormat::Svg) {
-        let has_foreign_object =
-            memchr::memmem::find(&loaded.data, b"<foreignObject").is_some();
-
-        if has_foreign_object {
-            engine.sink.warn(warning!(
-                span,
-                "image contains foreign object";
-                hint: "SVG images with foreign objects might render incorrectly in typst";
-                hint: "see https://github.com/typst/typst/issues/1421 for more information"
-            ));
-        }
-    }
-
-    // Construct the image itself.
-    let kind = match format {
-        ImageFormat::Raster(format) => ImageKind::Raster(
-            RasterImage::new(
-                loaded.data.clone(),
-                format,
-                elem.icc.get_ref(styles).as_ref().map(|icc| icc.derived.clone()),
-            )
-            .at(span)?,
-        ),
-        ImageFormat::Vector(VectorFormat::Svg) => ImageKind::Svg(
-            SvgImage::with_fonts(
-                loaded.data.clone(),
-                engine.world,
-                &families(styles).map(|f| f.as_str()).collect::<Vec<_>>(),
-            )
-            .within(loaded)?,
-        ),
-    };
-
-    let image = Image::new(kind, elem.alt.get_cloned(styles), elem.scaling.get(styles));
+    let image = elem.decode(engine, styles)?;
 
     // Determine the image's pixel aspect ratio.
     let pxw = image.width();
@@ -122,7 +69,7 @@ pub fn layout_image(
     // the frame to the target size, center aligning the image in the
     // process.
     let mut frame = Frame::soft(fitted);
-    frame.push(Point::zero(), FrameItem::Image(image, fitted, span));
+    frame.push(Point::zero(), FrameItem::Image(image, fitted, elem.span()));
     frame.resize(target, Axes::splat(FixedAlignment::Center));
 
     // Create a clipping group if only part of the image should be visible.
@@ -132,25 +79,3 @@ pub fn layout_image(
 
     Ok(frame)
 }
-
-/// Try to determine the image format based on the data.
-fn determine_format(source: &DataSource, data: &Bytes) -> StrResult<ImageFormat> {
-    if let DataSource::Path(path) = source {
-        let ext = std::path::Path::new(path.as_str())
-            .extension()
-            .and_then(OsStr::to_str)
-            .unwrap_or_default()
-            .to_lowercase();
-
-        match ext.as_str() {
-            "png" => return Ok(ExchangeFormat::Png.into()),
-            "jpg" | "jpeg" => return Ok(ExchangeFormat::Jpg.into()),
-            "gif" => return Ok(ExchangeFormat::Gif.into()),
-            "svg" | "svgz" => return Ok(VectorFormat::Svg.into()),
-            "webp" => return Ok(ExchangeFormat::Webp.into()),
-            _ => {}
-        }
-    }
-
-    Ok(ImageFormat::detect(data).ok_or("unknown image format")?)
-}

crates/typst-library/src/html/dom.rs

@@ -165,6 +165,11 @@ cast! {
 pub struct HtmlAttrs(pub EcoVec<(HtmlAttr, EcoString)>);
 
 impl HtmlAttrs {
+    /// Creates an empty attribute list.
+    pub fn new() -> Self {
+        Self::default()
+    }
+
     /// Add an attribute.
     pub fn push(&mut self, attr: HtmlAttr, value: impl Into<EcoString>) {
         self.0.push((attr, value.into()));

crates/typst-library/src/visualize/image/mod.rs

@@ -8,6 +8,7 @@ pub use self::raster::{
 };
 pub use self::svg::SvgImage;
 
+use std::ffi::OsStr;
 use std::fmt::{self, Debug, Formatter};
 use std::sync::Arc;
 
@@ -15,14 +16,16 @@ use ecow::EcoString;
 use typst_syntax::{Span, Spanned};
 use typst_utils::LazyHash;
 
-use crate::diag::StrResult;
+use crate::diag::{warning, At, LoadedWithin, SourceResult, StrResult};
+use crate::engine::Engine;
 use crate::foundations::{
     cast, elem, func, scope, Bytes, Cast, Content, Derived, NativeElement, Packed, Smart,
+    StyleChain,
 };
 use crate::layout::{Length, Rel, Sizing};
 use crate::loading::{DataSource, Load, LoadSource, Loaded, Readable};
 use crate::model::Figurable;
-use crate::text::LocalName;
+use crate::text::{families, LocalName};
 
 /// A raster or vector graphic.
 ///
@@ -217,6 +220,81 @@ impl ImageElem {
     }
 }
 
+impl Packed<ImageElem> {
+    /// Decodes the image.
+    pub fn decode(&self, engine: &mut Engine, styles: StyleChain) -> SourceResult<Image> {
+        let span = self.span();
+        let loaded = &self.source.derived;
+        let format = self.determine_format(styles).at(span)?;
+
+        // Warn the user if the image contains a foreign object. Not perfect
+        // because the svg could also be encoded, but that's an edge case.
+        if format == ImageFormat::Vector(VectorFormat::Svg) {
+            let has_foreign_object =
+                memchr::memmem::find(&loaded.data, b"<foreignObject").is_some();
+
+            if has_foreign_object {
+                engine.sink.warn(warning!(
+                span,
+                "image contains foreign object";
+                hint: "SVG images with foreign objects might render incorrectly in typst";
+                hint: "see https://github.com/typst/typst/issues/1421 for more information"
+            ));
+            }
+        }
+
+        // Construct the image itself.
+        let kind = match format {
+            ImageFormat::Raster(format) => ImageKind::Raster(
+                RasterImage::new(
+                    loaded.data.clone(),
+                    format,
+                    self.icc.get_ref(styles).as_ref().map(|icc| icc.derived.clone()),
+                )
+                .at(span)?,
+            ),
+            ImageFormat::Vector(VectorFormat::Svg) => ImageKind::Svg(
+                SvgImage::with_fonts(
+                    loaded.data.clone(),
+                    engine.world,
+                    &families(styles).map(|f| f.as_str()).collect::<Vec<_>>(),
+                )
+                .within(loaded)?,
+            ),
+        };
+
+        Ok(Image::new(kind, self.alt.get_cloned(styles), self.scaling.get(styles)))
+    }
+
+    /// Tries to determine the image format based on the format that was
+    /// explicitly defined, or else the extension, or else the data.
+    fn determine_format(&self, styles: StyleChain) -> StrResult<ImageFormat> {
+        if let Smart::Custom(v) = self.format.get(styles) {
+            return Ok(v);
+        };
+
+        let Derived { source, derived: loaded } = &self.source;
+        if let DataSource::Path(path) = source {
+            let ext = std::path::Path::new(path.as_str())
+                .extension()
+                .and_then(OsStr::to_str)
+                .unwrap_or_default()
+                .to_lowercase();
+
+            match ext.as_str() {
+                "png" => return Ok(ExchangeFormat::Png.into()),
+                "jpg" | "jpeg" => return Ok(ExchangeFormat::Jpg.into()),
+                "gif" => return Ok(ExchangeFormat::Gif.into()),
+                "svg" | "svgz" => return Ok(VectorFormat::Svg.into()),
+                "webp" => return Ok(ExchangeFormat::Webp.into()),
+                _ => {}
+            }
+        }
+
+        Ok(ImageFormat::detect(&loaded.data).ok_or("unknown image format")?)
+    }
+}
+
 impl LocalName for Packed<ImageElem> {
     const KEY: &'static str = "figure";
 }

crates/typst-svg/src/image.rs

@@ -18,18 +18,24 @@ impl SVGRenderer {
         self.xml.write_attribute("width", &size.x.to_pt());
         self.xml.write_attribute("height", &size.y.to_pt());
         self.xml.write_attribute("preserveAspectRatio", "none");
-        match image.scaling() {
-            Smart::Auto => {}
+        if let Some(value) = convert_image_scaling(image.scaling()) {
+            self.xml
+                .write_attribute("style", &format_args!("image-rendering: {value}"))
+        }
+        self.xml.end_element();
+    }
+}
+
+/// Converts an image scaling to a CSS `image-rendering` propery value.
+pub fn convert_image_scaling(scaling: Smart<ImageScaling>) -> Option<&'static str> {
+    match scaling {
+        Smart::Auto => None,
         Smart::Custom(ImageScaling::Smooth) => {
             // This is still experimental and not implemented in all major browsers.
             // https://developer.mozilla.org/en-US/docs/Web/CSS/image-rendering#browser_compatibility
-                self.xml.write_attribute("style", "image-rendering: smooth")
+            Some("smooth")
         }
-            Smart::Custom(ImageScaling::Pixelated) => {
-                self.xml.write_attribute("style", "image-rendering: pixelated")
-            }
-        }
-        self.xml.end_element();
+        Smart::Custom(ImageScaling::Pixelated) => Some("pixelated"),
     }
 }
 

crates/typst-svg/src/lib.rs

@@ -5,6 +5,8 @@ mod paint;
 mod shape;
 mod text;
 
+pub use image::{convert_image_scaling, convert_image_to_base64_url};
+
 use std::collections::HashMap;
 use std::fmt::{self, Display, Formatter, Write};
 

docs/tutorial/1-writing.md

@@ -84,8 +84,9 @@ meaning in Typst. We can use `=`, `-`, `+`, and `_` to create headings, lists
 and emphasized text, respectively. However, having a special symbol for
 everything we want to insert into our document would soon become cryptic and
 unwieldy. For this reason, Typst reserves markup symbols only for the most
-common things. Everything else is inserted with _functions._ For our image to
-show up on the page, we use Typst's [`image`] function.
+common things. Everything else is inserted with _functions._ For
+[our image](https://github.com/typst/typst-dev-assets/blob/main/files/images/glacier.jpg)
+to show up on the page, we use Typst's [`image`] function.
 
 ```example
 #image("glacier.jpg")
@@ -125,19 +126,38 @@ mode. This means, you now have to remove the hash before the image function call
 The hash is only needed directly in markup (to disambiguate text from function
 calls).
 
-The caption consists of arbitrary markup. To give markup to a function, we
-enclose it in square brackets. This construct is called a _content block._
+The caption consists of arbitrary markup, and can also be a string. To give
+markup to a function, we enclose it in square brackets. This construct is called
+a _content block._
 
 ```example
 #figure(
   image("glacier.jpg", width: 70%),
-  caption: [
+  caption: box[
     _Glaciers_ form an important part
     of the earth's climate system.
   ],
 )
 ```
 
+**Be careful** about putting the square brackets by themselves on separate
+lines. This will introduce leading and trailing space around inline text inside
+the brackets, that is hard to notice. Below are several caption examples: one
+with extra undesired space, and 3 correct ones.
+
+```example
+#show rect: none
+#figure(rect(), caption: [
+  Caption text
+])
+#figure(rect(), caption: box[
+  Caption text
+])
+#figure(rect(), caption: [Caption
+  text]) // Many spaces in markup counts as one.
+#figure(rect(), caption: "Caption text") // Spaces in strings are displayed verbatim.
+```
+
 You continue to write your report and now want to reference the figure. To do
 that, first attach a label to figure. A label uniquely identifies an element in
 your document. Add one after the figure by enclosing some name in angle

docs/tutorial/2-formatting.md

@@ -110,8 +110,8 @@ font. For the purposes of the example, we'll also set another page size.
   margin: (x: 1.8cm, y: 1.5cm),
 )
 #set text(
+  size: 10pt,
   font: "New Computer Modern",
-  size: 10pt
 )
 #set par(
   justify: true,
@@ -235,19 +235,27 @@ Instead, you could maybe
 [define a custom function]($function/#defining-functions) that always yields the
 logo with its image. However, there is an even easier way:
 
-With show rules, you can redefine how Typst displays certain elements. You
+With show rules, you can redefine how Typst displays certain elements. You can
 specify which elements Typst should show differently and how they should look.
 Show rules can be applied to instances of text, many functions, and even the
 whole document.
 
 ```example
-#show "ArtosFlow": name => box[
-  #box(image(
+// #show "ArtosFlow": name => {
+//   let logo = box(image(
+//     "logo.svg",
+//     height: 0.7em,
+//   ))
+//   [#logo #name]
+// }
+#show "ArtosFlow": name => {
+  box(image(
     "logo.svg",
     height: 0.7em,
   ))
-  #name
-]
+  " "
+  name
+}
 
 This report is embedded in the
 ArtosFlow project. ArtosFlow is a
@@ -256,18 +264,18 @@ project of the Artos Institute.
 
 There is a lot of new syntax in this example: We write the `{show}` keyword,
 followed by a string of text we want to show differently and a colon. Then, we
-write a function that takes the content that shall be shown as an argument.
-Here, we called that argument `name`. We can now use the `name` variable in the
-function's body to print the ArtosFlow name. Our show rule adds the logo image
-in front of the name and puts the result into a box to prevent linebreaks from
-occurring between logo and name. The image is also put inside of a box, so that
-it does not appear in its own paragraph.
+write a function that takes the content as an argument that shall be shown.
+Here, we called that argument `name`. We can now use the `name` variable in
+the function's body to display the ArtosFlow name. Our show rule adds the logo
+image to the left of the name and inserts a single space between the two.
+The image is put inside of a `box`, so that it does not appear in its own
+paragraph, because `image` is a block-level element.
 
-The calls to the first box function and the image function did not require a
-leading `#` because they were not embedded directly in markup. When Typst
-expects code instead of markup, the leading `#` is not needed to access
-functions, keywords, and variables. This can be observed in parameter lists,
-function definitions, and [code blocks]($scripting).
+<!-- The calls to the first box function and the image function did not require a -->
+<!-- leading `#` because they were not embedded directly in markup. When Typst -->
+<!-- expects code instead of markup, the leading `#` is not needed to access -->
+<!-- functions, keywords, and variables. This can be observed in parameter lists, -->
+<!-- function definitions, and [code blocks]($scripting). -->
 
 ## Review
 You now know how to apply basic formatting to your Typst documents. You learned

docs/tutorial/3-advanced.md

@@ -6,7 +6,7 @@ description: Typst's tutorial.
 In the previous two chapters of this tutorial, you have learned how to write a
 document in Typst and how to change its formatting. The report you wrote
 throughout the last two chapters got a straight A and your supervisor wants to
-base a conference paper on it! The report will of course have to comply with the
+base a conference paper on it! The paper will of course have to comply with the
 conference's style guide. Let's see how we can achieve that.
 
 Before we start, let's create a team, invite your supervisor and add them to the
@@ -51,7 +51,6 @@ Let's start by writing some set rules for the document.
 
 ```example
 #set page(
->>>  margin: auto,
   paper: "us-letter",
   header: align(right)[
     A fluid dynamic model for
@@ -61,8 +60,8 @@ Let's start by writing some set rules for the document.
 )
 #set par(justify: true)
 #set text(
-  font: "Libertinus Serif",
   size: 11pt,
+  font: "Libertinus Serif",
 )
 
 #lorem(600)
@@ -72,12 +71,12 @@ You are already familiar with most of what is going on here. We set the text
 size to `{11pt}` and the font to Libertinus Serif. We also enable paragraph
 justification and set the page size to US letter.
 
-The `header` argument is new: With it, we can provide content to fill the top
+The `header` field is new: with it, we can provide content to fill the top
 margin of every page. In the header, we specify our paper's title as requested
 by the conference style guide. We use the `align` function to align the text to
 the right.
 
-Last but not least is the `numbering` argument. Here, we can provide a
+Last but not least is the `numbering` field. Here, we can provide a
 [numbering pattern]($numbering) that defines how to number the pages. By
 setting it to `{"1"}`, Typst only displays the bare page number. Setting it to
 `{"(1/1)"}` would have displayed the current page and total number of pages
@@ -89,35 +88,65 @@ Now, let's add a title and an abstract. We'll start with the title. We center
 align it and increase its font weight by enclosing it in `[*stars*]`.
 
 ```example
->>> #set page(width: 300pt, margin: 30pt)
->>> #set text(font: "Libertinus Serif", 11pt)
-#align(center, text(17pt)[
+>>> #set page(
+>>>   // paper: "us-letter",
+>>>   width: 300pt,
+>>>   margin: 30pt,
+>>>   header: align(right)[
+>>>     A fluid dynamic model for
+>>>     glacier flow
+>>>   ],
+>>>   // numbering: "1",
+>>> )
+>>> #set par(justify: true)
+>>> #set text(11pt, font: "Libertinus Serif")
+<<< ...
+#align(center, block(text(
+  17pt,
+  hyphenate: false
+)[
   *A fluid dynamic model
   for glacier flow*
-])
+]))
 ```
 
 This looks right. We used the `text` function to override the previous text
-set rule locally, increasing the size to 17pt for the function's argument. Let's
-also add the author list: Since we are writing this paper together with our
-supervisor, we'll add our own and their name.
+set rule locally, increasing the size to 17 pt.
+Add explanation about block+hyphenate, which is pretty convoluted.
+Let's also add the author list: Since we are writing this paper together with
+our supervisor, we'll add our own and their name.
 
 ```example
->>> #set page(width: 300pt, margin: 30pt)
->>> #set text(font: "Libertinus Serif", 11pt)
+>>> #set page(
+>>>   // paper: "us-letter",
+>>>   width: 300pt,
+>>>   margin: 30pt,
+>>>   header: align(right)[
+>>>     A fluid dynamic model for
+>>>     glacier flow
+>>>   ],
+>>>   // numbering: "1",
+>>> )
+>>> #set par(justify: true)
+>>> #set text(11pt, font: "Libertinus Serif")
 >>>
->>> #align(center, text(17pt)[
+>>> #align(center, block(text(
+>>>   17pt,
+>>>   hyphenate: false
+>>> )[
 >>>   *A fluid dynamic model
 >>>   for glacier flow*
->>> ])
+>>> ]))
+<<< ...
 #grid(
   columns: (1fr, 1fr),
-  align(center)[
+  align: center,
+  [
     Therese Tungsten \
     Artos Institute \
     #link("mailto:tung@artos.edu")
   ],
-  align(center)[
+  [
     Dr. John Doe \
     Artos Institute \
     #link("mailto:doe@artos.edu")
@@ -127,45 +156,49 @@ supervisor, we'll add our own and their name.
 
 The two author blocks are laid out next to each other. We use the [`grid`]
 function to create this layout. With a grid, we can control exactly how large
-each column is and which content goes into which cell. The `columns` argument
-takes an array of [relative lengths]($relative) or [fractions]($fraction). In
-this case, we passed it two equal fractional sizes, telling it to split the
-available space into two equal columns. We then passed two content arguments to
-the grid function. The first with our own details, and the second with our
-supervisors'. We again use the `align` function to center the content within the
-column. The grid takes an arbitrary number of content arguments specifying the
-cells. Rows are added automatically, but they can also be manually sized with
-the `rows` argument.
+each column is and which content goes into which cell. The `columns` field
+takes the number of columns, or an array of [relative lengths]($relative) or
+[fractions]($fraction). In this case, we passed it two equal fractional sizes,
+telling it to split the available space into two equal columns. We then passed
+two content arguments to the grid function --- the first with our own details,
+and the second with our supervisor's. With grid, we can avoid using `align` on
+each cell content to center them, and instead use the `align` field to do this
+for all cells automatically. The grid takes an arbitrary number of content
+arguments specifying the cells. Rows are added automatically, but they can also
+be manually sized with the `rows` field.
 
 Now, let's add the abstract. Remember that the conference wants the abstract to
 be set ragged and centered.
 
 ```example:0,0,612,317.5
->>> #set text(font: "Libertinus Serif", 11pt)
->>> #set par(justify: true)
 >>> #set page(
->>>   "us-letter",
->>>   margin: auto,
->>>   header: align(right + horizon)[
+>>>   paper: "us-letter",
+>>>   header: align(right)[
 >>>     A fluid dynamic model for
 >>>     glacier flow
 >>>   ],
 >>>   numbering: "1",
 >>> )
+>>> #set par(justify: true)
+>>> #set text(11pt, font: "Libertinus Serif")
 >>>
->>> #align(center, text(17pt)[
+>>> #align(center, block(text(
+>>>   17pt,
+>>>   hyphenate: false
+>>> )[
 >>>   *A fluid dynamic model
 >>>   for glacier flow*
->>> ])
+>>> ]))
 >>>
 >>> #grid(
 >>>   columns: (1fr, 1fr),
->>>   align(center)[
+>>>   align: center,
+>>>   [
 >>>     Therese Tungsten \
 >>>     Artos Institute \
 >>>     #link("mailto:tung@artos.edu")
 >>>   ],
->>>   align(center)[
+>>>   [
 >>>     Dr. John Doe \
 >>>     Artos Institute \
 >>>     #link("mailto:doe@artos.edu")
@@ -198,35 +231,33 @@ keyword:
   for glacier flow
 ]
 
-<<< ...
-
->>> #set text(font: "Libertinus Serif", 11pt)
->>> #set par(justify: true)
 #set page(
->>>   "us-letter",
->>>   margin: auto,
-  header: align(
-    right + horizon,
-    title
-  ),
+>>>   paper: "us-letter",
+<<<   ...
+  header: align(right, title),
 <<<   ...
 >>>   numbering: "1",
 )
-
-#align(center, text(17pt)[
-  *#title*
-])
-
+>>> #set par(justify: true)
+>>> #set text(11pt, font: "Libertinus Serif")
 <<< ...
 
+#align(center, block(text(
+  17pt,
+  hyphenate: false,
+  strong(title),
+)))
+
+<<< ...
 >>> #grid(
 >>>   columns: (1fr, 1fr),
->>>   align(center)[
+>>>   align: center,
+>>>   [
 >>>     Therese Tungsten \
 >>>     Artos Institute \
 >>>     #link("mailto:tung@artos.edu")
 >>>   ],
->>>   align(center)[
+>>>   [
 >>>     Dr. John Doe \
 >>>     Artos Institute \
 >>>     #link("mailto:doe@artos.edu")
@@ -247,55 +278,48 @@ and also within markup (prefixed by `#`, like functions). This way, if we decide
 on another title, we can easily change it in one place.
 
 ## Adding columns and headings { #columns-and-headings }
-The paper above unfortunately looks like a wall of lead. To fix that, let's add
+The paper above unfortunately looks like a wall of lead(?). To fix that, let's add
 some headings and switch our paper to a two-column layout. Fortunately, that's
-easy to do: We just need to amend our `page` set rule with the `columns`
-argument.
+easy to do: we just need to amend our `page` set rule with the `columns` field.
 
 By adding `{columns: 2}` to the argument list, we have wrapped the whole
 document in two columns. However, that would also affect the title and authors
 overview. To keep them spanning the whole page, we can wrap them in a function
-call to [`{place}`]($place). Place expects an alignment and the content it
-should place as positional arguments. Using the named `{scope}` argument, we can
+call to [`{place}`]($place). The `place` expects an alignment and the content it
+should place as positional arguments. Using the named `scope` field, we can
 decide if the items should be placed relative to the current column or its
 parent (the page). There is one more thing to configure: If no other arguments
-are provided, `{place}` takes its content out of the flow of the document and
+are provided, `place` takes its content out of the flow of the document and
 positions it over the other content without affecting the layout of other
 content in its container:
 
 ```example
-#place(
-  top + center,
-  rect(fill: black),
-)
+#place(top + center, rect())
 #lorem(30)
 ```
 
-If we hadn't used `{place}` here, the square would be in its own line, but here
-it overlaps the few lines of text following it. Likewise, that text acts like as
-if there was no square. To change this behavior, we can pass the argument
-`{float: true}` to ensure that the space taken up by the placed item at the top
-or bottom of the page is not occupied by any other content.
+If we hadn't used `place` here, the rectangle would be in its own line, but
+here it overlaps the few lines of text following it. Likewise, that text acts
+like as if there was no rectangle. To change this behavior, we can pass the
+argument `{float: true}` to ensure that the space taken up by the placed item
+at the top or bottom of the page is not occupied by any other content.
 
 ```example:single
 >>> #let title = [
 >>>   A fluid dynamic model
 >>>   for glacier flow
 >>> ]
->>>
->>> #set text(font: "Libertinus Serif", 11pt)
->>> #set par(justify: true)
->>>
+<<< ...
+
 #set page(
->>> margin: auto,
   paper: "us-letter",
-  header: align(
-    right + horizon,
-    title
-  ),
+  header: align(right, title),
   numbering: "1",
   columns: 2,
 )
+>>> #set par(justify: true)
+>>> #set text(11pt, font: "Libertinus Serif")
+<<< ...
 
 #place(
   top + center,
@@ -303,11 +327,7 @@ or bottom of the page is not occupied by any other content.
   scope: "parent",
   clearance: 2em,
 )[
->>>  #text(
->>>    17pt,
->>>    weight: "bold",
->>>    title,
->>>  )
+>>>  #block(text(17pt, hyphenate: false, strong(title)))
 >>>
 >>>  #grid(
 >>>    columns: (1fr, 1fr),
@@ -324,11 +344,10 @@ or bottom of the page is not occupied by any other content.
 >>>  )
 <<<   ...
 
-  #par(justify: false)[
+  #set par(justify: false) // Put it above to remove hyphenate?
   *Abstract* \
   #lorem(80)
 ]
-]
 
 = Introduction
 #lorem(300)
@@ -337,14 +356,14 @@ or bottom of the page is not occupied by any other content.
 #lorem(200)
 ```
 
-In this example, we also used the `clearance` argument of the `{place}` function
-to provide the space between it and the body instead of using the [`{v}`]($v)
+In this example, we also used the `clearance` argument of the `place` function
+to provide the space between it and the body instead of using the [`v`]
 function. We can also remove the explicit `{align(center, ..)}` calls around the
 various parts since they inherit the center alignment from the placement.
 
-Now there is only one thing left to do: Style our headings. We need to make them
-centered and use small capitals. Because the `heading` function does not offer
-a way to set any of that, we need to write our own heading show rule.
+Now there is only one thing left to do: style our headings. We need to make them
+centered and use small capitals. For centering we can use a show-set rule, but
+to use small capitals we need to write our own heading show rule.
 
 ```example:50,250,265,270
 >>> #let title = [
@@ -352,37 +371,27 @@ a way to set any of that, we need to write our own heading show rule.
 >>>   for glacier flow
 >>> ]
 >>>
->>> #set text(font: "Libertinus Serif", 11pt)
->>> #set par(justify: true)
 >>> #set page(
->>>   "us-letter",
->>>   margin: auto,
->>>   header: align(
->>>     right + horizon,
->>>     title
->>>   ),
+>>>   paper: "us-letter",
+>>>   header: align(right, title),
 >>>   numbering: "1",
 >>>   columns: 2,
 >>> )
-#show heading: it => [
-  #set align(center)
-  #set text(13pt, weight: "regular")
-  #block(smallcaps(it.body))
-]
+>>> #set par(justify: true)
+>>> #set text(11pt, font: "Libertinus Serif")
+<<< ...
+#show heading: set align(center)
+#show heading: set text(13pt, weight: "regular")
+#show heading: it => block(smallcaps(it.body))
 
 <<< ...
->>>
 >>> #place(
 >>>   top + center,
 >>>   float: true,
 >>>   scope: "parent",
 >>>   clearance: 2em,
 >>> )[
->>>   #text(
->>>     17pt,
->>>     weight: "bold",
->>>     title,
->>>   )
+>>>   #block(text(17pt, hyphenate: false, strong(title)))
 >>>
 >>>   #grid(
 >>>     columns: (1fr, 1fr),
@@ -398,11 +407,10 @@ a way to set any of that, we need to write our own heading show rule.
 >>>     ]
 >>>   )
 >>>
->>>   #par(justify: false)[
+>>>   #set par(justify: false)
 >>>   *Abstract* \
 >>>   #lorem(80)
 >>> ]
->>> ]
 >>>
 >>> = Introduction
 >>> #lorem(35)
@@ -411,19 +419,26 @@ a way to set any of that, we need to write our own heading show rule.
 >>> #lorem(45)
 ```
 
-This looks great! We used a show rule that applies to all headings. We give it a
-function that gets passed the heading as a parameter. That parameter can be used
-as content but it also has some fields like `title`, `numbers`, and `level` from
-which we can compose a custom look. Here, we are center-aligning, setting the
-font weight to `{"regular"}` because headings are bold by default, and use the
-[`smallcaps`] function to render the heading's title in small capitals.
+This looks great! We used a few rules that apply to all headings. First, we
+made headings centered, then we set font size to 13 pt and removed default
+heading boldness by setting `weight` to `{"regular"}`. Lastly, there is a show
+rule with a closure, i.e., a callback function. We gave it a function that
+passes the heading as argument. That argument can be used as content but it
+also has some fields like `title`, `numbers`, and `level`, from which we can
+compose a custom look. Here, we use the [`smallcaps`] function to render the
+heading's title in small capitals. Note that heading itself is wrapped in a
+block by default, as it's a block-level element, and by using `{it.body}` we
+are destroying the default structure of the heading. This means we strip away
+not only the `block` "shell", but also any potential numbering and other
+heading features. To restore it's semantic structure, we wrap
+`{smallcaps(it.body)}` in a `block`. This way it will behave like usual.
 
-The only remaining problem is that all headings look the same now. The
-"Motivation" and "Problem Statement" subsections ought to be italic run in
-headers, but right now, they look indistinguishable from the section headings. We
-can fix that by using a `where` selector on our set rule: This is a
-[method]($scripting/#methods) we can call on headings (and other
-elements) that allows us to filter them by their level. We can use it to
+The only remaining problem is that all headings now look the same. The
+"Motivation" and "Problem Statement" subsections ought to be italic run-in
+headings, but right now, they look indistinguishable from the section headings.
+We can fix that by using a `where` selector on our show rules: this is a
+[method]($scripting/#methods) we can call on headings (and other elements) that
+allows us to filter them by their level (and other fields). We can use it to
 differentiate between section and subsection headings:
 
 ```example:50,250,265,245
@@ -432,47 +447,31 @@ differentiate between section and subsection headings:
 >>>   for glacier flow
 >>> ]
 >>>
->>> #set text(font: "Libertinus Serif", 11pt)
->>> #set par(justify: true)
 >>> #set page(
->>>   "us-letter",
->>>   margin: auto,
->>>   header: align(
->>>     right + horizon,
->>>     title
->>>   ),
+>>>   paper: "us-letter",
+>>>   header: align(right, title),
 >>>   numbering: "1",
 >>>   columns: 2,
 >>> )
->>>
-#show heading.where(
-  level: 1
-): it => block(width: 100%)[
-  #set align(center)
-  #set text(13pt, weight: "regular")
-  #smallcaps(it.body)
-]
+>>> #set par(justify: true)
+>>> #set text(11pt, font: "Libertinus Serif")
+<<< ...
 
-#show heading.where(
-  level: 2
-): it => text(
-  size: 11pt,
-  weight: "regular",
-  style: "italic",
-  it.body + [.],
-)
->>>
+#show heading.where(level: 1): set align(center)
+#show heading.where(level: 1): set text(13pt, weight: "regular")
+#show heading.where(level: 1): it => block(smallcaps(it.body))
+
+#show heading.where(level: 2): set text(11pt, weight: "regular", style: "italic")
+#show heading.where(level: 2): it => [#it.body.]
+
+<<< ...
 >>> #place(
 >>>   top + center,
 >>>   float: true,
 >>>   scope: "parent",
 >>>   clearance: 2em,
 >>> )[
->>>   #text(
->>>     17pt,
->>>     weight: "bold",
->>>     title,
->>>   )
+>>>   #block(text(17pt, hyphenate: false, strong(title)))
 >>>
 >>>   #grid(
 >>>     columns: (1fr, 1fr),
@@ -488,11 +487,10 @@ differentiate between section and subsection headings:
 >>>     ]
 >>>   )
 >>>
->>>   #par(justify: false)[
+>>>   #set par(justify: false)
 >>>   *Abstract* \
 >>>   #lorem(80)
 >>> ]
->>> ]
 >>>
 >>> = Introduction
 >>> #lorem(35)
@@ -501,10 +499,12 @@ differentiate between section and subsection headings:
 >>> #lorem(45)
 ```
 
-This looks great! We wrote two show rules that each selectively apply to the
-first and second level headings. We used a `where` selector to filter the
-headings by their level. We then rendered the subsection headings as run-ins. We
-also automatically add a period to the end of the subsection headings.
+Excellent! We wrote several rules that selectively apply to the first and second
+level headings. We used a `where` selector to filter the headings by their
+level. We then rendered the subsection headings as run-ins. We also
+automatically added a period to the end of the subsection headings. This time
+we did not wrap result in a `block`, because we need the heading to be inline
+with the following text.
 
 Let's review the conference's style guide:
 - The font should be an 11 pt serif font ✓
@@ -516,8 +516,9 @@ Let's review the conference's style guide:
   13 pt ✓
 - Second level headings are run-ins, italicized and have the same size as the
   body text ✓
-- Finally, the pages should be US letter sized, numbered in the center and the
-  top right corner of each page should contain the title of the paper ✓
+- Finally, the pages should be US letter sized, numbered in the center of the
+  footer and the top right corner of each page should contain the title of the
+  paper ✓
 
 We are now in compliance with all of these styles and can submit the paper to
 the conference! The finished paper looks like this:
@@ -528,6 +529,62 @@ the conference! The finished paper looks like this:
   style="box-shadow: 0 4px 12px rgb(89 85 101 / 20%); width: 500px; max-width: 100%; display: block; margin: 24px auto;"
 >
 
+Here is a full listing of the finished paper:
+
+```example
+#let title = [A fluid dynamic model for glacier flow]
+
+#set page(
+  paper: "us-letter",
+  header: align(right, title),
+  numbering: "1",
+  columns: 2,
+)
+#set par(justify: true)
+#set text(11pt, font: "Libertinus Serif")
+
+#show heading.where(level: 1): set align(center)
+#show heading.where(level: 1): set text(13pt, weight: "regular")
+#show heading.where(level: 1): it => block(smallcaps(it.body))
+
+#show heading.where(level: 2): set text(11pt, weight: "regular", style: "italic")
+#show heading.where(level: 2): it => [#it.body.]
+
+#place(top + center, float: true, scope: "parent", clearance: 2em)[
+  #block(text(17pt, hyphenate: false, strong(title)))
+
+  #grid(
+    columns: (1fr, 1fr),
+    [
+      Therese Tungsten \
+      Artos Institute \
+      #link("mailto:tung@artos.edu")
+    ],
+    [
+      Dr. John Doe \
+      Artos Institute \
+      #link("mailto:doe@artos.edu")
+    ]
+  )
+
+  #set par(justify: false)
+  *Abstract* \
+  #lorem(80)
+]
+
+= Introduction
+#lorem(90)
+
+== Motivation
+#lorem(140)
+
+== Problem Statement
+#lorem(50)
+
+= Related Work
+#lorem(200)
+```
+
 ## Review
 You have now learned how to create headers and footers, how to use functions and
 scopes to locally override styles, how to create more complex layouts with the

docs/tutorial/4-template.md

@@ -25,7 +25,10 @@ You are #amazed[beautiful]!
 
 This function takes a single argument, `term`, and returns a content block with
 the `term` surrounded by sparkles. We also put the whole thing in a box so that
-the term we are amazed by cannot be separated from its sparkles by a line break.
+the term we are amazed by cannot be separated from its sparkles by a line
+break. Alternatively, you can use a
+[shorthand](https://typst.app/docs/reference/symbols/#shorthands)
+for a no-break space and write `{[✨~#term~✨]}`.
 
 Many functions that come with Typst have optional named parameters. Our
 functions can also have them. Let's add a parameter to our function that lets us
@@ -34,7 +37,7 @@ parameter isn't given.
 
 ```example
 #let amazed(term, color: blue) = {
-  text(color, box[✨ #term ✨])
+  text(color)[✨~#term~✨]
 }
 
 You are #amazed[beautiful]!
@@ -43,7 +46,7 @@ I am #amazed(color: purple)[amazed]!
 
 Templates now work by wrapping our whole document in a custom function like
 `amazed`. But wrapping a whole document in a giant function call would be
-cumbersome! Instead, we can use an "everything" show rule to achieve the same
+cumbersome! Instead, we can use an "global" show rule to achieve the same
 with cleaner code. To write such a show rule, put a colon directly after the
 show keyword and then provide a function. This function is given the rest of the
 document as a parameter. The function can then do anything with this content.
@@ -52,7 +55,7 @@ just pass it by name to the show rule. Let's try it:
 
 ```example
 >>> #let amazed(term, color: blue) = {
->>>   text(color, box[✨ #term ✨])
+>>>   text(color)[✨~#term~✨]
 >>> }
 #show: amazed
 I choose to focus on the good
@@ -68,69 +71,56 @@ powerful.
 
 ## Embedding set and show rules { #set-and-show-rules }
 To apply some set and show rules to our template, we can use `set` and `show`
-within a content block in our function and then insert the document into
-that content block.
+within a code block in our function and then insert the document into
+that code block.
 
 ```example
-#let template(doc) = [
-  #set text(font: "Inria Serif")
-  #show "something cool": [Typst]
-  #doc
-]
+#let template(doc) = {
+  set text(font: "Inria Serif")
+  show "something cool": [Typst]
+  doc
+}
 
 #show: template
 I am learning something cool today.
 It's going great so far!
 ```
 
-Just like we already discovered in the previous chapter, set rules will apply to
-everything within their content block. Since the everything show rule passes our
-whole document to the `template` function, the text set rule and string show
-rule in our template will apply to the whole document. Let's use this knowledge
-to create a template that reproduces the body style of the paper we wrote in the
-previous chapter.
+Just like we already discovered in the previous chapter, set rules will apply
+to everything within their scope. Since the global show rule passes our whole
+document to the `template` function, the text set rule and string show rule in
+our template will apply to the whole document.
+
+We used a curly-braced code block instead of a content block. This way, we
+don't need to prefix all set rules and function calls with a `#`. This also
+removes the implicit spaces that are naturally introduced in the markup mode.
+In exchange, we cannot write markup directly in the code block anymore.
+
+Let's use this knowledge to create a template that reproduces the body style of
+the paper we wrote in the previous chapter.
 
 ```example
 #let conf(title, doc) = {
   set page(
     paper: "us-letter",
->>> margin: auto,
-    header: align(
-      right + horizon,
-      title
-    ),
+    header: align(right, title),
     columns: 2,
 <<<     ...
   )
   set par(justify: true)
   set text(
+    11pt,
     font: "Libertinus Serif",
-    size: 11pt,
   )
 
   // Heading show rules.
 <<<   ...
->>>  show heading.where(
->>>    level: 1
->>>  ): it => block(
->>>    align(center,
->>>      text(
->>>        13pt,
->>>        weight: "regular",
->>>        smallcaps(it.body),
->>>      )
->>>    ),
->>>  )
->>>  show heading.where(
->>>    level: 2
->>>  ): it => box(
->>>    text(
->>>      11pt,
->>>      weight: "regular",
->>>      style: "italic",
->>>      it.body + [.],
->>>    )
->>>  )
+>>>  show heading.where(level: 1): set align(center)
+>>>  show heading.where(level: 1): set text(13pt, weight: "regular")
+>>>  show heading.where(level: 1): it => block(smallcaps(it.body))
+>>>
+>>>  show heading.where(level: 2): set text(11pt, weight: "regular", style: "italic")
+>>>  show heading.where(level: 2): it => [#it.body.]
 
   doc
 }
@@ -154,24 +144,17 @@ previous chapter.
 >>> #lorem(200)
 ```
 
-We copy-pasted most of that code from the previous chapter. The two differences
-are this:
+We copied most of that code from the previous chapter. However, now we wrapped
+everything in the function `conf` using a global show rule. The function applies
+a few set and show rules and echoes the content it has been passed at the end.
 
-1. We wrapped everything in the function `conf` using an everything show rule.
-   The function applies a few set and show rules and echoes the content it has
-   been passed at the end.
-
-2. Moreover, we used a curly-braced code block instead of a content block. This
-   way, we don't need to prefix all set rules and function calls with a `#`. In
-   exchange, we cannot write markup directly in the code block anymore.
-
-Also note where the title comes from: We previously had it inside of a variable.
+Also note where the title comes from: we previously had it inside of a variable.
 Now, we are receiving it as the first parameter of the template function. To do
 so, we passed a closure (that's a function without a name that is used right
-away) to the everything show rule. We did that because the `conf` function
-expects two positional arguments, the title and the body, but the show rule will
-only pass the body. Therefore, we add a new function definition that allows us
-to set a paper title and use the single parameter from the show rule.
+away) to the global show rule. We did that because the `conf` function expects
+two positional arguments: the title and the body, but the show rule will only
+pass the body. Therefore, we add a new function definition that allows us to set
+a paper title and use the single parameter from the show rule.
 
 ## Templates with named arguments { #named-arguments }
 Our paper in the previous chapter had a title and an author list. Let's add
@@ -230,6 +213,9 @@ multiple arguments for the grid. We can do that by using the
 [`spread` operator]($arguments). It takes an array and applies each of its items
 as a separate argument to the function.
 
+Let's also include some PDF metadata. We can achieve this by using
+the [`document`] function and specifying fields such as `title` and `author`.
+
 The resulting template function looks like this:
 
 ```typ
@@ -239,12 +225,15 @@ The resulting template function looks like this:
   abstract: [],
   doc,
 ) = {
+  set document(title: title, author: authors.map(author => author.name))
   // Set and show rules from before.
->>> #set page(columns: 2)
 <<<   ...
 
+  {
     set align(center)
-  text(17pt, title)
+    set par(justify: false)
+
+    block(text(17pt, strong(title)))
 
     let count = authors.len()
     let ncols = calc.min(count, 3)
@@ -258,12 +247,11 @@ The resulting template function looks like this:
       ]),
     )
 
-  par(justify: false)[
-    *Abstract* \
-    #abstract
-  ]
+    strong[Abstract]
+    linebreak()
+    abstract
+  }
 
-  set align(left)
   doc
 }
 ```
@@ -291,49 +279,26 @@ call.
 >>>   abstract: [],
 >>>   doc,
 >>> ) = {
->>>  set text(font: "Libertinus Serif", 11pt)
->>>  set par(justify: true)
+>>>   set document(title: title, author: authors.map(author => author.name))
 >>>   set page(
 >>>     "us-letter",
->>>    margin: auto,
->>>    header: align(
->>>      right + horizon,
->>>      title
->>>    ),
+>>>     header: align(right, title),
 >>>     numbering: "1",
 >>>     columns: 2,
 >>>   )
+>>>   set par(justify: true)
+>>>   set text(11pt, font: "Libertinus Serif")
 >>>
->>>  show heading.where(
->>>    level: 1
->>>  ): it => block(
->>>    align(center,
->>>      text(
->>>        13pt,
->>>        weight: "regular",
->>>        smallcaps(it.body),
->>>      )
->>>    ),
->>>  )
->>>  show heading.where(
->>>    level: 2
->>>  ): it => box(
->>>    text(
->>>      11pt,
->>>      weight: "regular",
->>>      style: "italic",
->>>      it.body + [.],
->>>    )
->>>  )
+>>>   show heading.where(level: 1): set align(center)
+>>>   show heading.where(level: 1): set text(13pt, weight: "regular")
+>>>   show heading.where(level: 1): it => block(smallcaps(it.body))
 >>>
->>>  place(
->>>    top,
->>>    float: true,
->>>    scope: "parent",
->>>    clearance: 2em,
->>>    {
->>>      set align(center)
->>>      text(17pt, title)
+>>>   show heading.where(level: 2): set text(11pt, weight: "regular", style: "italic")
+>>>   show heading.where(level: 2): it => [#it.body.]
+>>>
+>>>   place(top + center, float: true, scope: "parent", clearance: 2em, {
+>>>     set par(justify: false)
+>>>     block(text(17pt, title))
 >>>     let count = calc.min(authors.len(), 3)
 >>>     grid(
 >>>       columns: (1fr,) * count,
@@ -344,19 +309,15 @@ call.
 >>>         #link("mailto:" + author.email)
 >>>       ]),
 >>>     )
->>>      par(justify: false)[
->>>        *Abstract* \
->>>        #abstract
->>>      ]
->>>    },
->>>  )
+>>>     strong[Abstract]
+>>>     linebreak()
+>>>     abstract
+>>>   })
 >>>   doc
 >>> }
 <<< #import "conf.typ": conf
 #show: conf.with(
-  title: [
-    Towards Improved Modelling
-  ],
+  title: [Towards Improved Modelling],
   authors: (
     (
       name: "Theresa Tungsten",
@@ -397,7 +358,7 @@ that define reusable document styles. You've made it far and learned a lot. You
 can now use Typst to write your own documents and share them with others.
 
 We are still a super young project and are looking for feedback. If you have any
-questions, suggestions or you found a bug, please let us know
+questions, suggestions, or you found a bug, please let us know
 in the [Forum](https://forum.typst.app/),
 on our [Discord server](https://discord.gg/2uDybryKPe),
 on [GitHub](https://github.com/typst/typst/),

tests/ref/html/image-jpg-html-base64.html

@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+  </head>
+  <body><img src="data:image/jpeg;base64,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" alt="The letter F"></body>
+</html>

tests/ref/html/image-scaling-methods.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+  </head>
+  <body>
+    <div style="display: flex; flex-direction: row; gap: 4pt"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAIAAADZSiLoAAAAKUlEQVR4AQEeAOH/AP8AAAD/AAAA/wCAAAAAgAAAAIAAgIAAAICAgACAcFMHfiTGz0oAAAAASUVORK5CYII=" style="width: 28.346456692913385pt"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAIAAADZSiLoAAAAKUlEQVR4AQEeAOH/AP8AAAD/AAAA/wCAAAAAgAAAAIAAgIAAAICAgACAcFMHfiTGz0oAAAAASUVORK5CYII=" style="image-rendering: smooth; width: 28.346456692913385pt"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAIAAADZSiLoAAAAKUlEQVR4AQEeAOH/AP8AAAD/AAAA/wCAAAAAgAAAAIAAgIAAAICAgACAcFMHfiTGz0oAAAAASUVORK5CYII=" style="image-rendering: pixelated; width: 28.346456692913385pt"></div>
+  </body>
+</html>

tests/suite/visualize/image.typ

@@ -9,6 +9,9 @@
 #set page(height: 60pt)
 #image("/assets/images/tiger.jpg")
 
+--- image-jpg-html-base64 html ---
+#image("/assets/images/f2t.jpg", alt: "The letter F")
+
 --- image-sizing ---
 // Test configuring the size and fitting behaviour of images.
 
@@ -128,7 +131,7 @@ A #box(image("/assets/images/tiger.jpg", height: 1cm, width: 80%)) B
   width: 1cm,
 )
 
---- image-scaling-methods ---
+--- image-scaling-methods render html ---
 #let img(scaling) = image(
   bytes((
     0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF,
@@ -144,14 +147,26 @@ A #box(image("/assets/images/tiger.jpg", height: 1cm, width: 80%)) B
   scaling: scaling,
 )
 
-#stack(
-  dir: ltr,
-  spacing: 4pt,
+#let images = (
   img(auto),
   img("smooth"),
   img("pixelated"),
 )
 
+#context if target() == "html" {
+  // TODO: Remove this once `stack` is supported in HTML export.
+  html.div(
+    style: "display: flex; flex-direction: row; gap: 4pt",
+    images.join(),
+  )
+} else {
+  stack(
+    dir: ltr,
+    spacing: 4pt,
+    ..images,
+  )
+}
+
 --- image-natural-dpi-sizing ---
 // Test that images aren't upscaled.
 // Image is just 48x80 at 220dpi. It should not be scaled to fit the page