13  Review Fixes

All six correctness issues reproduced during the 2026-08-27 review are fixed in this checkout. Their nine reproductions now live in tests/regressions/ and must pass with Typst 0.15.1. This page retains its original URL for existing links and records the behavior changes; it is not an inventory of outstanding failures.

13.1 Font-relative geometry

Geometric em components now resolve against surrounding text before zoom, clipping, polygon validation, port projection, or bounds arithmetic. Node minima/insets/radii, gate size/spacing, stroke thickness, edge label/highlight geometry, and decorative parts/marks all use this boundary. Manual .to-absolute() workarounds are no longer needed:

#set text(size: 10pt)
#typ.diagram(scale: 2, typ.edge(
  typ.node(0, 0, style: (shape: typ.shapes.diamond, min-size: 2em)),
  (2, 0), stroke: 0.1em + black,
))

Absolute-only, unlabeled geometry helpers remain usable without context. Mixed-sign dimensions are checked again after resolution; negative sizes still fail. Custom extension fields remain the builder’s responsibility. See Font-relative lengths.

13.2 Highlight bounds at acute joins

Bounds now include the maximum offset-centerline displacement and the band stroke’s miter extension. Single-segment curves receive the same allowance because their highlights are sampled into polylines. Rendering and bounds share the two miter limits, so changing one cannot silently invalidate the other. These conservative bounds can add whitespace around highlighted joins; they are not a pixel-tight ink crop.

13.3 Square-capped diagonal wire bounds

Open square-capped wires now reserve up to sqrt(2) times half their stroke thickness on each axis, covering a diagonal cap’s tangent and normal projections. Miter allowance can enlarge this further. Butt/round caps and closed node outlines retain their existing bounds.

13.4 Automatic config values

Passing auto now inherits the enclosing config value, including for node-styles and edge-styles. Without an enclosing value, the package default applies. Two existing meaningful automatic values are preserved: font-size: auto restores surrounding document text sizing and baseline: auto restores the calculated baseline. Use concrete values such as scale: 1 to reset other keys. Nested scopes still restore their parent.

13.5 Zero-sized built-in polygons

Built-in polygon builders supply a 1pt fitting fallback for any zero axis, before applying their template’s proportions and rotation. This preserves a valid outline when no label, inset, or minimum supplies an extent. Explicit nonzero dimensions remain unchanged. Custom polygon validity checks remain strict. Use shapes.empty when an invisible routing point is intended.

13.6 Circle fitting for box-like labels

The circle radius now contains the farthest corner of the measured label rectangle, including shifts from asymmetric padding. Larger explicit minima and the existing 1.2-axis clearance still win. A 20pt square therefore gets a radius of approximately 14.14pt, not 12pt; thin labels that already fit are unchanged. Unlabeled zero-size circles stay zero-sized.