Wrong hyphenation of German word "Staubeckenbegrenzungsmauer"

[orangenschalen]

Description

Using justification can lead to wrong hyphenation

#set page(
  paper: "a4",
  margin: 2.7cm,
)


#set text(
  font: "New Computer Modern",
  size: 13pt,
  lang: "de",
)
 
#set par(
  justify: true,
  justification-limits: (spacing: (min: 66.67% + 0pt, max: 150% + 0pt), tracking: (min: -0.01em, max: 0.015em))
)

Staubecke Staubecke Staubecke Staub Staubecke Staubecke Staubecke Staubeckenbegrenzungsmauer

Leads to a hyphenation of the last word as "Staube-ckenbegrenzungsmauer". "Staubecken" is ambiguous it could either be "dusty corners" and then hyphenated as "Staub-ek-ken" or be "water retention basin" and then hyphenated as "Stau-bek-ken". While testing, what Typst would do, it did a third thing, that is wrong no matter what.

The wrong hyphenation vanishes when the justification-limits are removed, therefore it is a bit hard to trigger.

hyphenationtest.pdf

Operating system

Linux, Web app

Typst version

• I am using the latest version of Typst

[Enivex]

This is unrelated to justification. The same hyphenation happens on https://typst.app/tools/hyphenate/.

Should probably be moved to https://github.com/typst/hypher @laurmaedje

[laurmaedje]

It's not related to justification, but does the same thing actually happen on https://typst.app/tools/hyphenate/? I minimized to this:

#set text(lang: "de", hyphenate: true)
#rect(fill: aqua, width: 2cm)[
  Staubeckenbegrenzungsmauer
]

Which gives "Staube-ckenbe-gren-zungs-mauer". But our online tool and a local hypher checkout both give me "Stau-be-cken-be-gren-zungs-mau-er". Strange.

[laurmaedje]

Okay, I'm dumb. I was just looking at the first hyphenation opportunity after "Stau". But it's taking the second one.

[Enivex]

Might wanna open an issue in https://github.com/hyphenation/tex-hyphen/issues