Funadmental Flaws inherent in the design of AtlasEngine #20649

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opened 2026-01-31 07:20:08 +00:00 by claunia · 0 comments
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Originally created by @AffluentOwl on GitHub (Oct 11, 2023).

Windows Terminal version

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Windows build number

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Other Software

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Steps to reproduce

  1. Install an OpenType font using contextual alternates like Numderline. https://thume.ca/numderline/
  2. Set the terminal font to this font
  3. Type 123456 in the terminal

Expected Behavior

The underlines properly display under digits in the thousands places as configured by the font.

Actual Behavior

The text displays as 123456 with no underlines.

Originally created by @AffluentOwl on GitHub (Oct 11, 2023). ### Windows Terminal version _No response_ ### Windows build number _No response_ ### Other Software _No response_ ### Steps to reproduce 1. Install an OpenType font using contextual alternates like Numderline. https://thume.ca/numderline/ 2. Set the terminal font to this font 3. Type 123456 in the terminal ### Expected Behavior The underlines properly display under digits in the thousands places as configured by the font. ### Actual Behavior The text displays as 123456 with no underlines. ![](https://blog.janestreet.com/commas-in-big-numbers-everywhere/numderline_header2.png)
claunia added the Needs-TriageIssue-Bug labels 2026-01-31 07:20:08 +00:00
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Reference: starred/terminal#20649