googlefonts / googlefonts/fontc

we're generating way more markpos rules

Open
#1,862 0 comments 0 reactions 0 assignees View on GitHub
crater
Dominant language
Rust
Stars
193
Forks
21
Avg merge
1d 17h
Merged PRs (30d)
65

Description

I thought this might be a failure to respect disabling anchor propagation or something similar, but we appear to be propogating just fine? The rules we're generating make sense, so it could be that python is incorrectly deciding to skip them.

```
python3 -m ttx_diff 'https://github.com/indestructible-type/Bodoni?30ce6cdc35#sources/BodoniModa.glyphs'
```

Contributor guide

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Research direction

Reproduce the issue with `python3 -m ttx_diff 'https://github.com/indestructible-type/Bodoni?30ce6cdc35#sources/BodoniModa.glyphs'`. Compare the generated markpos rules and trace anchor propagation to determine where Python may be skipping rules; done means explaining the unexpectedly high rule count and correcting that behavior if confirmed.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, rust
Domain
compilers, tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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