Program Contour slows syntax highlighting to a crawl
Nobody has claimed this yet.
- Dominant language
- Racket
- Stars
- 516
- Forks
- 103
- PR merge metrics
- No merged PRs in 30d
Description
Windows 11, DrRacket 8.6.0.9 (same problem has been there since 8.6 release).
Having Program Contour enabled slows syntax coloring to a few lines per second, vs. nearly instant on my system. Disabling program contour while the coloring is happening fixes the problem. Tested on a single Racket file with several thousand LOC.
Problem does not seem to appear on Apple Silicon and Linux.
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No file, test, or entry point is named. Start by reproducing the slowdown with Program Contour enabled on Windows 11 using a several-thousand-line Racket file, then compare syntax-highlighting performance with the feature disabled; done means coloring is responsive while Program Contour remains enabled.
Written by the indexing model from the issue text.
Assessment
- Domain
- desktop, devtools, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100