vscode: Freeze when fjfj -> jfjf

VSCode Version: 1.42.1 (user setup)
OS Version: Windows_NT x64 10.0.18363

Steps to Reproduce:

ctrl + n to open empty document
type f and j for about 60 characters, begin with the f and stop with the j
Enter to create a new line
type f and j again, but start with j this time
VScode should crash or freeze

Does this issue occur when all extensions are disabled?: Yes

About this issue

Original URL
State: closed
Created 4 years ago
Comments: 20 (10 by maintainers)

Commits related to this issue

early check for strong first matches, helps with https://github.com/microsoft/vscode/issues/91807 — committed to microsoft/vscode by jrieken 4 years ago

Most upvoted comments

@jrieken I was not able to reproduce, but it has nothing to do with the typing itself, it has to do with completions scoring. I was able to open the CPU profile from @deepak1556 and it looks like fuzzy scoring in suggestions (presumambly due to word suggestions) is the culprit:

alexdima on Apr 7, 2020

I am able to repro it on macOS as well, attaching the profile keypress-freeze-91807.zip

The issue is also seen on monaco editor with both firefox and chrome, so not an issue specific to the runtime, looping in @alexdima

deepak1556 on Apr 3, 2020