UI is very slow after creating a large character variable

[dfalbel]

Positron Version:

Positron Dev Version: 2024.09.0 build 0
Code - OSS Version: 1.92.0
Commit: Unknown
Date: Unknown
Electron: 30.1.2
Chromium: 124.0.6367.243
Node.js: 20.14.0
V8: 12.4.254.20-electron.0
OS: Darwin arm64 23.5.0

If you read a large text file into a single string with eg (readr::read_file) the UI becomes almost unusable. A reprex:

x <- paste(1:5e6, collapse = "-")

Screen.Recording.2024-09-04.at.13.54.01.mov

This doesn't happen with Python, eg. if you do x = "-".join(["---------"]*1_000_000).

We should probably limit the size of the string we send to the front-end, or like RStudio, show something like:

[testlabauto]

Verified Fixed

Positron Version(s) : 2024.12.0-66
OS Version          : OSX

Test scenario(s)

UI no longer becomes sluggish after executing reprex

Link(s) to TestRail test cases run or created: