thread 'main' panicked at helix-core/src/transaction.rs:499:9:

[ElYaiko]

Summary

Helix crashes

Reproduction Steps

I was writing and it crashed

Helix log

thread 'main' panicked at helix-core/src/transaction.rs:499:9:
Positions [(2944, BeforeSticky)] are out of range for changeset len 2943!
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Platform

Linux

Terminal Emulator

st-256color

Installation Method

source

Helix Version

helix 24.7 (be2884d)

[the-mikedavis]

Without a backtrace or reproduction case it's impossible to tell what's the cause. If you can find a way to reproduce this reliably please post the steps

[aral]

Just ran into this on latest macOS, running Helix under WesTerm.

Although the error message is ever so slightly different (same line/column):

thread 'main' panicked at helix-core/src/transaction.rs:499:9:
  Positions [(1318, AfterSticky), (1331, BeforeSticky)] are out of range for changeset

Unfortunately, no backtrace as it’s a random crash and I wasn’t already running with RUST_BACKTRACE=1. Is there any way to get a backtrace after the fact to help diagnose random crashes like this (or should we always be running with the backtrace option?)

[the-mikedavis]

There isn't a way to go back and salvage a backtrace AFAIK. You can set RUST_BACKTRACE=1 or RUST_BACKTRACE=full globally so if there is a panic you see a backtrace. For this bug though I suspect the backtrace might not be enough to figure out the cause - for this one we might need a reproduction case or an idea of what the last few commands executed were