lnav crashes when reading log though pipe

[erikced]

lnav version
v0.13.0
v0.13.1-beta3
On Fedora 42 and Debian 12, both in WSL

Describe the bug
A clear and concise description of what the bug is.
lnav crashes on a specific log file and only when read through a pipe, input redirection and reading the log directly works fine. I have reduced the log file to a minimal failing example, see below.

Slight variations of this will crash lnav 0.12.3 as well and although this specific example does not crash it appears to cause lnav to misbehave claiming to have captured several KB of data from stdin which does not sound quite right.

crash-2025-08-18-10-54-06.57709.log

To Reproduce
Steps to reproduce the behavior:

echo -e '00:00 a\n\n\n\n\n\n\n\n\n\n' | lnav

Or in an F42 container:

docker run --rm -ti fedora:42 sh -c "dnf -y install unzip && curl -LO https://github.com/tstack/lnav/releases/download/v0.13.1-beta3/lnav-0.13.1-beta3-linux-musl-x86_64.zip && unzip lnav-0.13.1-beta3-linux-musl-x86_64.zip && echo -e '00:00 a\n\n\n\n\n\n\n\n\n\n' | ./lnav-0.13.1-beta3/lnav"

[tstack]

I think I just ran into this and it should be fixed by 3f9be95

Thank you for the report!

[tstack]

Tested beta4 and it seems to be working, closing.

[erikced]

Tested beta4 and it seems to be working, closing.

I can confirm it beta4 fixes the issue both for the simplified test case and the actual logs I wanted to pipe in the first place. Thank you for the swift response.