File picker freezes trying to read named pipes

[NoraPerry]

Summary

If the file picker tries to preview a named pipe then helix will freeze until you write data to the pipe (most of the time 2 writes are needed).

Reproduction Steps

I tried this:

1. mkfifo mypipe
2. hx
3. <space>fmypipe

I expected this to happen:

Helix detects that the file is a named pipe and doesn't attempt to show a preview (at least not in a blocking way).

Instead, this happened:

Once the fuzzy search lands on the pipe, helix will freeze waiting for data to exist in the pipe.

Helix log

~/.cache/helix/helix.log

The log was blank.

Platform

Linux

Terminal Emulator

foot

Helix Version

helix 22.12