Reading from files in while loops broken since 3.39.0

[andrewimeson]

Description

This was originally reported in #1865 , but it looks like it got closed prematurely. The issue was reproducible in the upstream mvdan/sh interpreter (see mvdan/sh#1099) and was fixed at least as far as the simple case of directly invoking the interpreter goes. The issue still persists in Task, despite Task updating to the v3.10.0 release of Sh with the fix (#1874).

This first broke in Task v3.39.0, and is still broken in v3.40.1

Version

v3.40.1

Operating system

macOS

Experiments Enabled

No response

Example Taskfile

---
# yaml-language-server: $schema=https://taskfile.dev/schema.json
version: 3
tasks:
  test:
    desc: Reproduce issue
    cmds:
      - |
        echo hi
        $_ --version

        # Works
      - |
        echo "hi pipe" | while read -r line; do
            echo "$line"
        done

        # Hangs
      - |
        echo "hi file" > hi.txt

        while read -r line; do
            echo "$line"
        done < hi.txt

        echo "done"

  clean:
    desc: Clean files
    cmds:
      - |
        rm hi.txt

[andrewimeson]

I've confirmed this is only happening on macOS. I wrote a test and ran it in the GitHub Actions test workflow and it only fails on the two macOS matrices.

[andrewimeson]

This is a continuation of an upstream issue with mvdan.cc/sh - It's fixed, but a new release hasn't been made yet. I've opened mvdan/sh#1119.

CC: @vpereira and @siku4 who commented on #1865 about still having this issue

[andrewimeson]

Fixed in mvdan.cc/sh v3.11.0. It looks like Dependabot updated it in 8426f84, which got into Task v3.42.0