Some issues with mktemp coreutils command on Windows

[fgimian]

Description

I used the following Taskfile.yml:

version: "3"
tasks:
  example:
    cmd: mktemp -d

Upon running task example, I see the following on Windows 11:

🕙 [ 11:36:51 AM ] ❯ task example
task: [example] mktemp -d
task: Failed to run task "example": GetFileAttributesEx /tmp: The system cannot find the file specified.

Furthermore, when executing mktemp --help via the same task, I see:

Usage: mktemp [options] [template]
  -d    Make a directory (shorthand)
  -directory
        Make a directory
  -dry-run
        Do everything save the actual create
  -p string
        Tmp directory to use. If this is not set, TMPDIR is used, else /tmp (shorthand)
  -prefix string
        add a prefix
  -q    Quiet: show no errors (shorthand)
  -quiet
        Quiet: show no errors
  -s string
        add a prefix (shorthand, 's' is for compatibility with GNU mktemp
  -suffix string
        add a suffix to the prefix (rather than the end of the mktemp file)
  -tmpdir string
        Tmp directory to use. If this is not set, TMPDIR is used, else /tmp
  -u    Do everything save the actual create (shorthand)
task: Failed to run task "example": flag: help requested

I expected two differences:

1. The appropriate temp directory on Windows should have been used by default (exposed via the $TEMP env var)
2. The help should have shown -- before each option instead of a single - which doesn't work correctly

I worked around this as follows:

mktemp --tmpdir "$TEMP" -d

Version

3.46.3

Operating system

Windows 11 Pro

Experiments Enabled

No response

Example Taskfile

version: "3"
tasks:
  example:
    cmd: mktemp -d

[trulede]

Thanks @fgimian I think its an issue with the u-root library, so I opened an issue there.