[bug #58918] background_image misdiagnoses non-existent file as having unsupported format

[Glenn Golden]

URL:
  <https://savannah.gnu.org/bugs/?58918>

                 Summary: background_image misdiagnoses non-existent file as
having unsupported format
                 Project: GNU GRUB
            Submitted by: grepfor
            Submitted on: Sat 08 Aug 2020 07:07:32 PM UTC
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 
                 Release: other
         Discussion Lock: Any
         Reproducibility: Every Time
         Planned Release: None

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Details:

This report pertains to GNU GRUB version 2.04

The "background_image" command mis-diagnoses a non-existent image file as
having "unsupported format", rather than stating that it is non-existent.

Steps to reproduce:

On grub commandline:

    background_image /some/nonexistent/file

produces the diagnostic message:

    error: bitmap file '/some/nonexistent/file' is of unsupported format.

Correct diagnosis is that the file doesn't exist.






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