https://bugs.documentfoundation.org/show_bug.cgi?id=150118

            Bug ID: 150118
           Summary: Different behavior opening files having read-only
                    permissions on Windows vs. Linux
           Product: LibreOffice
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: LibreOffice
          Assignee: libreoffice-bugs@lists.freedesktop.org
          Reporter: mikekagan...@hotmail.com

Open a file that has no read-only *attribute*, but that is located in a
directory that has read-only permissions for the given user. For example, use a
document from share:

on Windows, it is at C:\Program Files\LibreOffice\share\template\shellnew
on Ubuntu, it is at opt/libreoffice7.3/share/template/common/internal

Both locations on both OSes are non-writable for non-elevated user. Or an empty
document could be created in such a location as a root/admin for testing.

Trying to open a document from such a document in LibreOffice on Ubuntu opens
the document in read-only mode (with an infobar), without any dialogs.

Trying to open a document from such a document in LibreOffice on Windows first
opens a dialog:

> Document file 'soffice.odt' is locked for editing by:
> 
> Unknown User
> 
> Open document read-only or open a copy of the document for editing.
> Select Notify to open read-only and get notified when the document becomes 
> editable.

On Windows, if the document in such a location *in addition* gets a read-only
*file attribute*, like running 'attrib +R "C:\Program
Files\LibreOffice\share\template\shellnew\soffice.odt"' as admin, it starts
opening the same way as on Linux: without any dialog, right into read-only mode
with an infobar.

It is likely because on Linux, the permissions are connected to file
attributes, while on Windows, ACL is unrelated to attributes; but the
difference in behavior in conceptually similar (same) situations is confusing
and inconvenient. E.g., it results in inconvenience (unneeded dialogs) when
opening files from read-only locations, like in
https://ask.libreoffice.org/t/read-only-is-on-purpose-but-libreoffice-always-ask-what-i-want-to-do/79795.

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