[Bug 47997] New: Allow setting $WINEDEBUG

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=47997

            Bug ID: 47997
           Summary: Allow setting $WINEDEBUG
           Product: Wine-Testbot
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: unknown
          Assignee: wine-bugs at winehq.org
          Reporter: fgouget at codeweavers.com
      Distribution: ---

To figure out why a test is failing in a TestBot Wine VM it would sometimes be
useful to be able to set $WINEDEBUG.

The trouble with $WINEDEBUG is that it can result in very large logs (e.g. if
set to +all or _relay). But then the tests can already generate large files by
looping on a printf() so that's not really a new issue, it's just less likely
to happen accidentally.

The way to deal with that would be to limit the size of the log and reports
that the TestBot retrieves from the VMs.

Notes:
* The TestBot already collects the whichever traces Wine puts out which would
typically be the FIXME()s and ERR()s. They are at the end of the "full task
log".
* So a workaround is to patch Wine to convert the relevant traces to FIXME()s.
That's not very practical if one does not initially know which ones are going
to be needed which is why being able to set $WINEDEBUG would be better.

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