edtOnlineGroffVersionWindows.Text := reGroffVersion.Match[1];
      latestGroffWindowsUrl := reGroffVersion.Match[2];
    end else begin
      edtOnlineGroffVersionWindows.Text := 'error';
      btnDownloadGroffWindows.Enabled := False;
    end;

    // Note that there is no version check (nor precompiled downloads :-))
    // for non-Windows versions right now. Contributors welcome.
    reGroffStudioVersion := TRegExpr.Create('studio-win ([\d\.]+) (.*)$');
    reGroffStudioVersion.ModifierM := True;
    if reGroffStudioVersion.Exec(OnlineVersionsFile) then
    begin
      // Compare the two versions - ours and the online one:
      GroffHelpers.VerStrCompare(reGroffStudioVersion.Match[1], FileVerInfo.VersionStrings.Values['FileVersion'], HasVersionUpdate);
      if HasVersionUpdate > 0 then