// Please use OnCustomFileName event when possible.
// You can inspect and modify (if needed) all file names, including bug report file name.
// See: http://www.eurekalog.com/help/eurekalog/topic_type_eevents_televcustomfilenamemeth.php
// (for bug report file - you are interested in AFileType = ftSavedBugReport)

// Alternatively, you can use such code:

uses
  EModules; 

// Global:

BugReportFileName := CurrentEurekaLogOptions.ExpandEnvVars(CurrentEurekaLogOptions.OutputLogFile(''));

// Event handler:

procedure OnExceptionNotify(const ACustom: Pointer; AExceptionInfo: TEurekaExceptionInfo; var AHandle: Boolean; var ACallNextHandler: Boolean);
var
  BugReportFileName: String;
begin
  BugReportFileName := AExceptionInfo.Options.ExpandEnvVars(AExceptionInfo.Options.OutputLogFile(''));
end;

// Be aware, that global code can not expand some variables (such as %BugID% - because those does not exist outside of exception processing code).