$findfile's combo of non-numeric $4 and $5 causes $5 to be ignored, in favor of using $4 as the /command parameter. However a non-numeric $4 becomes a /command parameter without benefit of $1- or $parms, and $5 seems completely ignored. If $5 contains $my_identifier it doesn't get triggered. Whichever is most backwards compatible, this should either be invalid syntax or $4 should be given the $1- and $parms:

Code:
//echo -a $findfile($mircdir,*.ini,0,echo 3 -a test $1 vs $parms,echo 4 -a test $1 vs $parms)


Because $4 is not seeing the $1-, having $4 being "@window $1-" is not being handled as if invalid syntax:

Code:
//window -c @test | window -e2l40 @test | echo -s test $findfile($mircdir,*.ini,0,@test $1-)
vs
//window -c @test | window -e2l40 @test | echo -s test $findfile($mircdir,*.ini,0,@test $1-,noop)