Multiple module declaration causes unexpected behavior

[kaz-utashiro]

This works fine.

$ jot 10 | optex -Mdebug column -Mxform --xform-encode ansi -x
optex: load /Users/utashiro/.optex.d/column.rc
@ARGV = -Mxform --xform-encode ansi -x
@ARGV =  -Mutil::filter --psub App::optex::xform::encode=mode=$<shift> ansi -x
@ARGV =  -Mutil::filter --psub App::optex::xform::encode=mode=ansi -x
@ARGV = -Mutil::filter --psub App::optex::xform::encode=mode=ansi
@ARGV =   --psub App::optex::xform::encode=mode=ansi -x
@ARGV =  -Mutil::filter --psub App::optex::xform::encode=mode=ansi -x
@ARGV = -Mutil::filter --psub
@ARGV =   --psub App::optex::xform::encode=mode=ansi -x
@ARGV =  &set(PREFORK=&$<shift>) App::optex::xform::encode=mode=ansi -x
@ARGV =   -x
optex: exec column -x
1	2	3	4	5	6	7	8	9	10

But putting -Mutil::filter option to optex causes error:

$ jot 10 | optex -Mutil::filter -Mdebug column -Mxform --xform-encode ansi -x
optex: load /Users/utashiro/.optex.d/column.rc
@ARGV = -Mxform --xform-encode ansi -x
@ARGV =  -Mutil::filter --psub App::optex::xform::encode=mode=$<shift> ansi -x
@ARGV =  -Mutil::filter --psub App::optex::xform::encode=mode=ansi -x
@ARGV = -Mutil::filter --psub App::optex::xform::encode=mode=ansi
@ARGV =   --psub App::optex::xform::encode=mode=ansi -x
@ARGV =  -Mutil::filter --psub App::optex::xform::encode=mode=ansi -x
@ARGV = -Mutil::filter --psub
@ARGV =   --psub App::optex::xform::encode=mode=ansi -x
optex: exec column --psub App::optex::xform::encode=mode=ansi -x
column: illegal option -- -
usage: column [-tx] [-c columns] [-s sep] [file ...]

Putting same module for subcommand does not effect:

$ jot 10 | optex -Mdebug column -Mutil::filter -Mxform --xform-encode ansi -x
optex: load /Users/utashiro/.optex.d/column.rc
@ARGV = -Mutil::filter -Mxform --xform-encode ansi -x
@ARGV = -Mxform --xform-encode ansi -x
@ARGV =  -Mutil::filter --psub App::optex::xform::encode=mode=$<shift> ansi -x
@ARGV =  -Mutil::filter --psub App::optex::xform::encode=mode=ansi -x
@ARGV = -Mutil::filter --psub App::optex::xform::encode=mode=ansi
@ARGV =   --psub App::optex::xform::encode=mode=ansi -x
@ARGV =  -Mutil::filter --psub App::optex::xform::encode=mode=ansi -x
@ARGV = -Mutil::filter --psub
@ARGV =   --psub App::optex::xform::encode=mode=ansi -x
@ARGV =  &set(PREFORK=&$<shift>) App::optex::xform::encode=mode=ansi -x
@ARGV =   -x
optex: exec column -x
1	2	3	4	5	6	7	8	9	10