The operation of the batch mode is different from nmake

jom 1.1.2

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>dir/b
ab.txt
cd.txt
makefile.mak

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>type makefile.mak
.SUFFIXES: .txt

file_list = \
        ab.dat \
        cd.dat

all: $(file_list)

.txt.dat::
        type $< > test.dat 2>nul

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>nmake -nologo -f makefile.mak
        type ab.txt cd.txt  > test.dat 2>nul

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>jom -lf makefile.mak
        type ab.txt  > test.dat 2>nul
        type cd.txt  > test.dat 2>nul