[bug #65359] submake might will lose variable values if their names contain special char

[Martin Dorey]

Follow-up Comment #4, bug#65359 (group make):

As demonstrated by eg:

martind@stormy:~/tmp/make-65359$ cat Makefile
export BADGER = wombat
default:; echo BADGER = $$BADGER
martind@stormy:~/tmp/make-65359$ 


Variables are communicated to subprocesses, be they Make, the shell or
otherwise, via the environment.  There is no other way.


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