clarify the position argument for fs.read
What happen to the file position after a read using a position null or integer was not clear and you can assume that the cursor of the file descriptor is updated even if position is an integer. close #8397 (closed)
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines