Revert "Hide public implementation of rb_io. (#9568)" (#10283)
rb_io
This reverts commit 9ab1fa3bf570bf19b0d6808adf12e965aacc6d83.
Revert "Hide public implementation of
rb_io
. (#9568)" (#10283)This reverts commit 9ab1fa3bf570bf19b0d6808adf12e965aacc6d83.