lib/std/Io.zig             | 169 +++++++++++++++++++++++---------
 lib/std/Io/File.zig        |   2 +-
 lib/std/Io/File/Reader.zig |  22 +----
 lib/std/Io/Threaded.zig    | 151 +++++++++++++++++++---------
 lib/std/process/Child.zig  |  72 +++++++-------
 5 files changed, 258 insertions(+), 158 deletions(-)