Bug: grep does not work with [^...]

[Dmitry Lanin]

Bug: grep does not work with [^...]

Run the following command:
echo qwe | grep -E '[^r]'

Expected result:
qwe

Actual result:
-nothing-

-----------------------------------
cygwin DLL version: 2.10.0
base-cygwin          3.8-1
bash                 4.4.12-3
coreutils            8.26-2
cygutils             1.4.16-2
cygwin               2.10.0-1
grep                 3.0-2
-----------------------------------

Kind regards,
Dmitry


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