Ultra slow path conversion #323
Description
I've encountered several ultra slow path conversions under MSYS2, see the following example:
$ which python
/clang64/bin/python
$ time python -c "import sys; print(sys.argv)" "/c"
['-c', 'C:/']
python -c "import sys; print(sys.argv)" "/c" 0.01s user 0.00s system 37% cpu 0.040 total
$ time python -c "import sys; print(sys.argv)" "/\c"
['-c', '//c']
python -c "import sys; print(sys.argv)" "/\c" 0.01s user 0.00s system 0% cpu 2.753 totalI've tried the example several times under different shells (bash, zsh, etc.), seems the problem comes from msys2 itself
P.S.: my MSYS2_ARG_CONV_EXCL is unset