Cannot cd up multiple directories normally

[chrisant996]

Originally reported by @LucasMonastirsky and @ovasquez in cmderdev/cmder#2473

Current behavior

1.3.17

cd ../..     # goes up 2 directories [Correct]
cd ../../    # stays in the same directory [Incorrect]

Expected behavior

1.3.16 and 1.3.15 (and probably a lot more before)

cd ../..     # goes up 2 directories [Correct]
cd ../../    # goes up 2 directories [Correct]

[chrisant996]

I can reproduce this. Will look into it soon.

[chrisant996]

Wow. GetFileAttributesW(L"cd ../../") returns 0x10 indicating "the specified string is a directory".

Which actually makes sense since the final .. counteracts the preceding directory level, so the cd .. is interpreted as a parent directory that's being discarded.

Clink needs to be smarter about how it parses the command line to interpret whether a path has been typed.