Debug Appveyor errors

[joerick]

No description provided.

[joerick]

Turns out the Appveyor PATH variable was highlighting a particularly fiddly bug in our environment variable handling. Backslashes in variables (very common in Windows paths) were able to 'escape' the outer quote. The new solution in bashlex_eval.py certainly smells better, and I've added a unit test to test the new solution to its limits :)

[YannickJadoul]

Wow, sounds like a horrible bug! Kudos for catching that! :-)

So, context.input does not contain the same as node.word, then? But part.pos still indexes into context.input and not into node.word? That seems quite counterintuitive.

[joerick]

So, context.input does not contain the same as node.word, then? But part.pos still indexes into context.input and not into node.word? That seems quite counterintuitive.

Yep! The indexes refer to the input string, but node.word is the token that the lexer found. I think. Anyway, it seems to work!

[YannickJadoul]

Wow, better get this in, then?