The cmd /? help page says that the special characters that require quotes are:

I've just run into similar problem with arc liberate - mapped class names where starting with a space and missing last letter.

Specific link to the source, for future reference: http://git.php.net/?p=php-src.git;a=blob;f=ext/standard/exec.c;h=6106fe2c86bb687979e36e2070a99283cc0a0878;hb=HEAD#l365

Closed by commit rPHU43a0b6d17bb0.

Basically, double quotes disappear when passed through escapeshellarg. The command for history basically becomes:

The history support is useful. I might be able to find out what's happening.

Specifically, the history feature allows you to press the up/down arrow keys to select previous answers you've given to the prompt.

We have a piece of code which does a bunch of bash wizardry to try to fake history on these prompts. I think we should just remove the history feature; it doesn't seem valuable enough to justify figuring out what's going on here and working around it.

I've run into this as well occasionally at my work. We never isolated the conditions (seems to be some combination of windows and gitbash, but it works for some people)

It should just take any excuse you type after the prompt. Does it seem like it's crashing PHP? anything in the error logs?

Hi All,
The "Arcanist User Guide: Windows" page explicitly calls out in the first sentence that arcanist is intended to work in git bash. However, this bug makes it pretty unusable in that environment. Can you guys perhaps change the docs to reflect that it's not intended to work there? Also, for extra bonus points, add a link to this bug.

Tinkered with this again today, really frustrating trying to get phutil lint to work at all on windows.