Interactive Feature is Unusable

[mlr-msft]

I've been looking into the interactive feature of VimFStar and it appears unusable.

• It seems to have never have been written to support Windows outside of cygwin (e.g. lines of code like let s:path = system("echo $PATH") suggests this to be the case).
• I've tried using it on a Debian Jessie system. Pressing <F2> per the instructions results in the plugin never leaving the Always busy state.
• VimFStar provides no feedback regarding what's wrong nor does there seem to be any meaningful diagnostic code.

I've begun an attempt to address these issues. Before I get too deep into it, I wanted to ask:

• Does anyone currently use this feature? If nobody responds within a reasonable time period, I will assume not.
• If yes, is there any critical portion that needs to be preserved? I anticipate modifying a large amount of code in my effort to understand, fix, and inject usability into this feature; I don't want to unintentionally harm anyone's productivity in the process.

I will be making all of my changes in a fork and will produce a pull request when I believe I have something of quality.

Thanks in advance for any comments. :smile_cat:

[catalin-hritcu]

@SimonForest originally implemented this, but I don't think is still using it (or F*). @ngrimm: are you using it?

[ngrimm]

I'm currently not using the feature but I was using it before and plan to use it again. Of course I'm looking forward to possible improvements, so feel free to make any modifications.

[mlr-msft]

It took a while but I've learned that the interactive mode currently requires Cygwin to function. I use a native build of Vim. I'll document this in the README and close out the issue.