fsi variable is unavailable when parsing script files #227
Description
With FSAC 0.34.0 and F# 4.1.18 on Linux:
arch-vm[1353]:~% mono ~/.emacs.d/elpa/fsharp-mode-20170918.842/bin/fsautocomplete.exe -v
{"Kind":"info","Data":"Started (PID=109693)"}
parse "FsiBug.fsx"
do printfn "%A" fsi
<<EOF>>
{"Kind":"info","Data":"Background parsing started"}
{"Kind":"errors","Data":{"File":"/home/mdl/FsiBug.fsx","Errors":[{"FileName":"/home/mdl/FsiBug.fsx","StartLine":1,"EndLine":1,"StartColumn":17,"EndColumn":20,"Severity":"Error","Message":"The value or constructor 'fsi' is not defined. Maybe you want one of the following:\n fst","Subcategory":"typecheck"}]}}
parse "FsiBug2.fsx"
#r @"/usr/lib/mono/fsharp/FSharp.Compiler.Interactive.Settings.dll"
do printfn "%A" fsi
<<EOF>>
{"Kind":"info","Data":"Background parsing started"}
{"Kind":"errors","Data":{"File":"/home/mdl/FsiBug2.fsx","Errors":[]}}
Notice that it works if you explicitly reference FSharp.Compiler.Interactive.Settings.dll--but you should not have to do this. With the same version of FSAC running on the CLR on Windows, FsiBug.fsx parses fine, which is the correct/expected behavior.
Mono version info, just in case it's useful:
arch-vm[1002]:~% mono --version
Mono JIT compiler version 5.7.0 (master/5825342717c Mon Oct 2 17:12:43 JST 2017)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
TLS: __thread
SIGSEGV: normal
Notifications: epoll
Architecture: amd64
Disabled: none
Misc: softdebug
LLVM: supported, not enabled.
GC: sgen (concurrent by default)