From adbb0d94548114c24d61752525456312088bdd64 Mon Sep 17 00:00:00 2001
From: David Barton <davebarton@cityinthesky.co.uk>
Date: Wed, 12 Sep 2018 19:44:55 +0100
Subject: [PATCH] Fix `let a; end` statements (#10)

---
 src/SoftGlobalScope.jl | 6 +++++-
 test/runtests.jl       | 2 ++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/SoftGlobalScope.jl b/src/SoftGlobalScope.jl
index f6e1d4f..0be265c 100644
--- a/src/SoftGlobalScope.jl
+++ b/src/SoftGlobalScope.jl
@@ -86,13 +86,15 @@ else
 
     # Deal with assignments where the LHS is always local but the RHS might require global statements
     # For example, with previously defined a, let a = (a = 1) ; end -> let a = (global a = 1) ; end
-    function localassignment(ex::Expr, globals, locals, insertglobal)
+    function localassignment(ex, globals, locals, insertglobal)
         if isexpr(ex, :block)
             args = []
             for arg in ex.args
                 if isexpr(arg, :(=))
                     push!(args, Expr(arg.head, arg.args[1], _softscope(arg.args[2], globals, locals, insertglobal)))
                     union!(locals, localvars(arg.args[1]))
+                elseif arg isa Symbol
+                    push!(args, arg)
                 else
                     error("Unknown syntax - please file an issue in the SoftGlobalScope.jl repository")
                 end
@@ -100,6 +102,8 @@ else
             return Expr(ex.head, args...)
         elseif isexpr(ex, :(=))
             return Expr(ex.head, ex.args[1], _softscope(ex.args[2], globals, locals, insertglobal))
+        elseif ex isa Symbol
+            return ex
         else
             error("Unknown syntax - please file an issue in the SoftGlobalScope.jl repository")
         end
diff --git a/test/runtests.jl b/test/runtests.jl
index 4f7da3b..b6fc2b7 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -61,6 +61,8 @@ end
         @test softscope(TestMod, nl"sqrt((for i = 1:10; a+=1; end; a))") == nl"sqrt((for i = 1:10; global a+=1; end; a))"
         @test softscope(TestMod, nl"let a = (local b = 2; a = 1), b = (b = 3); end") == nl"let a = (local b = 2; global a = 1), b = (b = 3); end"
         @test softscope(TestMod, nl"f(a=(for i = 1:10; a+=1; end; a))") == nl"f(a=(for i = 1:10; global a+=1; end; a))"
+        @test softscope(TestMod, nl"let a; a = 1; end") == nl"let a; a = 1; end"
+        @test softscope(TestMod, nl"let a, b; a = 1; end") == nl"let a, b; a = 1; end"
     end
 end