Missing package add prompt: Restrict which exprs to search in (#43457)

(cherry picked from commit 8f192bd)

Author: IanButterworth

stdlib/REPL/src/REPL.jl

@@ -193,7 +193,9 @@ function modules_to_be_loaded(ast::Expr, mods::Vector{Symbol} = Symbol[])
         end
     end
     for arg in ast.args
-        arg isa Expr && modules_to_be_loaded(arg, mods)
+        if arg isa Expr && arg.head in [:block, :if, :using, :import]
+            modules_to_be_loaded(arg, mods)
+        end
     end
     filter!(mod -> !in(String(mod), ["Base", "Main", "Core"]), mods) # Exclude special non-package modules
     return unique(mods)

stdlib/REPL/test/repl.jl

@@ -1364,5 +1364,14 @@ end
 
         mods = REPL.modules_to_be_loaded(Base.parse_input_line("Foo"))
         @test isempty(mods)
+
+        mods = REPL.modules_to_be_loaded(Base.parse_input_line("@eval using Foo"))
+        @test isempty(mods)
+        mods = REPL.modules_to_be_loaded(Base.parse_input_line("begin using Foo; @eval using Bar end"))
+        @test mods == [:Foo]
+        mods = REPL.modules_to_be_loaded(Base.parse_input_line("Core.eval(Main,\"using Foo\")"))
+        @test isempty(mods)
+        mods = REPL.modules_to_be_loaded(Base.parse_input_line("begin using Foo; Core.eval(Main,\"using Foo\") end"))
+        @test mods == [:Foo]
     end
 end