Ensure single space before module name

src/runestone.jl

@@ -1232,7 +1232,10 @@ end
 # global, const
 function spaces_around_keywords(ctx::Context, node::Node)
     is_leaf(node) && return nothing
-    keyword_set = KSet"where do mutable struct abstract primitive type function if elseif catch while return local global const"
+    keyword_set = KSet"""
+    where do mutable struct abstract primitive type function if elseif catch while return
+    local global const module baremodule
+    """
     if !(kind(node) in keyword_set)
         return nothing
     end
@@ -1331,7 +1334,7 @@ function spaces_around_keywords(ctx::Context, node::Node)
                 @assert false # Unreachable?
             else
                 # Reachable in e.g. `T where{T}`, `if(`, ... insert space
-                @assert kind(node) in KSet"where if elseif while do function return local global"
+                @assert kind(node) in KSet"where if elseif while do function return local global module baremodule"
                 any_changes = true
                 if kids′ === kids
                     kids′ = kids[1:(i - 1)]
@@ -3001,10 +3004,10 @@ function indent_module(ctx::Context, node::Node; do_indent::Bool = true)
     space_idx = 2
     space_node = kids[space_idx]
     if kind(space_node) === K"Whitespace"
-        # Now we need an identifier or var"
+        # Now we need an identifier, var" or parens...
         id_idx = 3
         id_node = kids[id_idx]
-        @assert kind(id_node) in KSet"Identifier var"
+        @assert kind(id_node) in KSet"Identifier var parens"
         block_idx = 4
     else
         # This can be reached if the module name is interpolated or parenthesized, for

test/runtests.jl

@@ -507,6 +507,8 @@ end
         @test format_string("f()$(sp)do; y end") == "f() do;\n    y\nend"
         @test format_string("function f()\n    return$(sp)1\nend") == "function f()\n    return 1\nend"
         @test format_string("function f()\n    return$(sp)\nend") == "function f()\n    return\nend"
+        @test format_string("module$(sp)A\nend") == "module A\nend"
+        @test format_string("module$(sp)(A)\nend") == "module (A)\nend"
         for word in ("local", "global"), rhs in ("a", "a, b", "a = 1", "a, b = 1, 2")
             word == "const" && rhs in ("a", "a, b") && continue
             @test format_string("$(word)$(sp)$(rhs)") == "$(word) $(rhs)"
@@ -528,6 +530,7 @@ end
     @test format_string("function f()\n    return(1)\nend") == "function f()\n    return (1)\nend"
     @test format_string("local(a)") == "local (a)"
     @test format_string("global(a)") == "global (a)"
+    @test format_string("module(A)\nend") == "module (A)\nend"
 end
 
 @testset "replace ∈ and = with in in for loops and generators" begin
@@ -712,8 +715,8 @@ end
             @test format_string("$(b)module \$A\n$(sp)x\n$(sp)end\nf") ==
                 "$(b)module \$A\n    x\nend\nf"
             # parenthesized module name (Why....)
-            @test format_string("$(b)module(A)\n$(sp)x\n$(sp)end\nf") ==
+            @test format_string("$(b)module$(sp)(A)\n$(sp)x\n$(sp)end\nf") ==
-                "$(b)module(A)\n    x\nend\nf"
+                "$(b)module (A)\n    x\nend\nf"
             @test format_string("$(b)module \$(A)\n$(sp)x\n$(sp)end\nf") ==
                 "$(b)module \$(A)\n    x\nend\nf"
             # single line module