diff --git a/src/eval2/eval2.c b/src/eval2/eval2.c
index 57d4efee..1abf8ded 100644
--- a/src/eval2/eval2.c
+++ b/src/eval2/eval2.c
@@ -1990,6 +1990,30 @@ e2_parse_from_string(Arena *arena, E2_ParseState *state, B32 identifier_is_type,
         }
       }
       
+      // rjf: try to resolve it as a macro argument
+      if(!identifier_mapped && state->top_task != 0 && state->top_task->expr_kind == E2_ExprKind_Macro)
+      {
+        U64 macro_arg_num = 0;
+        {
+          U64 num = 1;
+          for(String8Node *n = state->top_task->macro_arg_names.first; n != 0; n = n->next, num += 1)
+          {
+            if(str8_match(n->string, identifier, 0))
+            {
+              macro_arg_num = num;
+              break;
+            }
+          }
+        }
+        if(macro_arg_num != 0)
+        {
+          identifier_mapped = 1;
+          expr = e2_expr(arena, E2_ExprKind_MacroArg);
+          expr->macro_arg_num = (U32)macro_arg_num;
+          expr->string = identifier;
+        }
+      }
+      
       // rjf: build this as a leaf identifier expression - ask the caller if it's a type
       if(!identifier_mapped)
       {
diff --git a/src/eval2/eval2.h b/src/eval2/eval2.h
index 5594c8ec..e71bd30e 100644
--- a/src/eval2/eval2.h
+++ b/src/eval2/eval2.h
@@ -56,9 +56,8 @@ typedef enum E2_ParseStatus
   
   //- rjf: caller-provided info
   E2_ParseStatus_CheckIdentifierIsType,
-  E2_ParseStatus_NewMacro,
   E2_ParseStatus_FirstCallerRequest = E2_ParseStatus_CheckIdentifierIsType,
-  E2_ParseStatus_LastCallerRequest = E2_ParseStatus_NewMacro,
+  E2_ParseStatus_LastCallerRequest = E2_ParseStatus_CheckIdentifierIsType,
 }
 E2_ParseStatus;
 
@@ -328,6 +327,7 @@ struct E2_Expr
   E2_ExprNode *last_child;
   U64 child_count;
   E2_ExprKind kind;
+  U32 macro_arg_num;
   Rng1U64 src_range;
   String8 string;
 };
diff --git a/src/eval2/eval2.mdesk b/src/eval2/eval2.mdesk
index ad9c14b7..dc77b61c 100644
--- a/src/eval2/eval2.mdesk
+++ b/src/eval2/eval2.mdesk
@@ -5,6 +5,7 @@
 E2_ExprKindTable:
 {
   {Identifier     Null 0}
+  {MacroArg       Null 0}
   {TypeIdentifier Null 0}
   {Numeric        Null 0}
   {StringLiteral  Null 0}
diff --git a/src/eval2/generated/eval2.meta.c b/src/eval2/generated/eval2.meta.c
index a1faf05b..d36bd2f9 100644
--- a/src/eval2/generated/eval2.meta.c
+++ b/src/eval2/generated/eval2.meta.c
@@ -4,7 +4,7 @@
 //- GENERATED CODE
 
 C_LINKAGE_BEGIN
-E2_ExprKindInfo e2_expr_kind_info_table[41] =
+E2_ExprKindInfo e2_expr_kind_info_table[42] =
 {
 {0},
 {E2_ExprParseKind_Null, 0, str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp("")},
@@ -12,6 +12,7 @@ E2_ExprKindInfo e2_expr_kind_info_table[41] =
 {E2_ExprParseKind_Null, 0, str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp("")},
 {E2_ExprParseKind_Null, 0, str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp("")},
 {E2_ExprParseKind_Null, 0, str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp("")},
+{E2_ExprParseKind_Null, 0, str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp(""), str8_lit_comp("")},
 {E2_ExprParseKind_Null, 0, str8_lit_comp(""), str8_lit_comp("."), str8_lit_comp(""), str8_lit_comp("")},
 {E2_ExprParseKind_Binary, 1, str8_lit_comp(""), str8_lit_comp("["), str8_lit_comp("]"), str8_lit_comp("")},
 {E2_ExprParseKind_Call, 1, str8_lit_comp(""), str8_lit_comp("("), str8_lit_comp(")"), str8_lit_comp(",")},
diff --git a/src/eval2/generated/eval2.meta.h b/src/eval2/generated/eval2.meta.h
index 72f22fd6..8fa788b5 100644
--- a/src/eval2/generated/eval2.meta.h
+++ b/src/eval2/generated/eval2.meta.h
@@ -10,6 +10,7 @@ typedef enum E2_ExprKind
 {
 E2_ExprKind_Null,
 E2_ExprKind_Identifier,
+E2_ExprKind_MacroArg,
 E2_ExprKind_TypeIdentifier,
 E2_ExprKind_Numeric,
 E2_ExprKind_StringLiteral,
@@ -131,7 +132,7 @@ E2_TypeKind_LastMeta        = E2_TypeKind_MetaDescription,
 } E2_TypeKind;
 
 C_LINKAGE_BEGIN
-extern E2_ExprKindInfo e2_expr_kind_info_table[41];
+extern E2_ExprKindInfo e2_expr_kind_info_table[42];
 extern U8 e2_type_kind_basic_byte_size_table[61];
 extern String8 e2_type_kind_basic_string_table[61];
 
diff --git a/src/scratch/ryan_scratch.c b/src/scratch/ryan_scratch.c
index 3c9483a6..d7875e8a 100644
--- a/src/scratch/ryan_scratch.c
+++ b/src/scratch/ryan_scratch.c
@@ -43,10 +43,10 @@ entry_point(CmdLine *cmdline)
     // (A)
     // int & B
     // (1 + (int)&B)
+    s("bar(a, b) = a + b"),
     s("123, 456"),
     s("int32 == int32"),
     s("foo = 123"),
-    // s("bar(a, b) = a + b"),
     s("1 > 2"),
     s("1 ? \"Test\" : 888"),
     s("'a'"),
@@ -98,6 +98,12 @@ entry_point(CmdLine *cmdline)
         {
           str8_list_push(scratch.arena, &msgs, n->string);
         }
+        if(parse.status == E2_ParseStatus_CheckIdentifierIsType)
+        {
+          identifier_is_type = identifier_is_type || str8_match(parse.identifier, s("int32"), 0);
+          identifier_is_type = identifier_is_type || str8_match(parse.identifier, s("float32"), 0);
+          identifier_is_type = identifier_is_type || str8_match(parse.identifier, s("float64"), 0);
+        }
         if(e2_parse_status_is_terminal(parse.status))
         {
           break;