Support empty inputs in NODE helper

prompt_control/nodes_lazy.py

@@ -212,10 +212,17 @@ def build_scheduled_prompts(graph, schedules, clip):
         magic_spec.replace(r"\;", "__ESCAPED_SEMICOLON__")
         extra_inputs = magic_spec.split(";") if magic_spec.strip() else []
         for e in extra_inputs:
+            e = e.strip()
+            if not e:
+                continue
             e = e.replace("__ESCAPED_SEMICOLON__", ";")
             name, jsondata = e.split(maxsplit=1)
+            jsondata = jsondata.strip()
             if not jsondata.strip():
                 continue
+            # From helper node:
+            if jsondata == "__EMPTY__":
+                continue
             try:
                 node.set_input(name.strip(), json.loads(jsondata.strip()))
             except ValueError as e:

prompt_control/nodes_tools.py

@@ -202,8 +202,11 @@ class PCLinkHelper(io.ComfyNode):
 
     @classmethod
     def execute(cls, text, **vars) -> io.NodeOutput:
-        for k, v in vars.items():
-            text = substitute_var(text, k, json.dumps(v))
+        for k in "abcdefghijklmn":
+            v = "__EMPTY__"
+            if k in vars:
+                v = json.dumps(vars[k])
+            text = substitute_var(text, k, v)
         return io.NodeOutput(text)
 
 

tests/test_graph.py

@@ -503,7 +503,7 @@ def test_textencode_custom():
 
 def test_textencode_custom_extra():
     r = te(
-        'NODE(CustomTextEncode, prompt, image ["1", 0]; option "test"; float [10.0:5.0:0.5])simple [test:0.1,0.5] prompt'
+        'NODE(CustomTextEncode, prompt, image ["1", 0]; option "test"; float [10.0:__EMPTY__:0.5])simple [test:0.1,0.5] prompt'
     )
     assert r == {
         "result": (["UID.0.0.8", 0],),
@@ -542,8 +542,7 @@ def test_textencode_custom_extra():
                     "clip": [0, 0],
                     "prompt": "simple  prompt",
                     "image": ["1", 0],
-                    "option": "test",
-                    "float": 5.0,
+                    "option": "test"
                 },
             },
             "UID.0.0.6": {