From ef5c8c715eb92ee4f1873af637f04b2e13851fd2 Mon Sep 17 00:00:00 2001
From: jan <jan@orange.mpxd.net>
Date: Sun, 8 Mar 2026 10:12:43 -0700
Subject: [PATCH] [Pather] add auto_render_append arg

---
 masque/builder/pather.py             | 8 ++++++--
 masque/test/test_advanced_routing.py | 2 +-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/masque/builder/pather.py b/masque/builder/pather.py
index df9a3f9..3478c32 100644
--- a/masque/builder/pather.py
+++ b/masque/builder/pather.py
@@ -63,7 +63,7 @@ class Pather(PortList):
     """
     __slots__ = (
         'pattern', 'library', 'tools', 'paths',
-        '_dead', '_logger', '_auto_render'
+        '_dead', '_logger', '_auto_render', '_auto_render_append'
     )
 
     pattern: Pattern
@@ -111,6 +111,7 @@ class Pather(PortList):
             name: str | None = None,
             debug: bool = False,
             auto_render: bool = False,
+            auto_render_append: bool = True,
             ) -> None:
         """
         Args:
@@ -122,10 +123,13 @@ class Pather(PortList):
             name: If specified, `library[name]` is set to `self.pattern`.
             debug: If True, enables detailed logging.
             auto_render: If True, enables immediate rendering of routing steps.
+            auto_render_append: If `auto_render` is True, determines whether
+                to append geometry or add a reference.
         """
         self._dead = False
         self._logger = PatherLogger(debug=debug)
         self._auto_render = auto_render
+        self._auto_render_append = auto_render_append
         self.library = library
         self.pattern = pattern if pattern is not None else Pattern()
         self.paths = defaultdict(list)
@@ -321,7 +325,7 @@ class Pather(PortList):
             self.plugged({portspec: plug_into})
 
         if self._auto_render:
-            self.render()
+            self.render(append=self._auto_render_append)
 
     def _get_tool_R(self, tool: Tool, ccw: SupportsBool, in_ptype: str | None, **kwargs) -> float:
         """ Probe a tool to find the lateral displacement (radius) of its bend. """
diff --git a/masque/test/test_advanced_routing.py b/masque/test/test_advanced_routing.py
index 7033159..91d6c3b 100644
--- a/masque/test/test_advanced_routing.py
+++ b/masque/test/test_advanced_routing.py
@@ -13,7 +13,7 @@ def advanced_pather() -> tuple[Pather, PathTool, Library]:
     lib = Library()
     # Simple PathTool: 2um width on layer (1,0)
     tool = PathTool(layer=(1, 0), width=2, ptype="wire")
-    p = Pather(lib, tools=tool)
+    p = Pather(lib, tools=tool, auto_render=True, auto_render_append=False)
     return p, tool, lib