From f0860459ac668a420915bca1628da5e634797f3a Mon Sep 17 00:00:00 2001
From: Peter Gadfort <peter.gadfort@gmail.com>
Date: Sat, 18 Jan 2025 10:45:19 -0700
Subject: [PATCH] add support for using scratchpad value for flatten.separator
 in flatten command

---
 passes/techmap/flatten.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/passes/techmap/flatten.cc b/passes/techmap/flatten.cc
index 619fa4a68..3425509b1 100644
--- a/passes/techmap/flatten.cc
+++ b/passes/techmap/flatten.cc
@@ -357,6 +357,9 @@ struct FlattenPass : public Pass {
 
 		FlattenWorker worker;
 
+		if (design->scratchpad.count("flatten.separator"))
+			worker.separator = design->scratchpad_get_string("flatten.separator");
+
 		size_t argidx;
 		for (argidx = 1; argidx < args.size(); argidx++) {
 			if (args[argidx] == "-wb") {