From d0cb919bdbb88ec3dbfcd96d77432dc7647a77c3 Mon Sep 17 00:00:00 2001
From: nick <nickrallison1@gmail.com>
Date: Fri, 2 Oct 2026 13:07:18 -0600
Subject: [PATCH] read_verilog: fix spaces in macros being deleted

---
 frontends/verilog/preproc.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/frontends/verilog/preproc.cc b/frontends/verilog/preproc.cc
index e729f0b0c..f8137ac2d 100644
--- a/frontends/verilog/preproc.cc
+++ b/frontends/verilog/preproc.cc
@@ -452,9 +452,13 @@ static void input_file(std::istream &f, std::string filename)
 // the argument list); false if we finished with ','.
 static bool read_argument(std::string &dest)
 {
+	skip_spaces(true);
 	std::vector<char> openers;
 	for (;;) {
-		skip_spaces(true);
+		std::string skipped = skip_spaces(true);
+		if (skipped != "") {
+			dest += " ";
+		}
 		std::string tok = next_token(true);
 		if (tok == ")") {
 			if (openers.empty()) {