From 803dbff03b7c30f276f6b8923b1c6b0a28e7b4f6 Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Tue, 24 Mar 2026 20:13:28 +0100
Subject: cpp: support directives within macro argument list

Undefined behavior by the standard but a GNU extension.
---
 src/u_io.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/u_io.c')

diff --git a/src/u_io.c b/src/u_io.c
index 1dccb9d..2eada7e 100644
--- a/src/u_io.c
+++ b/src/u_io.c
@@ -562,6 +562,8 @@ vbfmt(WriteBuf *out, const char *fmt, va_list ap)
                   n += tok->len;
                } else if (aisprint(tok->t)) {
                   n += bputc(buf, tok->t);
+               } else if (tok->t == '\n') {
+                  n += bwriteS(buf, "<newline>");
                } else {
                   n += bwriteS(buf, "??");
                }
-- 
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