From 401932c18f72db086a1a9890d34efb2e48a42e35 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 12 Aug 2025 18:19:09 +0900
Subject: [PATCH] NMake needs caret to escape a hash sign

---
 common.mk            | 2 +-
 template/Makefile.in | 2 ++
 win32/Makefile.sub   | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/common.mk b/common.mk
index e2c3d72cc8..de90083c80 100644
--- a/common.mk
+++ b/common.mk
@@ -1539,7 +1539,7 @@ prepare-gems: $(HAVE_BASERUBY:yes=update-gems) $(HAVE_BASERUBY:yes=extract-gems)
 extract-gems: $(HAVE_BASERUBY:yes=update-gems) $(HAVE_BASERUBY:yes=outdate-bundled-gems)
 update-gems: $(HAVE_BASERUBY:yes=outdate-bundled-gems)
 
-split_option = -F"\s+|\#.*"
+split_option = -F"\s+|$(HASH_SIGN).*"
 
 update-gems$(sequential): PHONY
 	$(ECHO) Downloading bundled gem files...
diff --git a/template/Makefile.in b/template/Makefile.in
index ea6ab349b0..66ac10de1b 100644
--- a/template/Makefile.in
+++ b/template/Makefile.in
@@ -289,6 +289,8 @@ ABI_VERSION_HDR = $(hdrdir)/ruby/internal/abi.h
 
 CAT_DEPEND = sed -e 's/{\$$([^(){}]*)[^{}]*}//g' -e /AUTOGENERATED/q
 
+HASH_SIGN = \#
+
 .SUFFIXES: .inc .h .c .y .i .$(ASMEXT) .$(DTRACE_EXT)
 
 all:
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index 4dc63a99f2..664d54e5ff 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -464,6 +464,7 @@ ASMEXT = asm
 
 INSTALLED_LIST= .installed.list
 
+HASH_SIGN = ^#
 SRC_FILE = $(<:\=/)
 OS_SRC_FILE = $(<:/=\)
 DEST_FILE = $(@:\=/)