From: Christian Brabandt <cb@256bit.org>
Date: Sun, 18 Jan 2026 14:03:41 +0000 (+0000)
Subject: patch 9.1.2091: Ruby integration does not work correctly
X-Git-Tag: v9.1.2091^0
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3b67993a64ba1e74da9e2b456228d875d4624b6f;p=thirdparty%2Fvim.git

patch 9.1.2091: Ruby integration does not work correctly

Problem:  Ruby headers define HAVE_FSYNC, which leaks into Vim sources
          on Windows and changes conditional compilation of buf_T. This
          causes struct layout mismatches in if_ruby.c and results in a
          different offset for the b_p_bl property, making Vim::Buffer
          access fail (after v9.1.2024)
Solution: Undefine HAVE_FSYNC after including the Ruby headers.

related: #19019
closes:  #19206

Signed-off-by: Christian Brabandt <cb@256bit.org>
---

diff --git a/src/if_ruby.c b/src/if_ruby.c
index 60ca11188a..b5b0079ece 100644
--- a/src/if_ruby.c
+++ b/src/if_ruby.c
@@ -179,6 +179,9 @@
 #ifdef HAVE_DUP
 # undef HAVE_DUP
 #endif
+#ifdef HAVE_FSYNC
+# undef HAVE_FSYNC
+#endif
 
 // Avoid redefining TRUE/FALSE in vterm.h.
 #ifdef TRUE
diff --git a/src/version.c b/src/version.c
index ee2910062b..b85579b95d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2091,
 /**/
     2090,
 /**/