From 3767e3a3302d745349eff8cfe45411f03e13de43 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Tue, 1 Sep 2020 23:06:01 +0200
Subject: patch 8.2.1562: Vim9: error when using "%" where a buffer is expected

Problem:    Vim9: error when using "%" where a buffer is expected.
Solution:   Add tv_get_buf_from_arg(). (closes #6814)
---
 src/typval.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/typval.c')

diff --git a/src/typval.c b/src/typval.c
index d1732f2b7..c7cfd4116 100644
--- a/src/typval.c
+++ b/src/typval.c
@@ -1562,4 +1562,23 @@ tv_get_buf(typval_T *tv, int curtab_only)
     return buf;
 }
 
+/*
+ * Like tv_get_buf() but give an error message is the type is wrong.
+ */
+    buf_T *
+tv_get_buf_from_arg(typval_T *tv)
+{
+    buf_T *buf;
+
+    ++emsg_off;
+    buf = tv_get_buf(tv, FALSE);
+    --emsg_off;
+    if (buf == NULL
+	    && tv->v_type != VAR_NUMBER
+	    && tv->v_type != VAR_STRING)
+	// issue errmsg for type error
+	(void)tv_get_number(tv);
+    return buf;
+}
+
 #endif // FEAT_EVAL
-- 
cgit v1.2.1