Signed-off-by: Ioan-Adrian Ratiu <adrian.ratiu_at_ni.com>

---
 docs/libcurl/curl_formadd.3 |  5 ++++-
 include/curl/curl.h         |  6 +++++-
 lib/formdata.c              | 12 ++++++++++--
 3 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/docs/libcurl/curl_formadd.3 b/docs/libcurl/curl_formadd.3
index 5d1faa532..36fcf6b6b 100644
--- a/docs/libcurl/curl_formadd.3
+++ b/docs/libcurl/curl_formadd.3
@@ -21,12 +21,15 @@
 .\" **************************************************************************
 .TH curl_formadd 3 "24 June 2002" "libcurl 7.9.8" "libcurl Manual"
 .SH NAME
-curl_formadd - add a section to a multipart/formdata HTTP POST
+curl_formadd, curl_formadd_va - add a section to a multipart/formdata HTTP POST
 .SH SYNOPSIS
 .B #include <curl/curl.h>
 .sp
 .BI "CURLFORMcode curl_formadd(struct curl_httppost ** " firstitem,
 .BI "struct curl_httppost ** " lastitem, " ...);"
+
+.BI "CURLFORMcode curl_formadd_va(struct curl_httppost ** " firstitem,
+.BI "struct curl_httppost ** " lastitem, " va_list arg);"
 .ad
 .SH DESCRIPTION
 curl_formadd() is used to append sections when building a multipart/formdata
diff --git a/include/curl/curl.h b/include/curl/curl.h
index 467bb0240..36ecf53cd 100644
--- a/include/curl/curl.h
+++ b/include/curl/curl.h
@@ -2003,7 +2003,7 @@ typedef enum {
 } CURLFORMcode;
 
 /*
- * NAME curl_formadd()
+ * NAME curl_formadd()/curl_formadd_va()
  *
  * DESCRIPTION
  *
@@ -2015,6 +2015,10 @@ CURL_EXTERN CURLFORMcode curl_formadd(struct curl_httppost **httppost,
                                       struct curl_httppost **last_post,
                                       ...);
 
+CURL_EXTERN CURLFORMcode curl_formadd_va(struct curl_httppost **httppost,
+                                         struct curl_httppost **last_post,
+                                         va_list arg);
+
 /*
  * callback function for curl_formget()
  * The void *arg pointer will be the one passed as second argument to
diff --git a/lib/formdata.c b/lib/formdata.c
index c12227623..61eca92c1 100644
--- a/lib/formdata.c
+++ b/lib/formdata.c
@@ -733,11 +733,19 @@ CURLFORMcode FormAdd(struct curl_httppost **httppost,
 }
 
 /*
- * curl_formadd() is a public API to add a section to the multipart formpost.
+ * curl_formadd()/curl_formadd_va() are public APIs to add a section to
+ * the multipart formpost.
  *
  * @unittest: 1308
  */
 
+CURLFORMcode curl_formadd_va(struct curl_httppost **httppost,
+                             struct curl_httppost **last_post,
+                             va_list arg)
+{
+  return FormAdd(httppost, last_post, arg);
+}
+
 CURLFORMcode curl_formadd(struct curl_httppost **httppost,
                           struct curl_httppost **last_post,
                           ...)
@@ -745,7 +753,7 @@ CURLFORMcode curl_formadd(struct curl_httppost **httppost,
   va_list arg;
   CURLFORMcode result;
   va_start(arg, last_post);
-  result = FormAdd(httppost, last_post, arg);
+  result = curl_formadd_va(httppost, last_post, arg);
   va_end(arg);
   return result;
 }
-- 
2.11.0
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