maint: update deps

deps/curl/docs/libcurl/opts/CURLOPT_APPEND.md

@@ -0,0 +1,61 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_APPEND
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_DIRLISTONLY (3)
+  - CURLOPT_RESUME_FROM (3)
+  - CURLOPT_UPLOAD (3)
+---
+
+# NAME
+
+CURLOPT_APPEND - append to the remote file
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_APPEND, long append);
+~~~
+
+# DESCRIPTION
+
+A long parameter set to 1 tells the library to append to the remote file
+instead of overwrite it. This is only useful when uploading to an FTP site.
+
+# DEFAULT
+
+0 (disabled)
+
+# PROTOCOLS
+
+FTP
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+
+    curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/dir/to/newfile");
+    curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
+    curl_easy_setopt(curl, CURLOPT_APPEND, 1L);
+
+    curl_easy_perform(curl);
+  }
+}
+~~~
+
+# AVAILABILITY
+
+This option was known as CURLOPT_FTPAPPEND up to 7.16.4
+
+# RETURN VALUE
+
+Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.