Mention first version with CURLOPT_COPYPOSTFIELDS.

Don't confuse NUL with NULL.

1 files changed, 3 insertions, 2 deletions

diff --git a/docs/libcurl/curl_easy_setopt.3 b/docs/libcurl/curl_easy_setopt.3
index b5a0b270e..8bdcf2172 100644
--- a/docs/libcurl/curl_easy_setopt.3
+++ b/docs/libcurl/curl_easy_setopt.3
@@ -727,18 +727,19 @@ data to figure out the size. This is the large file version of the
 \fICURLOPT_POSTFIELDSIZE\fP option. (Added in 7.11.1)
 .IP CURLOPT_COPYPOSTFIELDS
 Pass a char * as parameter, which should be the full data to post in an HTTP
-POST operation. It behaves has the \fICURLOPT_POSTFIELDS\fP option, but the
+POST operation. It behaves as the \fICURLOPT_POSTFIELDS\fP option, but the
 original data are copied by the library, allowing the application to overwrite
 the original data after setting this option.
 
 Because data are copied, care must be taken when using this option in
 conjunction with \fICURLOPT_POSTFIELDSIZE\fP or
 \fICURLOPT_POSTFIELDSIZE_LARGE\fP: If the size has not been set prior to
-\fICURLOPT_COPYPOSTFIELDS\fP, the data are assumed to be a null-terminated
+\fICURLOPT_COPYPOSTFIELDS\fP, the data are assumed to be a NUL-terminated
 string; else the stored size informs the library about the data byte count to
 copy. In any case, the size must not be changed after
 \fICURLOPT_COPYPOSTFIELDS\fP, unless another \fICURLOPT_POSTFIELDS\fP or
 \fICURLOPT_COPYPOSTFIELDS\fP option is issued.
+(Added in 7.17.1)
 
 .IP CURLOPT_HTTPPOST
 Tells libcurl you want a multipart/formdata HTTP POST to be made and you