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-rw-r--r--docs/libcurl/curl_easy_setopt.34
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/libcurl/curl_easy_setopt.3 b/docs/libcurl/curl_easy_setopt.3
index e486a0032..095c1d7b5 100644
--- a/docs/libcurl/curl_easy_setopt.3
+++ b/docs/libcurl/curl_easy_setopt.3
@@ -964,5 +964,9 @@ standard for details.
CURLE_OK (zero) means that the option was set properly, non-zero means an
error occurred as \fI<curl/curl.h>\fP defines. See the \fIlibcurl-errors(3)\fP
man page for the full list with descriptions.
+
+If you try to set an option that libcurl doesn't know about, perhaps because
+the library is too old to support it or the option was removed in a recent
+version, this function will return \fICURLE_FAILED_INIT\fP.
.SH "SEE ALSO"
.BR curl_easy_init "(3), " curl_easy_cleanup "(3), "