mention the outlength argument

diff --git a/docs/libcurl/curl_easy_unescape.3 b/docs/libcurl/curl_easy_unescape.3
index 6b0e6b5fa76c0562a9f31b4d2664c32ae409498c..8870daeab42a7b1b9771312732911df157032044 100644 (file)
--- a/docs/libcurl/curl_easy_unescape.3
+++ b/docs/libcurl/curl_easy_unescape.3
@@ -39,6 +39,10 @@ their binary versions.
 If the \fBlength\fP argument is set to 0 (zero), curl_easy_unescape() will use\r
 strlen() on the input \fIurl\fP string to find out the size.\r
 \r
+If \fBoutlength\fP is non-NULL, the function will write the length of the\r
+returned string in the integer it points to. This allows an escaped string\r
+containing %00 to still get used properly after unescaping.\r
+\r
 You must \fIcurl_free(3)\fP the returned string when you're done with it.\r
 .SH AVAILABILITY\r
 Added in 7.15.4 and replaces the old curl_unescape() function.\r