url encode docs: mention '-', '.', '_' and '~'
Clarify that the '-', '.', '_' or '~' letters are also not escaped since
they shouldn't according to RFC3986 section 2.3.
This is how this function has behaved since sep 2010, commit
5df13c31735fa0.
diff --git a/docs/libcurl/curl_easy_escape.3 b/docs/libcurl/curl_easy_escape.3
index 2c09875..3a98e6f 100644
--- a/docs/libcurl/curl_easy_escape.3
+++ b/docs/libcurl/curl_easy_escape.3
@@ -5,7 +5,7 @@
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
@@ -31,8 +31,8 @@
.SH DESCRIPTION
This function converts the given input string to an URL encoded string and
returns that as a new allocated string. All input characters that are not a-z,
-A-Z or 0-9 are converted to their "URL escaped" version (%NN where NN is a
-two-digit hexadecimal number).
+A-Z, 0-9, '-', '.', '_' or '~' are converted to their "URL escaped" version
+(%NN where NN is a two-digit hexadecimal number).
If the \fBlength\fP argument is set to 0 (zero), \fIcurl_easy_escape(3)\fP
uses strlen() on the input \fBurl\fP to find out the size.
