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    <font size="-1"><font face="Lucida Console">I've provided a patch
        and some <font face="Lucida Console">context <font
            face="Lucida Console">in this ticket.<br>
          </font></font><br>
        <a class="moz-txt-link-freetext"
          href="http://trac.osgeo.org/gdal/ticket/5526">http://trac.osgeo.org/gdal/ticket/5526</a><br>
        <br>
        <font face="Lucida Console">Thank you for your feedback<font
            face="Lucida Console">!</font><br>
          <br>
          <br>
          <font face="Lucida Console">Tim<br>
            <br>
            <br>
          </font></font></font></font>
    <div class="moz-cite-prefix">On 18/06/2014 2:02 PM, Timothy Astle
      wrote:<br>
    </div>
    <blockquote cite="mid:53A1C60C.1090408@caris.com" type="cite">
      <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
      <font size="-1"><font face="Lucida Console"><font face="Lucida
            Console">Yes, that could be possible.<br>
            <br>
            A<font face="Lucida Console"> web server </font>should tr<font
              face="Lucida Console">y to </font>URL decode anything
            that <font face="Lucida Console">has been <font
                face="Lucida Console">en<font face="Lucida Console">coded<font
                    face="Lucida Console">, that is, any </font>%<font
                    face="Lucida Console">xx <font face="Lucida
                      Console">token</font></font>.<br>
                  <br>
                  <font face="Lucida Console">But I have hit one server
                    that doesn't do this<font face="Lucida Console">,
                      and that's why I'm <font face="Lucida Console">here. 
                        <font face="Lucida Console">It doesn't seem to
                          be <font face="Lucida Console">doing any
                            decod<font face="Lucida Console">ing.</font></font></font>
                        :(<br>
                        <br>
                        <br>
                        <font face="Lucida Console">Ti<font face="Lucida
                            Console">m</font></font><br>
                      </font></font></font></font></font></font></font></font></font><br>
      <br>
      <div class="moz-cite-prefix">On 18/06/2014 10:18 AM, Even Rouault
        wrote:<br>
      </div>
      <blockquote
        cite="mid:201406181518.55614.even.rouault@mines-paris.org"
        type="cite">
        <pre wrap="">Le mercredi 18 juin 2014 14:47:47, Timothy Astle a écrit :
</pre>
        <blockquote type="cite">
          <pre wrap="">I was thinking something like the following:

              if( (pszInput[iIn] >= 'a' && pszInput[iIn] <= 'z')

                  || (pszInput[iIn] >= 'A' && pszInput[iIn] <= 'Z')
                  || (pszInput[iIn] >= '0' && pszInput[iIn] <= '9')

-                || pszInput[iIn] == '_' || pszInput[iIn] == '.' )
+                || pszInput[iIn] == '$' && pszInput[iIn] == '-'
+                || pszInput[iIn] == '_' || pszInput[iIn] == '.'
+                || pszInput[iIn] == '+' && pszInput[iIn] == '!'
+                || pszInput[iIn] == '*' && pszInput[iIn] == '\''
+                || pszInput[iIn] == '(' && pszInput[iIn] == ')'
+                || pszInput[iIn] == '"' && pszInput[iIn] == ',' )

which follows the list of special characters that may be used unencoded
within a URL.

    Thus, only alphanumerics, the special characters "$-_.+!*'(),", and
    reserved characters used for their reserved purposes may be used
    unencoded within a URL.

That list is mutually exclusive from the list you cited as being a
concern, which I agree with.
</pre>
        </blockquote>
        <pre wrap="">Looks reasonable, although I anticipate we might hit server bugs if changing 
that...

</pre>
        <blockquote type="cite">
          <pre wrap="">
Tim

On 17/06/2014 6:24 PM, Even Rouault wrote:
</pre>
          <blockquote type="cite">
            <pre wrap="">Le lundi 16 juin 2014 14:20:59, Timothy Astle a écrit :
</pre>
            <blockquote type="cite">
              <pre wrap="">Hi all,

Does anyone know why CPLEscapeString
(<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://svn.osgeo.org/gdal/trunk/gdal/port/cpl_string.cpp">https://svn.osgeo.org/gdal/trunk/gdal/port/cpl_string.cpp</a>) character
encodes characters that are valid as-is according to
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.ietf.org/rfc/rfc1738.txt">http://www.ietf.org/rfc/rfc1738.txt</a>?

I just hit a situation where I noticed the WMS driver is converting
hyphens to %2D for layer names.  The 3rd party server doesn't handle it
(but it should) and this caught my attention.

Any thoughts?  Is it just a case where a patch would be welcome?
</pre>
            </blockquote>
            <pre wrap="">Tim,

What would your patch do ? Implement the following from RFC1738 ? :

"Thus, only alphanumerics, the special characters "$-_.+!*'(),", and
reserved characters used for their reserved purposes may be used
unencoded within a URL."

Well, actually I think it should still encode the reserved characters
(";",

  "/", "?", ":", "@", "=" and "&"), since valid use cases of
  CPLEscapeString(,

CPLES_URL) might be do make sure that they are encoded.

Even
</pre>
          </blockquote>
        </blockquote>
      </blockquote>
      <br>
      <div class="moz-signature">-- <br>
        <div style="width:600px;"> Tim Astle<br>
          Development Manager<br>
          Web Technologies<br>
          <br>
          <a moz-do-not-send="true" href="http://www.caris.com"
            style="color:#004680;"><strong>CARIS</strong></a><br>
          115 Waggoners Lane<br>
          Fredericton, New Brunswick<br>
          Canada    E3B 2L4<br>
          Tel: +1.506.458.8533     Fax: +1.506.459.3849<br>
          <a moz-do-not-send="true" href="http://www.caris.com"
            style="color:#004680;">www.caris.com</a>
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    </blockquote>
    <br>
    <div class="moz-signature">-- <br>
      <div style="width:600px;"> Tim Astle<br>
        Development Manager<br>
        Web Technologies<br>
        <br>
        <a href="http://www.caris.com" style="color:#004680;"><strong>CARIS</strong></a><br>
        115 Waggoners Lane<br>
        Fredericton, New Brunswick<br>
        Canada    E3B 2L4<br>
        Tel: +1.506.458.8533     Fax: +1.506.459.3849<br>
        <a href="http://www.caris.com" style="color:#004680;">www.caris.com</a>
        <p style="margin-top:20px;"> <strong style="color:#373737;">Connect
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