Need to convert %5B and %5D to literal [ and ] after rewrite operation

Hi,

When we rewrite a field output in view, we are supposed to give %5B and %5D to get [ and ] respectively in rewritten output. But it remains as %5B and %5D, which leads to following issue.

If we want to generate a link that contains [ and ], using a rewritten field. We need to use %5B and %5D instead of literal [ and ]. But generated link will be processed by drupal_http_build_query(), then %5B and %5D will get converted to %255B and %255D as % get escaped.

It is essential to have [ and ] in some cases, for example when using prepopulate module to prefill the node field values in creation form using values from existing nodes.

Example:

We want to generate the link of pattern /node/add/page?title=Somevalue&edit[field_something][und]=somevalue

Assuming we have added field_something and title field in view. Then first we can rewrite the output of field_something with this: &edit%5Bfield_something%5D%5Bund%5D=[field_something-value]

Then we can add a 'Global: Text' to generate the link, with link path: node/add/page?title=[title][field_something]

Output of 'Global: Text' will generate link similar to node/add/page?title=somevalue&edit%5Bfield_somefield%5D%5Bund%5D=somevalue , but it get processed by drupal_http_build_query() creating link 'node/add/page?title=somevalue&edit%255Bfield_somefield%255D%5Bund%255D=somevalue after escaping % characters. Which will not work with prepopulate module as we intended.

See last three comments (#4, #5 and #6) of https://www.drupal.org/node/578772 , they are facing similar issue.

To avoid this issue we need to convert %5B and %5D to literal [ and ] once token replacement has been performed on the field output.

I will post a patch proposing a fix to this issue.