Sample code:
-------------------
import std.stdio;
import std.json;
void main(string[] args){

  string text = "{ \"url\":\"http://www.boost.org\" }";
  JSONValue json = parseJSON(text);

  writeln(toJSON(&json));
  // prints: { "url":"http\/\/www.boost.org\" }
  // The same happens when writing to a file.
}
--------------------

The double slash "//" in the url is replaced by "\/\/".
Is that a feature or a bug? If the former, what is the
reason for this behavior and how to avoid it?

Peter

On Monday, 7 January 2013 at 23:16:51 UTC, Peter Sommerfeld wrote:
> The double slash "//" in the url is replaced by "\/\/".
> Is that a feature or a bug?

It is intentional. I searched the web for other json implementations that do the same thing and came up with this link for why:

http://stackoverflow.com/questions/1580647/json-why-are-forward-slashes-escaped

"Allowing \/ helps when embedding JSON in a <script> tag, which doesn't allow </ inside strings, like Seb points out."



There's no way to disable it in D's std.json, but you don't have to either - it is perfectly correct according to the standard.

Thanks Adam! D. Ruppe:

> On Monday, 7 January 2013 at 23:16:51 UTC, Peter Sommerfeld wrote:
>> The double slash "//" in the url is replaced by "\/\/".
>> Is that a feature or a bug?
>
> It is intentional. I searched the web for other json implementations that do the same thing and came up with this link for why:
>
> http://stackoverflow.com/questions/1580647/json-why-are-forward-slashes-escaped
>
> "Allowing \/ helps when embedding JSON in a <script> tag, which doesn't allow </ inside strings, like Seb points out."
>
> There's no way to disable it in D's std.json, but you don't have to either - it is perfectly correct according to the standard.

Thanks Adam! On the other hand: json is fine to be edited by humans and
in this case simple double slashes would be better. Thus a second bool
value to discriminate both variants where preferable. No serious problem
anyway ...


Peter