Mark invisible characters in form values

[zepich]

The signature issue is one of the most obvious problems while verifying a submission with the mosparo Verification API. This means that the signature the client generates differs from the API-generated one. Normally, this happens when the data in the two places are not the same, for example, when trailing white spaces are removed from a string.

To help with such problems, we've added the API debug mode, which makes the reason for such situations more visible. However, debugging such issues can still be challenging.

To make it even easier to understand such problems, we'll highlight characters like spaces and tabs at the beginning and end of the value. We should also highlight special characters, which could be problematic with a charset encoding.

Required features

• Highlight invisible and special characters in the form values

Suggested by

• @thelfensdrfer

Origin

• Verification failed #311

[zepich]

Hi @thelfensdrfer

As you may have seen, we released version 1.4.0 today, which includes the functionality to highlight the special characters and the spaces at the beginning and the end of a value.

Thank you very much for your help!

Kind regards,
zepich