Tutorial with a real world sample
Here is a fairly complete tutorial, this is a use case that comes from the real world. At the end of the tutorial you will have a good understanding of rougail.
Configuring (the setting of) your favorite web browser
This tutorial will show you an example of Rougail use based on the how to set a proxy in the Mozilla Firefox browser use case.
More precisely, this tutorial aims at reproducing variables behind this Mozilla Firefox settings page:

We’ll call the variables configuration options since that’s what the variables represent in this case.
Attention
We are not coding a firefox plugin here. We are just going to handle some of the firefox configuration settings with Rougail.
Presentation of the firefox option configuration variables
Let’s dive into this configuration options validation use case. The values entered by the user have to be
validated
consitent
At first glance we can see that we have a selection of five configuration options values that we need to fill in (they are highlighted here in this screenshot):
