Anchor sub elements and support for placeholders, fragments, and HTML4 name

[benjaminma]

Suggested anchor handling:

• <a href="mailto:address"> - keep address
• <a href="#fragment"> - process sub elements
• <a href="url"> - keep url, process sub elements
• <a name="id"> - process sub elements
• <a> - process sub elements

[mlegenhausen]

I agree with <a href="mailto:address">, <a name="id"> and <a>. <a href="#fragment"> depends on if you have links like "Jump to Foo" or not. The same applies to <a href="url">.

I think even for the mailto option other people want another behaviour. I think the best approuch would be to use your defaults and make them avaibale via options parameters. Something like this:

var text = htmlToText.fromString('<h1>Hello World</h1>', {
    format: {
        a: {
            mailTo: 'value' // 'append', 'prepend', 'inner' or supply a Function,
            url: 'append',
            fragment: 'inner',
            name: 'inner',
            none: 'inner'
         } // Replace this by a Function and handle all link types by your own
    }
});

These are the default options. I wrapped it in an format option so it is extensable (maybe for all tags in the future).

Following behaviour per value:

• value - use the value inside the attribute
• inner - process the child elements
• append or prepend - put the link in brackets [] before or after the sub element text representation
• Function - Add your own formatting behaviour.

What do you mean?

[otopsy]

it will fix the "href missing bug" too !

[mlegenhausen]

I currently don't have the time or the need to resolve this issue.
Push requests are welcome ;)