PrefixHeaderId does not accept forward slashes

[baileyherbert]

An id attribute value may, according to HTML5 and in browser practice, contain any characters except space characters.

In showdown, passing a forward slash in as an ID prefix, like this:

{
  prefixHeaderId: "/layout/"
}

Yields a very unexpected result. Instead of generated IDs looking like id="/layout/simplified-header-text" it looks instead like id="layoutsimplified-header-text".

Is there an easy workaround to this?

[tivie]

According to the HTML spec:

ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").

[baileyherbert]

Is showdown still living in HTML4, then? That link is HTML4.

Here's the direct quote from W3 HTML5 specification:

The value must not contain any space characters.

and

There are no other restrictions on what form an ID can take; in particular, IDs can consist of just digits, start with a digit, start with an underscore, consist of just punctuation, etc.

[tivie]

Showdown supports both HTML4 and HTML5 spec (with some restrictions).

[tivie]

I don't know how we could make showdown compliant with HTML4 and HTML5, honestly

[tivie]

@baileyherbert You now have 2 options to fix this:

• use option rawHeaderId which removes only spaces, ' and " from titles.
• use option rawPrefixHeaderId which leaves the prefix alone (doesn't change any character from the prefix)

Keep in mind that both options might result in malformed IDs. For instance, when you use rawPrefixHeaderId and use a prefix with " or

[baileyherbert]

Yup, working perfect now. Thanks!