cannot generate ID for CJK characters in headings

[mantou132]

code: # 标题一
render result: <h1 id="-">标题一</h1>

[ginuim]

I have the same problem，a lot of id="-"

[Jiang-Xuan]

    Renderer.prototype.heading = function(text, level, raw) {
	  return '<h'
	    + level
	    + ' id="'
	    + this.options.headerPrefix
	    + raw.toLowerCase().replace(/[^\w]+/g, '-')
	    + '">'
	    + text
	    + '</h'
	    + level
	    + '>\n';
	};

raw.toLowerCase().replace(/[^\w]+/g, '-').
this line cause problem.

[xzysun]

#919 (comment) this solution looks fine

[joshbruce]

Closing as we are starting to really look at removing header ids from marked and improve ways for extenders to do this themselves.