Revert "add response.charset accessor and ctx.charset alias"

This reverts commit 94413b1.

docs/api/context.md

@@ -149,12 +149,10 @@ throw err;
  - `ctx.body=`
  - `ctx.status`
  - `ctx.status=`
- - `ctx.length`
  - `ctx.length=`
- - `ctx.type`
+ - `ctx.length`
  - `ctx.type=`
- - `ctx.charset`
- - `ctx.charset=`
+ - `ctx.type`
  - `ctx.headerSent`
  - `ctx.redirect()`
  - `ctx.attachment()`

docs/api/response.md

@@ -186,20 +186,6 @@ this.type = 'png';
  when explicitly defined in full as `res.type = 'text/html'`
  no charset is assigned.
 
-### res.charset
-
- Get response charset when present, or `undefined`:
-
-```js
-this.type = 'text/plain; charset=utf-8';
-this.charset
-// => "utf-8"
-```
-
-### res.charset=
-
- Set the response charset, overriding if present.
-
 ### res.redirect(url, [alt])
 
  Perform a [302] redirect to `url`.

lib/context.js

@@ -151,7 +151,6 @@ delegate(proto, 'response')
  .access('body')
  .access('length')
  .access('type')
- .access('charset')
  .getter('headerSent')
  .getter('writable')
  .setter('lastModified')

lib/response.js

@@ -17,31 +17,6 @@ var extname = path.extname;
 
 module.exports = {
 
- /**
- * Set the charset.
- *
- * @param {String} val
- * @api public
- */
-
- set charset(val) {
- this.set('Content-Type', this.type + '; charset=' + val);
- },
-
- /**
- * Get the charset when present or undefined.
- *
- * @return {String}
- * @api public
- */
-
- get charset() {
- // TODO: lame, we could have a generic param parsing lib
- var type = this.get('Content-Type');
- var m = type.match(/charset *= *(\S+)/);
- if (m) return m[1];
- },
-
  /**
  * Return the request socket.
  *