Hmm, njah, are u sure?

I think it would be enough to look into included files, but yes it probably needs integration with programming modes; but probably not more than to know 
what mode to load based on edited code. That info is available though for moste modes; for example in C/C++ included code is usually C/C++. Inline assembly can be deduced by directives in the code.

In case of webb languages, for example there are usually declarations and link-types in header, or is definition itself in the file btween <scrypt> or <style>

Since compliers are not that clever by themselves there is usually some kind of in the code itself that emacs might use?

From: lennart.borgman@gmail.com
Date: Wed, 19 Mar 2014 16:03:34 +0100
Subject: Re: "Adobe Brackets like" editing in emacs
To: darthandrus@gmail.com
CC: stephen@xemacs.org; rms@gnu.org; arthur.miller@live.com; emacs-devel@gnu.org

On Wed, Mar 19, 2014 at 3:01 PM, Ivan Andrus <darthandrus@gmail.com> wrote:


On Mar 18, 2014, at 10:18 PM, Stephen J. Turnbull <stephen@xemacs.org> wrote:





>> For example while editing html, if one clicks on an element, code

>> for css-style property for that element is displayed direclty below

>> under the lineof the code for that tag and one can edit that

>> particular piece of css.

>

> Which CSS property?  The "C" in CSS stands for "cascading".  That is,

> there may be a style attribute on the current element, there may be a

> style element in the document, and there may be multiple rel=style

> links in the document, any of which might be what you're editing.  Or

> you might actually be creating a style attribute on the element.



I haven’t used it, but I think it grabs _all_ relevant styles.  Gathering them from across several files, and putting them in a single editable place.



-Ivan


Is not that a very difficult part? It requires tight integration with the webbrowser (or a framework within Emacs for CSS+HTML).