Add support for completion requests from empty character

[fbricon]

Given:

<foo>
    <bar>
     // press ctrl-space here
</foo>

There's no completion until I press <. While I understand autocompletion is triggered on <, explicit completion requests (ctrl+space), should also return results from anywhere in the document. In this case, it should return </bar>.

In Eclipse, when explicitely requesting completion from an empty space, you get :
1 - proposition to close the last opened tag
2 - list of all possible tags (i.e existing siblings)

1/ is really important. 2/ we can probably live without for a bit.

[angelozerr]

This issue is for several features. Now completion with ctrl+space provides elements:

1. is working only when you are after the start of element

2. starts working

[fbricon]

So here's a strange behaviour. Given:

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
		 http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
         <context-param>
                //ctrl+space here
         </context-param>
</web-app>

Inside <context-param>, ctrl+space gives me 3 results: description, param-name, param-value. After <description></description> is inserted, next ctrl+space after </description> gives me 0 results from the server. I should have at least param-name and param-value

[angelozerr]

So here's a strange behaviour.

I will fix it.

[angelozerr]

@fbricon your problem should be fixed now. The last thing I must support is the close tag.

[angelozerr]

@fbricon I have improved a lot the close tag (works with empty character, indent apply of completion, provide several close tag to close. See the following demo:

Please closet this issue of it's OK for you.

[fbricon]

Very nice @angelozerr! Me likey

[angelozerr]

Glad it pleases you @fbricon !