Formatter expand/collapse/ignore empty XML tags

[angelozerr]

Formatter expand/collapse/ignore empty XML tags

See #219

Signed-off-by: azerr azerr@redhat.com

[xorye]

I found a minor edge case when I set xml.format.emptyElements to collapse:

After range formatting, I think the result should be:

<a>
    <b>
</b>
</a>

as only the starting tag was to be formatted

[fbricon]

@angelozerr please see if this is fixable. maybe don't do the collapsing/expansion if the selection is not self-contained, i.e it's malformed on its own.

[angelozerr]

I close this PR for #242 (I had some trouble with Eclipse Egit NPE bug)

[angelozerr]

I found a minor edge case when I set xml.format.emptyElements to collapse:

Good catch!

@angelozerr please see if this is fixable. maybe don't do the collapsing/expansion if the selection is not self-contained, i.e it's malformed on its own.

I fixed this issue, if element is not closed (when range doesn't cover the whole element, the collapse/expand is ignored for this element