My data is xml'ish (here is an excerpt) :-

<bag name="mybag1" version="1.0"/>
<contents id="coins"/>
<bag name="mybag2" version="1.1"/>
<contents id="clothes"/>
<contents id="shoes"/>
<bag name="mybag3" version="1.6"/>

I want to delete line containing mybag2 and its subsequent contents (number of contents lines can vary). Thus I wish to delete from pattern mybag2 up to (but not including) the next "bag name" tag and result in :-

<bag name="mybag1" version="1.0"/>
<contents id="coins"/>
<bag name="mybag3" version="1.6"/>

I have tried this a few different ways with sed and awk and have yet to find a solution. Any help would be appreciated.