Inserting Sublime Text snippets without a leading space

Question

I have a code snippet whose code often gets tacked onto the end of some text. Here is the snippet:

<snippet>
    <content><![CDATA[
\textsubscript{$1}
]]></content>
    <tabTrigger>ts</tabTrigger>
</snippet>

The typical use case for this is when I'm writing a document in LaTeX and need to subscript something in text mode; e.g., NP\textsubcript{count}. In every case the snippet will be appended to the previous word.

The problem I'm having is that Sublime only triggers the completion when the tab trigger (ts) appears on its own -- not when it is appended to a word. Usually this is exactly the behavior I want, but in this case I need there to be no space between, e.g., NP and \textsubscript{count}. Is there some way to achieve this?