Deleting next character after expansion of snippet

[TryerGit]

Hello,

I would like to use backtick character ` as triggers for some snippets in LaTeX

For e.g., I would like to have the following snippet

context math(context)
snippet `a "alpha" iA
\alpha 
endsnippet

(The reason for this requirement is that VimTeX by default comes with the backtick key as trigger expansion for commonly used greek symbols in LaTeX and I would like to use the same keybindings as far as possible across different platforms. Moreover, Latex Workshop currently provides trigger expansion of greek symbol snippets using @ which is an additional key press as compared to the backtick `)

At present, in LaTeX Workshop, the backtick key gets autocompleted due to the following setting:

    "autoClosingPairs": [
         ["`", "'"]
    ]

in latex-language-configuration.json. See here

As a result, when I press backtick, I end up with `|' where | is the cursor position.

Pressing a after this expands to:

\alpha '

After trigger expansion, is it possible to automatically delete the trailing ' so that one is left with \alpha ?

Thank you.