In the key file that you might want to check out, there are two more alternative commands:
editor.action.smartSelect.grow
and
editor.action.smartSelect.shrink
They select everything between the next border (quotation marks, brackets, braces ...), and the selection increases to the next border when you click the shortcut again.
The default shortcut is ctrl + shift + cmd + right / ctrl + shift + cmd + left, which is too hard on the fingers for my taste, so you can rebuild it (I use ctrl + up / ctrl + down).
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