Extension causes selection operators to stop working

[forivall]

I regularly use "Add selection to find next match" (cmd+d) and sometimes "Expand selection (ctrl+'), and when i have this extension enabled, they break:

By default, without selecting anything, "Add sel..." will select the current word, but when this extension is enabled, in yaml files, it does nothing.

Without this extension, expand selection will select the word, then the key/value pair, then the whole line, then the entire file. With this extension, it just selects the entire file.

With a bit of experimentation, and comparing the built-in language config & syntax with the ones this extension provides, the only difference was the "wordPattern" in the language-configuration.json. Removing it solved my problem. I also made a quick tweak to remove the surrounding /s from the pattern, and that solved it too. PR incoming.