ignore (trailing and leading) special characters in search

When one searches for instance for:

decadent,

...the app returns no results. decadent works as expected, giving a definition.

The user may accidentally select a period, comma or semicolon when sharing to the app -- Termux for instance highlights as follows:

The user has to carefully select just the word itself.

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Off the top of my head, there's no benefit in "exact matching" for trailing & leading punctuation and symbols. Please ignore them in the search.