Realized that by changing the query to not include the 'select' clause and simply getting the whole row back, I can check for whether the searched-for term was actually found.  (Previously, it would return an empty string, but this was ambiguous.) This now does this and reports an error if the term isn't found.
Realized that by changing the query to not include the 'select' clause and simply getting the whole row back, I can check for whether the searched-for term was actually found.  (Previously, it would return an empty string, but this was ambiguous.) This now does this and reports an error if the term isn't found.

mhucka/mediawiki-google-spreadsheet-extension