templater: abstract truth testing to fix {if(list_of_empty_strings)}

Authored by yuja.

Description

templater: abstract truth testing to fix {if(list_of_empty_strings)}

Non-empty list should always be True even if it's stringified to ''. Spotted
by Martin von Zweigbergk.

Details

Committed
yujaJun 9 2018, 12:34 AM
Parents
rHGa9de1d28681c: show: stringify filtered list of tags before testing emptiness
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