feat: search first character of each word

scripts/uosc/elements/Menu.lua

@@ -649,8 +649,11 @@ end
 function Menu:search_internal(menu)
 	local query = menu.search.query:lower()
 	menu.items = query ~= '' and itable_filter(menu.search.source.items, function(item)
-		return item.title and item.title:lower():find(query, 1, true) or
-			item.hint and item.hint:lower():find(query, 1, true)
+		local title = item.title and item.title:lower()
+		local hint = item.hint and item.hint:lower()
+		return title and title:find(query, 1, true) or hint and hint:find(query, 1, true) or
+			title and table.concat(first_word_chars(title)):find(query, 1, true) or
+			hint and table.concat(first_word_chars(hint)):find(query, 1, true)
 	end) or menu.search.source.items
 	self:search_update_items()
 end

scripts/uosc/lib/text.lua

@@ -460,3 +460,11 @@ function wrap_text(text, opts, target_line_length)
 	end
 	return table.concat(lines, '\n'), #lines
 end
+
+function first_word_chars(str)
+	local first_chars = {}
+	for w in str:gmatch('%w+') do
+		first_chars[#first_chars + 1] = w:sub(1, utf8_char_bytes(w, 1))
+	end
+	return first_chars
+end