Remove *all* text after a newline in title

API.md

@@ -42,7 +42,7 @@ easy and quick manipulation of the item help entries. All fields are optional.
 * `_doc_items_hidden`: Whether entry is hidden (default: `false` for air and hand, `true` for everything else)
 * `_doc_items_create_entry`: Whether to create an entry for this item (default: `true`)
 * `_doc_items_entry_name`: The title of the entry. By default, this is the same as the `description` field
-  of the item. This field is required if the `description` is empty
+  of the item (discarding text after the first newline). This field is required if the `description` is empty
 * `_doc_items_durability`: This field is for describing how long a tool can be used before it breaks. Choose one data type:
    * It it is a `number`: Fixed number of uses before it breaks
    * If it is a `string`: Free-form text which explains how the durability works. Try to keep it short and only use it if the other types won't work

init.lua

@@ -65,10 +65,14 @@ local groups_to_string = function(grouptable, filter)
 	end
 end
 
--- Replaces all newlines with spaces
+-- Removes all text after the first newline (including the newline)
 local scrub_newlines = function(text)
-	local new, x = string.gsub(text, "\n", " ")
-	return new
+	local spl = string.split(text, "\n")
+	if spl and #spl > 0 then
+		return spl[1]
+	else
+		return text
+	end
 end
 
 --[[ Append a newline to text, unless it already ends with a newline. ]]