Strip leading/trailing space from TextElements

Author: alerque

fluent/resource.lua

@@ -119,17 +119,20 @@ node_types.Pattern = class({
         return tablex.reduce(math.min, indents) or 0
       end
       local striplen = tablex.reduce(math.min, tablex.imap(mindent, self.elements)) or 0
-      local i, strippref = 0, "\n"
-      while i < striplen do
+      local i, strippref = 1, "\n\n"
+      while i <= striplen do
         strippref = strippref .. " "
         i = i + 1
       end
       local strip = function(node, key, len)
         if type(node.value) == "string" then
           local value = string.gsub(node.value, "\r\n", "\n")
           if len >= 1 then
-            self.elements[key].value = string.gsub(value, strippref, "\n")
+            value = string.gsub(value, strippref, "\n")
           end
+          value = string.gsub(value, "^[\n ]+", "")
+          value = string.gsub(value, "[\n ]+$", "")
+          self.elements[key].value = value
         end
       end
       tablex.foreachi(self.elements, strip, striplen)