@@ -102,7 +102,7 @@ def _legacy_varFindLimitSpace(basedir, vars, space, part, lookup_fatal, depth, e

     if space is None:

         return space

     # A part with escaped .s in it is compounded by { and }, remove them

-    if part[0] == '{' and part[-1] == '}':

+    if len(part) > 0 and part[0] == '{' and part[-1] == '}':

         part = part[1:-1]

     # Template part to resolve variables within (${var$var2})

     part = legacy_varReplace(basedir, part, vars, lookup_fatal=lookup_fatal, depth=depth + 1, expand_lists=expand_lists)