Returns the name of the entry that would be linked to by {{l}}, {{m}} or a similar template, given the same parameters.
For example, {{entryname|la|avārissimī}} gives "avarissimi", because {{l|la|avārissimī}} in fact links to the entry titled avarissimi due to Latin diacritic-stripping rules.
You can optionally supply a |sc= parameter for the script code if needed.