Is it possible to configure Meld to open diff/merge files with encoding CP-1252 in Ubuntu 16.04?
You should configure it by setting the gsettings key 'detect-encodings' for the wanted encodings.
gsettings set org.gnome.meld detect-encodings "['UTF-8', 'WINDOWS-1252', 'ISO-8859-15', 'UTF-16']"