I designed a WordPress theme from scratch starting from my html site and in the conversion I used the functions
__() to make the theme multilingual ready.
Then I created the translation .po and .mo files via Poedit (containing translations of the texts concerned) and enabled translation support via
functions.php. So in theory I should have all the elements at my disposal.
So my question is simple: is there a way to recall translations without using additional plugins (which I would like to avoid)? For example, can another language appear according to user's language browser, or simply with a manual switcher?