msg = replace_all(msg, "@foe_possessive@", "your");

                const std::string::size_type pos = foe_name.find("'");
                if (pos != std::string::npos)
                    foe_name = foe_name.substr(0, pos);

        msg = replace_all(msg, "@foe_possessive@", "@foe@'s");

VISUAL:@The_monster@ says something you can't hear.  It was probably not a compliment.

VISUAL:@The_monster@ says something you can't hear.  It was probably not a compliment. @player_only@

@The_monster@ intently looks at you, slowly moving @possessive@ tail.

@The_monster@ intently looks at @foe@, slowly moving @possessive@ tail.

@The_monster@ tries to tell you a complicated story about hydras, @possessive@ blood, and marriage.

@The_monster@ tries to tell @foe@ a complicated story about hydras, @possessive@ blood, and marriage.

VISUAL:@The_monster@ pantomimes your execution.

VISUAL:@The_monster@ pantomimes @foe_possessive@ execution.

monster's name

monster's name.  "@foe_possessive@" will be replaced with "your" if directed
at the player, or expanded like "@foe@'s" if directed at a monster.