Is this english rule right?

[thevinci]

I see this in the english file

en.singular(/ies$/i, 'ie')

Should this be?

en.singular(/ies$/i, 'y')  

[tremby]

Sometimes yes, sometimes no.

Some from the no camp:

• oldie
• pie
• pinkie
• pixie
• prairie
• quickie
• rookie
• rotisserie
• sweetie
• veggie
• zombie

Some from the yes camp:

• ability
• abnormality
• academy
• city
• melody
• ovary
• reply
• try