I agree, whenever you see 'a' historic in print, or hear someone say it, it gives the impression the person is poorly educated. While 'a' has become more common than 'an' over time, it's still something most well educated or well read people people don't use unless it's an artifact of their regional dialect. I live in a college town and rarely hear that form.
Isn't it annoying and ignorant. My poor Mum used to have to pause to think should I say a or an.
I think so, but is an either/or, especially when dealing with a computer program ;)
"This is an historic city" should be accepted---the aitch in historic is not or ever so lightly aspirated
Demonstrative pronouns used to always get an accent, but now the accent is often dropped unless required to prevent ambiguity.
Easy to confuse "ciudad" (city) and "cuidado" (care) by merely transposing the "u". I always remember that in "ciudad" the "i" comes before the "u" and "city" is spelt with an "i".