[css-pseudo] Rename ::postfix to ::suffix #11949

https://drafts.csswg.org/css-pseudo-4/#first-letter-pseudo

To allow independent styling of the first letter itself and its adjacent punctuation, associated preceding punctuation is represented by the ::prefix sub-pseudo-element of the ::first-letter pseudo-element (::first-letter::prefix); and associated following punctuation is represented by the ::postfix sub-pseudo-element of the ::first-letter pseudo-element (::first-letter::postfix).

The naming was resolved in #2040 (comment)

fantasai: Florian suggested ::prefix and ::postfix, which has advantage of being usable on ::marker as well
fantasai: So wanted to confirm with WG
dbaron: How understandable would these terms to non-English speakers / other English speakers
astearns: ...
dbaron: prefix is much more common than postfix
plinss: Alternative would be suffix, but postfix has better symmetry
astearns: Anyone lining up to implement this?
astearns: Lacking that, I say we go with what's in the draft
RESOLVED: Accept what's in the draft
tantek: +1 to suffix. better known term than postfix. usability trumps symmetry

However, as @valtlai mentions in #2040 (comment), using ::postfix is inconsistent with @counter-style, which uses prefix and suffix descriptors: https://drafts.csswg.org/css-counter-styles-3/#counter-style-suffix

And as @tantek mentioned in the minutes, "suffix" is a much more frequently used word. See Google Books Ngram Viewer:

Also in Spanish ("postfijo" and "posfijo" are 3-4 orders of magnitude smaller than "sufijo"):

So I propose to amend that resolution. AFAIK nobody has implemented these pseudo-elements.