Should {} and other wrappers that permit them *always* or *never* be internally space padded?

[TallTed]

(Originally raised at https://github.com/w3c/rdf-semantics/pull/64/files#r1911053260)

A decision to be made: whether {} wrappers that permit it should always or never be internally space padded; that is whether { should always or never be followed, and } should always or never be preceded, by a space . I am strongly in favor of always including such space characters, as I have never found them to decrease comprehension, and very often to increase it.

I find that sometimes including such padding, as here on the closing string } but not on the opening {I(E), significantly decreases comprehension, especially by readers who are not yet familiar with the overall subject matter.

(A similar question applies to <>, (), [], and any other similar wrapping punctuation.)

See https://github.com/w3c/rdf-semantics/blob/88152260cb19714c5c5ca206e709e8e46496928e/spec/index.html#L1181

        <p>ICEXT(I(<code>rdf:dirLangString</code>)) is the set { I(E) : E a directional language-tagged string }</p>