Formatting support for \[LeftDoubleBracket] and \[RightDoubleBracket]

Question

It has become common practice on Mathematica.SE to us the Unicode characters for a number of Mathematica symbols. This works because these are correctly interpreted when copied and pasted into a Notebook.

Mathematica provides double-bracket characters for Part application. These can greatly improve legibility of code with lots of square brackets, but attempting to use them in posts reveals a problem.

This code: list[[Ordering[set[[All, 1]], 15]]]

With \[LeftDoubleBracket] and \[RightDoubleBracket] should look like:

But instead it looks like this, with an extra space to the outside of these brackets, and the brackets are not vertically aligned:

list〚Ordering[set〚All, 1〛, 15]〛

There is however another pair of Unicode characters that have the correct appearance but unfortunately Mathematica does not interpret these correctly, so copy and paste of this line will fail:

list⟦Ordering[set⟦All, 1⟧, 15]⟧

I am requesting a formatting change, if it is possible, such that the upper line of code is rendered in appearance as the lower line.

Conceivably this could be done by either:

• Changing the display kerning of the Unicode U+301A and U+301B characters to behave as single-width characters without the space, and correct alignment, possibly using the syntax highlighter script.

• Replacing these characters with U+27E6 and U+27E7 for display, but somehow using U+301A and U+301B when the code is copied.

If either of these is possible I am requesting that it be done.