OverStrike control character

[Richard Wordingham]

On Fri, 19 Jun 2020 11:40:01 +0000
James Kass via Unicode <unicode at unicode.org> wrote:

> A font could be designed to make appropriate glyph substitutions for 
> strings which include the control picture for backspace, U+2408
> (“␈”). So a font could substitute an over struck l-m glyph for the
> string “l” + “␈” + “m”.  If the font didn’t support that string, the
> default display would still show authorial intent.  In this way users
> desiring to exchange data in plain-text which included over-strikes
> could do so without any additions to TUS.

Wouldn't this violate the character identity of U+2408?

The proper mechanism would be to use a PUA character.  The question is
whether the font would be enough, or whether one would have to change
its invoker.

Richard.