RE: Upcoming loss of usability of Emacs source files and Emacs.

[Drew Adams]

> I guess I'm asking what is really meant by "mirror pairs" in this
> context.

Well, if it's any help (since I guess I introduced "mirror pairs"
to the conversation), all I meant was a pair of chars that "we"
think could be appropriate to set off code etc. char sequences from
the surrounding text.

My intention in using that term was just to contrast the use of two
different chars from use of the same char twice: '...', `...`, etc.

Personally, I don't think it's necessarily important that the two
different chars be visually exact mirror images in any sense.

(Certain quotation-mark pairs are anyway not left-right mirror
images.)