bug#27544: 25.1; Visualization of Unicode bidirectional marks

[Lars Ingebrigtsen]

Itai Berli <itai.berli@gmail.com> writes:

> Emacs supports 12 Unicode bidirectional marks (ALM, RLM, LRM, LRE,
> RLE, LRO, RLO, PDF, FSI, LRI, RLI, and PDI), each of which displays as
> a very thin space. This raises two problems.

Perhaps there should be a minor mode to display these characters more
clearly, because they can be pretty confusing to deal with.

What would be the best way to implement such a mode?  Change
`glyphless-char-display' buffer-locally?

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   bloggy blog: http://lars.ingebrigtsen.no