Counting Devanagari Aksharas

[Eli Zaretskii via Unicode]

> Date: Sun, 23 Apr 2017 00:51:59 +0100
> Cc: Julian Bradfield <jcb+unicode at inf.ed.ac.uk>
> From: Richard Wordingham via Unicode <unicode at unicode.org>
> 
> On Sat, 22 Apr 2017 21:39:42 +0100 (BST)
> Julian Bradfield via Unicode <unicode at unicode.org> wrote:
> 
> > On 2017-04-22, Eli Zaretskii via Unicode <unicode at unicode.org> wrote:
> 
> > > I could imagine Emacs decomposing characters temporarily when only
> > > part of a cluster matches the search string.  Assuming this would
> > > make sense to users of some complex scripts, that is.  You are
> > > welcome to suggest such a feature by using report-emacs-bug.  
> 
> The cursor moves to the cluster boundary, so there is much less of a
> problem with Emacs.

But you wanted to highlight only part of the cluster, AFAIU.

> > That's what I do in my emacs with combining characters, and if I had
> > complex script support, I'd expect the same to happen there.
> > emacs is a programmer's editor, after all :)
> 
> Emacs probably has a way of toggling complex script support somewhere.
> I'm torn between seeing the text properly set out and seeing exactly
> what it is that I've typed.  'Reveal codes' doesn't seem widely
> supported.

"M-x auto-composition-mode RET" should do what you want.