>
> The regexp in 'numerals' will match only a single character, so just
> one character after number-sign will be composed.  if you want to
> compose several ones, you need to say this instead:
>
>       (numerals "[\x966-\x96F]+"))


It is working fine now, Thank You!

 Do they have any glyphs in the font?  Did you try to use
> font-get-glyphs to see if the font can display those characters when
> they are alone?
>

I am an extreme novice, so please bear with me, but I cannot get the
function to work. I tried to enter the following as the argument FONT
OBJECT but none worked:
#<font-object "-GOOG-Noto Sans
Kaithi-regular-normal-normal-*-23-*-*-*-*-0-iso10646-1">
"-GOOG-Noto Sans Kaithi-regular-normal-normal-*-23-*-*-*-*-0-iso10646-1"
"#<font-object -GOOG-Noto Sans
Kaithi-regular-normal-normal-*-23-*-*-*-*-0-iso10646-1>"
"Noto Sans Kaithi"
"/usr/share/fonts/noto/NotoSansKaithi-Regular.ttf"

Though they do appear alone in Firefox and LibreOffice Writer.

That's what your composition rules already do: they are only triggered
> when the character preceding the numerals is a number sign.  So I
> don't think I understand the problem.
>

I want the font of devanagari and kaithi to be different, but since kaithi
uses devanagari numerals and a devanagari font other than Noto Sans Kaithi
does not render the number signs, I was asking that is it possible to only
change the devanagari font to Noto Sans Kaithi if it is around a number
sign.
Though this is a very specific problem of no significance, so it is fine if
you don't answer. I will not even use the number signs very much.

When you put the cursor at the number sign character, don't you see a
> thin 1-pixel space there?
>

Yes, when the character is not visible in Emacs and whenI put the cursor in
its place there is a thin 1-pixel space there.

On Fri, Apr 29, 2022 at 5:48 PM Eli Zaretskii <eliz@gnu.org> wrote:

> > From: समीर सिंह Sameer Singh <lumarzeli30@gmail.com>
> > Date: Fri, 29 Apr 2022 16:47:22 +0530
> > Cc: emacs-devel@gnu.org
> >
> > They seem to be working after changing the devanagari font to Noto Sans
> Kaithi but only for one digit
> > though
>
> But that's what the rule you wrote says:
>
>       (numerals "[\x966-\x96F]"))
>   [...]
>   (set-char-table-range composition-function-table
>                         '(#x110BD . #x110BD)
>                         (list (vector
>                                (concat number-sign numerals)
>                                0 'font-shape-gstring)))
>
> The regexp in 'numerals' will match only a single character, so just
> one character after number-sign will be composed.  if you want to
> compose several ones, you need to say this instead:
>
>       (numerals "[\x966-\x96F]+"))
>
> > also they do not appear when alone.
>
> Do they have any glyphs in the font?  Did you try to use
> font-get-glyphs to see if the font can display those characters when
> they are alone?
>
> > Since the kaithi unicode does not have its own numerals and uses the
> devanagari ones, is there any way to
> > only change the devanagari font when it is near the kaithi number signs?
>
> That's what your composition rules already do: they are only triggered
> when the character preceding the numerals is a number sign.  So I
> don't think I understand the problem.
>
> >
> > Here is the Text I entered, sorry for not including them earlier, I
> thought that mentioning their codepoints
> > should be enough.
> > KAITHI NUMBER SIGN: 𑂽
> > KAITHI NUMBER SIGN + DEVANAGARI 0: 𑂽१
> >
> > KAITHI NUMBER SIGN ABOVE: 𑃍
> > KAITHI NUMBER SIGN ABOVE + DEVANAGARI 0: 𑃍०
>
> When you put the cursor at the number sign character, don't you see a
> thin 1-pixel space there?
>