bug#55807: [PATCH] Add a fallback font for Tamil Supplement characters.

["समीर सिंह Sameer Singh" <lumarzeli30@gmail.com>]

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This is the patch to add a font for Tamil supplement characters as
discussed earlier.

I couldn't fit the commit message in one line, so if I did anything wrong
please tell me.

Thank You.

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From cad05fe6dd8c136754e9264766dc0f2748fda921 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E0=A4=B8=E0=A4=AE=E0=A5=80=E0=A4=B0=20=E0=A4=B8=E0=A4=BF?=
 =?UTF-8?q?=E0=A4=82=E0=A4=B9=20Sameer=20Singh?= <lumarzeli30@gmail.com>
Date: Sun, 5 Jun 2022 17:09:40 +0530
Subject: [PATCH] ; * lisp/international/fontset.el (setup-default-fontset)

Add a fallback font for Tamil supplement.
---
 lisp/international/fontset.el | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lisp/international/fontset.el b/lisp/international/fontset.el
index 74be7edc64..d07619cd80 100644
--- a/lisp/international/fontset.el
+++ b/lisp/international/fontset.el
@@ -974,6 +974,12 @@ setup-default-fontset
   (set-fontset-font "fontset-default" 'emoji
                     '("Noto Color Emoji" . "iso10646-1") nil 'prepend)
 
+  ;; This allows the display of tamil supplement characters. As these characters
+  ;; are pretty simple and do not need reordering, ligatures, vowel signs, virama
+  ;; etc. tml2 or other OTF tags are not needed here.
+  (set-fontset-font "fontset-default" '(#x11FC0 . #x11FFF)
+                    '("Noto Sans Tamil Supplement" . "iso10646-1") nil 'append)
+
   ;; Append CJK fonts for characters other than han, kana, cjk-misc.
   ;; Append fonts for scripts whose name is also a charset name.
   (let* ((data (build-default-fontset-data))
-- 
2.36.1