Subject: treesit-install-language-grammar can provide the default repository URL
From: Dmitry Gutov <[email-masked]>
To: [email-masked]
Date: Wed, 25 Jan 2023 05:23:37 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

The format https://github.com/tree-sitter/tree-sitter-%s will work for a 
lot of languages, and the user won't even have to search for the address.

The patch can look like this:

diff --git a/lisp/treesit.el b/lisp/treesit.el
index 660039cc7cc..c1b98d085e8 100644
--- a/lisp/treesit.el
+++ b/lisp/treesit.el
@@ -2708,7 +2708,8 @@ treesit--install-language-grammar-build-recipe
        (list
         lang
         (read-string
-        "Enter the URL of the Git repository of the language grammar: ")
+        "Enter the URL of the Git repository of the language grammar: "
+        (format "https://github.com/tree-sitter/tree-sitter-%s" lang))
         (empty-string-to-nil
          (read-string
           "Enter the tag or branch (default: default branch): "))