Fix warning message in 'markdown-ts-mode--initialize'

* lisp/textmodes/markdown-ts-mode.el
(markdown-ts-mode--initialize): Tweak the warning message when
Tree-sitter is not available.  (Bug#81100)

1 files changed, 5 insertions, 2 deletions

diff --git a/lisp/textmodes/markdown-ts-mode.el b/lisp/textmodes/markdown-ts-mode.el
index 7f87ff5d0bc..be2247b870e 100644
--- a/lisp/textmodes/markdown-ts-mode.el
+++ b/lisp/textmodes/markdown-ts-mode.el
@@ -5402,9 +5402,12 @@ With a prefix argument, ARG, if needed, install parsers for `html',
            (markdown-ts--set-up))
           (t
            (warn "markdown-ts-mode cannot be set up; using fundamental-mode.
-The tree-sitter parsers `markdown' and `markdown-inline' were not found.
+%s."
+                 (if (treesit-available-p)
+                     "The tree-sitter parsers `markdown' and `markdown-inline' were not found.
 Use the command `markdown-ts-mode-install-parsers' to install them.
-With a prefix argument, it can also install optional parsers.")
+With a prefix argument, it can also install optional parsers"
+                   "Emacs was built without Tree-sitter support, or could not load Tree-sitter"))
            (fundamental-mode)))))
 
 ;;;###autoload