From dad2a41a2ab792ab6fdc3ff972117102c3c3e5ca Mon Sep 17 00:00:00 2001
From: Lars Ingebrigtsen <larsi@gnus.org>
Date: Mon, 25 Apr 2022 10:05:44 +0200
Subject: [PATCH] Make flymake-show-buffer-diagnostics error out in non-Flymake
 buffers

* lisp/progmodes/flymake.el (flymake-show-buffer-diagnostics):
Signal an error if run outside of a buffer with Flymake enabled
(bug#55097).
---
 lisp/progmodes/flymake.el | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lisp/progmodes/flymake.el b/lisp/progmodes/flymake.el
index 83d7bc8641c..8cbebe78fe1 100644
--- a/lisp/progmodes/flymake.el
+++ b/lisp/progmodes/flymake.el
@@ -1637,6 +1637,8 @@ buffer."
 (defun flymake-show-buffer-diagnostics ()
   "Show a list of Flymake diagnostics for current buffer."
   (interactive)
+  (unless flymake-mode
+    (user-error "Flymake mode is not enabled in the current buffer"))
   (let* ((name (flymake--diagnostics-buffer-name))
          (source (current-buffer))
          (target (or (get-buffer name)
-- 
2.39.2