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-rw-r--r--lisp/simple.el10
1 files changed, 8 insertions, 2 deletions
diff --git a/lisp/simple.el b/lisp/simple.el
index a50294e54fd..1a596cf11db 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -28,6 +28,8 @@
;;; Code:
+(eval-when-compile (require 'cl-lib))
+
(declare-function widget-convert "wid-edit" (type &rest args))
(declare-function shell-mode "shell" ())
@@ -410,6 +412,7 @@ A non-nil INTERACTIVE argument means to run the `post-self-insert-hook'."
;; Do the rest in post-self-insert-hook, because we want to do it
;; *before* other functions on that hook.
(lambda ()
+ (cl-assert (eq ?\n (char-before)))
;; Mark the newline(s) `hard'.
(if use-hard-newlines
(set-hard-newline-properties
@@ -428,7 +431,8 @@ A non-nil INTERACTIVE argument means to run the `post-self-insert-hook'."
;; starts a page.
(or was-page-start
(move-to-left-margin nil t)))))
- (if (not interactive)
+ (unwind-protect
+ (if (not interactive)
;; FIXME: For non-interactive uses, many calls actually just want
;; (insert "\n"), so maybe we should do just that, so as to avoid
;; the risk of filling or running abbrevs unexpectedly.
@@ -441,7 +445,9 @@ A non-nil INTERACTIVE argument means to run the `post-self-insert-hook'."
;; We first used let-binding to protect the hook, but that was naive
;; since add-hook affects the symbol-default value of the variable,
;; whereas the let-binding might only protect the buffer-local value.
- (remove-hook 'post-self-insert-hook postproc))))
+ (remove-hook 'post-self-insert-hook postproc)))
+ (cl-assert (not (member postproc post-self-insert-hook)))
+ (cl-assert (not (member postproc (default-value 'post-self-insert-hook))))))
nil)
(defun set-hard-newline-properties (from to)