(comint-snapshot-last-prompt): Bind `inhibit-read-only' to t to support

read-only prompts.
(comint-output-filter): Likewise.

diff --git a/lisp/comint.el b/lisp/comint.el
index ea06ab4ac5f5f3a29968dbc663913cbb18cc208a..6840e4d6c5addcb659a5312249e4132e1f889051 100644 (file)
--- a/lisp/comint.el
+++ b/lisp/comint.el
@@ -1535,9 +1535,10 @@ either globally or locally.")
 ;; prompt overlay.
 (defun comint-snapshot-last-prompt ()
   (when comint-last-prompt-overlay
-    (add-text-properties (overlay-start comint-last-prompt-overlay)
-                        (overlay-end comint-last-prompt-overlay)
-                        (overlay-properties comint-last-prompt-overlay))))
+    (let ((inhibit-read-only t))
+      (add-text-properties (overlay-start comint-last-prompt-overlay)
+                           (overlay-end comint-last-prompt-overlay)
+                           (overlay-properties comint-last-prompt-overlay)))))
 
 (defun comint-carriage-motion (string)
   "Handle carriage control characters in comint output.
@@ -1661,10 +1662,11 @@ This function should be in the list `comint-output-filter-functions'."
            (set-marker (process-mark process) (point))
 
            (unless comint-use-prompt-regexp-instead-of-fields
-             (add-text-properties comint-last-output-start (point)
-                                  '(rear-nonsticky t
-                                    field output
-                                    inhibit-line-move-field-capture t)))
+              (let ((inhibit-read-only t))
+                (add-text-properties comint-last-output-start (point)
+                                     '(rear-nonsticky t
+                                       field output
+                                       inhibit-line-move-field-capture t))))
 
            ;; Highlight the prompt, where we define `prompt' to mean
            ;; the most recent output that doesn't end with a newline.