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-rw-r--r--lisp/isearch.el13
1 files changed, 8 insertions, 5 deletions
diff --git a/lisp/isearch.el b/lisp/isearch.el
index 31571e11cd5..b180e63d8e8 100644
--- a/lisp/isearch.el
+++ b/lisp/isearch.el
@@ -1956,11 +1956,14 @@ and reads its face argument using `hi-lock-read-face-name'."
(defun isearch-delete-char ()
- "Discard last input item and move point back.
-Last input means the last character or the last isearch command
-that added or deleted characters from the search string,
-moved point, toggled regexp mode or case-sensitivity, etc.
-If no previous match was done, just beep."
+ "Undo last input item during a search.
+
+An input item is the result of a command that pushes a new state
+of isearch (as recorded by the `isearch--state' structure) to
+`isearch-cmds'. Info node `(emacs)Basic Isearch' explains when
+Emacs records a new input item.
+
+If no input items have been entered yet, just beep."
(interactive)
(if (null (cdr isearch-cmds))
(ding)