Bind "L" to toggle locals during debugging

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### New features
 
+* [#2828](https://github.com/clojure-emacs/cider/pull/2828): Bind "L" to toggle display of locals during a debug session.
 * [#2800](https://github.com/clojure-emacs/cider/pull/2800): Add support for force-out debugger command.
 
 ### Changes

cider-debug.el

@@ -326,7 +326,15 @@ of `cider-interactive-eval' in debug sessions."
     (tool-bar-add-item "exit" #'cider-debug-mode-send-reply :quit :label "Quit")
     tool-bar-map))
 
-(defvar cider--debug-mode-map)
+(defvar cider--debug-mode-map
+  (let ((map (make-sparse-keymap)))
+    ;; Bind the `:here` command to both h and H, because it behaves differently
+    ;; if invoked with an uppercase letter.
+    (define-key map "h" #'cider-debug-move-here)
+    (define-key map "H" #'cider-debug-move-here)
+    (define-key map "L" #'cider-debug-toggle-locals)
+    map)
+  "The active keymap during a debugging session.")
 
 (define-minor-mode cider--debug-mode
   "Mode active during debug sessions.
@@ -382,11 +390,6 @@ In order to work properly, this mode must be activated by
     (when nrepl-ongoing-sync-request
       (ignore-errors (exit-recursive-edit)))))
 
-;;; Bind the `:here` command to both h and H, because it behaves differently if
-;;; invoked with an uppercase letter.
-(define-key cider--debug-mode-map "h" #'cider-debug-move-here)
-(define-key cider--debug-mode-map "H" #'cider-debug-move-here)
-
 (defun cider--debug-remove-overlays (&optional buffer)
   "Remove CIDER debug overlays from BUFFER if variable `cider--debug-mode' is nil."
   (when (or (not buffer) (buffer-live-p buffer))

doc/modules/ROOT/pages/debugging/debugger.adoc

@@ -112,6 +112,9 @@ keys, although there are some differences.
 | kbd:[l]
 | Inspect local variables
 
+| kbd:[L]
+| Toggle display of local variables
+
 | kbd:[j]
 | Inject a value into running code