Fix the [ command in speedbar mode

* lisp/speedbar.el (speedbar-expand-line-descendants): Expand only
the current line -- not all subsequent lines in the speedbar
buffer (bug#35014).

1 files changed, 15 insertions, 13 deletions

diff --git a/lisp/speedbar.el b/lisp/speedbar.el
index e9c15b71ce6..5b98eb36bb9 100644
--- a/lisp/speedbar.el
+++ b/lisp/speedbar.el
@@ -3240,19 +3240,21 @@ With universal argument ARG, flush cached data."
   "Expand the line under the cursor and all descendants.
 Optional argument ARG indicates that any cache should be flushed."
   (interactive "P")
-  (speedbar-expand-line arg)
-  ;; Now, inside the area expanded here, expand all subnodes of
-  ;; the same descendant type.
-  (save-excursion
-    (speedbar-next 1) ;; Move into the list.
-    (let ((err nil))
-      (while (not err)
-        (condition-case nil
-            (progn
-              (speedbar-expand-line-descendants arg)
-              (speedbar-restricted-next 1))
-          (error (setq err t))))))
-  )
+  (save-restriction
+    (narrow-to-region (line-beginning-position)
+                      (line-beginning-position 2))
+    (speedbar-expand-line arg)
+    ;; Now, inside the area expanded here, expand all subnodes of
+    ;; the same descendant type.
+    (save-excursion
+      (speedbar-next 1) ;; Move into the list.
+      (let ((err nil))
+        (while (not err)
+          (condition-case nil
+              (progn
+                (speedbar-expand-line-descendants arg)
+                (speedbar-restricted-next 1))
+            (error (setq err t))))))))
 
 (defun speedbar-contract-line-descendants ()
   "Expand the line under the cursor and all descendants."