(c-outline-level): Bind

buffer-invisibility-spec.

2 files changed, 10 insertions, 6 deletions

diff --git a/lisp/progmodes/c-mode.el b/lisp/progmodes/c-mode.el
index ab9cf8dc992..1d3c241c96f 100644
--- a/lisp/progmodes/c-mode.el
+++ b/lisp/progmodes/c-mode.el
@@ -390,9 +390,11 @@ if that value is non-nil."
   (run-hooks 'c-mode-hook))
 
 (defun c-outline-level ()
-  (save-excursion
-    (skip-chars-forward "\t ")
-    (current-column)))
+  ;; This so that `current-column' DTRT in otherwise-hidden text.
+  (let (buffer-invisibility-spec)
+    (save-excursion
+      (skip-chars-forward "\t ")
+      (current-column))))
 
 ;; This is used by indent-for-comment
 ;; to decide how much to indent a comment in C code
diff --git a/lisp/progmodes/cc-cmds.el b/lisp/progmodes/cc-cmds.el
index dfe34be8e66..35f1d0917c7 100644
--- a/lisp/progmodes/cc-cmds.el
+++ b/lisp/progmodes/cc-cmds.el
@@ -1065,9 +1065,11 @@ comment."
 
 ;; used by outline-minor-mode
 (defun c-outline-level ()
-  (save-excursion
-    (skip-chars-forward "\t ")
-    (current-column)))
+  ;; This so that `current-column' DTRT in otherwise-hidden text.
+  (let (buffer-invisibility-spec)
+    (save-excursion
+      (skip-chars-forward "\t ")
+      (current-column))))
 
 
 (defun c-up-conditional (count)