[nongnu] elpa/page-break-lines 87e801efb8 55/80: Merge pull request #20 from peniblec/master

[ELPA Syncer]

branch: elpa/page-break-lines
commit 87e801efb816b24e83ebf84c052001e178e180bc
Merge: fd3b7e38ad 5872e5d51c
Author: Steve Purcell <steve@sanityinc.com>
Commit: GitHub <noreply@github.com>

    Merge pull request #20 from peniblec/master
    
    Fix disabling when major mode is derived from one of page-break-lines-modes
---
 page-break-lines.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/page-break-lines.el b/page-break-lines.el
index a6387677ca..3767e3707b 100644
--- a/page-break-lines.el
+++ b/page-break-lines.el
@@ -137,7 +137,7 @@ its display table will be modified as necessary."
                      (new-display-entry (vconcat (make-list width glyph))))
                 (unless (equal new-display-entry (elt buffer-display-table 
?\^L))
                   (aset buffer-display-table ?\^L new-display-entry)))))
-        (when (and (member major-mode page-break-lines-modes)
+        (when (and (apply 'derived-mode-p page-break-lines-modes)
                    buffer-display-table)
           (aset buffer-display-table ?\^L nil))))))