diff options
Diffstat (limited to 'lisp/ibuf-ext.el')
| -rw-r--r-- | lisp/ibuf-ext.el | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lisp/ibuf-ext.el b/lisp/ibuf-ext.el index 686bc392b60..2c841fa7e0a 100644 --- a/lisp/ibuf-ext.el +++ b/lisp/ibuf-ext.el @@ -1033,8 +1033,11 @@ group definitions by setting `ibuffer-filter-groups' to nil." (ibuffer-jump-to-buffer (buffer-name buf))))) (defun ibuffer-push-filter (filter-specification) - "Add FILTER-SPECIFICATION to `ibuffer-filtering-qualifiers'." - (push filter-specification ibuffer-filtering-qualifiers)) + "Add FILTER-SPECIFICATION to `ibuffer-filtering-qualifiers'. +If FILTER-SPECIFICATION is already in the list then return nil. Otherwise, +return the updated list." + (unless (member filter-specification ibuffer-filtering-qualifiers) + (push filter-specification ibuffer-filtering-qualifiers))) ;;;###autoload (defun ibuffer-decompose-filter () |