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| author | Lars Ingebrigtsen <larsi@gnus.org> | 2021-09-29 17:27:20 +0200 |
|---|---|---|
| committer | Lars Ingebrigtsen <larsi@gnus.org> | 2021-09-29 17:28:02 +0200 |
| commit | dab846e04ff9e4524a730936306ead149f9b9760 (patch) | |
| tree | 6de042c86685ef45818cf36bb5bc330c37896517 /lisp/gnus/gnus-range.el | |
| parent | b4b4cc98ac271d079916a4c412e134fe5b4ba4d8 (diff) | |
| download | emacs-dab846e04ff9e4524a730936306ead149f9b9760.tar.gz emacs-dab846e04ff9e4524a730936306ead149f9b9760.tar.bz2 emacs-dab846e04ff9e4524a730936306ead149f9b9760.zip | |
Add a comment about bug#50877 for gnus-set-difference
Diffstat (limited to 'lisp/gnus/gnus-range.el')
| -rw-r--r-- | lisp/gnus/gnus-range.el | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lisp/gnus/gnus-range.el b/lisp/gnus/gnus-range.el index 456209f3d9a..a8f09b63711 100644 --- a/lisp/gnus/gnus-range.el +++ b/lisp/gnus/gnus-range.el @@ -40,6 +40,8 @@ If RANGE is a single range, return (RANGE). Otherwise, return RANGE." (define-obsolete-function-alias 'gnus-copy-sequence 'copy-tree "27.1") +;;; We could be using `seq-difference' here, but it's much slower +;;; on these data sets. See bug#50877. (defun gnus-set-difference (list1 list2) "Return a list of elements of LIST1 that do not appear in LIST2." (let ((hash2 (make-hash-table :test 'eq)) |