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| author | Lars Ingebrigtsen <larsi@gnus.org> | 2021-02-06 12:03:43 +0100 |
|---|---|---|
| committer | Lars Ingebrigtsen <larsi@gnus.org> | 2021-02-06 12:03:47 +0100 |
| commit | 2476abc1f24f1b2385648cfb08cd9f178422497d (patch) | |
| tree | f8387a7ce2df6e3b38e05e9e6484a4d0bf0db419 | |
| parent | 23a7da9148c84dbcc228dda37c9bcebfc2a004d2 (diff) | |
| download | emacs-2476abc1f24f1b2385648cfb08cd9f178422497d.tar.gz | |
Allow provided-mode-derived-p to work on aliases
* lisp/subr.el (provided-mode-derived-p): Allow this to work on
modes that are aliases of other modes (bug#46331). For instance:
(provided-mode-derived-p 'javascript-mode 'prog-mode)
| -rw-r--r-- | lisp/subr.el | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lisp/subr.el b/lisp/subr.el index 6e52bd20df2..c1624aa9c02 100644 --- a/lisp/subr.el +++ b/lisp/subr.el @@ -2231,6 +2231,10 @@ Affects only hooks run in the current buffer." "Non-nil if MODE is derived from one of MODES or their aliases. Uses the `derived-mode-parent' property of the symbol to trace backwards. If you just want to check `major-mode', use `derived-mode-p'." + ;; If MODE is an alias, then look up the real mode function first. + (when-let ((alias (symbol-function mode))) + (when (symbolp alias) + (setq mode alias))) (while (and (not (memq mode modes)) |