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(describe-mode): Fix bug#80170

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* lisp/help-fns.el (describe-mode--minor-modes): Add argument `buffer`.
(describe-mode): Use it to fix call to `documentation` so the
docstrings are computed in the right buffer and thus show
correctly when bindings are shadowed by minor modes.
This commit is contained in:
Stefan Monnier 2026-02-11 15:53:09 -05:00
parent a1e32130de
commit 451d5c6f05
1 changed files with 10 additions and 5 deletions
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15
lisp/help-fns.el
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@ -2242,7 +2242,7 @@ is enabled in the Help buffer."
(insert (format "Minor mode%s enabled in this buffer:"
(if (length> local-minors 1)
"s" ""))))
(describe-mode--minor-modes local-minors))
(describe-mode--minor-modes local-minors nil buffer))
;; Document the major mode.
(let ((major (buffer-local-value 'major-mode buffer)))
@ -2269,7 +2269,9 @@ is enabled in the Help buffer."
(help-function-def--button-function
major file-name))))))
(insert ":\n\n"
(help-split-fundoc (documentation major) nil 'doc)
(help-split-fundoc (with-current-buffer buffer
(documentation major))
nil 'doc)
(with-current-buffer buffer
(help-fns--list-local-commands)))
(ensure-empty-lines 1)
@ -2280,7 +2282,7 @@ is enabled in the Help buffer."
(insert (format "Global minor mode%s enabled:"
(if (length> global-minor-modes 1)
"s" ""))))
(describe-mode--minor-modes global-minor-modes t)
(describe-mode--minor-modes global-minor-modes t buffer)
(unless describe-mode-outline
(when (re-search-forward "^\f")
(beginning-of-line)
@ -2297,7 +2299,7 @@ is enabled in the Help buffer."
;; For the sake of IELM and maybe others
nil)))))
(defun describe-mode--minor-modes (modes &optional global)
(defun describe-mode--minor-modes (modes &optional global buffer)
(dolist (mode (seq-sort #'string< modes))
(let ((pretty-minor-mode
(capitalize
@ -2338,7 +2340,10 @@ is enabled in the Help buffer."
"no indicator"
(format "indicator%s"
indicator)))))
(insert (or (help-split-fundoc (documentation mode) nil 'doc)
(insert (or (help-split-fundoc
(with-current-buffer (or buffer (current-buffer))
(documentation mode))
nil 'doc)
"No docstring"))
(when describe-mode-outline
(insert "\n\n")))))