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Add shortdoc navigation commands

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* lisp/emacs-lisp/shortdoc.el (text-property-search): Require.
(shortdoc-mode): New major mode.
(shortdoc-mode-map): New variable.
(shortdoc--goto-section): New macro.
(shortdoc-next, shortdoc-previous, shortdoc-next-section)
(shortdoc-previous-section): New commands.
(shortdoc-display-group): Use new shortdoc-models.  Propertize
section header.
(shortdoc--display-function): Propertize function header.
This commit is contained in:
Stefan Kangas 2020-10-28 16:43:32 +01:00
parent 4f6b7a0149
commit 122ace858b
1 changed files with 53 additions and 3 deletions
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56
lisp/emacs-lisp/shortdoc.el
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@ -25,6 +25,7 @@
;;; Code:
(require 'seq)
(require 'text-property-search)
(eval-when-compile (require 'cl-lib))
(defgroup shortdoc nil
@ -1065,7 +1066,7 @@ There can be any number of :example/:result elements."
(let ((inhibit-read-only t)
(prev nil))
(erase-buffer)
(special-mode)
(shortdoc-mode)
(button-mode)
(mapc
(lambda (data)
@ -1076,7 +1077,8 @@ There can be any number of :example/:result elements."
(insert "\n"))
(insert (propertize
(concat (substitute-command-keys data) "\n\n")
'face '(variable-pitch (:height 1.3 :weight bold)))))
'face '(variable-pitch (:height 1.3 :weight bold))
'shortdoc-section t)))
;; There may be functions not yet defined in the data.
((fboundp (car data))
(when prev
@ -1091,7 +1093,8 @@ There can be any number of :example/:result elements."
(start-section (point))
arglist-start)
;; Function calling convention.
(insert "(")
(insert (propertize "("
'shortdoc-function t))
(if (plist-get data :no-manual)
(insert (symbol-name function))
(insert-text-button
@ -1201,6 +1204,53 @@ Example:
(setq slist (cdr slist)))
(setcdr slist (cons elem (cdr slist))))))
(defvar shortdoc-mode-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd "n") 'shortdoc-next)
(define-key map (kbd "p") 'shortdoc-previous)
(define-key map (kbd "C-c C-n") 'shortdoc-next-section)
(define-key map (kbd "C-c C-p") 'shortdoc-previous-section)
map)
"Keymap for `shortdoc-mode'")
(define-derived-mode shortdoc-mode special-mode "shortdoc"
"Mode for shortdoc.")
(defmacro shortdoc--goto-section (arg sym &optional reverse)
`(progn
(unless (natnump ,arg)
(setq ,arg 1))
(while (< 0 ,arg)
(,(if reverse
'text-property-search-backward
'text-property-search-forward)
,sym t)
(setq ,arg (1- ,arg)))))
(defun shortdoc-next (&optional arg)
"Move cursor to next function."
(interactive "p")
(shortdoc--goto-section arg 'shortdoc-function))
(defun shortdoc-previous (&optional arg)
"Move cursor to previous function."
(interactive "p")
(shortdoc--goto-section arg 'shortdoc-function t)
;; FIXME: Why is this needed?
(backward-char 1))
(defun shortdoc-next-section (&optional arg)
"Move cursor to next section."
(interactive "p")
(shortdoc--goto-section arg 'shortdoc-section))
(defun shortdoc-previous-section (&optional arg)
"Move cursor to previous section."
(interactive "p")
(shortdoc--goto-section arg 'shortdoc-section t)
;; FIXME: Why is this needed?
(forward-line -2))
(provide 'shortdoc)
;;; shortdoc.el ends here