diff options
Diffstat (limited to 'lisp/emacs-lisp/shortdoc.el')
| -rw-r--r-- | lisp/emacs-lisp/shortdoc.el | 138 |
1 files changed, 98 insertions, 40 deletions
diff --git a/lisp/emacs-lisp/shortdoc.el b/lisp/emacs-lisp/shortdoc.el index 658edd67527..315afd4312b 100644 --- a/lisp/emacs-lisp/shortdoc.el +++ b/lisp/emacs-lisp/shortdoc.el @@ -41,41 +41,78 @@ '((t :inherit variable-pitch)) "Face used for a section.") -(defvar shortdoc--groups nil) +;;;###autoload +(progn + (defvar shortdoc--groups nil) -(defmacro define-short-documentation-group (group &rest functions) - "Add GROUP to the list of defined documentation groups. + (defmacro define-short-documentation-group (group &rest functions) + "Add GROUP to the list of defined documentation groups. FUNCTIONS is a list of elements on the form: - (fun + (FUNC :no-manual BOOL :args ARGS - :eval EXAMPLE-FORM + :eval EVAL :no-eval EXAMPLE-FORM - :no-eval* EXAMPLE-FORM :no-value EXAMPLE-FORM + :no-eval* EXAMPLE-FORM :result RESULT-FORM - :result-string RESULT-FORM + :result-string RESULT-STRING :eg-result RESULT-FORM - :eg-result-string RESULT-FORM) + :eg-result-string RESULT-STRING) + +FUNC is the function being documented. -BOOL should be non-nil if the function isn't documented in the +NO-MANUAL should be non-nil if FUNC isn't documented in the manual. -ARGS is optional; the function's signature is displayed if ARGS -is not present. +ARGS is optional list of function FUNC's arguments. FUNC's +signature is displayed automatically if ARGS is not present. +Specifying ARGS might be useful where you don't want to document +some of the uncommon arguments a function might have. + +While the `:no-manual' and `:args' property can be used for +any (FUNC ..) form, all of the other properties shown above +cannot be used simultaneously in such a form. + +Here are some common forms with examples of properties that go +together: + +1. Document a form or string, and its evaluated return value. + (FUNC + :eval EVAL) + +If EVAL is a string, it will be inserted as is, and then that +string will be `read' and evaluated. -If EVAL isn't a string, it will be printed with `prin1', and then -evaluated to give a result, which is also printed. If it's a -string, it'll be inserted as is, then the string will be `read', -and then evaluated. +2. Document a form or string, but manually document its evaluation + result. The provided form will not be evaluated. -There can be any number of :example/:result elements." - (declare (indent defun)) - `(progn - (setq shortdoc--groups (delq (assq ',group shortdoc--groups) - shortdoc--groups)) - (push (cons ',group ',functions) shortdoc--groups))) + (FUNC + :no-eval EXAMPLE-FORM + :result RESULT-FORM) ;Use `:result-string' if value is in string form + +Using `:no-value' is the same as using `:no-eval'. + +Use `:no-eval*' instead of `:no-eval' where the successful +execution of the documented form depends on some conditions. + +3. Document a form or string EXAMPLE-FORM. Also manually + document an example result. This result could be unrelated to + the documented form. + + (FUNC + :no-eval EXAMPLE-FORM + :eg-result RESULT-FORM) ;Use `:eg-result-string' if value is in string form + +A FUNC form can have any number of `:no-eval' (or `:no-value'), +`:no-eval*', `:result', `:result-string', `:eg-result' and +`:eg-result-string' properties." + (declare (indent defun)) + `(progn + (setq shortdoc--groups (delq (assq ',group shortdoc--groups) + shortdoc--groups)) + (push (cons ',group ',functions) shortdoc--groups)))) (define-short-documentation-group alist "Alist Basics" @@ -206,6 +243,8 @@ There can be any number of :example/:result elements." "Predicates for Strings" (string-equal :eval (string-equal "foo" "foo")) + (string-equal-ignore-case + :eval (string-equal-ignore-case "foo" "FOO")) (eq :eval (eq "foo" "foo")) (eql @@ -223,11 +262,16 @@ There can be any number of :example/:result elements." :no-manual t :eval (string-blank-p " \n")) (string-lessp - :eval (string-lessp "foo" "bar")) + :eval (string-lessp "foo" "bar") + :eval (string-lessp "pic4.png" "pic32.png") + :eval (string-lessp "1.1" "1 2")) (string-greaterp :eval (string-greaterp "foo" "bar")) (string-version-lessp - :eval (string-version-lessp "pic4.png" "pic32.png")) + :eval (string-version-lessp "pic4.png" "pic32.png") + :eval (string-version-lessp "1.1" "1 2")) + (string-collate-lessp + :eval (string-collate-lessp "1.1" "1 2")) (string-prefix-p :eval (string-prefix-p "foo" "foobar")) (string-suffix-p @@ -311,6 +355,13 @@ There can be any number of :example/:result elements." (abbreviate-file-name :no-eval (abbreviate-file-name "/home/some-user") :eg-result "~some-user") + (file-parent-directory + :eval (file-parent-directory "/foo/bar") + :eval (file-parent-directory "~") + :eval (file-parent-directory "/tmp/") + :eval (file-parent-directory "foo/bar") + :eval (file-parent-directory "foo") + :eval (file-parent-directory "/")) "Quoted File Names" (file-name-quote :args (name) @@ -426,7 +477,9 @@ There can be any number of :example/:result elements." :no-eval* (directory-files-and-attributes "/tmp/foo")) (file-expand-wildcards :no-eval (file-expand-wildcards "/tmp/*.png") - :eg-result ("/tmp/foo.png" "/tmp/zot.png")) + :eg-result ("/tmp/foo.png" "/tmp/zot.png") + :no-eval (file-expand-wildcards "/*/foo.png") + :eg-result ("/tmp/foo.png" "/var/foo.png")) (locate-dominating-file :no-eval (locate-dominating-file "foo.png" "/tmp/foo/bar/zot") :eg-result "/tmp/foo.png") @@ -544,6 +597,10 @@ There can be any number of :example/:result elements." :eval (nth 1 '(one two three))) (nthcdr :eval (nthcdr 1 '(one two three))) + (take + :eval (take 3 '(one two three four))) + (ntake + :eval (ntake 3 (list 'one 'two 'three 'four))) (elt :eval (elt '(one two three) 1)) (car-safe @@ -647,11 +704,6 @@ There can be any number of :example/:result elements." (plist-put :no-eval (setq plist (plist-put plist 'd 4)) :eq-result (a 1 b 2 c 3 d 4)) - (lax-plist-get - :eval (lax-plist-get '("a" 1 "b" 2 "c" 3) "b")) - (lax-plist-put - :no-eval (setq plist (lax-plist-put plist "d" 4)) - :eq-result '("a" 1 "b" 2 "c" 3 "d" 4)) (plist-member :eval (plist-member '(a 1 b 2 c 3) 'b)) "Data About Lists" @@ -850,6 +902,8 @@ There can be any number of :example/:result elements." :eval (seq-subseq '(a b c d e) 2 4)) (seq-take :eval (seq-take '(a b c d e) 3)) + (seq-split + :eval (seq-split [0 1 2 3 5] 2)) (seq-take-while :eval (seq-take-while #'cl-evenp [2 4 9 6 5])) (seq-uniq @@ -1131,9 +1185,6 @@ There can be any number of :example/:result elements." (ash :eval (ash 1 4) :eval (ash 16 -1)) - (lsh - :eval (lsh 1 4) - :eval (lsh 16 -1)) (logand :no-eval "(logand #b10 #b111)" :result-string "#b10") @@ -1261,16 +1312,20 @@ There can be any number of :example/:result elements." :eval (keymap-lookup (current-global-map) "C-x x g"))) ;;;###autoload -(defun shortdoc-display-group (group &optional function) +(defun shortdoc-display-group (group &optional function same-window) "Pop to a buffer with short documentation summary for functions in GROUP. -If FUNCTION is non-nil, place point on the entry for FUNCTION (if any)." +If FUNCTION is non-nil, place point on the entry for FUNCTION (if any). +If SAME-WINDOW, don't pop to a new window." (interactive (list (completing-read "Show summary for functions in: " (mapcar #'car shortdoc--groups)))) (when (stringp group) (setq group (intern group))) (unless (assq group shortdoc--groups) (error "No such documentation group %s" group)) - (pop-to-buffer (format "*Shortdoc %s*" group)) + (funcall (if same-window + #'pop-to-buffer-same-window + #'pop-to-buffer) + (format "*Shortdoc %s*" group)) (let ((inhibit-read-only t) (prev nil)) (erase-buffer) @@ -1315,15 +1370,15 @@ If FUNCTION is non-nil, place point on the entry for FUNCTION (if any)." 'action (lambda (_) (describe-function function)) 'follow-link t - 'help-echo (purecopy "mouse-1, RET: describe function")) + 'help-echo "mouse-1, RET: describe function") (insert-text-button (symbol-name function) 'face 'button 'action (lambda (_) (info-lookup-symbol function 'emacs-lisp-mode)) 'follow-link t - 'help-echo (purecopy "mouse-1, RET: show \ -function's documentation in the Info manual"))) + 'help-echo "mouse-1, RET: show \ +function's documentation in the Info manual")) (setq arglist-start (point)) (insert ")\n") ;; Doc string. @@ -1408,11 +1463,14 @@ function's documentation in the Info manual"))) If GROUP doesn't exist, it will be created. If SECTION doesn't exist, it will be added. +ELEM is a Lisp form. See `define-short-documentation-group' for +details. + Example: (shortdoc-add-function - 'file \"Predicates\" - '(file-locked-p :no-eval (file-locked-p \"/tmp\")))" + \\='file \"Predicates\" + \\='(file-locked-p :no-eval (file-locked-p \"/tmp\")))" (let ((glist (assq group shortdoc--groups))) (unless glist (setq glist (list group)) |