(defvar skeleton-filter 'identity
"Function for transforming a skeleton-proxy's aliases' variable value.")
-
(defvar skeleton-untabify t
"When non-`nil' untabifies when deleting backwards with element -ARG.")
+(defvar skeleton-newline-indent-rigidly nil
+ "When non-`nil', indent rigidly under current line for element `\\n'.
+Else use mode's `indent-line-function'.")
(defvar skeleton-further-elements ()
"A buffer-local varlist (see `let') of mode specific skeleton elements.
(defvar skeleton-debug nil
"*If non-nil `define-skeleton' will override previous definition.")
+;; reduce the number of compiler warnings
+(defvar skeleton)
+(defvar skeleton-modified)
+(defvar skeleton-point)
+(defvar skeleton-regions)
;;;###autoload
(defmacro define-skeleton (command documentation &rest skeleton)
;; This command isn't meant to be called, only it's aliases with meaningful
;; names are.
;;;###autoload
-(defun skeleton-proxy (&optional arg)
- "Insert a skeleton defined by variable of same name (see `skeleton-insert').
+(defun skeleton-proxy (&optional str arg)
+ "Insert skeleton defined by variable of same name (see `skeleton-insert').
Prefix ARG allows wrapping around words or regions (see `skeleton-insert').
This command can also be an abbrev expansion (3rd and 4th columns in
-\\[edit-abbrevs] buffer: \"\" command-name)."
- (interactive "*P")
+\\[edit-abbrevs] buffer: \"\" command-name).
+
+When called as a function, optional first argument STR may also be a string
+which will be the value of `str' whereas the skeleton's interactor is then
+ignored."
+ (interactive "*P\nP")
(let ((function (nth 1 (backtrace-frame 1))))
(if (eq function 'nth) ; uncompiled lisp function
(setq function (nth 1 (backtrace-frame 5)))
(if (eq function 'byte-code) ; tracing byte-compiled function
(setq function (nth 1 (backtrace-frame 2)))))
(if (not (setq function (funcall skeleton-filter (symbol-value function))))
- (if (or (eq this-command 'self-insert-command)
- (eq this-command 'skeleton-pair-insert-maybe)
- (eq this-command 'expand-abbrev))
- (setq buffer-undo-list
- (primitive-undo 1 buffer-undo-list)))
+ (if (memq this-command '(self-insert-command
+ skeleton-pair-insert-maybe
+ expand-abbrev))
+ (setq buffer-undo-list (primitive-undo 1 buffer-undo-list)))
(skeleton-insert function
nil
(if (setq skeleton-abbrev-cleanup
(or (eq this-command 'self-insert-command)
(eq this-command 'skeleton-pair-insert-maybe)))
()
- ;; Pretend C-x a e passed the prefix arg to us
+ ;; Pretend C-x a e passed its prefix arg to us
(if (or arg current-prefix-arg)
(prefix-numeric-value (or arg
- current-prefix-arg)))))
+ current-prefix-arg))))
+ (if (stringp str)
+ str))
(if skeleton-abbrev-cleanup
(setq deferred-action-list t
deferred-action-function 'skeleton-abbrev-cleanup
;;;###autoload
-(defun skeleton-insert (skeleton &optional no-newline regions)
+(defun skeleton-insert (skeleton &optional no-newline skeleton-regions str)
"Insert the complex statement skeleton SKELETON describes very concisely.
If optional NO-NEWLINE is nil the skeleton will end on a line of its own.
in alphabetical order, the 3 interregions are simply the last 3 regions. But
if you marked B A [] C, the interregions are B-A, A-[], []-C.
+Optional fourth STR is the value for the variable `str' within the skeleton.
+When this is non-`nil' the interactor gets ignored, and this should be a valid
+skeleton element.
+
SKELETON is made up as (INTERACTOR ELEMENT ...). INTERACTOR may be nil if
not needed, a prompt-string or an expression for complex read functions.
If ELEMENT is a string or a character it gets inserted (see also
`skeleton-transformation'). Other possibilities are:
- \\n go to next line and align cursor
+ \\n go to next line and indent according to mode
_ interesting point, interregion here, point after termination
> indent line (or interregion if > _) according to major mode
& do next ELEMENT if previous moved point
non-empty string. \\[keyboard-quit] terminates skeleton insertion, but
continues after `resume:' and positions at `_' if any. If INTERACTOR in such
a subskeleton is a prompt-string which contains a \".. %s ..\" it is
-formatted with `skeleton-subprompt'.
+formatted with `skeleton-subprompt'. Such an INTERACTOR may also a list of
+strings with the subskeleton being repeated once for each string.
Quoted lisp-expressions are evaluated evaluated for their side-effect.
Other lisp-expressions are evaluated and the value treated as above.
then: insert previously read string once more
help help-form during interaction with the user or `nil'
input initial input (string or cons with index) while reading str
- quit non-nil after resume: section is entered by keyboard quit
- v1, v2 local variables for memorising anything you want"
- (and regions
- (setq regions
- (if (> regions 0)
+ v1, v2 local variables for memorising anything you want
+
+When done with skeleton, but before going back to `_'-point call
+`skeleton-end-hook' if that is non-`nil'."
+ (and skeleton-regions
+ (setq skeleton-regions
+ (if (> skeleton-regions 0)
(list (point-marker)
- (save-excursion (forward-word regions) (point-marker)))
- (setq regions (- regions))
- ;; copy regions - 1 elements from `mark-ring'
+ (save-excursion (forward-word skeleton-regions)
+ (point-marker)))
+ (setq skeleton-regions (- skeleton-regions))
+ ;; copy skeleton-regions - 1 elements from `mark-ring'
(let ((l1 (cons (mark-marker) mark-ring))
(l2 (list (point-marker))))
- (while (and l1 (> regions 0))
+ (while (and l1 (> skeleton-regions 0))
(setq l2 (cons (car l1) l2)
- regions (1- regions)
+ skeleton-regions (1- skeleton-regions)
l1 (cdr l1)))
(sort l2 '<))))
- (goto-char (car regions))
- (setq regions (cdr regions)))
+ (goto-char (car skeleton-regions))
+ (setq skeleton-regions (cdr skeleton-regions)))
(let ((beg (point))
- modified point resume: help input quit v1 v2)
+ skeleton-modified skeleton-point resume: help input v1 v2)
(or no-newline
(eolp)
(goto-char (prog1 (point)
(newline))))))
(unwind-protect
(eval `(let ,skeleton-further-elements
- (skeleton-internal-list skeleton)))
+ (skeleton-internal-list skeleton str)))
+ (run-hooks 'skeleton-end-hook)
(sit-for 0)
(or (pos-visible-in-window-p beg)
(progn
(goto-char beg)
(recenter 0)))
- (if point
- (goto-char point)))))
+ (if skeleton-point
+ (goto-char skeleton-point)))))
user didn't modify input.
While reading, the value of `minibuffer-help-form' is variable `help' if that
is non-`nil' or a default string."
- (or no-newline
+ (setq skeleton-newline nil)
+ (or (symbol-value 'no-newline) ; cheat on compiler warning
(eolp)
(goto-char (prog1 (point)
+ (if recursive (setq skeleton-newline 2))
(indent-to (prog1
(current-indentation)
(newline))))))
- (let ((minibuffer-help-form (or help (if recursive "\
+ (let ((minibuffer-help-form (or (symbol-value 'help) (if recursive "\
As long as you provide input you will insert another subskeleton.
If you enter the empty string, the loop inserting subskeletons is
automatically, and you are prompted to fill in the variable parts."))))
(setq str (if (stringp str)
(read-string (format str skeleton-subprompt)
- (setq initial-input (or initial-input input)))
+ (setq initial-input (or initial-input
+ (symbol-value 'input))))
(eval str))))
(if (and recursive
(or (null str)
(signal 'quit t)
str))
-
-(defun skeleton-internal-list (skeleton &optional recursive)
+(defun skeleton-internal-list (skeleton &optional str recursive)
(let* ((start (save-excursion (beginning-of-line) (point)))
(column (current-column))
(line (buffer-substring start
(save-excursion (end-of-line) (point))))
- (str `(setq str (skeleton-read ',(car skeleton) nil ,recursive)))
opoint)
- (while (setq modified (eq opoint (point))
+ (or str
+ (setq str `(setq str (skeleton-read ',(car skeleton) nil ,recursive))))
+ (while (setq skeleton-modified (eq opoint (point))
opoint (point)
skeleton (cdr skeleton))
(condition-case quit
(skeleton-internal-1 (car skeleton))
(quit
(if (eq (cdr quit) 'recursive)
- (progn
- (setq recursive 'quit)
- (while (if skeleton
- (not (eq (car (setq skeleton (cdr skeleton)))
- 'resume:)))))
+ (setq recursive 'quit
+ skeleton (memq 'resume: skeleton))
;; remove the subskeleton as far as it has been shown
;; the subskeleton shouldn't have deleted outside current line
- ;; problematic when wrapping text starting on same line
- (end-of-line)
+ (end-of-line skeleton-newline)
(delete-region start (point))
(insert line)
(move-to-column column)
(defun skeleton-internal-1 (element &optional literal)
- (cond ((and (integerp element) ; -num
- (< element 0))
- (if skeleton-untabify
- (backward-delete-char-untabify (- element))
- (delete-backward-char (- element))))
- ((char-or-string-p element)
- (insert-before-markers (if (and skeleton-transformation
- (not literal))
- (funcall skeleton-transformation element)
- element)))
+ (cond ((char-or-string-p element)
+ (if (and (integerp element) ; -num
+ (< element 0))
+ (if skeleton-untabify
+ (backward-delete-char-untabify (- element))
+ (delete-backward-char (- element)))
+ (insert-before-markers (if (and skeleton-transformation
+ (not literal))
+ (funcall skeleton-transformation element)
+ element))))
((eq element '\n) ; actually (eq '\n 'n)
- (newline)
- (indent-relative t))
+ (if (and skeleton-regions
+ (eq (nth 1 skeleton) '_))
+ (progn
+ (or (eolp)
+ (newline))
+ (indent-region (point) (car skeleton-regions) nil))
+ (if skeleton-newline-indent-rigidly
+ (indent-to (prog1 (current-indentation)
+ (newline)))
+ (newline)
+ (indent-according-to-mode))))
((eq element '>)
- (if (and regions
+ (if (and skeleton-regions
(eq (nth 1 skeleton) '_))
- (indent-region (point) (car regions) nil)
- (indent-for-tab-command)))
+ (indent-region (point) (car skeleton-regions) nil)
+ (indent-according-to-mode)))
((eq element '_)
- (if regions
+ (if skeleton-regions
(progn
- (goto-char (car regions))
- (setq regions (cdr regions)))
- (or point
- (setq point (point)))))
+ (goto-char (car skeleton-regions))
+ (setq skeleton-regions (cdr skeleton-regions)))
+ (or skeleton-point
+ (setq skeleton-point (point)))))
((eq element '&)
- (if modified
+ (if skeleton-modified
(setq skeleton (cdr skeleton))))
((eq element '|)
- (or modified
+ (or skeleton-modified
(setq skeleton (cdr skeleton))))
- ((if (consp element)
- (or (stringp (car element))
- (consp (car element))))
- (while (skeleton-internal-list element t)))
- ((if (consp element)
- (eq 'quote (car element)))
+ ((eq 'quote (car-safe element))
(eval (nth 1 element)))
+ ((or (stringp (car-safe element))
+ (consp (car-safe element)))
+ (if (symbolp (car-safe (car element)))
+ (while (skeleton-internal-list element nil t))
+ (setq literal (car element))
+ (while literal
+ (skeleton-internal-list element (car literal))
+ (setq literal (cdr literal)))))
((null element))
((skeleton-internal-1 (eval element) t))))
+
;; Maybe belongs into simple.el or elsewhere
(define-skeleton local-variables-section
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