Hi List,
I often missed the following command for wrapping existing content into
src-blocks in the past, besides knowing about
`org-babel-demarcate-block' and easy template insertion. Would it make
sense to add it to Org-mode?
I made it cover several use cases:
- Wrap sexp at point - perfect when on first paren of a nested list,
or when a string should be wrapped in a programming-mode, or a
word in a text-mode.
- Wrap region between point and +/- N lines forward/backward (very
fast because no point movement is involved).
- Wrap active region.
Usage:
1. wrap active region or (if none) sexp-at-point in emacs-lisp src-block
,----
| M-x org-wrap-in-src-block
`----
2. wrap active region or (if none) sexp-at-point in src-block, prompt
user for Org-Babel language
,----
| C-u M-x org-wrap-in-src-block
`----
3. prompt user for Org-Babel language and number of lines to wrap
(forward or backward)
,----
| C-u C-u M-x org-wrap-in-src-block
`----
#+begin_src emacs-lisp
(defun org-wrap-in-src-block (&optional lang lines)
"Wrap sexp-at-point or region in src-block.
Use Org-Babel LANGuage for the src-block if given, Emacs-Lisp
otherwise. A region instead of the sexp-at-point is wrapped if
either
- optional argument LINES is an (positive or negative) integer
- or the region is active
In the first case the region is determined by moving +/- LINES
forward/backward from point using `forward-line', in the second
case the active region is used.
When called with prefix argument 'C-u', prompt the user for the
Org-Babel language to use. When called with two prefix arguments
'C-u C-u', prompt the user for both the Org-Babel language to use
and the number of lines to be wrapped."
(interactive
(cond
((equal current-prefix-arg nil) nil)
((equal current-prefix-arg '(4))
(list
(ido-completing-read "Org-Babel language: "
(mapcar
(lambda (--lang)
(symbol-name (car --lang)))
org-babel-load-languages)
nil nil nil nil "emacs-lisp")))
((equal current-prefix-arg '(16))
(list
(ido-completing-read "Org-Babel language: "
(mapcar
(lambda (--lang)
(symbol-name (car --lang)))
org-babel-load-languages)
nil nil nil nil "emacs-lisp")
(read-number "Number of lines to wrap: " 1)))))
(let* ((language (or lang "emacs-lisp"))
(beg (or (and (not lines)
(region-active-p)
(region-beginning))
(point)))
(marker (save-excursion (goto-char beg) (point-marker)))
(bol (save-excursion (goto-char beg) (bolp)))
(end (cond
(lines (save-excursion
(forward-line lines) (point)))
((region-active-p)(region-end))
(t (save-excursion
(forward-sexp) (point)))))
(cut-strg (buffer-substring beg end)))
(delete-region beg end)
(goto-char (marker-position marker))
(insert
(format
"%s#+begin_src %s\n%s%s#+end_src\n"
(if (or (and lines (< lines 0)) bol) "" "\n")
language
cut-strg
(if lines "" "\n")))
(set-marker marker nil)))
#+end_src
--
cheers,
Thorsten
