Indenting source code blocks in lists

Indenting source code blocks in lists

[Jarmo Hurri]

Greetings.

I am a big fan of org mode, but occasionally I feel that it is quite
difficult to figure out how to do a relatively simple task. So sorry for
this newbie question.

The manual clearly states the following:

"Since indentation is what governs the structure of these lists, many
structural constructs like #+BEGIN_... blocks can be indented to signal
that they belong to a particular item. "

Ok. By searching in Emacs for different commands containing "indent" I
was able to find out that pressing C-j in a list item indents the next
line so that a subsequently written source block would also be indented.

But let us assume that I already have a source block, and it is not
indented correctly; what is the easy way to indent this block in a list?
(I can always keep pressing spacebar, but it does not feel very
intelligent.)

--

Jarmo

Re: Indenting source code blocks in lists

[Bastien]

Hi Jarmo,

Jarmo Hurri <jarmo.hurri@syk.fi> writes:

> But let us assume that I already have a source block, and it is not
> indented correctly; what is the easy way to indent this block in a list?
> (I can always keep pressing spacebar, but it does not feel very
> intelligent.)

I select the region, then `C-x r t' to insert the whitespaces.  
But I don't feel very clever neither, we should have a better 
way for this -- something that deactivate folding and indent
to the beginning of the list item above.

-- 
 Bastien

Re: Indenting source code blocks in lists

[Nicolas Goaziou]

Hello,

Bastien <bzg@altern.org> writes:

> Jarmo Hurri <jarmo.hurri@syk.fi> writes:

>> But let us assume that I already have a source block, and it is not
>> indented correctly; what is the easy way to indent this block in a list?
>> (I can always keep pressing spacebar, but it does not feel very
>> intelligent.)

> I select the region, then `C-x r t' to insert the whitespaces.

I use C-x r o, which doesn't require to count the spaces, and is more
visual.

> But I don't feel very clever neither, we should have a better 
> way for this -- something that deactivate folding and indent
> to the beginning of the list item above.

I'm not sure we should provide this. There are already so many ways,
often in muscle memory, to achieve the same in Emacs that we probably
shouldn't bother.


Regards,

-- 
Nicolas Goaziou

Re: Indenting source code blocks in lists

[Bastien]

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Nicolas Goaziou <n.goaziou@gmail.com> writes:

>> I select the region, then `C-x r t' to insert the whitespaces.
>
> I use C-x r o, which doesn't require to count the spaces, and is more
> visual.

Clever -- I start to love this mailing list ;)

>> But I don't feel very clever neither, we should have a better 
>> way for this -- something that deactivate folding and indent
>> to the beginning of the list item above.
>
> I'm not sure we should provide this. There are already so many ways,
> often in muscle memory, to achieve the same in Emacs that we probably
> shouldn't bother.

The attached patch let `org-metaright' indent a drawer or a block
correctly.  It introduces two new function ̀org-indent-block' and 
`org-indent-drawer' which derive from local hacks I'm using quite
often now.  

Perhaps ̀org-metaright' is not the best keybinding for this function,
please suggest a better one.

Thanks,


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From 89e8c4e37b7f2f7bbf27b31d85ff8e328046ab1b Mon Sep 17 00:00:00 2001
From: Bastien Guerry <bzg@altern.org>
Date: Wed, 25 Jan 2012 15:33:45 +0100
Subject: [PATCH] org.el: Make `org-metaright' indent drawers and blocks.

* org.el (org-at-drawer-p): Normalize the docstring to match
other `org-at-*-p' docstrings.
(org-indent-block, org-indent-drawer, org-at-block-p): New
functions.
(org-metaright): Use the new functions to indent a drawer or a
block depending on the context.  Also update the docstring.
---
 lisp/org.el |   55 ++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 files changed, 52 insertions(+), 3 deletions(-)

diff --git a/lisp/org.el b/lisp/org.el
index 61cef0a..689784d 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -17990,14 +17990,16 @@ See the individual commands for more information."
    (t (call-interactively 'backward-word))))
 
 (defun org-metaright (&optional arg)
-  "Demote subtree or move table column to right.
-Calls `org-do-demote' or `org-table-move-column', depending on context.
+  "Demote a subtree, a list item or move table column to right.
+In front of a drawer or a block keyword, indent it correctly.
 With no specific context, calls the Emacs default `forward-word'.
 See the individual commands for more information."
   (interactive "P")
   (cond
    ((run-hook-with-args-until-success 'org-metaright-hook))
    ((org-at-table-p) (call-interactively 'org-table-move-column))
+   ((org-at-drawer-p) (call-interactively 'org-indent-drawer))
+   ((org-at-block-p) (call-interactively 'org-indent-block))
    ((org-with-limited-levels
      (or (org-at-heading-p)
 	 (and (org-region-active-p)
@@ -20161,6 +20163,47 @@ If point is in an inline task, mark that task instead."
 		       t t))
     (org-move-to-column column)))
 
+(defun org-indent-drawer ()
+  "Indent the drawer at point."
+  (interactive)
+  (let ((p (point))
+	(e (and (save-excursion (re-search-forward ":END:" nil t))
+		(match-end 0)))
+	(folded
+	 (save-excursion
+	   (end-of-line)
+	   (when (overlays-at (point))
+	     (member 'invisible (overlay-properties
+				 (car (overlays-at (point)))))))))
+    (when folded (org-cycle))
+    (indent-for-tab-command)
+    (while (and (move-beginning-of-line 2) (< (point) e))
+	(indent-for-tab-command))
+    (goto-char p)
+    (when folded (org-cycle)))
+  (message "Drawer at point indented"))
+
+(defun org-indent-block ()
+  "Indent the block at point."
+  (interactive)
+  (let ((p (point))
+	(case-fold-search t)
+	(e (and (save-excursion (re-search-forward "#\\+end_?\\(?:[a-z]+\\)?" nil t))
+		(match-end 0)))
+	(folded
+	 (save-excursion
+	   (end-of-line)
+	   (when (overlays-at (point))
+	     (member 'invisible (overlay-properties
+				 (car (overlays-at (point)))))))))
+    (when folded (org-cycle))
+    (indent-for-tab-command)
+    (while (and (move-beginning-of-line 2) (< (point) e))
+	(indent-for-tab-command))
+    (goto-char p)
+    (when folded (org-cycle)))
+  (message "Block at point indented"))
+
 (defvar org-adaptive-fill-regexp-backup adaptive-fill-regexp
   "Variable to store copy of `adaptive-fill-regexp'.
 Since `adaptive-fill-regexp' is set to never match, we need to
@@ -20712,11 +20755,17 @@ This version does not only check the character property, but also
 (defalias 'org-on-heading-p 'org-at-heading-p)
 
 (defun org-at-drawer-p nil
-  "Whether point is at a drawer."
+  "Is cursor at a drawer keyword?"
   (save-excursion
     (move-beginning-of-line 1)
     (looking-at org-drawer-regexp)))
 
+(defun org-at-block-p nil
+  "Is cursor at a block keyword?"
+  (save-excursion
+    (move-beginning-of-line 1)
+    (looking-at org-block-regexp)))
+
 (defun org-point-at-end-of-empty-headline ()
   "If point is at the end of an empty headline, return t, else nil.
 If the heading only contains a TODO keyword, it is still still considered
-- 
1.7.8.4


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-- 
 Bastien

Re: Indenting source code blocks in lists

[Bastien]

Bastien <bzg@altern.org> writes:

> The attached patch let `org-metaright' indent a drawer or a block
> correctly.  It introduces two new function ̀org-indent-block' and 
> `org-indent-drawer' which derive from local hacks I'm using quite
> often now.  
>
> Perhaps ̀org-metaright' is not the best keybinding for this function,
> please suggest a better one.

I've tested this patch and just applied it.

Using M-<right> on a drawer keyword (like ":PROPERTIES:") will
indent the whole drawer.  org-metaright looks quite natural most
of the time, since the purpose is to realign the drawer with the
headline/paragraph above, and statistically (?) headlines are 
more often refiles to subsubtrees than to trees.

-- 
 Bastien

Re: Indenting source code blocks in lists

[Phil (Philip) Mason]

>  But let us assume that I already have a source block, and it is not
>  indented correctly; what is the easy way to indent this block in a list?

If you indent just the #+BEGIN_SRC line and then use C-c ' to open the source editor and C-c ' to close it again it indents all source to the level of the BEGIN_SRC line.

For example

     #+BEGIN_SRC emacs-lisp
(message (number-to-string
(- (point) 
10))
     #+END_SRC

Becomes

     #+BEGIN_SRC emacs-lisp
       (message (number-to-string
       (- (point) 
       10))
     #+END_SRC

Is that closer to what you wanted?

All the best

Phil

Re: Indenting source code blocks in lists

[Jambunathan K]

Jarmo Hurri <jarmo.hurri@syk.fi> writes:

> what is the easy way to indent this block

Mark the block as you would mark regularly. Then to 10 spaces you can do
this:

C-u 1 0 C-x TAB

To figure out the number of spaces to add, you mentally the subtract the
current column with the target column. Turn on M-x column-number-mode if
you need to to figure out what column you are on.

or 

Refer the last paragraph in:

(info "(emacs) Indentation Commands")

or 

Launch the info manual with:       C-h r                
Visit the needed index entry with: i indent-rigidly

--