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[Orgmode] Native TAB in code blocks [WAS Re: Org now fontifies code bloc


From: Dan Davison
Subject: [Orgmode] Native TAB in code blocks [WAS Re: Org now fontifies code blocks]
Date: Thu, 02 Sep 2010 12:06:38 -0700
User-agent: Gnus/5.110011 (No Gnus v0.11) Emacs/24.0.50 (gnu/linux)

Erik Iverson <address@hidden> writes:

> Dan,
>
> Thank you to David and yourself for this great feature.  I have
> absolutely no opinion about the default on/off, except to say it
> looks great on.
>
> Is your TAB key patch[1] in master yet?
> http://www.mail-archive.com/address@hidden/msg28640.html

Hi Erik,

Since these[1] changes, language-native TAB can be achieved in code
blocks via C-c C-v C-x TAB and C-c C-v x TAB. We can add this to
org-tab-first-hook, controlled by a variable `org-src-tab-acts-natively'
as below. Carsten -- would you like to add this to Org, or leave it as a
user customisation?

Dan


--8<---------------cut here---------------start------------->8---
diff --git a/lisp/org-src.el b/lisp/org-src.el
index 6c09cbd..d1948cc 100644
--- a/lisp/org-src.el
+++ b/lisp/org-src.el
@@ -715,6 +715,19 @@ Org-babel commands."
      (call-interactively
       (lookup-key org-babel-map key)))))
 
+(defvar org-src-tab-acts-natively nil
+  "If non-nil, the effect of TAB in a code block is as if it were
+issued in the language major mode buffer.")
+
+(defun org-src-native-tab-command-maybe ()
+  "Perform language-specific TAB action.
+Alter code block according to effect of TAB in the language major
+mode."
+  (and org-src-tab-acts-natively
+       (org-babel-do-key-sequence-in-edit-buffer (kbd "TAB"))))
+
+(add-hook 'org-tab-first-hook 'org-src-native-tab-command-maybe)
+
 (defun org-src-font-lock-fontify-block (lang start end)
   "Fontify code block.
 This function is called by emacs automatic fontification, as long
--8<---------------cut here---------------end--------------->8---


Footnotes:

[1] http://thread.gmane.org/gmane.emacs.orgmode/28950

>
>
>
> Dan Davison wrote:
>> I've just pushed changes which mean that Org now fontifies code in code
>> blocks. Currently, this is turned on by default, so it would be helpful
>> if people could report any problems, and opinions as to whether it
>> should be on or off by default.
>>
>> To turn it off, use
>>
>> (setq org-src-fontify-natively nil)
>>
>> With it off, there are two functions for manually fontifying code
>> blocks: `org-src-fontify-block' and `org-src-fontify-buffer'.
>>
>> With it on, on my netbook, there is a slight delay when typing in code
>> blocks of over 100 lines in length, and this is pronounced in code
>> blocks of several hundred lines.
>>
>> Just to be clear, this is fontification only -- no other language major
>> mode features -- so the default method of editing code is still C-c '
>> (org-edit-src-code).
>>
>> Thanks to David O'Toole for the original patch. The final version of the
>> patch is based on Carsten's suggestions for a more efficient
>> implementation.
>>
>> Dan
>>
>>
>> Dan Davison <address@hidden> writes:
>>
>>> Dan Davison <address@hidden> writes:
>>>
>>>> "David O'Toole" <address@hidden> writes:
>>>>
>>>>> I've got a preliminary patch that adds optional "native" fontification
>>>>> for source blocks. It uses the block's declared mode to fontify the
>>>>> block text. So now blocks look the way they should, and this opens the
>>>>> way to further enhancements.
>>>> Hi David,
>>>>
>>>> This is great! Here's a patch which allows the src blocks to have
>>>> switches and header args, and also uses `org-src-lang-modes' to find the
>>>> major mode. 
>>> I'm resending this as a match against the current master branch, and as
>>> an attachment so that it goes into the patchwork system. I am keeping
>>> this line of patches in branch `src-block-fontification' at
>>> git://github.com/dandavison/org-devel.git
>>>
>>> Dan
>>>
>>>
>>> _______________________________________________
>>> Emacs-orgmode mailing list
>>> Please use `Reply All' to send replies to the list.
>>> address@hidden
>>> http://lists.gnu.org/mailman/listinfo/emacs-orgmode
>>
>>
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