org: Editing source code
14.2 Editing source code
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Use ‘C-c '’ to edit the current code block. This brings up a language
major-mode edit buffer containing the body of the code block. Manually
saving this buffer with <C-x C-s> will write the contents back to the
Org buffer. You can also set ‘org-edit-src-auto-save-idle-delay’ to
save the base buffer after some idle delay, or
‘org-edit-src-turn-on-auto-save’ to auto-save this buffer into a
separate file using ‘auto-save-mode’. Use ‘C-c '’ again to exit.
The ‘org-src-mode’ minor mode will be active in the edit buffer. The
following variables can be used to configure the behavior of the edit
buffer. See also the customization group ‘org-edit-structure’ for
further configuration options.
‘org-src-lang-modes’
If an Emacs major-mode named ‘<lang>-mode’ exists, where ‘<lang>’
is the language named in the header line of the code block, then
the edit buffer will be placed in that major-mode. This variable
can be used to map arbitrary language names to existing major
modes.
‘org-src-window-setup’
Controls the way Emacs windows are rearranged when the edit buffer
is created.
‘org-src-preserve-indentation’
By default, the value is ‘nil’, which means that when code blocks
are evaluated during export or tangled, they are re-inserted into
the code block, which may replace sequences of spaces with tab
characters. When non-nil, whitespace in code blocks will be
preserved during export or tangling, exactly as it appears. This
variable is especially useful for tangling languages such as
Python, in which whitespace indentation in the output is critical.
‘org-src-ask-before-returning-to-edit-buffer’
By default, Org will ask before returning to an open edit buffer.
Set this variable to ‘nil’ to switch without asking.
To turn on native code fontification in the _Org_ buffer, configure
the variable ‘org-src-fontify-natively’.
Info Catalog
org: Structure of code blocks
org: Working With Source Code
org: Exporting code blocks