How to auto-renumber chapters

How to auto-renumber chapters

[Sharon Kimble]

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I'm writing a fiction book, and have just added several chapters from a previous draft to it.

As a result I now have

** Chapter 2
blah     

** Chapter 2
blah de blah

** Chapter 3
more blahing

How can I get these new chapters to autorenumber themselves please, so that they will show Chapter 2, Chapter 3 and Chapter 4?        

Thanks
  Sharon.
- -- 
Debian 12.6, Fluxbox 1.3.7, emacs 31.0.50, org 9.7.10 
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Re: How to auto-renumber chapters

[András Simonyi]

Dear All,

On Wed, 28 Aug 2024 at 10:41, Sharon Kimble
<boudiccas@skimble09.plus.com> wrote:

> I now have
> ** Chapter 2
> blah
> ** Chapter 2
> blah de blah
> How can I get these new chapters to autorenumber themselves please, so that they will show Chapter 2, Chapter 3

one way of doing the required renumbering would be performing a
regular expression-based replacement (using the replace-regexp or
query-replace-regexp commands) along the following lines:

regular expression: ^** Chapter \([0-9]+\)
replacement: ** Chapter \,(+ \# 1)

This assumes that the headings to be renumbered have the form "**
Chapter ##.." and the numbering should start with 1 so might need to
be adapted slightly to your use case.

best wishes,
András

> Thanks
>   Sharon.
> - --
> Debian 12.6, Fluxbox 1.3.7, emacs 31.0.50, org 9.7.10
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Re: How to auto-renumber chapters

[Gregor Zattler]

Hi Sharon,
* Sharon Kimble <boudiccas@skimble09.plus.com> [2024-08-28; 09:41 +01]:
> I'm writing a fiction book, and have just added several chapters from a previous draft to it.
>
> As a result I now have
>
> ** Chapter 2
> blah     
>
> ** Chapter 2
> blah de blah
>
> ** Chapter 3
> more blahing
>
> How can I get these new chapters to autorenumber themselves please, so that they will show Chapter 2, Chapter 3 and Chapter 4?        

András' solution shows emacs' greatness.

But it might be easier to get rid of
numbers in the /text/ of headings and
instead do M-x org-num-mode, which
dynamically shows heading numbers like

1. Heading
2. Heading
   1.1 Heading

...

with default settings.  There plenty of
possibilities for configuration, see
(info "(org)Dynamic Headline Numbering")
[evaluate after the last closing parenthesis]
or the commentary section of org-num.el


Ciao; Gregor 

Re: How to auto-renumber chapters

[Ihor Radchenko]

Sharon Kimble <boudiccas@skimble09.plus.com> writes:

> I'm writing a fiction book, and have just added several chapters from a previous draft to it.
>
> As a result I now have
>
> ** Chapter 2
> blah     
>
> ** Chapter 2
> blah de blah
>
> ** Chapter 3
> more blahing
>
> How can I get these new chapters to autorenumber themselves please, so that they will show Chapter 2, Chapter 3 and Chapter 4?        

Yet another solution, in addition to what was provided in other replies,
is using macros. When you have

** Chapter {{{n}}}
...
** Chapter {{{n}}}
...

{{{n}}} will be automatically replaced with a counter, but only on
export. See https://orgmode.org/manual/Macro-Replacement.html#index-n_002c-macro

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>