Org-Mode not exporting all child subheading

Question

While exporting following sample org file content to html, final output skips headings from 3rd depth in table of content.

After reading org documentation, and forum questions, I tried following, but still no luck in exporting all sub headings.

Changed org-imenu-depth to 4
Changed imenu-auto-rescan to a non-nil value
Chanaged imenu auto rescan maxout to 600000 as file size is 400 KB.

Sample:

* Head 1 shown
* Head 2 shown
** Head 2.1 shown
*** Head 2.3 not shown
* Head 3

Emacs version: GNU Emacs 26.1 (build 1, x86_64-w64-mingw32) of 2018-05-30

Org mode 9.1.9

What `emacs version`, what `org-version`, have you tried with `emacs -Q` and `M-x package-initialize`? — Tobias, Jun 13 '19 at 15:27
And I am running Emacs from its graphical version(on Windows) , and not console. — msinfo, Jun 13 '19 at 15:41
What is the value of `org-export-headline-levels`? Note, that `org-export` has (AFAIK) nothing to do with `imenu`. Pitingly, that means that all your attempts are pointless with respect to html export. You can start `emacs -Q` from within emacs. Just use `M-& emacs -Q`. This is just for testing. (So you do not need the `runemacs` stuff. Just ignore the additional Windows window.) After starting up Emacs run `M-x package-initialize` and afterwards do your tests. — Tobias, Jun 13 '19 at 15:50
Thanks @Tobias following worked. Changed org-export-headline-levels value to 5, removed #+OPTIONS: H:3 from top, and then restarted Emacs. Can you write down it in answer, so I can mark this as answered. — msinfo, Jun 13 '19 at 17:06
`imenu` option was mentioned in following questions https://emacs.stackexchange.com/questions/9533/speedbar-and-org-mode-only-shows-subheadings-but-not-3rd-level-subheadings and https://emacs.stackexchange.com/questions/20759/all-org-subheadings-in-imenu — msinfo, Jun 13 '19 at 17:13
Adding the `#+OPTIONS: H:5` line and then *reevaluating with C-c C-c on that line* should be enough. Alternatively, you could restart emacs instead of reevaluation but that is less desirable. The option does exactly the same thing as setting `org-export-headline-levels` except that it is specific to this file: setting the variable changes it for *every* file. — NickD, Jun 13 '19 at 17:22
@msinfo: those references to `imenu` (and `imenu` in general, as @Tobias points out) have nothing to do with HTML export — NickD, Jun 13 '19 at 17:26
True @NickD, it seems I was so focused on subheading word, that I missed its context in asked questions. Thanks for clarifying. — msinfo, Jun 13 '19 at 17:54

score 2 · Accepted Answer · answered Jun 14 '19 at 07:40

org-export-headline-levels is the option determining up to which level headlines are included in the table of contents of the exported document.

The standard value of org-export-headline-levels in Orgmode 9.1.9 is 3.

I tested your example org file with this standard setting and Head 2.3 was also included in the table of contents. That indicates that you have customized org-export-headline-levels to a lower value in your configuration.

You can easily increase the default value for org-export-headline-levels with M-x customize-option RET org-export-headline-levels RET.

All org documents will work with this default value if you do not set the value of org-export-headline-levels explicitly in the document.

You can set the value explicitly locally for one org document with a line like the following:

#+OPTIONS: H:5

Adapt the value 5 to your likings.

Equivalently you can set the option as file local variable:

Either use the following first line for the org file:
# -*- org-export-headline-levels: 5 -*-
or append the following section to your org file. It does not hurt since it is excluded from export.
```
* Local Variables :noexport:
Local Variables:
org-export-headline-levels: 5
End:
```

Org-Mode not exporting all child subheading

1 Answers1