Unwanted page breaks before headings level 2

[RobertDDL]

I am using Calibre’s ebook-convert to convert htm files to epub:

ebook-convert xyz.htm xyz.epub --epub-inline-toc --level1-toc //h:h1 --level2-toc //h:h2 --page-breaks-before //h:h1 --language en

The htm files have <h1>…</h1> and <h2>…</h2> chapter headings. It works perfectly well, with page breaks before <h1> headings, unless <h2> chapter titles begin with the words "Chapter" or "Book" — then I get unwanted page breaks before the level 2 headings. Is there a way to avoid this?

[Sarmat89]

You will get page breaks if the text is split between the files.

[RobertDDL]

Originally Posted by Sarmat89

You will get page breaks if the text is split between the files.

Thank you, yes, I understand that, but how do I keep Calibre from splitting the text into separate files whenever it sees a heading level 2 starting with the word "Chapter"?

It might work to change "Chapter" to "Chupter" in the text, convert it to epub, unzip it, edit Chupter back to Chapter in the files that contain the text, and zip it again — but, that's a bit cumbersome and ridiculous, and I hope there is a simpler way?

[kovidgoyal]

Look in the structure detection section of the conversion dialog

[RobertDDL]

Originally Posted by kovidgoyal

Look in the structure detection section of the conversion dialog

Sorry, what should I look for, and how is this going to help?

<h2>1. Some Title</h2>
does not result in a page break, while

<h2>Chapter 1. Some Title</h2>
does.

How can I have level 2 chapter titles begin with "Chapter", without triggering a page break?

[kovidgoyal]

Change the detect chapters expression to / or change the chapter mark to none.

[RobertDDL]

Originally Posted by kovidgoyal

Change the detect chapters expression to / or change the chapter mark to none.

Thank you. Sorry for asking this question, but I could not find the answer in the documentation - how do I do this?

The syntax I'm using is:
ebook-convert xyz.htm xyz.epub --epub-inline-toc --level1-toc //h:h1 --level2-toc //h:h2 --page-breaks-before //h:h1 --language en

[kovidgoyal]

ebook-convert a.epub b.epub --help | grep chapter

[RobertDDL]

--chapter=/

Thank you, that was what I needed, now it works the way I want it!