crowbook/guide/misc.md

Tips and tricks

Using Crowbook with Emacs' markdown mode

If you use Emacs as a text editor, there is a nice Markdown mode to edit Markdown files.

It is possible to use Crowbook for HTML previewing in this mode, which requires only minimal configuration and tweaking:

(custom-set-variables
 '(markdown-command "crowbook - -qs  --to html --output -"))

You can then use markdown-preview (or C-c C-c p) to run Crowbook on this file and preview it in your browser, or run markdown-live-preview-mode to see a live preview (updated each time you save your file) in Emacs' integrated browser.

Some explanations if it looks a bit cryptic to you

We set markdown-command to crowbook, the reason for this is a bit obvious. The arguments we give to crowbook might be a bit less obvious:

• the fist argument, -, is actually the book file: it tells crowbook to read it from standard input.
• -qs or --quiet --single tells Crowbook that is a a standalone markdown file, and not a book configuration file, and to be a bit quiet on error/info messages;
• --to html specifies that HTML must be generated;
• --output - tells Crowbook to display the result on the stdout, even if you set output.html to some_file.html.

Embedding fonts in an EPUB file

In order to embed fonts in an EPUB file, you'll first have to edit the stylesheet, which you can first obtain with:

$ crowbook --print-template epub.css > my_epub_stylesheet.css

You'll need to use the @font-face attribute:

@font-face {
  font-family: MyFont;
  src: url(data/my_font.ttf);
}

Then you can add my_font.ttf to the files that need to be added to the EPUB zip file:

title: My Book
author: Me

cover: cover.png
output.epub: book.epub

resources.files: [my_font.ttf]

(Note that you'll have to repeat the process for the different font-weight and font-style variants of your font if you want it to display correctly when there is some text in bold, italics, or both.)