.txt files: Source files.
.xhtml files: XHTML generated by command 'asciidoctor-epub3 -d book book.txt'
where 'book.txt' simply includes the chapters (.txt files) of the book.
*THIS WORKS*
Create destination for xref 'step-06-going-nuclear-delete-your-gmail-account
'.
*step-06-going-nuclear-delete-your-gmail-account.txt*
[[step-06-going-nuclear-delete-your-gmail-account,Step 6]]
= Step 6: Going nuclear--Delete your Gmail account!
...
*step-06-going-nuclear-delete-your-gmail-account.xhtml*
...
<section class="chapter" title="Step 6: Going nuclear—​Delete
your Gmail account!" epub:type="chapter"
id="step-06-going-nuclear-delete-your-gmail-account">
...
All the above makes sense and seems OK.
Next xref the above from another file.
*step-04-directing-email-away-from-your-gmail-account.txt*
...
OK, so you now have a new and friendlier email address. How do you direct
all the email you currently receive from others to that new address? For
future email recipients who you don't yet know this isn't a problem because
they will know only your new address. And, as we know, you may be using
your Gmail in other ways and want to replace it with your new address. The
strategy outlined here is one of gradually starving your Gmail account of
email and activity so that, over time, it withers and eventually dies on
the vine; only then can you kill it, see <<
step-06-going-nuclear-delete-your-gmail-account#step-06-going-nuclear-delete-your-gmail-account
>>.
...
*step-04-directing-email-away-from-your-gmail-account.xhtml*
...
<p>OK, so you now have a new and friendlier email address. How do you
direct all the email you currently receive from others to that new address?
For future email recipients who you don’t yet know this isn’t a
problem because they will know only your new address. And, as we know, you
may be using your Gmail in other ways and want to replace it with your new
address. The strategy outlined here is one of gradually starving your Gmail
account of email and activity so that, over time, it withers and eventually
dies on the vine; only then can you kill it, see <a
id="xref--step-06-going-nuclear-delete-your-gmail-account"
href="step-06-going-nuclear-delete-your-gmail-account.xhtml"
class="xref">Step 6: Going nuclear—​Delete your Gmail
account!</a>.</p>
...
All the above makes sense and seems OK.
Now, that was xref from one file to a different file.
*THIS DOESN'T WORK*
However, problems occur when we try to xref IN THE SAME FILE.
*how-email-works.txt*
[[how-email-works]]
= How email works
...
>From a conceptual point of view emails seems to go from your computer (or
mobile device) to another's, see <<how-email-works#HowEmailSeemsToWork>>.
...
[[HowEmailSeemsToWork,How email seems to work]]
.How email seems to work
image::{imagedir}/how-email-seems-to-work.png[How email seems to work]
...
*how-email-works.xhtml*
...
<p>From a conceptual point of view emails seems to go from your computer
(or mobile device) to another’s, see <a id="xref-HowEmailSeemsToWork"
href="#HowEmailSeemsToWork" class="xref">How email seems to work</a>.</p>
...
<figure class="image">
<div class="content">
<img src="../Images/how-email-seems-to-work.png" alt="How email seems to
work"/>
</div>
<figcaption>Figure 1. How email seems to work</figcaption>
</figure>
...
The problem here is that the image doesn't seem to get tagged with '
#HowEmailSeemsToWork', and so when I pass book.epub through epubcheck I get
this error:
ERROR(RSC-012): book.epub/OEBPS/how-email-works.xhtml(37,191): Fragment
identifier is not defined.
Somehow, I think the xhtml directly above and generated by asciidoctor-epub3
should look something like this:
...
<p>From a conceptual point of view emails seems to go from your computer
(or mobile device) to another’s, see <a id="xref-HowEmailSeemsToWork"
href="#HowEmailSeemsToWork" class="xref">How email seems to work</a>.</p>
...
<a name="HowEmailSeemsToWork"></a>
<figure class="image">
<div class="content">
<img src="../Images/how-email-seems-to-work.png" alt="How email seems to
work"/>
</div>
<figcaption>Figure 1. How email seems to work</figcaption>
</figure>
...
Asciidoctor fails to include <a name="HowEmailSeemsToWork"></a>?
Any ideas how to fix?
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