Zenodo Hardcover ISBN can't be gathered from \ISBNhardcover

[kopeckyf]

zenodo.py seems to depend on this format:

\renewcommand{\lsISBNhardcover}{978-3-.....}

This could become an issue since we use the command \ISBNhardcover[]{} since commit langsci/langscibook@48e29e5 in order to accommodate EAN+2 ISBN addons.

zenodo.py does not recognise ISBNs from \ISBNhardcover[]{} and results in an error.

[Glottotopia]

For Zenodo, the main functionality is to point to the digital ISBN, since this is, well, digital.
The hardcover ISBN is also related, true, but I cannot see any practical use for that.
The fact that we fail to retrieve and hence fail to link the hardcover ISBN will probably have zero consequences.

[kopeckyf]

My bug report was not very clear.

langscibook.cls defines \ISBNdigital, \ISBNhardcover, etc.:

https://github.com/langsci/langscibook/blob/bcd22af301323f44c47a57deac2a3ae40f3e5f5e/langscibook.cls#L82

When these are used in a localmetadata.tex to configure the ISBNs of the book, registerzenodo.py does not work, because it seems to be looking for \renewcommand{\lsISBNhardcover}, which is a different way of inputting the ISBN. The error message is this:

Traceback (most recent call last):
  File "/home/felix/Github/280/registerzenodo.py", line 30, in <module>
    book = zenodo.Book(extracommunities=extracommunities)
  File "/home/felix/Github/pypi/langsci/langsci/zenodo.py", line 73, in __init__
    self.getBookMetadata()
  File "/home/felix/Github/pypi/langsci/langsci/zenodo.py", line 112, in getBookMetadata
    self.digitalisbn = ISBNP.search(localmetadata).group(1)
AttributeError: 'NoneType' object has no attribute 'group'

The issue is that sometimes you want to input the ISBN via the user-level command \ISBNhardcover instead of going through \renewcommand{\lsISBNhardcover}. One example where this happens is when you want to functionalities of \ISBNhardcover such as giving the EAN+2 as optional arguments.

So it would be good if registerzenodo.py could scan for either the user-level command or the \renewcommand way of providing ISBNs.