1. I am almost sure that Pandoc will just ignore unknown fields, at least that's what happened (unfortunately and to my disappointment) the last time I have tried to use non-standard fields in a style.

2. If you don't want to hardcode the transliteration into one of the existing fields, the easiest solution might be to use something along the lines of this script.

```

import json

import argparse

parser = argparse.ArgumentParser(description='Merge title and subtitle fields in CSL JSON with custom separator')

parser.add_argument('-f', '--from', action="store", dest="from_file")

parser.add_argument('-t', '--to', action="store", dest="to_file")

parser.add_argument('-s', '--separator', action="store", dest="separator", default=": ")

args = parser.parse_args()

# Load JSON File

with open(args.from_file, 'r') as from_file:

    references = json.load(from_file)

# Merge Title and Subtitle Fields

for reference in references:

    try:

        reference['title'] = reference['title'] + args.separator + reference['subtitle']

        reference.pop('subtitle', None)

    except:

        pass

# Write results back to File

with open(args.to_file, "w") as to_file:

    json.dump(references, to_file, indent=2,ensure_ascii=False)

```

This will merge title and subtitle fields, but you can of course adapt this to merge `title` and `title:transliteration`. (You'll need to you have your reference data available in CSL JSON.)

Best,

Denis

Am Freitag, 6. September 2019 21:49:16 UTC+2 schrieb BP:

Thanks everyone, especially Denis for the interesting information. Not what I had hoped for but kind of what I had expected. Usability with Pandoc→LaTeX is a must for me. I guess I could write my own code to locate references, look up the data, invoke something which produces a bibliography in HTML, then massage that HTML into something Pandoc will convert into LaTeX appropriately. Sounds like a lot of work though — although not as much as implementing a whole citation processor!

Another question is whether pandoc-citeproc will ignore unknown fields or throw an error? If the former I can have custom fields with the separate original and transliterated fields, as I need for my searching purposes and automatically update the combined version in the official fields. If the latter I'll need to produce a special version for Pandoc's consumption with the custom fields removed, which complicates things considerably.

Den ons 4 sep. 2019 09:33BPJ <mel...-Re5JQEeQqe8@public.gmane.orgm> skrev:

Does anyone know how to handle transliterated titles and names in
citations, when you want to include both the transliteration and the
original? Does CSL have any fields for that?

TIA,

/bpj

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