Jekyll-citation doesn't work any longer

Hi,

I’m upgrade an old website version, and I don’t know if I’m missing something, but rendering bibtex entries using jekyll-citation is now broken:

  Liquid Exception: uninitialized constant Jekyll::BibtexBlock::IsTag in texts/writings.md
jekyll 3.6.2 | Error:  uninitialized constant Jekyll::BibtexBlock::IsTag

I have created a minimal file using really just the example from the project, to exclude problems with particular entries:

---
permalink: /texts/writings.html
# layout: pageplain
title: Writings
# tags: [about, Jekyll, theme, responsive]
modified: 2014-08-08T20:53:07.573882-04:00
comments: false
image:
#  feature: texture-feature-02.jpg
#  credit: Texture Lovers
#  creditlink: http://texturelovers.com
---

{% bibtex %}
@article{brothman1991orders,
  title={Orders of value: probing the theoretical terms of Archival Practice},
  author={Brothman, B.},
  journal={Archivaria},
  volume={32},
  number={1},
  year={1991}
}
{% endbibtex %}

My Gemfile has this:

source "https://rubygems.org"
gemspec
gem 'bibtex-ruby'
gem 'citeproc-ruby'
gem 'csl-styles'

I have no clue what’s broken. Thanks for help.

The plugin you’re referring to hasn’t been updated for years…

The IsTag in the error message above had been removed way back in 2014… See commit below:
https://github.com/Shopify/liquid/commit/3c2de7737d25d8a7ff877b8f9261ceb4d6a83ea9

Ok, I understand. Is anyone aware of a solution that still works? I tried jekyll-scholar, but it’s not the same API (for example, you cannot inline bibtex entries) and the rendering doesn’t look good IMO.

best, …h.h…