Update bluebook-law-review.csl

[danepps]

Problem

In subsequent position, short cites with a pincite render as:

Smith, supra note 7 at 12

Standard Bluebook short-form practice puts a comma between the
"supra note N" reference and the "at X" pincite:

Smith, supra note 7, at 12

Cause

The <group delimiter=" "> in the subsequent/else branch (lines
362–367) joins first-reference-note-number and at_page with a single
space, producing "note 7 at 12" rather than "note 7, at 12".

Fix

Wrap first-reference-note-number and the at_page macro in an inner
<group delimiter=", "> so the comma is inserted only when the pincite
is present.

Scope

• Only affects subsequent cites that include a locator. When no locator
  is present, at_page renders empty, the inner group is suppressed, and
  output is unchanged ("Smith, supra note 7").
• No schema impact; pure structural change.
• No new variables consumed; no item-type behavior changes.

[github-actions]

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[github-actions]

😃 Your submission passed all our automated tests.

Below are some sample citations generated based on your proposed changes:

bluebook-law-review.csl (modified style; unchanged output for sample items)

CSL Search by Example, Citation style editor (2012), https://editor.citationstyles.org/searchByExample/; Martin Fenner et al., A Data Citation Roadmap for Scholarly Data Repositories, 6 Sci. Data (2019), https://www.nature.com/articles/s41597-019-0031-8.
Tania Galindo-Castañeda et al., Locating the Microbes along the Maize Root System under Nitrogen Limitation: a Root Phenotypic Approach, 136 Ann. Bot. 1143 (2025), https://academic.oup.com/aob/article/136/5-6/1143/8231684; Beyond Varieties of Capitalism: Conflict, Contradictions, and Complementarities in the European Economy (Bob Hancké, Martin Rhodes, & Mark Thatcher eds., 2007), https://academic.oup.com/book/5397.
Isabela Mares, Firms and the Welfare State: When, Why, and How Does Social Policy Matter to Employers?, in Varieties of capitalism: the institutional foundations of comparative advantage 184 (Peter A. Hall & David Soskice eds., 2001), https://academic.oup.com/book/301/chapter/134896619.