new `\textsuperscript` definition breaks bigfoot's color management
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- TeX
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Description
Using current TeXLive (commit 2103b15de04c8 from 2026-Jun-27), this document
\documentclass{article}
\usepackage{perpage}
\MakePerPage{footnote}
\usepackage{bigfoot}
\DeclareNewFootnote[para]{default}
\usepackage[colorlinks=true]{hyperref}
\begin{document}
foo\footnote{bar}
\end{document}
aborts with the following error.
! Undefined control sequence.
\set@color ...lt {\current@color }{\FN@colorstack
}}\marks \FN@color {\FN@co...
l.11 foo\footnote{bar}
A larger document of mine that uses both hyperref and bigfoot with the mentioned options worked fine with TeXLive 0308fcb0 (from 2026-May-09); this corresponds to hyperref v7.01q.
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by compiling the minimal TeX document with current TeXLive and the earlier hyperref v7.01q environment, focusing on the interaction between bigfoot, perpage, hyperref, and the new \textsuperscript definition. Trace the undefined control sequence in the reported \set@color path; done means the minimal document compiles without breaking bigfoot's color management.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- tex
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 58/100