Aliocha Skrzypczak submitted an update to the
chemidentifier
package.
Version: 2.0.1 2026-09-20
License: lppl1.3c
Summary description: Synthesis-order numbering and hyperlinking of chemical
compounds
Announcement text:
------------------------------------------------------------------------
### Fixed
- `\chemidscheme` crashed with a raw Lua error
(`attempt to index a nil value`) when used before any `\chemidkey`
or `\chemidnote` had run earlier in the document. An unlabelled
scheme (a lone structure, a graphical abstract, a figure whose
labels are already typeset) is a legitimate use of `\chemidscheme`
and is now simply typeset verbatim. Fixed identically in
`chemidentifier-v2.sty` and the frozen `chemidentifier-v1.sty`.
- The text substitution performed by `\chemidscheme` was a plain,
unanchored substring replacement applied to *every* line of the
`.pdf_tex`, including the `\includegraphics` line. A motif that
happens to be a substring of the companion PDF's file name — easy to
trigger, since both are usually named after the compound — rewrote
the image path itself and broke the figure with an obscure
`\csname` error. The `\includegraphics` line is now left untouched,
and a new warning names the motif and the figure when this would
have happened, instead of failing silently downstream.
### Changed
- **`links` (version 2, `\chemidsetup`) now defaults to `false`
instead of `true`.** Compounds are typeset as plain numbers by
default; add `links=true` — as a package option
(`\usepackage[links=true]{chemidentifier}`) or via `\chemidsetup` —
to restore clickable links and anchors as before. This only affects
version 2 (`\usepackage[version=2]` or the default); version 1 has
no `links` key and is unaffected.
------------------------------------------------------------------------
The package’s Catalogue entry can be viewed at
https://ctan.org/pkg/chemidentifier
The package’s files themselves can be inspected at
https://mirrors.ctan.org/macros/latex/contrib/chemidentifier/
------------------------------------------------------------------------
Thanks for the upload.
For the CTAN Team
Petra Rübe-Pugliese
------------------------------------------------------------------------
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