> Am 12.12.2025 um 20:06 schrieb Gerhard Gsänger via lyx-users
> <[email protected]>:
>
> Hi
> I’m using LyX2.4.4 on my Macbook M2 with Tahoe 26.1.
>
> Attached is a small LyX example, demonstration the issue.
>
> When I copy the following sentence from a website and paste it into a LyX
> documents the apostrophe (textquoteright) used in „doesn’t“ is causing an
> error when viewing the doc as PDF (LuaTex):
>
> CTAD doesn’t (currently) work with function parameters.
>
> The details are explained in the attached LyX file. The error happens only
> when this textquoteright is used inside a box containing the text plus a
> Listing box.
> What can I improve?
>
>
> Gerd
>
>
>
> <textquoteright.lyx>--
> lyx-users mailing list
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Update: I would like to add a better description, some assumptions regarding
cause und a proposed workaround.
Subject: LuaLaTeX crashes on typographic quotes inside boxes containing listings
Description:
In LyX 2.4.4, when a document contains boxes (e.g., Simple Frame) that include
both ordinary text with typographic quotation marks (‘ U+2018, ’ U+2019, “
U+201C, ” U+201D) and a listings environment, compiling with LuaLaTeX produces
errors such as:
Undefined control sequence.
doesn\T
1\textquoteright t ...
• The error does not occur in boxes that contain only text, nor
in normal paragraphs.
• LyX editor displays the typographic quotes correctly.
• PDF output may appear correct depending on font ligatures, but
LuaLaTeX fails during compilation when the listing is present in the same box
as typographic quotes.
Not a LyX-specific issue:
• A plain LaTeX file containing the same box + listing +
typographic quotes exhibits the exact same LuaLaTeX error.
• Compiling the same file with standard pdfLaTeX produces no
error.
• This confirms that the issue is due to LuaLaTeX’s handling of
Unicode typographic quotes in fragile environments, not LyX itself.
Cause:
• LuaLaTeX attempts to expand Unicode typographic quotes to LaTeX
commands (e.g., \textquoteright) inside fragile box/listing combinations, which
is not allowed, causing compilation errors.
Workarounds:
1. Replace typographic quotes with ASCII ' or " before pasting
into boxes.
2. Or, add the following macro to the LaTeX preamble to convert
all typographic quotes to ASCII at compile time:
\AtBeginDocument{%
\catcode`’=\active \protected\def’{'}%
\catcode`‘=\active \protected\def‘{'}%
\catcode`“=\active \protected\def“{"}%
\catcode`”=\active \protected\def”{"}%
}
• Ensures LuaLaTeX compiles successfully while retaining
typographic appearance in the PDF.
Steps to reproduce:
1. Create a LyX 2.4.4 document (or plain LaTeX file).
2. Insert a Simple Frame box (or minipage/tcolorbox).
3. Inside the box, add:
• A text string containing typographic quotes.
• A listings environment with code.
4. Compile using LuaLaTeX.
5. Observe the “Undefined control sequence” error related to
\textquoteright.
6. Compile with standard pdfLaTeX: no error occurs.
--
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