Re: "LaTeX3 Error: Command '\textsi' not yet defined!"

Sun, 16 Feb 2020 08:50:03 -0800 

Before (June 2019, via MacOS Time Machine):
LyX 2.3.2
TexLive 1.35
MacOS Mojave (10.14.x)

Now
Lyx 2.3.4.2
TexLive 1.36
MacOS Catalina (10.15.3)

Minimal Working Example:
without embrac package:

Attachment: newfile3.lyx
Description: newfile3.lyx

with embrac package: 

Attachment: newfile3 produces error.lyx
Description: newfile3 produces error.lyx


Without embrac, the file compiles successfully, but does display "L3 Programming Layer <date>" while compiling (as does every Lyx file at the moment).

Hope this gives you what you need to help, and many thanks in advance.  

-David



On Feb 15, 2020, at 11:24 PM, Joel Kulesza <jkule...@gmail.com> wrote:

On Sat, Feb 15, 2020 at 3:53 PM David Pesetsky <pese...@mit.edu> wrote:
I was using Lyx for Mac rather extensively to write a long-ish manuscript about a year ago, but have been away from it for a while.

In the interval, a problem has arisen, though nothing has changed in my setup besides updating Lyx and Latex via TexLive.  I install the embrac package, which ensures non-italic brackets in otherwise italicized environments.  This used to work without a problem, but now generates the error message:

LaTeX3 Error: Command '\textsi' not yet defined!

I am sure of my trouble-shooting, since commenting out the usepackage command eliminates the error.  

When I was using Lyx a year ago, I wasn't seeing any mentions of LaTex3, I'm fairly sure (and no errors from embrac).  Any idea what's going wrong and how I can eliminate the problem or work around it?

David,

Additional details will be useful to folks if they wish to help.  For example, what versions of LyX and TeXLive were being used "before" and "after"?  What version of macOS were you using before and after?  Perhaps most important: please provide a minimal working example (MWE) [https://wiki.lyx.org/FAQ/MinimalExample] that demonstrates the problem now (and, ideally, that used to work before).

Regards,
Joel

-- 
David Pesetsky [pese...@mit.edu]
Department of Linguistics and Philosophy
32-D862 Massachusetts Institute of Technology
77 Massachusetts Avenue
Cambridge, MA 02139 USA
(617) 253-0957 office           (617) 253-5017 fax 
http://web.mit.edu/linguistics/www/pesetsky.home.html

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