Thanks, Bob. Commenting out that line in musixtex.tex worked. My apologies for not sending along a really minimal example (this was my first attempt at something like that).
And many thanks for taking the time to figure out a solution and for responding so quickly to my plea. I appreciate it very much, since I rely heavily on musixtex for producing musical examples, day in and day out. Cheers, Robert On 19 Jan 2021, at 8:14 PM, Bob Tennent <[email protected]<mailto:[email protected]>> wrote: |Did something inadvertent happen to \doublebar in the |most recent update? Some files that use that command were |working prior to the upgrade, but now that command is |throwing an error: Undefined control sequence. Hi. Thanks for the report and the example, which unfortunately was not very "minimal". But there is indeed a bug in musixtex.tex-131 which I think only manifests when using \doublebar in an "extract" in a latex file. I believe the fix is to comment out line 2314 in musixtex.tex; i.e., \let\doublebar\doublebar@II. Somehow that line appeared between 1.30 and 1.31 but I don't recall why. A simple workaround for you is to use \setdoublebar instead. Here is a more minimal example: \documentclass[10pt]{article} \usepackage{musixtex} \begin{document} \begin{music} \instrumentnumber{1}\setstaffs1{2}\setclef1{60}\generalmeter{\meterC}\nobarnumbers\generalsignature{2}% \startextract \NOtes\zwh a\wh c\nextstaff\zwh e\wh h\en \doublebar% %PROBLEMATIC! use \setdoublebar \endextract \end{music} \end{document} Bob T.
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