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Answer by egreg for What's causing mysterious "Missing \endcsname inserted"...
Define an expandable string case changing function. Here\ExplSyntaxOn\NewExpandableDocumentCommand{\Titlecasestring}{m} { \str_uppercase:f { \str_head:e { #1 } } \str_tail:e { #1 }...
View ArticleWhat's causing mysterious "Missing \endcsname inserted" error that didn't...
I am running MacTeX 2022 with all updates applied. I have a large project that last built correctly on September 3, 2022. Today I get a mysterious Missing \endcsname inserted error on one particular...
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