Answer by Stephen for T1 font encoding, newtxtext, and microtype result in...
char29 is the fl ligature. This is missing in the small caps font (\textsc{...}). As long as neither \char29 not fl is used in small caps, there is nothing to worry about and the information from...
View ArticleT1 font encoding, newtxtext, and microtype result in “Package microtype Info:...
Feeding\documentclass{article}\usepackage[T1]{fontenc}\usepackage{newtxtext}\usepackage{microtype}\begin{document}\textsc{}% doesn't matter what text we enter here\end{document}to pdflatex...
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