\input regression-test.tex
\documentclass{article}
\usepackage{osgstyler}
\usepackage{osgstyler-lua}

\NewDocumentCommand\ExistingCommand{m}{\TYPE{original=#1}}
\BindOsgInlineCommand{\ExistingCommand}{emphasis}
\BindOsgInlineCommand{\NewStyledCommand}{strong}
\UseOsgStandardInlineCommands

\ExplSyntaxOn
\cs_new_protected:Npn \__osgstyler_test_socket_semantics:nn #1#2
  { \TYPE{semantics=#1} #2 }
\cs_new_eq:NN \TestSocketSemantics \__osgstyler_test_socket_semantics:nn
\ExplSyntaxOff

\begin{document}
\SetOsgSemanticProcessor{\TestSocketSemantics}
\START
\ExistingCommand{first}
{\BindOsgInlineCommand{\ExistingCommand}{strong}\ExistingCommand{local}}
\ExistingCommand{again}
{\BindOsgInlineCommand{\ExistingCommand}{strong}\ExistingCommand{local-again}}
\NewStyledCommand{new}
\emph{emphasized}
\textbf{bold}
\uline{underlined}
\highlight{marked}
\fbox{framed}
\TYPE{defaults-before}
{\UseOsgDefaultInlineCommands
  \emph{original emphasis}\textbf{original bold}
  \uline{plain underline}\highlight{plain highlight}\fbox{plain frame}}
\TYPE{defaults-after}
\emph{bound-again}
\RestoreOsgInlineCommand{\ExistingCommand}
\ExistingCommand{restored}
\END
\end{document}