Rephrase sentence with 'IDENTs'

This seemed like a better fix than just changing to:
  \lstinline[language=grammar]!IDENT!s

chapters/syntax.tex

@@ -38,9 +38,9 @@ \section{Lexical conventions}\label{lexical-conventions}
 \end{lstlisting}
 \lstinline[language=grammar]!S-CHAR! is any member of the Unicode character set (\url{http://www.unicode.org}; see \cref{mapping-package-class-structures-to-a-hierarchical-file-system} for storing as UTF-8 on files) except double-quote `"', and backslash `\textbackslash{}'.
 
-For identifiers the redundant escapes (`\lstinline!\?!' and `\lstinline!\"!') are the same as the corresponding non-escaped
-variants (`\lstinline!?!' and '\lstinline!"!').  The single quotes are part of an identifier. E.g.\ \lstinline!'x'! and
-\lstinline!x! are different IDENTs.
+For identifiers the redundant escapes (`\lstinline!\?!' and `\lstinline!\"!') are the same as the corresponding non-escaped variants (`\lstinline!?!' and '\lstinline!"!').
+The single quotes are part of an identifier.
+For example, the identifiers \lstinline!'x'! and \lstinline!x! are different.
 
 Note:
 \begin{itemize}