Fix overfull hboxes.

Author: zygoloid

source/iostreams.tex

@@ -12832,10 +12832,12 @@
 \begin{itemdescr}
 \pnum
 \postconditions
-\tcode{code() == ec},
-\tcode{path1().empty() == true},
-\tcode{path2().empty() == true}, and
-\tcode{string_view(what()).find(what_arg)} \tcode{!= string_view::npos}.
+\begin{itemize}
+\item \tcode{code() == ec},
+\item \tcode{path1().empty() == true},
+\item \tcode{path2().empty() == true}, and
+\item \tcode{string_view(what()).find(what_arg)} \tcode{!= string_view::npos}.
+\end{itemize}
 \end{itemdescr}
 
 \indexlibrary{\idxcode{filesystem_error}!constructor}%
@@ -12846,10 +12848,12 @@
 \begin{itemdescr}
 \pnum
 \postconditions
-\tcode{code() == ec},
-\tcode{path1()} returns a reference to the stored copy of \tcode{p1},
-\tcode{path2().empty() == true}, and
-\tcode{string_view(what()).find(what_arg)} \tcode{!= string_view::npos}.
+\begin{itemize}
+\item \tcode{code() == ec},
+\item \tcode{path1()} returns a reference to the stored copy of \tcode{p1},
+\item \tcode{path2().empty() == true}, and
+\item \tcode{string_view(what()).find(what_arg)} \tcode{!= string_view::npos}.
+\end{itemize}
 \end{itemdescr}
 
 \indexlibrary{\idxcode{filesystem_error}!constructor}%
@@ -12860,10 +12864,12 @@
 \begin{itemdescr}
 \pnum
 \postconditions
-\tcode{code() == ec},
-\tcode{path1()} returns a reference to the stored copy of \tcode{p1},
-\tcode{path2()} returns a reference to the stored copy of \tcode{p2}, and
-\tcode{string_view(what()).find(what_arg)} \tcode{!= string_view::npos}.
+\begin{itemize}
+\item \tcode{code() == ec},
+\item \tcode{path1()} returns a reference to the stored copy of \tcode{p1},
+\item \tcode{path2()} returns a reference to the stored copy of \tcode{p2}, and
+\item \tcode{string_view(what()).find(what_arg)} \tcode{!= string_view::npos}.
+\end{itemize}
 \end{itemdescr}
 
 \indexlibrarymember{path1}{filesystem_error}%
@@ -14478,7 +14484,8 @@
 \item Then, iterate over the files in \tcode{from}, as if by
 \begin{codeblock}
 for (const directory_entry& x : directory_iterator(from))
-  copy(x.path(), to/x.path().filename(), options | copy_options::@\placeholder{in-recursive-copy}@);
+  copy(x.path(), to/x.path().filename(),
+       options | copy_options::@\placeholder{in-recursive-copy}@);
 \end{codeblock}
   where \tcode{\placeholder{in-recursive-copy}}
   is a bitmask element of \tcode{copy_options}