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P2319R5 Prevent path presentation problems #7995

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P2319R5 Prevent path presentation problems
AlisdairM Jun 23, 2025
c18e7a9
[depr.filesystems] Introduced section to group filesystems deprecations
AlisdairM Jun 23, 2025
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43 changes: 42 additions & 1 deletion source/future.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -762,7 +762,9 @@
Equivalent to: \tcode{return visit(std::forward<Visitor>(vis), arg.value);}
\end{itemdescr}

\rSec1[depr.fs.path.factory]{Deprecated filesystem path factory functions}
\rSec1[depr.filesystems]{Deprecated file systems}

\rSec2[depr.fs.path.factory]{Deprecated filesystem path factory functions}

\pnum
The header \libheaderrefx{filesystem}{fs.filesystem.syn} has the following additions:
Expand Down Expand Up @@ -841,6 +843,45 @@
\end{note}
\end{itemdescr}

\rSec2[depr.fs.path.obs]{Deprecated filesystem path format observers}

\indexlibraryglobal{path}%
\pnum
The following members are declared in addition to those members specified in
\iref{fs.path.member}:
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This should be \ref, not \iref, right?


\begin{codeblock}
namespace std::filesystem {
class path {
public:
std::string string() const;
std::string generic_string() const;
};
}
\end{codeblock}

\indexlibrarymember{string}{path}%
\begin{itemdecl}
std::string string() const;
\end{itemdecl}

\begin{itemdescr}
\pnum
\returns
\tcode{system_encoded_string()}.
\end{itemdescr}

\indexlibrarymember{generic_string}{path}%
\begin{itemdecl}
std::string generic_string() const;
\end{itemdecl}

\begin{itemdescr}
\pnum
\returns
\tcode{generic_system_encoded_string()}.
\end{itemdescr}

\rSec1[depr.atomics]{Deprecated atomic operations}

\rSec2[depr.atomics.general]{General}
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43 changes: 37 additions & 6 deletions source/iostreams.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -13707,7 +13707,8 @@
class Allocator = allocator<EcharT>>
basic_string<EcharT, traits, Allocator>
string(const Allocator& a = Allocator()) const;
std::string string() const;
std::string display_string() const;
std::string system_encoded_string() const;
std::wstring wstring() const;
std::u8string u8string() const;
std::u16string u16string() const;
Expand All @@ -13718,7 +13719,8 @@
class Allocator = allocator<EcharT>>
basic_string<EcharT, traits, Allocator>
generic_string(const Allocator& a = Allocator()) const;
std::string generic_string() const;
std::string generic_display_string() const;
std::string generic_system_encoded_string() const;
std::wstring generic_wstring() const;
std::u8string generic_u8string() const;
std::u16string generic_u16string() const;
Expand Down Expand Up @@ -14689,13 +14691,13 @@
\ref{fs.path.cvt}.
\end{itemdescr}

\indexlibrarymember{string}{path}%
\indexlibrarymember{system_encoded_string}{path}%
\indexlibrarymember{wstring}{path}%
\indexlibrarymember{u8string}{path}%
\indexlibrarymember{u16string}{path}%
\indexlibrarymember{u32string}{path}%
\begin{itemdecl}
std::string string() const;
std::string system_encoded_string() const;
std::wstring wstring() const;
std::u8string u8string() const;
std::u16string u16string() const;
Expand All @@ -14713,6 +14715,20 @@
by \ref{fs.path.cvt}.
\end{itemdescr}

\indexlibrarymember{display_string}{path}%
\begin{itemdecl}
std::string display_string() const;
\end{itemdecl}

\begin{itemdescr}
\pnum
\returns
\tcode{format("{}", *this)}.
\begin{note}
The returned string is suitable for use with formatting\iref{format.functions}
and print functions\iref{print.fun}.
\end{note}
\end{itemdescr}

\rSec4[fs.path.generic.obs]{Generic format observers}

Expand Down Expand Up @@ -14752,13 +14768,13 @@
\ref{fs.path.cvt}.
\end{itemdescr}

\indexlibrarymember{generic_string}{path}%
\indexlibrarymember{generic_system_encoded_string}{path}%
\indexlibrarymember{generic_wstring}{path}%
\indexlibrarymember{generic_u8string}{path}%
\indexlibrarymember{generic_u16string}{path}%
\indexlibrarymember{generic_u32string}{path}%
\begin{itemdecl}
std::string generic_string() const;
std::string generic_system_encoded_string() const;
std::wstring generic_wstring() const;
std::u8string generic_u8string() const;
std::u16string generic_u16string() const;
Expand All @@ -14775,6 +14791,21 @@
Conversion, if any, is specified by~\ref{fs.path.cvt}.
\end{itemdescr}

\indexlibrarymember{generic_display_string}{path}%
\begin{itemdecl}
std::string generic_display_string() const;
\end{itemdecl}

\begin{itemdescr}
\pnum
\returns
\tcode{format("{:g}", *this)}.
\begin{note}
The returned string is suitable for use with formatting\iref{format.functions}
and print functions\iref{print.fun}.
\end{note}
\end{itemdescr}

\rSec4[fs.path.compare]{Compare}

\indexlibrarymember{compare}{path}%
Expand Down
2 changes: 1 addition & 1 deletion source/support.tex
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Expand Up @@ -660,7 +660,7 @@
#define @\defnlibxname{cpp_lib_flat_set}@ 202207L // also in \libheader{flat_set}
#define @\defnlibxname{cpp_lib_format}@ 202311L // also in \libheader{format}
#define @\defnlibxname{cpp_lib_format_ranges}@ 202207L // also in \libheader{format}
#define @\defnlibxname{cpp_lib_format_path}@ 202403L // also in \libheader{filesystem}
#define @\defnlibxname{cpp_lib_format_path}@ 202506L // also in \libheader{filesystem}
#define @\defnlibxname{cpp_lib_format_uchar}@ 202311L // also in \libheader{format}
#define @\defnlibxname{cpp_lib_formatters}@ 202302L // also in \libheader{stacktrace}, \libheader{thread}
#define @\defnlibxname{cpp_lib_forward_like}@ 202207L // freestanding, also in \libheader{utility}
Expand Down