ncurses 6.1 - patch 20180616

[ncurses.git] / man / curs_get_wstr.3x

diff --git a/man/curs_get_wstr.3x b/man/curs_get_wstr.3x
index 2a3fb3ce27bf19ce5f634f6324eca2f46b35aa9b..76c1d75d91e6283d7c29059b34a2b7ab76a7067a 100644 (file)
--- a/man/curs_get_wstr.3x
+++ b/man/curs_get_wstr.3x
@@ -1,5 +1,5 @@
 .\"***************************************************************************
 .\"***************************************************************************

-.\" Copyright (c) 2002-2010,2012 Free Software Foundation, Inc.              *
+.\" Copyright (c) 2002-2012,2017 Free Software Foundation, Inc.              *

 .\"                                                                          *
 .\" Permission is hereby granted, free of charge, to any person obtaining a  *
 .\" copy of this software and associated documentation files (the            *
 .\"                                                                          *
 .\" Permission is hereby granted, free of charge, to any person obtaining a  *
 .\" copy of this software and associated documentation files (the            *


@@ -26,7 +26,7 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"

-.\" $Id: curs_get_wstr.3x,v 1.9 2012/11/03 23:03:59 tom Exp $
+.\" $Id: curs_get_wstr.3x,v 1.12 2017/11/21 00:45:48 tom Exp $

 .TH curs_get_wstr 3X ""
 .na
 .hy 0
 .TH curs_get_wstr 3X ""
 .na
 .hy 0


@@ -66,7 +66,7 @@ The effect of
 \fBget_wstr\fR
 is as though a series of calls
 to
 \fBget_wstr\fR
 is as though a series of calls
 to

-\fBget_wch\fR
+\fBget_wch\fR(3X)

 were made, until a newline, other end-of-line, or end-of-file condition is processed.
 An end-of-file condition is represented by \fBWEOF\fR, as defined in \fB<wchar.h>\fR.
 The newline and end-of-line conditions are represented by the \fB\\n\fR \fBwchar_t\fR value.
 were made, until a newline, other end-of-line, or end-of-file condition is processed.
 An end-of-file condition is represented by \fBWEOF\fR, as defined in \fB<wchar.h>\fR.
 The newline and end-of-line conditions are represented by the \fB\\n\fR \fBwchar_t\fR value.


@@ -161,14 +161,24 @@ or if the window pointer is null.
 .SH PORTABILITY
 These functions are described in The Single Unix Specification, Version 2.
 No error conditions are defined.
 .SH PORTABILITY
 These functions are described in The Single Unix Specification, Version 2.
 No error conditions are defined.

-This implementation returns ERR if the window pointer is null,
-or if the lower-level \fBwget_wch\fR call returns an ERR.
+This implementation returns \fBERR\fP if the window pointer is null,
+or if the lower-level \fBwget_wch\fR call returns an \fBERR\fP.

 In the latter case,
 In the latter case,

-an ERR return without other data is treated as an end-of-file condition,
+an \fBERR\fP return without other data is treated as an end-of-file condition,

 and the returned array contains a \fBWEOF\fR followed by a null \fBwchar_t\fR.
 .PP
 and the returned array contains a \fBWEOF\fR followed by a null \fBwchar_t\fR.
 .PP

-X/Open curses documents these functions to pass an array of \fBwchar_t\fR,
-but all of the vendors implement this using \fBwint_t\fR.
+X/Open curses documented these functions to pass an array of \fBwchar_t\fR
+in 1997, but that was an error because of this part of the description:
+.RS
+.PP
+The effect of \fIget_wstr()\fP is as though a series of calls to
+\fIget_wch()\fP were made, until a newline character, end-of-line character, or
+end-of-file character is processed.
+.RE
+.PP
+The latter function \fIget_wch()\fP can return a negative value,
+while \fBwchar_t\fP is a unsigned type.
+All of the vendors implement this using \fBwint_t\fR, following the standard.

 .SH SEE ALSO
 Functions:
 \fBcurses\fR(3X),
 .SH SEE ALSO
 Functions:
 \fBcurses\fR(3X),