.\"***************************************************************************
-.\" Copyright (c) 1998-2010,2012 Free Software Foundation, Inc. *
+.\" Copyright 2019,2020 Thomas E. Dickey *
+.\" Copyright 1998-2012,2017 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 *
.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: curs_addstr.3x,v 1.17 2012/11/03 22:57:31 tom Exp $
+.\" $Id: curs_addstr.3x,v 1.23 2020/10/17 23:11:02 tom Exp $
.TH curs_addstr 3X ""
+.ie \n(.g .ds `` \(lq
+.el .ds `` ``
+.ie \n(.g .ds '' \(rq
+.el .ds '' ''
.de bP
-.IP \(bu 4
+.ie n .IP \(bu 4
+.el .IP \(bu 2
..
.na
.hy 0
\fBint waddstr(WINDOW *\fR\fIwin\fR\fB, const char *\fR\fIstr\fR\fB);\fR
.br
\fBint waddnstr(WINDOW *\fR\fIwin\fR\fB, const char *\fR\fIstr\fR\fB, int \fR\fIn\fR\fB);\fR
-.br
+.sp
\fBint mvaddstr(int \fR\fIy\fR\fB, int \fR\fIx\fR\fB, const char *\fR\fIstr\fR\fB);\fR
.br
\fBint mvaddnstr(int \fR\fIy\fR\fB, int \fR\fIx\fR\fB, const char *\fR\fIstr\fR\fB, int \fR\fIn\fR\fB);\fR
.SH DESCRIPTION
These functions write the (null-terminated) character string
\fIstr\fR on the given window.
-It is similar to calling \fBwaddch\fR once for each character in the string.
+It is similar to calling \fBwaddch\fR once for each byte in the string.
.PP
The \fImv\fR functions perform cursor movement once, before writing any
characters.
Thereafter, the cursor is advanced as a side-effect of writing to the window.
.PP
The four functions with \fIn\fR as the last argument
-write at most \fIn\fR characters,
+write at most \fIn\fR bytes,
or until a terminating null is reached.
If \fIn\fR is \-1, then the entire string will be added.
.SH RETURN VALUE
.bP
if the corresponding calls to \fBwaddch\fP return an error.
.PP
-Functions with a "mv" prefix first perform a cursor movement using
+Functions with a \*(``mv\*('' prefix first perform a cursor movement using
\fBwmove\fP, and return an error if the position is outside the window,
or if the window pointer is null.
+If an error is returned by the \fBwmove\fP,
+no characters are added to the window.
+.PP
+If an error is returned by \fBwaddch\fP
+(e.g.,
+because the window is not large enough,
+or an illegal byte sequence was detected)
+only part of the string may be added.
+Aside from that,
+there is a special case in \fBwaddch\fP where an error may be
+returned after successfully writing a character to the lower-right corner
+of a window when \fBscrollok\fP is disabled.
.SH NOTES
All of these functions except \fBwaddnstr\fR may be macros.
.SH PORTABILITY