.\"***************************************************************************
-.\" Copyright (c) 1998-2017,2018 Free Software Foundation, Inc. *
+.\" Copyright 2018-2023,2024 Thomas E. Dickey *
+.\" Copyright 1998-2010,2017 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_insch.3x,v 1.15 2018/07/28 21:34:56 tom Exp $
-.TH curs_insch 3X ""
+.\" $Id: curs_insch.3x,v 1.40 2024/04/20 19:03:47 tom Exp $
+.TH curs_insch 3X 2024-04-20 "ncurses @NCURSES_MAJOR@.@NCURSES_MINOR@" "Library calls"
+.ie \n(.g \{\
+.ds `` \(lq
+.ds '' \(rq
+.\}
+.el \{\
+.ie t .ds `` ``
+.el .ds `` ""
+.ie t .ds '' ''
+.el .ds '' ""
+.\}
.SH NAME
-\fBinsch\fR,
-\fBwinsch\fR,
-\fBmvinsch\fR,
-\fBmvwinsch\fR \- insert a character before cursor in a \fBcurses\fR window
+\fB\%insch\fP,
+\fB\%winsch\fP,
+\fB\%mvinsch\fP,
+\fB\%mvwinsch\fP \-
+insert a \fIcurses\fP character in a window
.SH SYNOPSIS
-\fB#include <curses.h>\fR
-.sp
-\fBint insch(chtype ch);\fR
-.br
-\fBint winsch(WINDOW *win, chtype ch);\fR
-.br
-\fBint mvinsch(int y, int x, chtype ch);\fR
-.br
-\fBint mvwinsch(WINDOW *win, int y, int x, chtype ch);\fR
-.br
+.nf
+\fB#include <curses.h>\fP
+.PP
+\fBint insch(chtype \fIch\fP);
+\fBint winsch(WINDOW *\fIwin\fP, chtype \fIch\fP);
+\fBint mvinsch(int \fIy\fP, int \fIx\fP, chtype \fIch\fP);
+\fBint mvwinsch(WINDOW *\fIwin\fP, int \fIy\fP, int \fIx\fP, chtype \fIch\fP);
+.fi
.SH DESCRIPTION
-These routines insert the character \fIch\fR before the character under the
-cursor.
-All characters to the right of the cursor are moved one space to the
-right, with the possibility of the rightmost character on the line being lost.
-The insertion operation does not change the cursor position.
-.SH RETURN VALUE
-All routines that return an integer return \fBERR\fR upon failure and \fBOK\fP
-(SVr4 specifies only "an integer value other than \fBERR\fR")
-upon successful completion,
-unless otherwise noted in the preceding routine descriptions.
+These functions insert the
+.I curses
+character
+.I ch
+at the cursor in the specified window
+.I win
+(or
+.BR \%stdscr ).
+The character previously at the cursor and any to its right move one
+cell to the right;
+the rightmost character on the line is discarded.
+The cursor does not advance.
+.SH "RETURN VALUE"
+These functions return
+.B OK
+on success and
+.B ERR
+on failure.
+.PP
+Functions taking a
+.I \%WINDOW
+pointer argument fail if the pointer is
+.BR NULL .
.PP
-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.
+Functions prefixed with \*(``mv\*('' first perform cursor movement and
+fail if the position
+.RI ( y ,
+.IR x )
+is outside the window boundaries.
.SH NOTES
-These routines do not necessarily imply use of a hardware insert character
-feature.
+.BR \%insch ,
+.BR \%mvinsch ,
+and
+.B \%mvwinsch
+may be implemented as macros.
.PP
-Note that \fBinsch\fR, \fBmvinsch\fR, and \fBmvwinsch\fR may be macros.
+A terminal's
+.B \%insert_character
+.RB ( ich1 )
+capability
+is not necessarily employed.
.SH PORTABILITY
-These functions are described in the XSI Curses standard, Issue 4.
-.SH SEE ALSO
-\fBcurses\fR(3X).
+X/Open Curses,
+Issue 4 describes these functions.
+.PP
+SVr4
+.I curses
+describes a successful return value only as
+\*(``an integer value other than
+.BR ERR \*(''.
+.SH "SEE ALSO"
+\fB\%curs_ins_wch\fP(3X) describes comparable functions in the
+wide-character
+.I curses
+configuration.
.PP
-Comparable functions in the wide-character (ncursesw) library are
-described in
-\fBcurs_ins_wch\fR(3X).
+\fB\%curses\fP(3X),
+\fB\%terminfo\fP(5)
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