X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=man%2Fcurs_clear.3x;h=9d2872a3dd57f4bef15d313431c9f5b6ef59841d;hp=8668feb8225d7e068444e5425ffc14f9585c51e7;hb=e5d1530ca229aef94a3c84ad33f8ae89f35c4045;hpb=17c5992a16be94247b83f2bbb9accdd9b7e7bb72

diff --git a/man/curs_clear.3x b/man/curs_clear.3x
index 8668feb8..9d2872a3 100644
--- a/man/curs_clear.3x
+++ b/man/curs_clear.3x
@@ -1,5 +1,6 @@
 .\"***************************************************************************
-.\" Copyright (c) 1998-2016,2018 Free Software Foundation, Inc.              *
+.\" Copyright 2018,2020 Thomas E. Dickey                                     *
+.\" Copyright 1998-2010,2016 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            *
@@ -26,10 +27,14 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
-.\" $Id: curs_clear.3x,v 1.16 2018/07/28 21:34:06 tom Exp $
+.\" $Id: curs_clear.3x,v 1.19 2020/10/03 21:43:37 tom Exp $
 .TH curs_clear 3X ""
 .na
 .hy 0
+.de bP
+.ie n  .IP \(bu 4
+.el    .IP \(bu 2
+..
 .SH NAME
 \fBerase\fR,
 \fBwerase\fR,
@@ -42,20 +47,20 @@
 .ad
 .hy
 .SH SYNOPSIS
-\fB# include <curses.h>\fR
+\fB#include <curses.h>\fR
 .sp
 \fBint erase(void);\fR
 .br
 \fBint werase(WINDOW *win);\fR
-.br
+.sp
 \fBint clear(void);\fR
 .br
 \fBint wclear(WINDOW *win);\fR
-.br
+.sp
 \fBint clrtobot(void);\fR
 .br
 \fBint wclrtobot(WINDOW *win);\fR
-.br
+.sp
 \fBint clrtoeol(void);\fR
 .br
 \fBint wclrtoeol(WINDOW *win);\fR
@@ -81,12 +86,14 @@ Blanks created by erasure have the current background rendition (as set
 by \fBwbkgdset\fR) merged into them.
 .SH RETURN VALUE
 All routines return the integer \fBOK\fR on success and \fBERR\fP on failure.
-The SVr4.0 manual says "or a
-non-negative integer if \fBimmedok\fR is set", but this appears to be an error.
 .PP
 X/Open defines no error conditions.
 In this implementation,
-functions using a window pointer parameter return an error if it is null.
+.bP
+functions using a window pointer parameter return an error if it is null
+.bP
+\fBwclrtoeol\fP returns an error
+if the cursor position is about to wrap.
 .SH NOTES
 Note that \fBerase\fR, \fBwerase\fR, \fBclear\fR, \fBwclear\fR,
 \fBclrtobot\fR, and \fBclrtoeol\fR may be macros.
@@ -96,6 +103,12 @@ The
 standard specifies that they return \fBERR\fR on failure, but specifies no
 error conditions.
 .PP
+The SVr4.0 manual says that these functions could
+return "a non-negative integer if \fBimmedok\fR is set",
+referring to the return-value of \fBwrefresh\fP.
+In that implementation, \fBwrefresh\fP would return a count of
+the number of characters written to the terminal.
+.PP
 Some historic curses implementations had, as an undocumented feature, the
 ability to do the equivalent of \fBclearok(..., 1)\fR by saying
 \fBtouchwin(stdscr)\fR or \fBclear(stdscr)\fR.