<!--
****************************************************************************
- * Copyright 2019-2022,2023 Thomas E. Dickey *
+ * Copyright 2019-2023,2024 Thomas E. Dickey *
* Copyright 2000-2016,2017 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************
- * @Id: curs_trace.3x,v 1.37 2023/09/23 20:53:33 tom Exp @
+ * @Id: curs_trace.3x,v 1.50 2024/04/20 21:24:19 tom Exp @
-->
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="generator" content="Manpage converted by man2html - see https://invisible-island.net/scripts/readme.html#others_scripts">
-<TITLE>curs_trace 3x 2023-09-23 ncurses 6.4 Library calls</TITLE>
+<TITLE>curs_trace 3x 2024-04-20 ncurses 6.5 Library calls</TITLE>
<link rel="author" href="mailto:bug-ncurses@gnu.org">
</HEAD>
<BODY>
-<H1 class="no-header">curs_trace 3x 2023-09-23 ncurses 6.4 Library calls</H1>
+<H1 class="no-header">curs_trace 3x 2024-04-20 ncurses 6.5 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG>
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
- <STRONG>unsigned</STRONG> <STRONG>curses_trace(const</STRONG> <STRONG>unsigned</STRONG> <EM>param</EM><STRONG>);</STRONG>
+ <STRONG>unsigned</STRONG> <STRONG>curses_trace(const</STRONG> <STRONG>unsigned</STRONG> <EM>trace-mask</EM><STRONG>);</STRONG>
<STRONG>void</STRONG> <STRONG>_tracef(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>format</EM><STRONG>,</STRONG> <STRONG>...);</STRONG>
<STRONG>char</STRONG> <STRONG>*_traceattr2(int</STRONG> <EM>buffer</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <EM>ch</EM><STRONG>);</STRONG>
<STRONG>char</STRONG> <STRONG>*_tracecchar_t(const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>string</EM><STRONG>);</STRONG>
<STRONG>char</STRONG> <STRONG>*_tracecchar_t2(int</STRONG> <EM>buffer</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>string</EM><STRONG>);</STRONG>
- <STRONG>char</STRONG> <STRONG>*_tracechar(int</STRONG> <EM>ch</EM><STRONG>);</STRONG>
+ <STRONG>char</STRONG> <STRONG>*_tracechar(int</STRONG> <EM>c</EM><STRONG>);</STRONG>
<STRONG>char</STRONG> <STRONG>*_tracechtype(chtype</STRONG> <EM>ch</EM><STRONG>);</STRONG>
<STRONG>char</STRONG> <STRONG>*_tracechtype2(int</STRONG> <EM>buffer</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <EM>ch</EM><STRONG>);</STRONG>
<STRONG>char</STRONG> <STRONG>*_nc_tracebits(void);</STRONG>
<STRONG>char</STRONG> <STRONG>*_tracemouse(const</STRONG> <STRONG>MEVENT</STRONG> <STRONG>*</STRONG><EM>event</EM><STRONG>);</STRONG>
- /* deprecated */
- <STRONG>void</STRONG> <STRONG>trace(const</STRONG> <STRONG>unsigned</STRONG> <STRONG>int</STRONG> <EM>param</EM><STRONG>);</STRONG>
+ <EM>/*</EM> <EM>deprecated</EM> <EM>*/</EM>
+ <STRONG>void</STRONG> <STRONG>trace(const</STRONG> <STRONG>unsigned</STRONG> <STRONG>int</STRONG> <EM>trace-mask</EM><STRONG>);</STRONG>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
- The <EM>curses</EM> <EM>trace</EM> routines are used for debugging the ncurses libraries,
- as well as applications which use the ncurses libraries. Some
+ The <EM>curses</EM> <EM>trace</EM> routines are used for debugging the <EM>ncurses</EM> libraries,
+ as well as applications which use the <EM>ncurses</EM> libraries. Some
limitations apply:
<STRONG>o</STRONG> Aside from <STRONG>curses_trace</STRONG>, the other functions are normally available
parameter updates the trace mask, and returns the previous trace
mask.
- When the trace mask is nonzero, ncurses creates the file "trace" in
+ When the trace mask is nonzero, <EM>ncurses</EM> creates the file "trace" in
the current directory for output. If the file already exists, no
tracing is done.
guideline.
-</PRE><H3><a name="h3-Initialization">Initialization</a></H3><PRE>
- These functions check the <STRONG>NCURSES_TRACE</STRONG> environment variable, to set
- the tracing feature as if <STRONG>curses_trace</STRONG> was called:
-
- filter, initscr, new_prescr, newterm, nofilter, restartterm,
- ripoffline, setupterm, slk_init, tgetent, use_env,
- use_extended_names, use_tioctl
-
-
</PRE><H3><a name="h3-Command-line-Utilities">Command-line Utilities</a></H3><PRE>
- The command-line utilities such as <STRONG><A HREF="tic.1m.html">tic(1)</A></STRONG> provide a verbose option
- which extends the set of messages written using the <STRONG>curses_trace</STRONG>
- function. Both of these (<STRONG>-v</STRONG> and <STRONG>curses_trace</STRONG>) use the same variable
+ The command-line utilities such as <STRONG><A HREF="tic.1m.html">tic(1)</A></STRONG> provide a verbose option
+ which extends the set of messages written using the <STRONG>curses_trace</STRONG>
+ function. Both of these (<STRONG>-v</STRONG> and <STRONG>curses_trace</STRONG>) use the same variable
(<STRONG>_nc_tracing</STRONG>), which determines the messages which are written.
- Because the command-line utilities may call initialization functions
+ Because the command-line utilities may call initialization functions
such as <STRONG>setupterm</STRONG>, <STRONG>tgetent</STRONG> or <STRONG>use_extended_names</STRONG>, some of their
- debugging output may be directed to the <EM>trace</EM> file if the <STRONG>NCURSES_TRACE</STRONG>
+ debugging output may be directed to the <EM>trace</EM> file if the <EM>NCURSES</EM><STRONG>_</STRONG><EM>TRACE</EM>
environment variable is set:
<STRONG>o</STRONG> messages produced in the utility are written to the standard error.
<STRONG>o</STRONG> messages produced by the underlying library are written to <EM>trace</EM>.
- If ncurses is built without tracing, none of the latter are produced,
+ If <EM>ncurses</EM> is built without tracing, none of the latter are produced,
and fewer diagnostics are provided by the command-line utilities.
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
- Routines which return a value are designed to be used as parameters to
+ Routines which return a value are designed to be used as parameters to
the <STRONG>_tracef</STRONG> routine.
+</PRE><H2><a name="h2-ENVIRONMENT">ENVIRONMENT</a></H2><PRE>
+
+</PRE><H3><a name="h3-NCURSES_TRACE">NCURSES_TRACE</a></H3><PRE>
+ A positive integral value stored in this variable causes the following
+ functions to enable the tracing feature as if <STRONG>curses_trace</STRONG> were called.
+
+ <STRONG>filter</STRONG>, <STRONG>initscr</STRONG>, <STRONG>new_prescr</STRONG>, <STRONG>newterm</STRONG>, <STRONG>nofilter</STRONG>, <STRONG>restartterm</STRONG>,
+ <STRONG>ripoffline</STRONG>, <STRONG>setupterm</STRONG>, <STRONG>slk_init</STRONG>, <STRONG>tgetent</STRONG>, <STRONG>use_env</STRONG>,
+ <STRONG>use_extended_names</STRONG>, <STRONG>use_tioctl</STRONG>
+
+
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
- These functions are not part of the XSI interface. Some other curses
- implementations are known to have similar features, but they are not
- compatible with ncurses:
+ These functions are not part of the X/Open Curses interface. Some
+ other curses implementations are known to have similar features, but
+ they are not compatible with <EM>ncurses</EM>:
<STRONG>o</STRONG> SVr4 provided <STRONG>traceon</STRONG> and <STRONG>traceoff</STRONG>, to control whether debugging
information was written to the "trace" file. While the functions
a debug-library is built.
PDCurses has a short description of these functions, with a note
- that they are not present in X/Open Curses, ncurses or NetBSD. It
+ that they are not present in X/Open Curses, <EM>ncurses</EM> or NetBSD. It
does not mention SVr4, but the functions' inclusion in a header
file section labeled "Quasi-standard" hints at the origin.
<STRONG>o</STRONG> NetBSD does not provide functions for enabling/disabling traces.
- It uses environment variables <STRONG>CURSES_TRACE_MASK</STRONG> and
- <STRONG>CURSES_TRACE_FILE</STRONG> to determine what is traced, and where the
+ It uses environment variables <EM>CURSES</EM><STRONG>_</STRONG><EM>TRACE</EM><STRONG>_</STRONG><EM>MASK</EM> and
+ <EM>CURSES</EM><STRONG>_</STRONG><EM>TRACE</EM><STRONG>_</STRONG><EM>FILE</EM> to determine what is traced, and where the
results are written. This is available only when a debug-library
is built.
The NetBSD tracing feature is undocumented.
- A few ncurses functions are not provided when symbol versioning is
+ A few <EM>ncurses</EM> functions are not provided when symbol versioning is
used:
_nc_tracebits, _tracedump, _tracemouse
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>.
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>
-ncurses 6.
4 2023-09-23 <STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG>
+ncurses 6.
5 2024-04-20 <STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
<ul>
<li><a href="#h3-Functions">Functions</a></li>
<li><a href="#h3-Trace-Parameter">Trace Parameter</a></li>
-<li><a href="#h3-Initialization">Initialization</a></li>
<li><a href="#h3-Command-line-Utilities">Command-line Utilities</a></li>
</ul>
</li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
+<li><a href="#h2-ENVIRONMENT">ENVIRONMENT</a>
+<ul>
+<li><a href="#h3-NCURSES_TRACE">NCURSES_TRACE</a></li>
+</ul>
+</li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
</ul>
projects / ncurses.git / blobdiff