ncurses 6.0 - patch 20161231

[ncurses.git] / doc / html / man / clear.1.html

diff --git a/doc/html/man/clear.1.html b/doc/html/man/clear.1.html
index 1af927041d0cf6febb20816fd7f4a1f039e25414..74b53fdc670bac6f876f7373d5664c4584df21ac 100644 (file)
--- a/doc/html/man/clear.1.html
+++ b/doc/html/man/clear.1.html
@@ -26,7 +26,7 @@
   * sale, use or other dealings in this Software without prior written       *
   * authorization.                                                           *
   ****************************************************************************
   * sale, use or other dealings in this Software without prior written       *
   * authorization.                                                           *
   ****************************************************************************

-  * @Id: clear.1,v 1.14 2016/11/19 21:30:46 tom Exp @
+  * @Id: clear.1,v 1.16 2016/12/31 16:09:34 tom Exp @

   * these would be fallbacks for DS/DE,
   * but groff changed the meaning of the macros.
 -->
   * these would be fallbacks for DS/DE,
   * but groff changed the meaning of the macros.
 -->


@@ -59,11 +59,19 @@
        <STRONG>clear</STRONG>  clears  your  screen if this is possible, including
        its scrollback buffer (if the extended "E3" capability  is
        defined).  <STRONG>clear</STRONG> looks in the environment for the terminal
        <STRONG>clear</STRONG>  clears  your  screen if this is possible, including
        its scrollback buffer (if the extended "E3" capability  is
        defined).  <STRONG>clear</STRONG> looks in the environment for the terminal

-       type and then in the <STRONG>terminfo</STRONG> database to determine how to
-       clear the screen.
+       type given by the environment variable <STRONG>TERM</STRONG>, and  then  in
+       the  <STRONG>terminfo</STRONG>  database  to  determine  how  to  clear the
+       screen.
+
+       <STRONG>clear</STRONG> writes to the standard output.  You can redirect the
+       standard output to a file (which prevents <STRONG>clear</STRONG> from actu-
+       ally clearing the screen), and later <STRONG>cat</STRONG> the file  to  the
+       screen, clearing it at that point.

 
        <STRONG>clear</STRONG>  ignores  any  command-line  parameters  that may be
 
        <STRONG>clear</STRONG>  ignores  any  command-line  parameters  that may be

-       present.
+       present.  The  analogous  "<STRONG>tput</STRONG>  clear"  has  command-line
+       parameters  including  <STRONG>-T</STRONG> for overriding the <STRONG>TERM</STRONG> environ-
+       ment variable.

 
 
 </PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>
 
 
 </PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>


@@ -73,13 +81,15 @@
        AT&amp;T  adapted a different BSD program (<STRONG>tset</STRONG>) to make a new
        command (<STRONG>tput</STRONG>), and used this to replace the <STRONG>clear</STRONG> command
        with a shell script which calls <STRONG>tput</STRONG> <STRONG>clear</STRONG>, e.g.,
        AT&amp;T  adapted a different BSD program (<STRONG>tset</STRONG>) to make a new
        command (<STRONG>tput</STRONG>), and used this to replace the <STRONG>clear</STRONG> command
        with a shell script which calls <STRONG>tput</STRONG> <STRONG>clear</STRONG>, e.g.,

-           /usr/bin/tput ${1:+-T$1} clear 2&gt; /dev/null
-           exit
+
+         /usr/bin/tput ${1:+-T$1} clear 2&gt; /dev/null
+         exit

 
        In 1989, when Keith Bostic revised the BSD <STRONG>tput</STRONG> command to
        make it similar to the AT&amp;T <STRONG>tput</STRONG>, he added a shell  script
        for the <STRONG>clear</STRONG> command:
 
        In 1989, when Keith Bostic revised the BSD <STRONG>tput</STRONG> command to
        make it similar to the AT&amp;T <STRONG>tput</STRONG>, he added a shell  script
        for the <STRONG>clear</STRONG> command:

-           exec tput clear
+
+         exec tput clear

 
        The  remainder  of  the script in each case is a copyright
        notice.
 
        The  remainder  of  the script in each case is a copyright
        notice.


@@ -93,10 +103,12 @@
            dard control sequence for clearing the screen.  Rather
            than  clearing  just  the  visible  part of the screen
            using
            dard control sequence for clearing the screen.  Rather
            than  clearing  just  the  visible  part of the screen
            using

-               printf '\033[2J'
+
+             printf '\033[2J'

 
            one could clear the <EM>scrollback</EM> using
 
            one could clear the <EM>scrollback</EM> using

-               printf '\033[<STRONG>3</STRONG>J'
+
+             printf '\033[<STRONG>3</STRONG>J'

 
            This is documented in <EM>XTerm</EM>  <EM>Control</EM>  <EM>Sequences</EM>  as  a
            feature originating with xterm.
 
            This is documented in <EM>XTerm</EM>  <EM>Control</EM>  <EM>Sequences</EM>  as  a
            feature originating with xterm.


@@ -135,7 +147,7 @@
 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
        <STRONG><A HREF="tput.1.html">tput(1)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>
 
 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
        <STRONG><A HREF="tput.1.html">tput(1)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>
 

-       This describes <STRONG>ncurses</STRONG> version 6.0 (patch 20161119).
+       This describes <STRONG>ncurses</STRONG> version 6.0 (patch 20161231).