- insert a backslash character (``\'') before any exclama-
- tion marks (``!'').
-
-
-</PRE>
-<H2>HISTORY</H2><PRE>
- The <STRONG>tset</STRONG> command appeared in BSD 3.0. The <STRONG>ncurses</STRONG> imple-
- mentation was lightly adapted from the 4.4BSD sources for
- a terminfo environment by Eric S. Raymond <esr@snark.thyr-
- sus.com>.
-
-
-</PRE>
-<H2>COMPATIBILITY</H2><PRE>
- The <STRONG>tset</STRONG> utility has been provided for backward-compati-
- bility with BSD environments (under most modern UNIXes,
- <STRONG>/etc/inittab</STRONG> and <STRONG><A HREF="getty.1.html">getty(1)</A></STRONG> can set <STRONG>TERM</STRONG> appropriately for
- each dial-up line; this obviates what was <STRONG>tset</STRONG>'s most
- important use). This implementation behaves like 4.4BSD
- tset, with a few exceptions specified here.
-
- The <STRONG>-S</STRONG> option of BSD tset no longer works; it prints an
- error message to stderr and dies. The <STRONG>-s</STRONG> option only sets
- <STRONG>TERM</STRONG>, not <STRONG>TERMCAP</STRONG>. Both these changes are because the
- <STRONG>TERMCAP</STRONG> variable is no longer supported under terminfo-
- based <STRONG>ncurses</STRONG>, which makes <STRONG>tset</STRONG> <STRONG>-S</STRONG> useless (we made it die
- noisily rather than silently induce lossage).
-
- There was an undocumented 4.4BSD feature that invoking
- tset via a link named `TSET` (or via any other name begin-
- ning with an upper-case letter) set the terminal to use
+ insert a backslash character ("\") before any exclamation
+ marks ("!").
+
+
+</PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>
+ A <STRONG>reset</STRONG> command appeared in 2BSD (April 1979), written by
+ Kurt Shoens. This program set the <EM>erase</EM> and <EM>kill</EM> charac-
+ ters to <STRONG>^H</STRONG> (backspace) and <STRONG>@</STRONG> respectively. Mark Horton
+ improved that in 3BSD (October 1979), adding <EM>intr</EM>, <EM>quit</EM>,
+ <EM>start</EM>/<EM>stop</EM> and <EM>eof</EM> characters as well as changing the pro-
+ gram to avoid modifying any user settings.
+
+ Later in 4.1BSD (December 1980), Mark Horton added a call
+ to the <STRONG>tset</STRONG> program using the <STRONG>-I</STRONG> and <STRONG>-Q</STRONG> options, i.e.,
+ using that to improve the terminal modes. With those
+ options, that version of <STRONG>reset</STRONG> did not use the termcap
+ database.
+
+ A separate <STRONG>tset</STRONG> command was provided in 2BSD by Eric All-
+ man. While the oldest published source (from 1979) pro-
+ vides both <STRONG>tset</STRONG> and <STRONG>reset</STRONG>, Allman's comments in the 2BSD
+ source code indicate that he began work in October 1977,
+ continuing development over the next few years.
+
+ In September 1980, Eric Allman modified <STRONG>tset</STRONG>, adding the
+ code from the existing "reset" feature when <STRONG>tset</STRONG> was
+ invoked as <STRONG>reset</STRONG>. Rather than simply copying the existing
+ program, in this merged version, <STRONG>tset</STRONG> used the termcap
+ database to do additional (re)initialization of the termi-
+ nal. This version appeared in 4.1cBSD, late in 1982.
+
+ Other developers (e.g., Keith Bostic and Jim Bloom) con-
+ tinued to modify <STRONG>tset</STRONG> until 4.4BSD was released in 1993.
+
+ The <STRONG>ncurses</STRONG> implementation was lightly adapted from the
+ 4.4BSD sources for a terminfo environment by Eric S. Ray-
+ mond <esr@snark.thyrsus.com>.
+
+
+</PRE><H2><a name="h2-COMPATIBILITY">COMPATIBILITY</a></H2><PRE>
+ Neither IEEE Std 1003.1/The Open Group Base Specifications
+ Issue 7 (POSIX.1-2008) nor X/Open Curses Issue 7 documents
+ <STRONG>tset</STRONG> or <STRONG>reset</STRONG>.
+
+ The AT&T <STRONG>tput</STRONG> utility (AIX, HPUX, Solaris) incorporated
+ the terminal-mode manipulation as well as termcap-based
+ features such as resetting tabstops from <STRONG>tset</STRONG> in BSD
+ (4.1c), presumably with the intention of making <STRONG>tset</STRONG> obso-
+ lete. However, each of those systems still provides <STRONG>tset</STRONG>.
+ In fact, the commonly-used <STRONG>reset</STRONG> utility is always an
+ alias for <STRONG>tset</STRONG>.
+
+ The <STRONG>tset</STRONG> utility provides for backward-compatibility with
+ BSD environments (under most modern UNIXes, <STRONG>/etc/inittab</STRONG>
+ and <STRONG>getty(1)</STRONG> can set <STRONG>TERM</STRONG> appropriately for each dial-up
+ line; this obviates what was <STRONG>tset</STRONG>'s most important use).
+ This implementation behaves like 4.4BSD <STRONG>tset</STRONG>, with a few
+ exceptions specified here.
+
+ A few options are different because the <STRONG>TERMCAP</STRONG> variable
+ is no longer supported under terminfo-based <STRONG>ncurses</STRONG>:
+
+ <STRONG>o</STRONG> The <STRONG>-S</STRONG> option of BSD <STRONG>tset</STRONG> no longer works; it prints
+ an error message to the standard error and dies.
+
+ <STRONG>o</STRONG> The <STRONG>-s</STRONG> option only sets <STRONG>TERM</STRONG>, not <STRONG>TERMCAP</STRONG>.
+
+ There was an undocumented 4.4BSD feature that invoking
+ <STRONG>tset</STRONG> via a link named "TSET" (or via any other name begin-
+ ning with an upper-case letter) set the terminal to use
projects / ncurses.git / blobdiff