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authorJordan K. Hubbard <jkh@FreeBSD.org>1995-08-30 07:28:06 +0000
committerJordan K. Hubbard <jkh@FreeBSD.org>1995-08-30 07:28:06 +0000
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+ THIS MATERIAL IS PROVIDED "AS IS". THERE ARE NO WARRANTIES OF
+ ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ FITNESS FOR A PARTICULAR PURPOSE. Neither Hewlett-Packard nor
+ Hugh Mahon shall be liable for errors contained herein, nor for
+ incidental or consequential damages in connection with the
+ furnishing, performance or use of this material. Neither
+ Hewlett-Packard nor Hugh Mahon assumes any responsibility for
+ the use or reliability of this software or documentation. This
+ software and documentation is totally UNSUPPORTED. There is no
+ support contract available. Hewlett-Packard has done NO
+ Quality Assurance on ANY of the program or documentation. You
+ may find the quality of the materials inferior to supported
+ materials.
+
+ This software may be distributed under the terms of Larry Wall's
+ Artistic license, a copy of which is included in this distribution.
+ (see doc/Artistic).
+
+ This notice must be included with this software and any
+ derivatives.
+
+ Any modifications to this software by anyone but the original author
+ must be so noted.
+
+
+The editor 'ee' (easy editor) is intended to be a simple, easy to use
+terminal-based screen oriented editor that requires no instruction to
+use. Its primary use would be for people who are new to computers, or who
+use computers only for things like e-mail.
+
+ee's simplified interface is highlighted by the use of pop-up menus which
+make it possible for users to carry out tasks without the need to
+remember commands. An information window at the top of the screen shows
+the user the operations available with control-keys.
+
+ee allows users to use full eight-bit characters. If the host system has
+the capabilities, ee can use message catalogs, which would allow users to
+translate the message catalog into other languages which use eight-bit
+characters. See the file ee.i18n.guide for more details.
+
+ee relies on the virtual memory abilities of the platform it is running on
+and does not have its own memory management capabilities.
+
+I am releasing ee because I hate to see new users and non-computer types
+get frustrated by vi, and would like to see more intuitive interfaces for
+basic tools (both character-based and graphical) become more pervasive.
+Terminal capabilities and communication speeds have evolved considerably
+since the time in which vi's interface was created, allowing much more
+intuitive interfaces to be used. Since character-based I/O won't be
+completely replaced by graphical user interfaces for at least a few more
+years, I'd like to do what I can to make using computers with less
+glamorous interfaces as easy to use as possible. If terminal interfaces
+are still used in ten years, I hope neophytes won't still be stuck with
+only vi.
+
+For a text editor to be easy to use requires a certain set of abilities. In
+order for ee to work, a terminal must have the ability to position the cursor
+on the screen, and should have arrow keys that send unique sequences
+(multiple characters, the first character is an "escape", octal code
+'\033'). All of this information needs to be in a database called "terminfo"
+(System V implementations) or "termcap" (usually used for BSD systems). In
+case the arrow keys do not transmit unique sequences, motion operations are
+mapped to control keys as well, but this at least partially defeats the
+purpose. The curses package is used to handle the I/O which deals with the
+terminal's capabilities.
+
+While ee is based on curses, I have included here the source code to
+new_curse, a subset of curses developed for use with ee. 'curses' often
+will have a defect that reduces the usefulness of the editor relying upon
+it. This is unused by the FreeBSD version of ee (the existing ncurses
+library works just fine) but is included in the doc subdirectory for
+reference purposes should anyone wish to port ee to a platform for
+which the existing curses libraries are insufficient.
+
+The files doc/new_curse.[ch] contain a subset of the 'curses' library
+used by applications to handle screen output. Unfortunately, curses
+varies from system to system, so I developed new_curse to provide
+consistent behavior across systems. It works on both SystemV and BSD
+systems, and while it can sometimes be slower than other curses packages,
+it will get the information on the screen painted correctly more often
+than vendor supplied curses. Again, FreeBSD does not have this problem
+but you may find it useful on other platforms.
+
+If you experience problems with data being displayed improperly, check
+your terminal configuration, especially if you're using a terminal
+emulator, and make sure that you are using the right terminfo entry
+before rummaging through code. Terminfo entries often contain
+inaccuracies, or incomplete information, or may not totally match the
+terminal or emulator the terminal information is being used with.
+Complaints that ee isn't working quite right often end up being something
+else (like the terminal emulator being used).
+
+Both ee and new_curse were developed using K&R C (also known as "classic
+C"), but it can also be compiled with ANSI C. You should be able to
+build ee by simply typing "make".
+
+ee is the result of several conflicting design goals. While I know that it
+solves the problems of some users, I also have no doubt that some will decry
+its lack of more features. I will settle for knowing that ee does fulfill
+the needs of a minority (but still large number) of users. The goals of ee
+are:
+
+ 1. To be so easy to use as to require no instruction.
+ 2. To be easy to compile and, if necessary, port to new platforms
+ by people with relatively little knowledge of C and UNIX.
+ 3. To have a minimum number of files to be dealt with, for compile
+ and installation.
+ 4. To have enough functionality to be useful to a large number of
+ people.
+
+Hugh Mahon |___|
+h_mahon@fc.hp.com | |
+ |\ /|
+ | \/ |
+