https://github.com/larsbrinkhoff/scame

TECO EMACS clone for Unix
https://github.com/larsbrinkhoff/scame

Last synced: 8 months ago
JSON representation

TECO EMACS clone for Unix

• Host: GitHub
• URL: https://github.com/larsbrinkhoff/scame
• Owner: larsbrinkhoff
• Created: 2018-11-04T09:05:57.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2018-11-04T09:06:22.000Z (about 7 years ago)
• Last Synced: 2025-01-19T16:10:59.676Z (10 months ago)
• Language: C
• Size: 204 KB
• Stars: 4
• Watchers: 5
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README

Awesome Lists containing this project

README

          
This is the editor called SCAME.

SCAME is just another one of those ersatz EMACS editors.

The purpose has been to make it look as much as possible like

EMACS on TOPS-20 and AMIS on TOPS-10 and VAX/VMS. A lot of

things are still missing, and some new facilities have been

added to make it fit in better with the UNIX philosophy.

HISTORY

SCAME was first implemented in 1980 on a PDP-11/70 running UNIX

v7 at the University of Linkoeping, Sweden. An old version is

still being used there in programming classes (They use EMACS on

DEC-20 and AMIS on DEC-10). The development was later moved,

first to a VAX running BSD 4.1 and most recently to a SUN

running BSD 4.2.

It has compiler switches for several different versions of UNIX,

but only the Berkeley version has been verified (to a degree).

It is not likely that it will run without modifications on a

PDP, especially not one without separate I&D. It is fairly

large, and always keep an entire buffer (file) in core.

HOW TO INSTALL SCAME

-  Move the directory "lib" to be "/usr/lib/scame" or to

   wherever you want it.

-  Copy the file config.sample to be config.h and then edit it

   to make sure that it applies to your installation.

   Define your machine type and UNIX version, as well as paths

   to special files and programs.

-  Finally issue "make scame" and cross your fingers.

TERMINAL TYPES

SCAME uses TERMCAP to handle different terminal types.

The terminal must be a CRT with the following capabilities:

- Clear screen (cl)

- Cursor up (up)

- Direct cursor addressing (cm) OR 

	Cursor home (ho) and Cursor right (nd)

Scame will also use the following, if available:

al - Insert Line

bs - Backspace

bc - Backspace if not ^H

cd - Clear to end of display

ce - Clear to end of line

cr - Carriage Return

cs - Scroll Region

dl - Delete Line

ke - Out of Keypad Transmit mode

ks - Keypad Transmit mode

nl - New Line

so - Enter standout mode

sr - Scroll Reverse

se - Exit standout mode

ti - Start of programs which use cm

te - End of programs which use cm

km - Meta-key	(This is a Boolean field saying that the terminal has

		 a META key which sets the most significant bit. It will

		 set the corresponding SCAME variable Hackmatic to 1 and

		 causes the terminal to run in raw mode)

For more information, read the documentation on TERMCAP in section 5

of the UNIX manual.

TEMPORARY FILES

SCAME uses a number of temporary files which are kept in a common

tmp-directory.  To make SCAME restartable, these files will not be

deleted upon exit.  Therefore, the files are not tied to any

specific invokation of SCAME, but rather to the process that invoked

SCAME (normally the login shell).  A consequence is that the temp-

files will stay in the tmp-directory even after the user logs out,

and will need explicit deletion by somebody.

To do this, a special program called "scame-reaper" is used.

It checks the tmp-directory for any of SCAME's temp-files whose

processes have died and deletes them.  It should be run often enough

to avoid cramming the tmp-directory and at least before every turn

of the process-counter or after restarting the system.  In Linkoping

it is run by "cron" three times a day (3 am, 1pm and 5pm).

This is achieved by including the following line in the file

/usr/lib/crontab:

0	3,13,17	*	*	*	/usr/lib/scame-reaper

BUGS

Plenty. If you find any, please let me know.

Send bug fixes to me, and I will post them to the net.

Here are some I know of already:

On machines without virtual memory, SCAME can't handle

files that are larger than about 44 kchars, due to the fact

that the current buffer is kept in primary memory.

SCAME can be very slow during some operations, very few

optimizations have been made.

There is a lot of documentation missing. (What did I do with it? :-)

THINGS TO COME

These are some things I think will be needed, and I will try

to make them come true one day.

M-T

M-Y

M-Q

C-M-\

C-X C-O

M-X Set Key

M-X Keep Matching Lines

M-X List Matching Lines

M-X Put Macro on Key

Query in kbd macro

Delete Hacking Tabs

Full recognition on all strings would be nice.

WARNING

If you would like to hack SCAME, be aware that the code is

unstructured and tricky. There are practically no comments.

COPYRIGHT

=========

All files in this distribution are copyrighted.

It is distributed gratis to anybody for non-commercial,

non-military use.

I would appreciate if installations were reported to me so

I know how widely it is being used. Also if you could keep me

posted about changes, bugs, opinions and statistics.

(e.g. how much you are using it).

	Leif Samuelsson

	Ericsson Information Systems AB

	Advanced Workstations Division

	S-126 25  STOCKHOLM

	SWEDEN

	phone: ..46 8 764 00 00

	..{decvax, philabs}!mcvax!enea!erix!erisun!leif