mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-21 14:29:55 +08:00
32 lines
1.5 KiB
Plaintext
32 lines
1.5 KiB
Plaintext
Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved.
|
|
|
|
THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
|
|
OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
|
|
|
|
Permission is hereby granted to use or copy this program
|
|
for any purpose, provided the above notices are retained on all copies.
|
|
Permission to modify the code and to distribute modified code is granted,
|
|
provided the above notices are retained, and a notice that the code was
|
|
modified is included with the above copyright notice.
|
|
|
|
Please send bug reports to Hans-J. Boehm (boehm@sgi.com).
|
|
|
|
This is a string packages that uses a tree-based representation.
|
|
See cord.h for a description of the functions provided. Ec.h describes
|
|
"extensible cords", which are essentially output streams that write
|
|
to a cord. These allow for efficient construction of cords without
|
|
requiring a bound on the size of a cord.
|
|
|
|
de.c is a very dumb text editor that illustrates the use of cords.
|
|
It maintains a list of file versions. Each version is simply a
|
|
cord representing the file contents. Nonetheless, standard
|
|
editing operations are efficient, even on very large files.
|
|
(Its 3 line "user manual" can be obtained by invoking it without
|
|
arguments. Note that ^R^N and ^R^P move the cursor by
|
|
almost a screen. It does not understand tabs, which will show
|
|
up as highlighred "I"s. Use the UNIX "expand" program first.)
|
|
To build the editor, type "make cord/de" in the gc directory.
|
|
|
|
This package assumes an ANSI C compiler such as gcc. It will
|
|
not compile with an old-style K&R compiler.
|