view runtime/macros/README.txt @ 33262:6eac4f616293 v9.0.1899

patch 9.0.1899: potential buffer overflow in PBYTE macro Commit: https://github.com/vim/vim/commit/ffb13674d1af1c90beb229867ec989e4fb232df3 Author: Christian Brabandt <cb@256bit.org> Date: Fri Sep 15 20:22:02 2023 +0200 patch 9.0.1899: potential buffer overflow in PBYTE macro Problem: potential buffer overflow in PBYTE macro Solution: Check returned memline length closes: #13083 the PBYTE macro is used to put byte c at a position lp of the returned memline. However, in case of unexpected errors ml_get_buf() may return either "???" or an empty line in which case it is quite likely that we are causing a buffer overrun. Therefore, switch the macro PBYTE (which is only used in ops.c anyhow) to a function, that verifies that we will only try to access within the given length of the buffer. Also, since the macro is only used in ops.c, move the definition from macros.h to ops.c Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Fri, 15 Sep 2023 20:30:07 +0200
parents a345060d671a
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The macros in the maze, hanoi and urm directories can be used to test Vim for
vi compatibility.  They have been written for vi to show its unlimited
possibilities.	The life macros can be used for performance comparisons.

hanoi	Macros that solve the tower of hanoi problem.
life	Macros that run Conway's game of life.
maze	Macros that solve a maze (amazing!).
urm	Macros that simulate a simple computer: "Universal Register Machine"



The other files contain some handy utilities.  They also serve as examples for
how to use Vi and Vim functionality.

less.sh + less.vim	make Vim work like less (or more)



The following have been moved to an optional package.  Add the command to your
vimrc file to use the package:

packadd! dvorak		" Dvorak keyboard support; adds mappings

packadd! editexisting	" when editing a file that is already edited with
			" another Vim instance, go to that Vim instance

packadd! justify	" justifying text.

packadd! matchit	" makes the % command work better

packadd! shellmenu	" menus for editing shell scripts in the GUI version

packadd! swapmouse	" swap left and right mouse buttons