view runtime/syntax/README.txt @ 33776:9503dc55b5ed v9.0.2108

patch 9.0.2108: [security]: overflow with count for :s command Commit: https://github.com/vim/vim/commit/ac63787734fda2e294e477af52b3bd601517fa78 Author: Christian Brabandt <cb@256bit.org> Date: Tue Nov 14 20:45:48 2023 +0100 patch 9.0.2108: [security]: overflow with count for :s command Problem: [security]: overflow with count for :s command Solution: Abort the :s command if the count is too large If the count after the :s command is larger than what fits into a (signed) long variable, abort with e_value_too_large. Adds a test with INT_MAX as count and verify it correctly fails. It seems the return value on Windows using mingw compiler wraps around, so the initial test using :s/./b/9999999999999999999999999990 doesn't fail there, since the count is wrapping around several times and finally is no longer larger than 2147483647. So let's just use 2147483647 in the test, which hopefully will always cause a failure Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Thu, 16 Nov 2023 22:15:10 +0100
parents 1b2730ece70e
children
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This directory contains Vim scripts for syntax highlighting.

These scripts are not for a language, but are used by Vim itself:

syntax.vim	Used for the ":syntax on" command.  Uses synload.vim.

manual.vim	Used for the ":syntax manual" command.  Uses synload.vim.

synload.vim	Contains autocommands to load a language file when a certain
		file name (extension) is used.  And sets up the Syntax menu
		for the GUI.

nosyntax.vim	Used for the ":syntax off" command.  Undo the loading of
		synload.vim.

The "shared" directory contains generated files and what is used by more than
one syntax.


A few special files:

2html.vim	Converts any highlighted file to HTML (GUI only).
colortest.vim	Check for color names and actual color on screen.
hitest.vim	View the current highlight settings.
whitespace.vim  View Tabs and Spaces.


If you want to write a syntax file, read the docs at ":help usr_44.txt".

If you make a new syntax file which would be useful for others, please send it
to the vim-dev mailing list <vim-dev@vim.org>.  Include instructions for
detecting the file type for this language, by file name extension or by
checking a few lines in the file. And please write the file in a portable way,
see ":help 44.12".

If you have remarks about an existing file, send them to the maintainer of
that file.  Only when you get no response send a message to the vim-dev
mailing list: <vim-dev@vim.org>.

If you are the maintainer of a syntax file and make improvements, send the new
version to the vim-dev mailing list: <vim-dev@vim.org>

For further info see ":help syntax" in Vim.