Mercurial > vim
view runtime/tutor/README.txt @ 34074:1629cc65d78d v9.1.0006
patch 9.1.0006: is*() and to*() function may be unsafe
Commit: https://github.com/vim/vim/commit/184f71cc6868a240dc872ed2852542bbc1d43e28
Author: Keith Thompson <Keith.S.Thompson@gmail.com>
Date: Thu Jan 4 21:19:04 2024 +0100
patch 9.1.0006: is*() and to*() function may be unsafe
Problem: is*() and to*() function may be unsafe
Solution: Add SAFE_* macros and start using those instead
(Keith Thompson)
Use SAFE_() macros for is*() and to*() functions
The standard is*() and to*() functions declared in <ctype.h> have
undefined behavior for negative arguments other than EOF. If plain char
is signed, passing an unchecked value from argv for from user input
to one of these functions has undefined behavior.
Solution: Add SAFE_*() macros that cast the argument to unsigned char.
Most implementations behave sanely for negative arguments, and most
character values in practice are non-negative, but it's still best
to avoid undefined behavior.
The change from #13347 has been omitted, as this has already been
separately fixed in commit ac709e2fc0db6d31abb7da96f743c40956b60c3a
(v9.0.2054)
fixes: #13332
closes: #13347
Signed-off-by: Keith Thompson <Keith.S.Thompson@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Thu, 04 Jan 2024 21:30:04 +0100 |
parents | ca8e754bdd53 |
children |
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Tutor is a "hands on" tutorial for new users of the Vim editor. Most new users can get through it in less than one hour. The result is that you can do a simple editing task using the Vim editor. Tutor is a file that contains the tutorial lessons. You can simply execute "vim tutor" and then follow the instructions in the lessons. The lessons tell you to modify the file, so DON'T DO THIS ON YOUR ORIGINAL COPY. On Unix you can also use the "vimtutor" program. It will make a scratch copy of the tutor first. I have considered adding more advanced lessons but have not found the time. Please let me know how you like it and send any improvements you make. Bob Ware, Colorado School of Mines, Golden, Co 80401, USA (303) 273-3987 bware@mines.colorado.edu bware@slate.mines.colorado.edu bware@mines.bitnet Translation ----------- The tutor.xx and tutor.xx.utf-8 files are translated files (where xx is the language code). The encoding of tutor.xx might be latin1 or other traditional encoding. If you don't need a translation with such traditional encoding, you just need to prepare the tutor.xx.utf-8 file. If you need another encoding, you can also prepare a file named tutor.xx.enc (replace enc with the actual encoding name). You might also need to adjust the tutor.vim file. The "make" command can be used for creating tutor.xx from tutor.xx.utf-8. See the Makefile for detail. (For some languages, tutor.xx.utf-8 is created from tutor.xx for historical reasons.) [This file was modified for Vim by Bram Moolenaar et al.]