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Mention that NUL characters are not allowed in sh(1) input.

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I do not consider this a bug because POSIX permits it and argument strings
and environment variables cannot contain '\0' anyway.

PR:		bin/25542
MFC after:	2 weeks
This commit is contained in:
Jilles Tjoelker 2009-09-20 21:42:38 +00:00
parent cf6884f47d
commit 9764aa4157
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=197371
1 changed files with 4 additions and 0 deletions
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bin/sh/sh.1
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@ -375,6 +375,10 @@ introduces a comment if used at the beginning of a word.
The word starting with
.Ql #
and the rest of the line are ignored.
.Pp
.Tn ASCII
.Dv NUL
characters (character code 0) are not allowed in shell input.
.Ss Quoting
Quoting is used to remove the special meaning of certain characters
or words to the shell, such as operators, whitespace, keywords,