cvs commit: src/usr.bin/env env.c

Harti Brandt hartmut.brandt at
Tue Jun 21 06:37:18 GMT 2005

On Mon, 20 Jun 2005, Garance A Drosehn wrote:

GAD>At 7:41 PM +1000 6/20/05, Tim Robbins wrote:
GAD>> On Mon, Jun 20, 2005, Garance A Drosehn wrote:
GAD>>  > gad         2005-06-20 03:14:29 UTC
GAD>> > 
GAD>> >    FreeBSD src repository
GAD>> > 
GAD>> >    Modified files:
GAD>> >      usr.bin/env          env.c
GAD>> >    Log:
GAD>>  >   If the `utility' specified starts with a '/' character, then
GAD>>  >   execute it without checking it for an equals-sign.  If it
GAD>>  >   starts with a slash, then it cannot be a request to set the
GAD>>  >   value of a valid environment variable.
GAD>> This is not strictly correct:
GAD>> 	The value of an environment variable is a string of characters.
GAD>        ...
GAD>> 	These strings have the form name=value; names shall not contain
GAD>> 	the character '='. For values to be portable across systems
GAD>> 	conforming to IEEE Std 1003.1-2001, the value shall be composed
GAD>> 	of characters from the portable character set (except NUL and as
GAD>> 	indicated below).
GAD>Ah.  I jumped to the wrong conclusion based on the description of
GAD>setting environment variables in the man page for 'sh'.  Neither
GAD>sh nor bash allow you to set /SOMEVAR=YES.  setenv in csh seems to
GAD>let you set a value, but then it complains 'Illegal variable name'
GAD>if you try to reference it...


GAD>But I wouldn't mind to undo the '/' check, if people think that's
GAD>a problem.  I only came up with that idea just before I was ready
GAD>to commit, while I was stealing lines from the 'sh' man page...

Yes, please undo.


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