Date: Sun, 1 Aug 1999 11:00:02 -0700 (PDT) From: "Danny J. Zerkel" <dzerkel@columbus.rr.com> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/12137: something wrong with shell -- functions with arithm expressions Message-ID: <199908011800.LAA47664@freefall.freebsd.org>
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The following reply was made to PR bin/12137; it has been noted by GNATS.
From: "Danny J. Zerkel" <dzerkel@columbus.rr.com>
To: freebsd-gnats-submit@freebsd.org, mi@aldan.algebra.com
Cc:
Subject: Re: bin/12137: something wrong with shell -- functions with arithm
expressions
Date: Sun, 01 Aug 1999 13:51:38 -0400
Mikhail,
Well the addition is not required, nor does it have to be a function.
This problem occurs when taking the length of an numbered argument value
inside an algorithmic expression.
So this displays the same error:
set -- "abc (def [xyz])"
echo $((${#1}))
The problem appears to be that the argument variable is being parsed for
special characters, which result in an extra character for every
character
in the set:
!*?[=~:/-
This parsing should not occur if we are going to take the length of the
resulting string. Try this to see it:
set -- "!*?[=~:/-"
echo $((${#1}))
18!
This patch should fix only this problem, without any side effects:
--- /usr/src/bin/sh/parser.c.orig Sun Sep 13 15:24:57 1998
+++ /usr/src/bin/sh/parser.c Sun Aug 1 13:37:33 1999
@@ -1239,7 +1239,7 @@
} else {
pungetc();
}
- if (dblquote || arinest)
+ if (subtype != VSLENGTH && (dblquote || arinest))
flags |= VSQUOTE;
*(stackblock() + typeloc) = subtype | flags;
if (subtype != VSNORMAL)
-- Danny J. Zerkel
dzerkel@columbus.rr.com
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