[PATCH V2] xfstests: don't remove trailing zeros from integers

[Dave Chinner]

On Fri, Mar 01, 2013 at 01:01:58PM -0500, Eric Whitney wrote:
> _within_tolerance strips trailing zeros from the min and max range
> values it outputs.  This leads to damage if the min or max value is
> an integer containing trailing zeros rather than a real number with
> a fractional part containing trailing zeros. Xfstest 289 can exhibit
> this problem when its input is out of range.  Modify the code so it
> will only remove trailing zeros found after a decimal point, and
> remove decimal points not followed by digits.
> 
> Signed-off-by: Eric Whitney <enwlinux at gmail.com>
> ---
>  common.filter |    7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/common.filter b/common.filter
> index 9e4c90c..bfc800b 100644
> --- a/common.filter
> +++ b/common.filter
> @@ -106,8 +106,11 @@ EOF
>  
>    # fix up min, max precision for output
>    # can vary for 5.3, 6.2
> -  _min=`echo $_min | sed -e 's/0*$//'` # get rid of trailling zeroes
> -  _max=`echo $_max | sed -e 's/0*$//'` # get rid of trailling zeroes
> +
> +  # remove any trailing zeroes from min, max if they have fractional parts
> +  # and then remove any decimal points not followed by digits
> +  _min=`echo $_min | sed -e '/\./s/0*$//' | sed -e 's/\.$//'`
> +  _max=`echo $_max | sed -e '/\./s/0*$//' | sed -e 's/\.$//'`

You can do this with a single sed invocation via multiple
expressions:

$ echo 200.00 | sed -e '/\./s/0*$//' -e 's/\.$//'
200
$

Cheers,

Dave.

-- 
Dave Chinner
david at fromorbit.com