RFR: 8011350 : hgforesth.sh fails if sh is not bash

[David Holmes]

On 4/04/2013 1:56 AM, Mike Duigou wrote:
> An alternative has been suggested: convert the hgforest.sh script to a bash script. I have tested this alternative on unbuntu linux 11.04, solaris 10u9, MacOS 10.7 and cygwin 1.7.17. This seems like less risk and there doesn't seem to be a compelling reason to stick with classic sh.
>
> I have prepared an alternate webrev here:
>
> http://cr.openjdk.java.net/~mduigou/JDK-8011350/1

Looks good to me.

Aside: your webrev doesn't include a patch file! Is this something the 
updated webrev has lost ???

David

> We could still consider the original webrev if using bash turns out to have unexpected issues.
>
> Mike
>
> On Apr 2 2013, at 20:03 , Mike Duigou wrote:
>
>> Hello all;
>>
>> Further testing on JDK-8011342 revealed that hgforest.sh can fail if the sh shell is not bash. The problem appears to be due to mixing of -o -a and ! in [] test expressions.
>>
>> I have prepared a webrev here:
>>
>> http://cr.openjdk.java.net/~mduigou/JDK-8011350/0/webrev/common/bin/hgforest.sh.udiff.html
>>
>> This converts all of the potentially problematic [ expr -o expr ] [ expr -a expr ] and [ expr -{o|a} ! expr ] to use "test". My conversions are based on the advice of the autotools chapter on "Writing portable Bourne Shell" (http://sourceware.org/autobook/autobook/autobook_208.html#SEC208) for avoiding potential problems.
>>
>> The other option is just to require bash which is already required by the new build process.
>>
>> Mike
>