On 4/04/2013 1:22 PM, Mike Duigou wrote:
On Apr 3 2013, at 20:14 , David Holmes wrote:
On 4/04/2013 9:30 AM, Mike Duigou wrote:
I've received some feedback from Tim Bell and David Katleman.
Here's an updated version of the patch.
http://cr.openjdk.java.net/~mduigou/JDK-8011350/2
It turns out the real shell incompatibility was more straightforward. The
outright conversion to bash isn't necessary. Replacement of '==' with '=' and
double to single quotes in the cut command are sufficient.
The whichhg changes are based on an observation by Tim Bell in another bug that some versions of
Solaris "/usr/bin/which" don't generate an exit code and instead output the message
"no foo in PATH". This change better handles no mercurial being present.
Seems to work. I confess I'm puzzled by the == issue as it doesn't seem to be a
valid operator anywhere, yet worked with bash ??
Bash accepts both according to to
http://www.gnu.org/software/bash/manual/bashref.html#Bash-Conditional-Expressions
(The page also explicitly mentions = is more portable/compatible)
Yeah I was actually looking at the specs for "test" as it doesn't list
== I assume bash doesn't necessarily use the test command for
processing [ and [[.
David
David
Mike
On Apr 3 2013, at 08:56 , 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
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
