bash evaluation change...
rrakus at redhat.com
Mon Mar 7 12:38:21 UTC 2011
On 03/03/2011 09:03 PM, Nathanael D. Noblet wrote:
> On 03/03/2011 12:42 PM, Will Woods wrote:
>> On Wed, 2011-03-02 at 22:55 -0800, Toshio Kuratomi wrote:
>>> I'd say, report this as a bug and see where it leads. It's certainly not
>>> expected behaviour even if it is intentional.
>> One-line reproducer:
>> case x"" in x) echo matches x;; x?) echo matches x? but not x;; esac
>> I notice the bash-4.2 CHANGES file mentions something like this in
>> the changes from alpha to beta:
>> "b. Fixed a bug that caused partially-quoted words that were not
>> subject to word splitting to retained quoted NULLs."
>> Maybe that's not as fixed as they thought?
> Yeah, got the following from the bash-bug list that Roman submitted.
> Here's a fix. This is very similar to bash42-004.
> *** ../bash-4.2-patched/subst.c 2011-02-25 12:03:58.000000000 -0500
> --- subst.c 2011-03-03 14:08:23.000000000 -0500
> *** 4609,4614 ****
> --- 4611,4617 ----
> if (ifs_firstc == 0)
> word->flags |= W_NOSPLIT;
> + word->flags |= W_NOSPLIT2;
> result = call_expand_word_internal (word, quoted, 0, (int *)NULL,
> (int *)NULL);
> expand_no_split_dollar_star = 0;
> So I presume it'll make its way into a newer bash eventually?? Not sure
> on the process but it looks like the powers that be recognize and have a
> fix for it.
Yep, this patch is from upstream. I will apply it soon. You can track
the issue in bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=681940
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