wordexp bug

Peter Rosin peda@lysator.liu.se
Mon Aug 20 18:52:00 GMT 2012

On 2012-08-17 21:49, Peter Rosin wrote:
> On 2012-08-17 15:35, Yaakov (Cygwin/X) wrote:
>> AFAICS wordexp(3) is completely broken, returning WRDE_SYNTAX no
>> matter what I supply as the string.  STC attached.
> I suspect you are using Cygwin, and if so I suspect that we have been
> bitten by this change in bash-4.1-rc:
> c.  The (undocumented) --wordexp option is no longer included by default.
> The documentation states that you have to enable the WORDEXP_OPTION
> when building bash, but I'll leave the details of how to do that to Eric,
> the Cygwin bash maintainer.

Maybe that was a bit too terse, the facts are that newlib forks
"bash --wordexp" when wordexp(3) is called. Newer Cygwin bashes doesn't
support the undocumented --wordexp option, presumably since bash no
longer includes that option by default.  I found this out by looking
up the documentation for the undocumented option in bash (i.e. the

I should perhaps also mention, for new Cygwin recipients, that the
original message appeared on the newlib list, which is why I could
only suspect that Yaakov was using Cygwin, but that guess seemed
kind of safe...


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