Re: bash CR and backquotes trouble

[Nicolas Roche <roche at adacore dot com>]

Larry Hall (Cygwin) a écrit :
> On 11/02/2006, Nicolas Roche wrote:
> > I am using bash version:
> > 3.1.17(9)
> >
> > I have tried to use shopt -s igncr but I have an issue with the 
> > following shell construct:
> >
> > t=`gcc --print-multi-lib` where gcc is a mingw gcc.
> >
> > As my gcc is a mingw program, it outputs CR/LFs. In previous versions 
> > bash used to ignore the CR, so t variable was not containing any CR.
> > Now this is no more the case and this is causing some troubles 
>
>
> Why isn't "t=`gcc --print-multi-lib | d2u`" not a solution here?

Well for two reasons:
- portability. the same homemade scripts are also used among a large 
flavors of unixes (AIX, IRIX, HP-UX, Tru64, ....). dos2unix is not 
installed on all of them...
- these constructs are appearing  in projects like GCC (I triggered the 
error while building a mingw GCC).

Is there any technical reason why igncr does not handle this case ? 
What's the exact semantic of this option by the way ?

Nicolas

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