Re: [coreutils] coreutils-7.0 expr exposes long-standing bug in matlab startup script

[Pádraig Brady]

Jim Meyering wrote:
> For reference, here's a small patch I just wrote that solves
> at least some of the problems reported here, while retaining
> the ability to use MP at run time.

I'd essentially done the same thing, so I think that will solve
most of the backwards compat issues.

Note if leaving the --bignum options you should probably also do:

-Usage: %s EXPRESSION\n\
-  or:  %s OPTION\n\
+Usage: %s [OPTION] EXPRESSION\n\

Though I strongly agree with Paul that it shouldn't be an option.
I was cooking up a patch as I also noticed the 64 bit int regression:

$ expr.orig 4294967296 + 1
4294967297
$ ./expr --no-bignum 4294967296 + 1
./expr: 4294967296: Numerical result out of range

But he's faster than me so less testing for me to do :)
I'll add some extra tests for the "-11 + 3" case etc.
if I don't notice any going in in the next while.

cheers,
Pádraig.