problem with diff -I 'regexp'

Igor Pechtchanski pechtcha@cs.nyu.edu
Fri Oct 15 17:18:00 GMT 2004


On Fri, 15 Oct 2004, Le Dréau Philippe wrote:

> Hello :
> My problem : I'd like to ignore the lines beginning with --
> $ diff -I '^--' test1.txt test2.txt
> 1,3c1,3
> < 1when
> < --I want ?
> < #ok nok
> ---
> > 2when
> > --I want
> > #ok
>
> [snip]
> The lines are in the output, why ?

"man diff", line 35:

       -I RE  --ignore-matching-lines=RE
              Ignore changes whose lines all match RE.
                                   ^^^^^^^^^^^^^^^
(the relevant part is underlined).

Not Cygwin-specific.
	Igor
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