[ale] diff being boneheaded

[Sparr]

`diff -w` will ignore whitespace entirely. this will solve problems with
trailing spaces, spaces-vs-tabs, non printing spaces, etc.


On Wed, Aug 7, 2013 at 1:53 PM, Lightner, Jeff <JLightner at water.com> wrote:

> cat -vt on the files should show non-printing characters including tabs -
> maybe output of same to additional files and diff on those would help e.g.
> cat -vt file1 >file1.vt
> cat -vt2 file2 >file2.vt
> diff file1.vt file2.vt
>
> Also often if I have large files I want to diff I usually use sdiff
> instead (widening my terminal session as far as possible first) as it will
> insure the lines are reasonably close to each other.  (This is a side by
> side diff.)
>
>
>
>
>
> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
> Stephen R. Blevins
> Sent: Wednesday, August 07, 2013 1:29 PM
> To: Atlanta Linux Enthusiasts
> Subject: Re: [ale] diff being boneheaded
>
> Could there be tabs in one file's lines, and spaces in the other?  What
> about other unprintable characters?
>
> Stephen R. Blevins
> stephen.r.blevins at gmail.com
>
> On 08/07/2013 12:37 PM, Jim Kinney wrote:
> > I've got 2 text files  > 6M lines each. Each file is sorted in
> > dictionary order. diff is flagging identical lines between them as
> <snip>
> > See JOBS, ANNOUNCE and SCHOOLS lists at
> > http://mail.ale.org/mailman/listinfo
> >
>
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