Hello!

grep is behaving differently when outputting with --color=auto when lines are ending with CRLF (like Windows text files).

The issue is that if I have a file with CRLF line terminator, for example, a file named test.txt, containing:

Line 1<CR><LF>

Line 2<CR><LF>

Line 3<CR><LF>

Or:

$od -c test.txt

0000000   L   i   n   e       1  \r  \n   L   i   n   e       2  \r  \n

0000020   L   i   n   e       3  \r  \n

0000030

Then, If I type:

$ grep --color=auto "." test.txt

That is, I tell grep to display every lines containing at least one character (that is, every lines),  I get on terminal output just 3 empty lines.  However, if I type:

$ grep "." test.txt

Line 1

Line 2

Line 3

Then I do have every lines on the output.

I tried on both SSH and direct console with same result.

On my SSH terminal, I captured output, and what I see is

<CR><LF>

<CR><LF>

<CR><LF>

Here are a few variations:

- I tried with a longer file, like 100 lines, and I do get some of the lines printed, but truncated to the terminal screen width.

- The issue here was with printing every lines, but I do get the same result as long as I match any end of lines, like grep "2.*" test.txt, or even "grep 2[[:cntrl:]]$" test.txt

- The problem is there only when

This was with grep 2.27 (also tried 2.16, which I had before upgrading to 2.27).

Regards,

Eric