Re: grep(1) bug - duplicate output lines

On 9/27/23 22:34, Greg 'groggy' Lehey wrote:
> On Wednesday, 27 September 2023 at 22:30:43 -0500, Kyle Evans wrote:
>> On 9/27/23 21:40, Jamie Landeg-Jones wrote:
>>> When using color=always and a regex of '.' (for example), output lines
>>> are duplicated.
>>>
>>> $ grep --version
>>> grep (BSD grep, GNU compatible) 2.6.0-FreeBSD
>>>
>>> E.G.:
>>>
>>> $ grep --color=always . /etc/fstab
>>
>> I think this is what we want:
>>
>> https://people.freebsd.org/~kevans/grep-color.diff
> 
> That looks surprisingly complicated.  FWIW, this issue didn't occur
> with older versions of grep.
> 

I added the bug sometime before we went live with bsdgrep, I believe. 
GNU grep naturally didn't do things quite like this.