Re: [PATCH] grep: -r with no args now searches "."

[Paolo Bonzini]

On 01/02/2012 01:22 PM, Paul Eggert wrote:
> This is not an upward compatible change, since "grep -r PAT<file"
> will no longer search standard input, but that's OK; nobody should
> be using "grep -r" that way anyway.

... except people which use GREP_OPTIONS.

We should first warn about this, and then change it after a year or so.

In addition, it seems to me that while this behavior would be fine for 
-r/-R, keeping a default of stdin would be better for 
--directories=recurse, which is currently a synonym.

Please revert, and let more time pass in the future before installing 
backwards-incompatible changes.

Paolo