[Bug 218467] bug in grep -v -w

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218467

            Bug ID: 218467
           Summary: bug in grep -v -w
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: bin
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: wes at lexonics.com

Not sure this bug characterization is correct, but this is how it appeared to
me.

Also, not sure if CURRENT is correct choice for "Version"; this is on MacOS
Sierra 10.12.4:

$ grep -V
grep (BSD grep) 2.5.1-FreeBSD

I apologize if either assumption is incorrect.

Some examples:

$ echo x xx | grep -w x
x xx
$ #CORRECT

$ echo xx x | grep -w x
xx x
$ #CORRECT

$ echo x xx | grep -v -w x
$ #CORRECT

$ echo xx x | grep -v -w x
xx x
$ #INCORRECT

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