(info "(coreutils) nl invocation") says
‘pBRE’
number only lines that contain a match for the basic regular
expression BRE. *Note Regular Expressions: (grep)Regular
Expressions.
OK, but add a new functionality:
‘PBRE’
Do NOT number lines that contain a match for the basic regular
expression BRE. *Note Regular Expressions: (grep)Regular
Expressions.
$ nl --version
nl (GNU coreutils) 8.30
