Some will regard this as an enhancement request. To each his own, but IMO *grep has always had a huge deficiency when processing natural languages due to line breaks. PDFGREP especially because most PDF docs carry a payload of natural language.

If I need to search for “the.orange.menace“ (dots are 1-char wildcards), of course I want to be told of cases like this:

A court whereby no one is above the law found the orange  
menace guilty on 34 counts of fraud..

When processing a natural language a sentence terminator is almost always a more sensible boundary. There’s probably no command older than grep that’s still in use today. So it’s bizarre that it has not evolved much. In the 90s there was a Lexis Nexus search tool which was far superior for natural language queries. E.g. (IIRC):

• foo w/s bar :: matches if “foo” appears within the same sentence as “bar”
• foo w/4 bar :: matches if “foo” appears within four words of “bar”
• foo pre/5 bar :: matches if “foo” appears before “bar”, within five words
• foo w/p bar :: matches if “foo” appears within the same paragraph as “bar”

Newlines as record separators are probably sensible for all things other than natural language. But for natural language grep is a hack.