MFC r321450: bsdgrep(1): Don't exit before processing every file

Given an empty pattern (i.e. grep "" A B), bsdgrep(1) would previously
exit() with the appropriate exit code upon encountering an empty file.
Likely intended as an optimization, but this behavior is technically
incorrect since an empty pattern should match every line.

PR:		220924
Approved by:	emaste (mentor, blanket MFC)

1 files changed, 2 insertions, 10 deletions

diff --git a/usr.bin/grep/util.c b/usr.bin/grep/util.c
index a2eecc4..4e0c80c 100644
--- a/usr.bin/grep/util.c
+++ b/usr.bin/grep/util.c
@@ -259,16 +259,8 @@ procfile(const char *fn)
 		pc.ln.boff = 0;
 		pc.ln.off += pc.ln.len + 1;
 		if ((pc.ln.dat = grep_fgetln(f, &pc.ln.len)) == NULL ||
-		    pc.ln.len == 0) {
-			if (pc.ln.line_no == 0 && matchall)
-				/*
-				 * An empty file with an empty pattern and the
-				 * -w flag does not match
-				 */
-				exit(matchall && wflag ? 1 : 0);
-			else
-				break;
-		}
+		    pc.ln.len == 0)
+			break;
 
 		if (pc.ln.len > 0 && pc.ln.dat[pc.ln.len - 1] == fileeol)
 			--pc.ln.len;