Date: Tue, 25 Jul 2017 01:50:37 +0000 (UTC) From: Kyle Evans <kevans@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r321450 - in head: contrib/netbsd-tests/usr.bin/grep usr.bin/grep Message-ID: <201707250150.v6P1obZg008856@repo.freebsd.org>
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Author: kevans Date: Tue Jul 25 01:50:37 2017 New Revision: 321450 URL: https://svnweb.freebsd.org/changeset/base/321450 Log: 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 Reviewed by: emaste, cem (earlier version), ngie Approved by: emaste (mentor) Differential Revision: https://reviews.freebsd.org/D11698 Modified: head/contrib/netbsd-tests/usr.bin/grep/t_grep.sh head/usr.bin/grep/util.c Modified: head/contrib/netbsd-tests/usr.bin/grep/t_grep.sh ============================================================================== --- head/contrib/netbsd-tests/usr.bin/grep/t_grep.sh Tue Jul 25 00:33:53 2017 (r321449) +++ head/contrib/netbsd-tests/usr.bin/grep/t_grep.sh Tue Jul 25 01:50:37 2017 (r321450) @@ -669,6 +669,24 @@ mmap_eof_not_eol_body() atf_check -s exit:0 -o not-empty \ env MALLOC_CONF="redzone:true" grep --mmap -e " " test2 } + +atf_test_case matchall +matchall_head() +{ + atf_set "descr" "Check proper behavior of matching all with an empty string" +} +matchall_body() +{ + printf "" > test1 + printf "A" > test2 + printf "A\nB" > test3 + + atf_check -o inline:"test2:A\ntest3:A\ntest3:B\n" grep "" test1 test2 test3 + atf_check -o inline:"test3:A\ntest3:B\ntest2:A\n" grep "" test3 test1 test2 + atf_check -o inline:"test2:A\ntest3:A\ntest3:B\n" grep "" test2 test3 test1 + + atf_check -s exit:1 grep "" test1 +} # End FreeBSD atf_init_test_cases() @@ -709,5 +727,6 @@ atf_init_test_cases() atf_add_test_case badcontext atf_add_test_case mmap atf_add_test_case mmap_eof_not_eol + atf_add_test_case matchall # End FreeBSD } Modified: head/usr.bin/grep/util.c ============================================================================== --- head/usr.bin/grep/util.c Tue Jul 25 00:33:53 2017 (r321449) +++ head/usr.bin/grep/util.c Tue Jul 25 01:50:37 2017 (r321450) @@ -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;
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