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| author | Ari Sundholm | 2019-01-29 14:42:57 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2019-02-14 14:40:57 +0100 |
| commit | 256ee622249830d102c58edccf893104a4a34037 (patch) | |
| tree | ab1bcfbec588cd3e7fcc3f4696c9e6a7cfb5419b | |
| parent | 5c6b9165e776f60b7bfeb01a2d5fa6331ee0cb89 (diff) | |
| download | busybox-256ee622249830d102c58edccf893104a4a34037.zip busybox-256ee622249830d102c58edccf893104a4a34037.tar.gz | |
grep: fix -x -v with certain pattern orders
We found out that busybox -x -v is a bit broken:
ari@ari-thinkpad:~/busybox$ echo ' aa bb cc' | ./busybox grep -x -e 'aa.*' -e '.*bb.*'
aa bb cc
ari@ari-thinkpad:~/busybox$ echo ' aa bb cc' | ./busybox grep -x -v -e 'aa.*' -e '.*bb.*'
ari@ari-thinkpad:~/busybox$ echo ' aa bb cc' | ./busybox grep -x -e '.*aa.*' -e 'bb.*'
aa bb cc
ari@ari-thinkpad:~/busybox$ echo ' aa bb cc' | ./busybox grep -x -v -e '.*aa.*' -e 'bb.*'
aa bb cc
Last one is wrong.
This patch fixes the issue by making sure that the variable 'found'
never makes a transition from 1 to 0, as this would mean that
grep previously found a match on this input line.
Signed-off-by: Ari Sundholm <ari@tuxera.com>
Signed-off-by: Niko Vähäsarja <niko@tuxera.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | findutils/grep.c | 2 | ||||
| -rwxr-xr-x | testsuite/grep.tests | 7 |
2 files changed, 8 insertions, 1 deletions
diff --git a/findutils/grep.c b/findutils/grep.c index a4033a4..9d9da42 100644 --- a/findutils/grep.c +++ b/findutils/grep.c @@ -404,7 +404,7 @@ static int grep_file(FILE *file) #endif ) { if (option_mask32 & OPT_x) { - found = (gl->matched_range.rm_so == 0 + found |= (gl->matched_range.rm_so == 0 && match_at[gl->matched_range.rm_eo] == '\0'); } else if (!(option_mask32 & OPT_w)) { diff --git a/testsuite/grep.tests b/testsuite/grep.tests index e578897..26f8e69 100755 --- a/testsuite/grep.tests +++ b/testsuite/grep.tests @@ -177,6 +177,13 @@ testing "grep -w word match second word" \ "bword,word\n""wordb,word\n""bwordb,word\n" \ "" + +testing "grep -x -v -e EXP1 -e EXP2 finds nothing if either EXP matches" \ + "grep -x -v -e '.*aa.*' -e 'bb.*'; echo \$?" \ + "1\n" \ + "" \ + " aa bb cc\n" + # -r on symlink to dir should recurse into dir mkdir -p grep.testdir/foo echo bar > grep.testdir/foo/file |