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[PATCH] exclude: fix a bug in prefix comparison optimization

From
Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Date
Oct 14, 2012, 11:35 UTC
Message-ID
<1350214522-3242-1-git-send-email-pclouds@gmail.com>

When "namelen" becomes zero at this stage, we have matched the fixed part, but whether it actually matches the pattern still depends on the pattern in "exclude". As demonstrated in t3001, path "three/a.3" exists and it matches the "three/a.3" part in pattern "three/a.3[abc]", but that does not mean a true match.

Don't be too optimistic and let fnmatch() do the job.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 dir.c                              | 2 +-
 t/t3001-ls-files-others-exclude.sh | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/dir.c b/dir.c
index 4868339..90bf3a4 100644
--- a/dir.c
+++ b/dir.c
@@ -575,7 +575,7 @@ int excluded_from_list(const char *pathname,
 			namelen -= prefix;
 		}
 
-		if (!namelen || !fnmatch_icase(exclude, name, FNM_PATHNAME))
+		if (!fnmatch_icase(exclude, name, FNM_PATHNAME))
 			return to_exclude;
 	}
 	return -1; /* undecided */
diff --git a/t/t3001-ls-files-others-exclude.sh b/t/t3001-ls-files-others-exclude.sh
index c8fe978..dc2f045 100755
--- a/t/t3001-ls-files-others-exclude.sh
+++ b/t/t3001-ls-files-others-exclude.sh
@@ -214,4 +214,10 @@ test_expect_success 'subdirectory ignore (l1)' '
 	test_cmp expect actual
 '
 
+test_expect_success 'pattern matches prefix completely' '
+	: >expect &&
+	git ls-files -i -o --exclude "/three/a.3[abc]" >actual &&
+	test_cmp expect actual
+'
+
 test_done
-- 
1.8.0.rc2.11.g2b79d01
Next: Junio C Hamano
Message 1 of 5 in “exclude: fix a bug in prefix comparison optimization”
  1. exclude: fix a bug in prefix comparison optimizationNguyễn Thái Ngọc Duy, Oct 14, 2012
  2. Junio C HamanoOct 14, 2012
  3. Junio C HamanoOct 14, 2012
  4. Nguyen Thai Ngoc DuyOct 15, 2012
  5. Junio C HamanoOct 15, 2012

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