Signed-off-by: Nguyễn Thái Ngọc Duy <pclo...@gmail.com>
---
 Documentation/gitignore.txt        | 19 +++++++++++++++++++
 attr.c                             |  4 +++-
 dir.c                              |  4 +++-
 t/t0003-attributes.sh              | 38 ++++++++++++++++++++++++++++++++++++++
 t/t3001-ls-files-others-exclude.sh | 19 +++++++++++++++++++
 5 files changed, 82 insertions(+), 2 deletions(-)

diff --git a/Documentation/gitignore.txt b/Documentation/gitignore.txt
index 96639e0..5a9c9f7 100644
--- a/Documentation/gitignore.txt
+++ b/Documentation/gitignore.txt
@@ -104,6 +104,25 @@ PATTERN FORMAT
    For example, "/{asterisk}.c" matches "cat-file.c" but not
    "mozilla-sha1/sha1.c".
 
+Two consecutive asterisks ("`**`") in patterns matched against
+full pathname may have special meaning:
+
+ - A leading "`**`" followed by a slash means match in all
+   directories. For example, "`**/foo`" matches file or directory
+   "`foo`" anywhere, the same as pattern "`foo`". "**/foo/bar"
+   matches file or directory "`bar`" anywhere that is directly
+   under directory "`foo`".
+
+ - A trailing "/**" matches everything inside. For example,
+   "abc/**" is equivalent to "`/abc/`".
+
+ - A slash followed by two consecutive asterisks then a slash
+   matches zero or more directories. For example, "`a/**/b`"
+   matches "`a/b`", "`a/x/b`", "`a/x/y/b`" and so on.
+
+ - Consecutive asterisks otherwise are treated like normal
+   asterisk wildcards.
+
 NOTES
 -----
 
diff --git a/attr.c b/attr.c
index 887a9ae..e85e5ed 100644
--- a/attr.c
+++ b/attr.c
@@ -12,6 +12,7 @@
 #include "exec_cmd.h"
 #include "attr.h"
 #include "dir.h"
+#include "wildmatch.h"
 
 const char git_attr__true[] = "(builtin)true";
 const char git_attr__false[] = "\0(builtin)false";
@@ -666,7 +667,8 @@ static int path_matches(const char *pathname, int pathlen,
                return 0;
        if (baselen != 0)
                baselen++;
-       return fnmatch_icase(pattern, pathname + baselen, FNM_PATHNAME) == 0;
+       return wildmatch(pattern, pathname + baselen,
+                        ignore_case ? FNM_CASEFOLD : 0);
 }
 
 static int macroexpand_one(int attr_nr, int rem);
diff --git a/dir.c b/dir.c
index 4868339..dc721c0 100644
--- a/dir.c
+++ b/dir.c
@@ -8,6 +8,7 @@
 #include "cache.h"
 #include "dir.h"
 #include "refs.h"
+#include "wildmatch.h"
 
 struct path_simplify {
        int len;
@@ -575,7 +576,8 @@ int excluded_from_list(const char *pathname,
                        namelen -= prefix;
                }
 
-               if (!namelen || !fnmatch_icase(exclude, name, FNM_PATHNAME))
+               if (!namelen ||
+                   wildmatch(exclude, name, ignore_case ? FNM_CASEFOLD : 0))
                        return to_exclude;
        }
        return -1; /* undecided */
diff --git a/t/t0003-attributes.sh b/t/t0003-attributes.sh
index febc45c..67a5694 100755
--- a/t/t0003-attributes.sh
+++ b/t/t0003-attributes.sh
@@ -232,4 +232,42 @@ test_expect_success 'bare repository: test 
info/attributes' '
        attr_check subdir/a/i unspecified
 '
 
+test_expect_success '"**" test' '
+       cd .. &&
+       echo "**/f foo=bar" >.gitattributes &&
+       cat <<\EOF >expect &&
+f: foo: bar
+a/f: foo: bar
+a/b/f: foo: bar
+a/b/c/f: foo: bar
+EOF
+       git check-attr foo -- "f" >actual 2>err &&
+       git check-attr foo -- "a/f" >>actual 2>>err &&
+       git check-attr foo -- "a/b/f" >>actual 2>>err &&
+       git check-attr foo -- "a/b/c/f" >>actual 2>>err &&
+       test_cmp expect actual &&
+       test_line_count = 0 err
+'
+
+test_expect_success '"**" with no slashes test' '
+       echo "a**f foo=bar" >.gitattributes &&
+       git check-attr foo -- "f" >actual &&
+       cat <<\EOF >expect &&
+f: foo: unspecified
+af: foo: bar
+axf: foo: bar
+a/f: foo: unspecified
+a/b/f: foo: unspecified
+a/b/c/f: foo: unspecified
+EOF
+       git check-attr foo -- "f" >actual 2>err &&
+       git check-attr foo -- "af" >>actual 2>err &&
+       git check-attr foo -- "axf" >>actual 2>err &&
+       git check-attr foo -- "a/f" >>actual 2>>err &&
+       git check-attr foo -- "a/b/f" >>actual 2>>err &&
+       git check-attr foo -- "a/b/c/f" >>actual 2>>err &&
+       test_cmp expect actual &&
+       test_line_count = 0 err
+'
+
 test_done
diff --git a/t/t3001-ls-files-others-exclude.sh 
b/t/t3001-ls-files-others-exclude.sh
index c8fe978..278315d 100755
--- a/t/t3001-ls-files-others-exclude.sh
+++ b/t/t3001-ls-files-others-exclude.sh
@@ -214,4 +214,23 @@ test_expect_success 'subdirectory ignore (l1)' '
        test_cmp expect actual
 '
 
+
+test_expect_success 'ls-files with "**" patterns' '
+       cat <<\EOF >expect &&
+a.1
+one/a.1
+one/two/a.1
+three/a.1
+EOF
+       git ls-files -o -i --exclude "**/a.1" >actual
+       test_cmp expect actual
+'
+
+
+test_expect_success 'ls-files with "**" patterns and no slashes' '
+       : >expect &&
+       git ls-files -o -i --exclude "one**a.1" >actual &&
+       test_cmp expect actual
+'
+
 test_done
-- 
1.8.0.rc0.29.g1fdd78f

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