[PATCH] Support symlinks in git-ls-files --others.

[Junio C Hamano <junkio@cox.net>]

It is kind of surprising that this was missed in the last round,
but the work tree scanner in git-ls-files is still deliberately
ignoring symlinks.  This patch fixes it.

This depends on the test suite infrastructure I sent in earlier.

Signed-off-by: Junio C Hamano <junkio@cox.net>
---

Petr, I am not CCing Linus and you know what I mean by it ;-).

cache.h             |    1 +
ls-files.c          |    8 +++++---
t/t0400-ls-files.sh |   29 +++++++++++++++++++++++++++++
3 files changed, 35 insertions(+), 3 deletions(-)
t/t0400-ls-files.sh (. --> 100755)

--- a/cache.h
+++ b/cache.h
@@ -27,6 +27,7 @@
 #define DT_UNKNOWN	0
 #define DT_DIR		1
 #define DT_REG		2
+#define DT_LNK		3
 #define DTYPE(de)	DT_UNKNOWN
 #endif
 
--- a/ls-files.c
+++ b/ls-files.c
@@ -109,8 +109,9 @@
 
 /*
  * Read a directory tree. We currently ignore anything but
- * directories and regular files. That's because git doesn't
- * handle them at all yet. Maybe that will change some day.
+ * directories, regular files and symlinks. That's because git
+ * doesn't handle them at all yet. Maybe that will change some
+ * day.
  *
  * Also, we currently ignore all names starting with a dot.
  * That likely will not change.
@@ -141,7 +142,7 @@
 			case DT_UNKNOWN:
 				if (lstat(fullname, &st))
 					continue;
-				if (S_ISREG(st.st_mode))
+				if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
 					break;
 				if (!S_ISDIR(st.st_mode))
 					continue;
@@ -152,6 +153,7 @@
 					       baselen + len + 1);
 				continue;
 			case DT_REG:
+			case DT_LNK:
 				break;
 			}
 			add_name(fullname, baselen + len);
--- a/t/t0400-ls-files.sh
+++ b/t/t0400-ls-files.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+
+. ./test-lib.sh
+test_description "$@" 'git-ls-files test.
+
+This test runs git-ls-files --others with the following on the
+filesystem.
+
+    path0       - a file
+    path1	- a symlink
+    path2/file2 - a file in a directory
+'
+
+date >path0
+ln -s xyzzy path1
+mkdir path2
+date >path2/file2
+git-ls-files --others >.output
+cat >.expected <<EOF
+path0
+path1
+path2/file2
+EOF
+
+test_expect_success 'diff .output .expected'
+test_done
------------------------------------------------

Compilation finished at Thu May 12 00:43:56