Merge branch 'maint-1.7.11' into maint

* maint-1.7.11:
  Almost 1.7.11.6
  gitweb: URL-decode $my_url/$my_uri when stripping PATH_INFO
  rebase -i: use full onto sha1 in reflog
  sh-setup: protect from exported IFS
  receive-pack: do not leak output from auto-gc to standard output
  t/t5400: demonstrate breakage caused by informational message from prune
  setup: clarify error messages for file/revisions ambiguity
  send-email: improve RFC2047 quote parsing
  fsck: detect null sha1 in tree entries
  do not write null sha1s to on-disk index
  diff: do not use null sha1 as a sentinel value

4 files changed, 14 insertions, 8 deletions

diff --git a/builtin/blame.c b/builtin/blame.c
index 0d50273ce9..f2c48ef5af 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -110,6 +110,7 @@ static int diff_hunks(mmfile_t *file_a, mmfile_t *file_b, long ctxlen,
 int textconv_object(const char *path,
 		    unsigned mode,
 		    const unsigned char *sha1,
+		    int sha1_valid,
 		    char **buf,
 		    unsigned long *buf_size)
 {
@@ -117,7 +118,7 @@ int textconv_object(const char *path,
 	struct userdiff_driver *textconv;
 
 	df = alloc_filespec(path);
-	fill_filespec(df, sha1, mode);
+	fill_filespec(df, sha1, sha1_valid, mode);
 	textconv = get_textconv(df);
 	if (!textconv) {
 		free_filespec(df);
@@ -142,7 +143,7 @@ static void fill_origin_blob(struct diff_options *opt,
 
 		num_read_blob++;
 		if (DIFF_OPT_TST(opt, ALLOW_TEXTCONV) &&
-		    textconv_object(o->path, o->mode, o->blob_sha1, &file->ptr, &file_size))
+		    textconv_object(o->path, o->mode, o->blob_sha1, 1, &file->ptr, &file_size))
 			;
 		else
 			file->ptr = read_sha1_file(o->blob_sha1, &type, &file_size);
@@ -2123,7 +2124,7 @@ static struct commit *fake_working_tree_commit(struct diff_options *opt,
 		switch (st.st_mode & S_IFMT) {
 		case S_IFREG:
 			if (DIFF_OPT_TST(opt, ALLOW_TEXTCONV) &&
-			    textconv_object(read_from, mode, null_sha1, &buf_ptr, &buf_len))
+			    textconv_object(read_from, mode, null_sha1, 0, &buf_ptr, &buf_len))
 				strbuf_attach(&buf, buf_ptr, buf_len, buf_len + 1);
 			else if (strbuf_read_file(&buf, read_from, st.st_size) != st.st_size)
 				die_errno("cannot open or read '%s'", read_from);
@@ -2516,7 +2517,7 @@ parse_done:
 			die("no such path %s in %s", path, final_commit_name);
 
 		if (DIFF_OPT_TST(&sb.revs->diffopt, ALLOW_TEXTCONV) &&
-		    textconv_object(path, o->mode, o->blob_sha1, (char **) &sb.final_buf,
+		    textconv_object(path, o->mode, o->blob_sha1, 1, (char **) &sb.final_buf,
 				    &sb.final_buf_size))
 			;
 		else
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index af74e775a1..0eca2d7bd0 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -146,7 +146,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
 			die("git cat-file --textconv %s: <object> must be <sha1:path>",
 			    obj_name);
 
-		if (!textconv_object(obj_context.path, obj_context.mode, sha1, &buf, &size))
+		if (!textconv_object(obj_context.path, obj_context.mode, sha1, 1, &buf, &size))
 			die("git cat-file --textconv: unable to run textconv on %s",
 			    obj_name);
 		break;
diff --git a/builtin/diff.c b/builtin/diff.c
index da8f6aac2b..bf72298752 100644
--- a/builtin/diff.c
+++ b/builtin/diff.c
@@ -29,6 +29,8 @@ static void stuff_change(struct diff_options *opt,
 			 unsigned old_mode, unsigned new_mode,
 			 const unsigned char *old_sha1,
 			 const unsigned char *new_sha1,
+			 int old_sha1_valid,
+			 int new_sha1_valid,
 			 const char *old_name,
 			 const char *new_name)
 {
@@ -54,8 +56,8 @@ static void stuff_change(struct diff_options *opt,
 
 	one = alloc_filespec(old_name);
 	two = alloc_filespec(new_name);
-	fill_filespec(one, old_sha1, old_mode);
-	fill_filespec(two, new_sha1, new_mode);
+	fill_filespec(one, old_sha1, old_sha1_valid, old_mode);
+	fill_filespec(two, new_sha1, new_sha1_valid, new_mode);
 
 	diff_queue(&diff_queued_diff, one, two);
 }
@@ -84,6 +86,7 @@ static int builtin_diff_b_f(struct rev_info *revs,
 	stuff_change(&revs->diffopt,
 		     blob[0].mode, canon_mode(st.st_mode),
 		     blob[0].sha1, null_sha1,
+		     1, 0,
 		     path, path);
 	diffcore_std(&revs->diffopt);
 	diff_flush(&revs->diffopt);
@@ -108,6 +111,7 @@ static int builtin_diff_blobs(struct rev_info *revs,
 	stuff_change(&revs->diffopt,
 		     blob[0].mode, blob[1].mode,
 		     blob[0].sha1, blob[1].sha1,
+		     1, 1,
 		     blob[0].name, blob[1].name);
 	diffcore_std(&revs->diffopt);
 	diff_flush(&revs->diffopt);
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 0afb8b2896..3f05d971ec 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -977,7 +977,8 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
 			const char *argv_gc_auto[] = {
 				"gc", "--auto", "--quiet", NULL,
 			};
-			run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
+			int opt = RUN_GIT_CMD | RUN_COMMAND_STDOUT_TO_STDERR;
+			run_command_v_opt(argv_gc_auto, opt);
 		}
 		if (auto_update_server_info)
 			update_server_info(0);