From: Junio C Hamano <junkio@cox.net>
Date: Fri, 3 Mar 2006 05:15:56 +0000 (-0800)
Subject: Merge branch 'fk/blame' into next
X-Git-Tag: v1.3.0-rc1~54^2~5
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/262cc77dab3d899193f222230f03e11b37c604cb?hp=fc675b8cd5ac102651c322e05d27c4fa7609f7a6

Merge branch 'fk/blame' into next

* fk/blame:
git-blame, take 2
Merge part of 'lt/rev-list' into 'fk/blame'
---

diff --git a/Documentation/git-am.txt b/Documentation/git-am.txt
index 02cabc935e..910457d3b3 100644
--- a/Documentation/git-am.txt
+++ b/Documentation/git-am.txt
@@ -9,7 +9,8 @@ git-am - Apply a series of patches in a mailbox
 SYNOPSIS
 --------
 [verse]
-'git-am' [--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way] <mbox>...
+'git-am' [--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way]
+         [--interactive] [--whitespace=<option>] <mbox>...
 'git-am' [--skip | --resolved]
 
 DESCRIPTION
@@ -46,6 +47,10 @@ OPTIONS
 	Skip the current patch.  This is only meaningful when
 	restarting an aborted patch.
 
+--whitespace=<option>::
+	This flag is passed to the `git-apply` program that applies
+	the patch.
+
 --interactive::
 	Run interactively, just like git-applymbox.
 
@@ -80,7 +85,7 @@ names.
 
 SEE ALSO
 --------
-gitlink:git-applymbox[1], gitlink:git-applypatch[1].
+gitlink:git-applymbox[1], gitlink:git-applypatch[1], gitlink:git-apply[1].
 
 
 Author
diff --git a/Documentation/git-apply.txt b/Documentation/git-apply.txt
index 75076b6121..1c64a1aa82 100644
--- a/Documentation/git-apply.txt
+++ b/Documentation/git-apply.txt
@@ -11,6 +11,7 @@ SYNOPSIS
 [verse]
 'git-apply' [--stat] [--numstat] [--summary] [--check] [--index] [--apply]
 	  [--no-add] [--index-info] [--allow-binary-replacement] [-z] [-pNUM]
+	  [--whitespace=<nowarn|warn|error|error-all|strip>]
 	  [<patch>...]
 
 DESCRIPTION
@@ -97,6 +98,35 @@ OPTIONS
 	result.  This allows binary files to be patched in a
 	very limited way.
 
+--whitespace=<option>::
+	When applying a patch, detect a new or modified line
+	that ends with trailing whitespaces (this includes a
+	line that solely consists of whitespaces).  By default,
+	the command outputs warning messages and applies the
+	patch.
+	When `git-apply` is used for statistics and not applying a
+	patch, it defaults to `nowarn`.
+	You can use different `<option>` to control this
+	behaviour:
++
+* `nowarn` turns off the trailing whitespace warning.
+* `warn` outputs warnings for a few such errors, but applies the
+  patch (default).
+* `error` outputs warnings for a few such errors, and refuses
+  to apply the patch.
+* `error-all` is similar to `error` but shows all errors.
+* `strip` outputs warnings for a few such errors, strips out the
+  trailing whitespaces and applies the patch.
+
+
+Configuration
+-------------
+
+apply.whitespace::
+	When no `--whitespace` flag is given from the command
+	line, this configuration item is used as the default.
+
+
 Author
 ------
 Written by Linus Torvalds <torvalds@osdl.org>
diff --git a/Documentation/git-checkout-index.txt b/Documentation/git-checkout-index.txt
index 2a1e526c6a..b0b65889ac 100644
--- a/Documentation/git-checkout-index.txt
+++ b/Documentation/git-checkout-index.txt
@@ -10,7 +10,9 @@ SYNOPSIS
 --------
 [verse]
 'git-checkout-index' [-u] [-q] [-a] [-f] [-n] [--prefix=<string>]
-		   [--stage=<number>] [--] <file>...
+		   [--stage=<number>]
+		   [-z] [--stdin]
+		   [--] [<file>]\*
 
 DESCRIPTION
 -----------
@@ -45,6 +47,15 @@ OPTIONS
 	Instead of checking out unmerged entries, copy out the
 	files from named stage.  <number> must be between 1 and 3.
 
+--stdin::
+	Instead of taking list of paths from the command line,
+	read list of paths from the standard input.  Paths are
+	separated by LF (i.e. one path per line) by default.
+
+-z::
+	Only meaningful with `--stdin`; paths are separated with
+	NUL character instead of LF.
+
 --::
 	Do not interpret any more arguments as options.
 
@@ -64,7 +75,12 @@ $ find . -name '*.h' -print0 | xargs -0 git-checkout-index -f --
 
 which will force all existing `*.h` files to be replaced with their
 cached copies. If an empty command line implied "all", then this would
-force-refresh everything in the index, which was not the point.
+force-refresh everything in the index, which was not the point.  But
+since git-checkout-index accepts --stdin it would be faster to use:
+
+----------------
+$ find . -name '*.h' -print0 | git-checkout-index -f -z --stdin
+----------------
 
 The `--` is just a good idea when you know the rest will be filenames;
 it will prevent problems with a filename of, for example,  `-a`.
diff --git a/Documentation/git-cvsserver.txt b/Documentation/git-cvsserver.txt
index 88f07ff15d..19c9c51cff 100644
--- a/Documentation/git-cvsserver.txt
+++ b/Documentation/git-cvsserver.txt
@@ -54,6 +54,30 @@ INSTALLATION
    of branches in git).
      $ cvs co -d mylocaldir master
 
+Eclipse CVS Client Notes
+------------------------
+
+To get a checkout with the Eclipse CVS client:
+
+1. Create a new project from CVS checkout, giving it repository and module
+2. Context Menu->Team->Share Project...
+3. Enter the repository and module information again and click Finish
+4. The Synchronize view appears. Untick  "launch commit wizard" to avoid
+committing the .project file, and select HEAD as the tag to synchronize to.
+Update all incoming changes.
+
+Note that most versions of Eclipse ignore CVS_SERVER (which you can set in
+the Preferences->Team->CVS->ExtConnection pane), so you may have to
+rename, alias or symlink git-cvsserver to 'cvs' on the server.
+
+Clients known to work
+---------------------
+
+CVS 1.12.9 on Debian
+CVS 1.11.17 on MacOSX (from Fink package)
+Eclipse 3.0, 3.1.2 on MacOSX (see Eclipse CVS Client Notes)
+TortoiseCVS
+
 Operations supported
 --------------------
 
diff --git a/Documentation/git-read-tree.txt b/Documentation/git-read-tree.txt
index 6fbd6d9368..844cfda8d2 100644
--- a/Documentation/git-read-tree.txt
+++ b/Documentation/git-read-tree.txt
@@ -8,7 +8,7 @@ git-read-tree - Reads tree information into the index
 
 SYNOPSIS
 --------
-'git-read-tree' (<tree-ish> | [[-m | --reset] [-u | -i]] <tree-ish1> [<tree-ish2> [<tree-ish3>]])
+'git-read-tree' (<tree-ish> | [[-m [--aggressive]| --reset] [-u | -i]] <tree-ish1> [<tree-ish2> [<tree-ish3>]])
 
 
 DESCRIPTION
@@ -50,6 +50,19 @@ OPTIONS
 	trees that are not directly related to the current
 	working tree status into a temporary index file.
 
+--aggressive::
+	Usually a three-way merge by `git-read-tree` resolves
+	the merge for really trivial cases and leaves other
+	cases unresolved in the index, so that Porcelains can
+	implement different merge policies.  This flag makes the
+	command to resolve a few more cases internally:
++
+* when one side removes a path and the other side leaves the path
+  unmodified.  The resolution is to remove that path.
+* when both sides remove a path.  The resolution is to remove that path.
+* when both sides adds a path identically.  The resolution
+  is to add that path.
+
 <tree-ish#>::
 	The id of the tree object(s) to be read/merged.
 
diff --git a/Documentation/git-rev-list.txt b/Documentation/git-rev-list.txt
index 5b306d6593..8255ae1bce 100644
--- a/Documentation/git-rev-list.txt
+++ b/Documentation/git-rev-list.txt
@@ -18,7 +18,7 @@ SYNOPSIS
 	     [ \--all ]
 	     [ \--topo-order ]
 	     [ \--parents ]
-	     [ \--objects [ \--unpacked ] ]
+	     [ [\--objects | \--objects-edge] [ \--unpacked ] ]
 	     [ \--pretty | \--header ]
 	     [ \--bisect ]
 	     <commit>... [ \-- <paths>... ]
@@ -53,6 +53,14 @@ OPTIONS
 	which I need to download if I have the commit object 'bar', but
 	not 'foo'".
 
+--objects-edge::
+	Similar to `--objects`, but also print the IDs of
+	excluded commits refixed with a `-` character.  This is
+	used by `git-pack-objects` to build 'thin' pack, which
+	records objects in deltified form based on objects
+	contained in these excluded commits to reduce network
+	traffic.
+
 --unpacked::
 	Only useful with `--objects`; print the object IDs that
 	are not in packs.
diff --git a/Documentation/git-svnimport.txt b/Documentation/git-svnimport.txt
index 5c543d5d1b..a1588138ea 100644
--- a/Documentation/git-svnimport.txt
+++ b/Documentation/git-svnimport.txt
@@ -10,10 +10,11 @@ git-svnimport - Import a SVN repository into git
 SYNOPSIS
 --------
 'git-svnimport' [ -o <branch-for-HEAD> ] [ -h ] [ -v ] [ -d | -D ]
-			[ -C <GIT_repository> ] [ -i ] [ -u ] [-l limit_rev]
-			[ -b branch_subdir ] [ -T trunk_subdir ] [ -t tag_subdir ]
-			[ -s start_chg ] [ -m ] [ -M regex ]
-			<SVN_repository_URL> [ <path> ]
+		[ -C <GIT_repository> ] [ -i ] [ -u ] [-l limit_rev]
+		[ -b branch_subdir ] [ -T trunk_subdir ] [ -t tag_subdir ]
+		[ -s start_chg ] [ -m ] [ -r ] [ -M regex ]
+		[ -I <ignorefile_name> ] [ -A <author_file> ]
+		<SVN_repository_URL> [ <path> ]
 
 
 DESCRIPTION
@@ -65,6 +66,27 @@ When importing incrementally, you might need to edit the .git/svn2git file.
 	Prepend 'rX: ' to commit messages, where X is the imported
 	subversion revision.
 
+-I <ignorefile_name>::
+	Import the svn:ignore directory property to files with this
+	name in each directory. (The Subversion and GIT ignore
+	syntaxes are similar enough that using the Subversion patterns
+	directly with "-I .gitignore" will almost always just work.)
+
+-A <author_file>::
+	Read a file with lines on the form
+
+	  username = User's Full Name <email@addr.es>
+
+	and use "User's Full Name <email@addr.es>" as the GIT
+	author and committer for Subversion commits made by
+	"username". If encountering a commit made by a user not in the
+	list, abort.
+
+	For convenience, this data is saved to $GIT_DIR/svn-authors
+	each time the -A option is provided, and read from that same
+	file each time git-svnimport is run with an existing GIT
+	repository without -A.
+
 -m::
 	Attempt to detect merges based on the commit message. This option
 	will enable default regexes that try to capture the name source
diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 1056b7c817..d6d1ae0338 100755
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -7,8 +7,11 @@ DEF_VER=v1.2.GIT
 # (included in release tarballs), then default
 if VN=$(git-describe --abbrev=4 HEAD 2>/dev/null); then
 	VN=$(echo "$VN" | sed -e 's/-/./g');
-else
+elif test -f version
+then
 	VN=$(cat version) || VN="$DEF_VER"
+else
+	VN="$DEF_VER"
 fi
 
 VN=$(expr "$VN" : v*'\(.*\)')
diff --git a/Makefile b/Makefile
index b67d1ab565..b6d8804d4b 100644
--- a/Makefile
+++ b/Makefile
@@ -196,7 +196,8 @@ LIB_H = \
 
 DIFF_OBJS = \
 	diff.o diffcore-break.o diffcore-order.o diffcore-pathspec.o \
-	diffcore-pickaxe.o diffcore-rename.o tree-diff.o combine-diff.o
+	diffcore-pickaxe.o diffcore-rename.o tree-diff.o combine-diff.o \
+	diffcore-delta.o
 
 LIB_OBJS = \
 	blob.o commit.o connect.o count-delta.o csum-file.o \
@@ -223,11 +224,15 @@ ifeq ($(uname_S),Darwin)
 	NEEDS_SSL_WITH_CRYPTO = YesPlease
 	NEEDS_LIBICONV = YesPlease
 	## fink
-	ALL_CFLAGS += -I/sw/include
-	ALL_LDFLAGS += -L/sw/lib
+	ifeq ($(shell test -d /sw/lib && echo y),y)
+		ALL_CFLAGS += -I/sw/include
+		ALL_LDFLAGS += -L/sw/lib
+	endif
 	## darwinports
-	ALL_CFLAGS += -I/opt/local/include
-	ALL_LDFLAGS += -L/opt/local/lib
+	ifeq ($(shell test -d /opt/local/lib && echo y),y)
+		ALL_CFLAGS += -I/opt/local/include
+		ALL_LDFLAGS += -L/opt/local/lib
+	endif
 endif
 ifeq ($(uname_S),SunOS)
 	NEEDS_SOCKET = YesPlease
diff --git a/apply.c b/apply.c
index 244718ca13..c369966867 100644
--- a/apply.c
+++ b/apply.c
@@ -32,7 +32,57 @@ static int no_add = 0;
 static int show_index_info = 0;
 static int line_termination = '\n';
 static const char apply_usage[] =
-"git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [-z] [-pNUM] <patch>...";
+"git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [-z] [-pNUM] [--whitespace=<nowarn|warn|error|error-all|strip>] <patch>...";
+
+static enum whitespace_eol {
+	nowarn_whitespace,
+	warn_on_whitespace,
+	error_on_whitespace,
+	strip_whitespace,
+} new_whitespace = warn_on_whitespace;
+static int whitespace_error = 0;
+static int squelch_whitespace_errors = 5;
+static int applied_after_stripping = 0;
+static const char *patch_input_file = NULL;
+
+static void parse_whitespace_option(const char *option)
+{
+	if (!option) {
+		new_whitespace = warn_on_whitespace;
+		return;
+	}
+	if (!strcmp(option, "warn")) {
+		new_whitespace = warn_on_whitespace;
+		return;
+	}
+	if (!strcmp(option, "nowarn")) {
+		new_whitespace = nowarn_whitespace;
+		return;
+	}
+	if (!strcmp(option, "error")) {
+		new_whitespace = error_on_whitespace;
+		return;
+	}
+	if (!strcmp(option, "error-all")) {
+		new_whitespace = error_on_whitespace;
+		squelch_whitespace_errors = 0;
+		return;
+	}
+	if (!strcmp(option, "strip")) {
+		new_whitespace = strip_whitespace;
+		return;
+	}
+	die("unrecognized whitespace option '%s'", option);
+}
+
+static void set_default_whitespace_mode(const char *whitespace_option)
+{
+	if (!whitespace_option && !apply_default_whitespace) {
+		new_whitespace = (apply
+				  ? warn_on_whitespace
+				  : nowarn_whitespace);
+	}
+}
 
 /*
  * For "diff-stat" like behaviour, we keep track of the biggest change
@@ -815,6 +865,25 @@ static int parse_fragment(char *line, unsigned long size, struct patch *patch, s
 			oldlines--;
 			break;
 		case '+':
+			/*
+			 * We know len is at least two, since we have a '+' and
+			 * we checked that the last character was a '\n' above.
+			 * That is, an addition of an empty line would check
+			 * the '+' here.  Sneaky...
+			 */
+			if ((new_whitespace != nowarn_whitespace) &&
+			    isspace(line[len-2])) {
+				whitespace_error++;
+				if (squelch_whitespace_errors &&
+				    squelch_whitespace_errors <
+				    whitespace_error)
+					;
+				else {
+					fprintf(stderr, "Adds trailing whitespace.\n%s:%d:%.*s\n",
+						patch_input_file,
+						linenr, len-2, line+1);
+				}
+			}
 			added++;
 			newlines--;
 			break;
@@ -1092,6 +1161,28 @@ struct buffer_desc {
 	unsigned long alloc;
 };
 
+static int apply_line(char *output, const char *patch, int plen)
+{
+	/* plen is number of bytes to be copied from patch,
+	 * starting at patch+1 (patch[0] is '+').  Typically
+	 * patch[plen] is '\n'.
+	 */
+	int add_nl_to_tail = 0;
+	if ((new_whitespace == strip_whitespace) &&
+	    1 < plen && isspace(patch[plen-1])) {
+		if (patch[plen] == '\n')
+			add_nl_to_tail = 1;
+		plen--;
+		while (0 < plen && isspace(patch[plen]))
+			plen--;
+		applied_after_stripping++;
+	}
+	memcpy(output, patch + 1, plen);
+	if (add_nl_to_tail)
+		output[plen++] = '\n';
+	return plen;
+}
+
 static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag)
 {
 	char *buf = desc->buffer;
@@ -1127,10 +1218,9 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag)
 				break;
 		/* Fall-through for ' ' */
 		case '+':
-			if (*patch != '+' || !no_add) {
-				memcpy(new + newsize, patch + 1, plen);
-				newsize += plen;
-			}
+			if (*patch != '+' || !no_add)
+				newsize += apply_line(new + newsize, patch,
+						      plen);
 			break;
 		case '@': case '\\':
 			/* Ignore it, we already handled it */
@@ -1699,7 +1789,7 @@ static int use_patch(struct patch *p)
 	return 1;
 }
 
-static int apply_patch(int fd)
+static int apply_patch(int fd, const char *filename)
 {
 	int newfd;
 	unsigned long offset, size;
@@ -1707,6 +1797,7 @@ static int apply_patch(int fd)
 	struct patch *list = NULL, **listp = &list;
 	int skipped_patch = 0;
 
+	patch_input_file = filename;
 	if (!buffer)
 		return -1;
 	offset = 0;
@@ -1733,6 +1824,9 @@ static int apply_patch(int fd)
 	}
 
 	newfd = -1;
+	if (whitespace_error && (new_whitespace == error_on_whitespace))
+		apply = 0;
+
 	write_index = check_index && apply;
 	if (write_index)
 		newfd = hold_index_file_for_update(&cache_file, get_index_file());
@@ -1769,17 +1863,28 @@ static int apply_patch(int fd)
 	return 0;
 }
 
+static int git_apply_config(const char *var, const char *value)
+{
+	if (!strcmp(var, "apply.whitespace")) {
+		apply_default_whitespace = strdup(value);
+		return 0;
+	}
+	return git_default_config(var, value);
+}
+
+
 int main(int argc, char **argv)
 {
 	int i;
 	int read_stdin = 1;
+	const char *whitespace_option = NULL;
 
 	for (i = 1; i < argc; i++) {
 		const char *arg = argv[i];
 		int fd;
 
 		if (!strcmp(arg, "-")) {
-			apply_patch(0);
+			apply_patch(0, "<stdin>");
 			read_stdin = 0;
 			continue;
 		}
@@ -1839,11 +1944,18 @@ int main(int argc, char **argv)
 			line_termination = 0;
 			continue;
 		}
+		if (!strncmp(arg, "--whitespace=", 13)) {
+			whitespace_option = arg + 13;
+			parse_whitespace_option(arg + 13);
+			continue;
+		}
 
 		if (check_index && prefix_length < 0) {
 			prefix = setup_git_directory();
 			prefix_length = prefix ? strlen(prefix) : 0;
-			git_config(git_default_config);
+			git_config(git_apply_config);
+			if (!whitespace_option && apply_default_whitespace)
+				parse_whitespace_option(apply_default_whitespace);
 		}
 		if (0 < prefix_length)
 			arg = prefix_filename(prefix, prefix_length, arg);
@@ -1852,10 +1964,38 @@ int main(int argc, char **argv)
 		if (fd < 0)
 			usage(apply_usage);
 		read_stdin = 0;
-		apply_patch(fd);
+		set_default_whitespace_mode(whitespace_option);
+		apply_patch(fd, arg);
 		close(fd);
 	}
+	set_default_whitespace_mode(whitespace_option);
 	if (read_stdin)
-		apply_patch(0);
+		apply_patch(0, "<stdin>");
+	if (whitespace_error) {
+		if (squelch_whitespace_errors &&
+		    squelch_whitespace_errors < whitespace_error) {
+			int squelched =
+				whitespace_error - squelch_whitespace_errors;
+			fprintf(stderr, "warning: squelched %d whitespace error%s\n",
+				squelched,
+				squelched == 1 ? "" : "s");
+		}
+		if (new_whitespace == error_on_whitespace)
+			die("%d line%s add%s trailing whitespaces.",
+			    whitespace_error,
+			    whitespace_error == 1 ? "" : "s",
+			    whitespace_error == 1 ? "s" : "");
+		if (applied_after_stripping)
+			fprintf(stderr, "warning: %d line%s applied after"
+				" stripping trailing whitespaces.\n",
+				applied_after_stripping,
+				applied_after_stripping == 1 ? "" : "s");
+		else if (whitespace_error)
+			fprintf(stderr, "warning: %d line%s add%s trailing"
+				" whitespaces.\n",
+				whitespace_error,
+				whitespace_error == 1 ? "" : "s",
+				whitespace_error == 1 ? "s" : "");
+	}
 	return 0;
 }
diff --git a/cache.h b/cache.h
index 3af6b868e8..8dc1de16e4 100644
--- a/cache.h
+++ b/cache.h
@@ -161,11 +161,13 @@ extern int hold_index_file_for_update(struct cache_file *, const char *path);
 extern int commit_index_file(struct cache_file *);
 extern void rollback_index_file(struct cache_file *);
 
+/* Environment bits from configuration mechanism */
 extern int trust_executable_bit;
 extern int assume_unchanged;
 extern int only_use_symrefs;
 extern int diff_rename_limit_default;
 extern int shared_repository;
+extern const char *apply_default_whitespace;
 
 #define GIT_REPO_VERSION 0
 extern int repository_format_version;
diff --git a/cat-file.c b/cat-file.c
index 96d66b4304..1a613f3ee5 100644
--- a/cat-file.c
+++ b/cat-file.c
@@ -4,6 +4,92 @@
  * Copyright (C) Linus Torvalds, 2005
  */
 #include "cache.h"
+#include "exec_cmd.h"
+
+static void flush_buffer(const char *buf, unsigned long size)
+{
+	while (size > 0) {
+		long ret = xwrite(1, buf, size);
+		if (ret < 0) {
+			/* Ignore epipe */
+			if (errno == EPIPE)
+				break;
+			die("git-cat-file: %s", strerror(errno));
+		} else if (!ret) {
+			die("git-cat-file: disk full?");
+		}
+		size -= ret;
+		buf += ret;
+	}
+}
+
+static int pprint_tag(const unsigned char *sha1, const char *buf, unsigned long size)
+{
+	/* the parser in tag.c is useless here. */
+	const char *endp = buf + size;
+	const char *cp = buf;
+
+	while (cp < endp) {
+		char c = *cp++;
+		if (c != '\n')
+			continue;
+		if (7 <= endp - cp && !memcmp("tagger ", cp, 7)) {
+			const char *tagger = cp;
+
+			/* Found the tagger line.  Copy out the contents
+			 * of the buffer so far.
+			 */
+			flush_buffer(buf, cp - buf);
+
+			/*
+			 * Do something intelligent, like pretty-printing
+			 * the date.
+			 */
+			while (cp < endp) {
+				if (*cp++ == '\n') {
+					/* tagger to cp is a line
+					 * that has ident and time.
+					 */
+					const char *sp = tagger;
+					char *ep;
+					unsigned long date;
+					long tz;
+					while (sp < cp && *sp != '>')
+						sp++;
+					if (sp == cp) {
+						/* give up */
+						flush_buffer(tagger,
+							     cp - tagger);
+						break;
+					}
+					while (sp < cp &&
+					       !('0' <= *sp && *sp <= '9'))
+						sp++;
+					flush_buffer(tagger, sp - tagger);
+					date = strtoul(sp, &ep, 10);
+					tz = strtol(ep, NULL, 10);
+					sp = show_date(date, tz);
+					flush_buffer(sp, strlen(sp));
+					xwrite(1, "\n", 1);
+					break;
+				}
+			}
+			break;
+		}
+		if (cp < endp && *cp == '\n')
+			/* end of header */
+			break;
+	}
+	/* At this point, we have copied out the header up to the end of
+	 * the tagger line and cp points at one past \n.  It could be the
+	 * next header line after the tagger line, or it could be another
+	 * \n that marks the end of the headers.  We need to copy out the
+	 * remainder as is.
+	 */
+	if (cp < endp)
+		flush_buffer(cp, endp - cp);
+	return 0;
+}
 
 int main(int argc, char **argv)
 {
@@ -15,7 +101,7 @@ int main(int argc, char **argv)
 
 	setup_git_directory();
 	if (argc != 3 || get_sha1(argv[2], sha1))
-		usage("git-cat-file [-t|-s|-e|<type>] <sha1>");
+		usage("git-cat-file [-t|-s|-e|-p|<type>] <sha1>");
 
 	opt = 0;
 	if ( argv[1][0] == '-' ) {
@@ -43,6 +129,23 @@ int main(int argc, char **argv)
 	case 'e':
 		return !has_sha1_file(sha1);
 
+	case 'p':
+		if (get_sha1(argv[2], sha1) ||
+		    sha1_object_info(sha1, type, NULL))
+			die("Not a valid object name %s", argv[2]);
+
+		/* custom pretty-print here */
+		if (!strcmp(type, "tree"))
+			return execl_git_cmd("ls-tree", argv[2], NULL);
+
+		buf = read_sha1_file(sha1, type, &size);
+		if (!buf)
+			die("Cannot read object %s", argv[2]);
+		if (!strcmp(type, "tag"))
+			return pprint_tag(sha1, buf, size);
+
+		/* otherwise just spit out the data */
+		break;
 	case 0:
 		buf = read_object_with_reference(sha1, argv[1], &size, NULL);
 		break;
@@ -54,18 +157,6 @@ int main(int argc, char **argv)
 	if (!buf)
 		die("git-cat-file %s: bad file", argv[2]);
 
-	while (size > 0) {
-		long ret = xwrite(1, buf, size);
-		if (ret < 0) {
-			/* Ignore epipe */
-			if (errno == EPIPE)
-				break;
-			die("git-cat-file: %s", strerror(errno));
-		} else if (!ret) {
-			die("git-cat-file: disk full?");
-		}
-		size -= ret;
-		buf += ret;
-	}
+	flush_buffer(buf, size);
 	return 0;
 }
diff --git a/checkout-index.c b/checkout-index.c
index 957b4a86b0..f54c606414 100644
--- a/checkout-index.c
+++ b/checkout-index.c
@@ -22,6 +22,10 @@
  *
  *	find . -name '*.h' -print0 | xargs -0 git-checkout-index -f --
  *
+ * or:
+ *
+ *	find . -name '*.h' -print0 | git-checkout-index -f -z --stdin
+ *
  * which will force all existing *.h files to be replaced with
  * their cached copies. If an empty command line implied "all",
  * then this would force-refresh everything in the cache, which
@@ -33,6 +37,8 @@
  * but get used to it in scripting!).
  */
 #include "cache.h"
+#include "strbuf.h"
+#include "quote.h"
 
 static const char *prefix;
 static int prefix_length;
@@ -114,6 +120,8 @@ int main(int argc, char **argv)
 	int i;
 	int newfd = -1;
 	int all = 0;
+	int read_from_stdin = 0;
+	int line_termination = '\n';
 
 	prefix = setup_git_directory();
 	git_config(git_default_config);
@@ -156,6 +164,17 @@ int main(int argc, char **argv)
 				die("cannot open index.lock file.");
 			continue;
 		}
+		if (!strcmp(arg, "-z")) {
+			line_termination = 0;
+			continue;
+		}
+		if (!strcmp(arg, "--stdin")) {
+			if (i != argc - 1)
+				die("--stdin must be at the end");
+			read_from_stdin = 1;
+			i++; /* do not consider arg as a file name */
+			break;
+		}
 		if (!strncmp(arg, "--prefix=", 9)) {
 			state.base_dir = arg+9;
 			state.base_dir_len = strlen(state.base_dir);
@@ -191,9 +210,31 @@ int main(int argc, char **argv)
 
 		if (all)
 			die("git-checkout-index: don't mix '--all' and explicit filenames");
+		if (read_from_stdin)
+			die("git-checkout-index: don't mix '--stdin' and explicit filenames");
 		checkout_file(prefix_path(prefix, prefix_length, arg));
 	}
 
+	if (read_from_stdin) {
+		struct strbuf buf;
+		if (all)
+			die("git-checkout-index: don't mix '--all' and '--stdin'");
+		strbuf_init(&buf);
+		while (1) {
+			char *path_name;
+			read_line(&buf, stdin, line_termination);
+			if (buf.eof)
+				break;
+			if (line_termination && buf.buf[0] == '"')
+				path_name = unquote_c_style(buf.buf, NULL);
+			else
+				path_name = buf.buf;
+			checkout_file(prefix_path(prefix, prefix_length, path_name));
+			if (path_name != buf.buf)
+				free(path_name);
+		}
+	}
+
 	if (all)
 		checkout_all();
 
diff --git a/combine-diff.c b/combine-diff.c
index d812600d11..a23894d869 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -621,7 +621,8 @@ static void reuse_combine_diff(struct sline *sline, unsigned long cnt,
 }
 
 static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
-			   int dense, const char *header)
+			   int dense, const char *header,
+			   struct diff_options *opt)
 {
 	unsigned long size, cnt, lno;
 	char *result, *cp, *ep;
@@ -631,6 +632,7 @@ static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
 	char ourtmp_buf[TMPPATHLEN];
 	char *ourtmp = ourtmp_buf;
 	int working_tree_file = !memcmp(elem->sha1, null_sha1, 20);
+	int abbrev = opt->full_index ? 40 : DEFAULT_ABBREV;
 
 	/* Read the result of merge first */
 	if (!working_tree_file) {
@@ -724,7 +726,7 @@ static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
 
 		if (header) {
 			shown_header++;
-			puts(header);
+			printf("%s%c", header, opt->line_termination);
 		}
 		printf("diff --%s ", dense ? "cc" : "combined");
 		if (quote_c_style(elem->path, NULL, NULL, 0))
@@ -735,10 +737,10 @@ static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
 		printf("index ");
 		for (i = 0; i < num_parent; i++) {
 			abb = find_unique_abbrev(elem->parent[i].sha1,
-						 DEFAULT_ABBREV);
+						 abbrev);
 			printf("%s%s", i ? "," : "", abb);
 		}
-		abb = find_unique_abbrev(elem->sha1, DEFAULT_ABBREV);
+		abb = find_unique_abbrev(elem->sha1, abbrev);
 		printf("..%s\n", abb);
 
 		if (mode_differs) {
@@ -797,7 +799,7 @@ static void show_raw_diff(struct combine_diff_path *p, int num_parent, const cha
 		inter_name_termination = 0;
 
 	if (header)
-		puts(header);
+		printf("%s%c", header, line_termination);
 
 	for (i = 0; i < num_parent; i++) {
 		if (p->parent[i].mode)
@@ -862,7 +864,7 @@ int show_combined_diff(struct combine_diff_path *p,
 
 	default:
 	case DIFF_FORMAT_PATCH:
-		return show_patch_diff(p, num_parent, dense, header);
+		return show_patch_diff(p, num_parent, dense, header, opt);
 	}
 }
 
diff --git a/contrib/git-svn/git-svn.perl b/contrib/git-svn/git-svn.perl
index 0b7416526d..0e092c5d3f 100755
--- a/contrib/git-svn/git-svn.perl
+++ b/contrib/git-svn/git-svn.perl
@@ -34,13 +34,14 @@
 my $sha1 = qr/[a-f\d]{40}/;
 my $sha1_short = qr/[a-f\d]{6,40}/;
 my ($_revision,$_stdin,$_no_ignore_ext,$_no_stop_copy,$_help,$_rmdir,$_edit,
-	$_find_copies_harder, $_l, $_version);
+	$_find_copies_harder, $_l, $_version, $_upgrade);
 
 GetOptions(	'revision|r=s' => \$_revision,
 		'no-ignore-externals' => \$_no_ignore_ext,
 		'stdin|' => \$_stdin,
 		'edit|e' => \$_edit,
 		'rmdir' => \$_rmdir,
+		'upgrade' => \$_upgrade,
 		'help|H|h' => \$_help,
 		'find-copies-harder' => \$_find_copies_harder,
 		'l=i' => \$_l,
@@ -106,13 +107,18 @@ sub rebuild {
 	$SVN_URL = shift or undef;
 	my $repo_uuid;
 	my $newest_rev = 0;
+	if ($_upgrade) {
+		sys('git-update-ref',"refs/remotes/$GIT_SVN","$GIT_SVN-HEAD");
+	} else {
+		check_upgrade_needed();
+	}
 
 	my $pid = open(my $rev_list,'-|');
 	defined $pid or croak $!;
 	if ($pid == 0) {
-		exec("git-rev-list","$GIT_SVN-HEAD") or croak $!;
+		exec("git-rev-list","refs/remotes/$GIT_SVN") or croak $!;
 	}
-	my $first;
+	my $latest;
 	while (<$rev_list>) {
 		chomp;
 		my $c = $_;
@@ -132,18 +138,20 @@ sub rebuild {
 					"$c, $id\n";
 			}
 		}
+
+		# if we merged or otherwise started elsewhere, this is
+		# how we break out of it
+		next if (defined $repo_uuid && ($uuid ne $repo_uuid));
+		next if (defined $SVN_URL && ($url ne $SVN_URL));
+
 		print "r$rev = $c\n";
-		unless (defined $first) {
+		unless (defined $latest) {
 			if (!$SVN_URL && !$url) {
 				croak "SVN repository location required: $url\n";
 			}
 			$SVN_URL ||= $url;
-			$repo_uuid = setup_git_svn();
-			$first = $rev;
-		}
-		if ($uuid ne $repo_uuid) {
-			croak "Repository UUIDs do not match!\ngot: $uuid\n",
-						"expected: $repo_uuid\n";
+			$repo_uuid ||= setup_git_svn();
+			$latest = $rev;
 		}
 		assert_revision_eq_or_unknown($rev, $c);
 		sys('git-update-ref',"$GIT_SVN/revs/$rev",$c);
@@ -151,7 +159,7 @@ sub rebuild {
 	}
 	close $rev_list or croak $?;
 	if (!chdir $SVN_WC) {
-		my @svn_co = ('svn','co',"-r$first");
+		my @svn_co = ('svn','co',"-r$latest");
 		push @svn_co, '--ignore-externals' unless $_no_ignore_ext;
 		sys(@svn_co, $SVN_URL, $SVN_WC);
 		chdir $SVN_WC or croak $!;
@@ -168,6 +176,13 @@ sub rebuild {
 		exec('git-write-tree');
 	}
 	waitpid $pid, 0;
+
+	if ($_upgrade) {
+		print STDERR <<"";
+Keeping deprecated refs/head/$GIT_SVN-HEAD for now.  Please remove it
+when you have upgraded your tools and habits to use refs/remotes/$GIT_SVN
+
+	}
 }
 
 sub init {
@@ -180,6 +195,7 @@ sub init {
 
 sub fetch {
 	my (@parents) = @_;
+	check_upgrade_needed();
 	$SVN_URL ||= file_to_s("$GIT_DIR/$GIT_SVN/info/url");
 	my @log_args = -d $SVN_WC ? ($SVN_WC) : ($SVN_URL);
 	unless ($_revision) {
@@ -222,6 +238,7 @@ sub fetch {
 
 sub commit {
 	my (@commits) = @_;
+	check_upgrade_needed();
 	if ($_stdin || !@commits) {
 		print "Reading from stdin...\n";
 		@commits = ();
@@ -863,7 +880,7 @@ sub git_commit {
 	if ($commit !~ /^$sha1$/o) {
 		croak "Failed to commit, invalid sha1: $commit\n";
 	}
-	my @update_ref = ('git-update-ref',"refs/heads/$GIT_SVN-HEAD",$commit);
+	my @update_ref = ('git-update-ref',"refs/remotes/$GIT_SVN",$commit);
 	if (my $primary_parent = shift @exec_parents) {
 		push @update_ref, $primary_parent;
 	}
@@ -936,6 +953,28 @@ sub svn_check_ignore_externals {
 		$_no_ignore_ext = 1;
 	}
 }
+
+sub check_upgrade_needed {
+	my $old = eval {
+		my $pid = open my $child, '-|';
+		defined $pid or croak $!;
+		if ($pid == 0) {
+			close STDERR;
+			exec('git-rev-parse',"$GIT_SVN-HEAD") or croak $?;
+		}
+		my @ret = (<$child>);
+		close $child or croak $?;
+		die $? if $?; # just in case close didn't error out
+		return wantarray ? @ret : join('',@ret);
+	};
+	return unless $old;
+	my $head = eval { safe_qx('git-rev-parse',"refs/remotes/$GIT_SVN") };
+	if ($@ || !$head) {
+		print STDERR "Please run: $0 rebuild --upgrade\n";
+		exit 1;
+	}
+}
+
 __END__
 
 Data structures:
diff --git a/contrib/git-svn/git-svn.txt b/contrib/git-svn/git-svn.txt
index b4b7789dee..4102deb381 100644
--- a/contrib/git-svn/git-svn.txt
+++ b/contrib/git-svn/git-svn.txt
@@ -41,7 +41,12 @@ init::
 
 fetch::
 	Fetch unfetched revisions from the SVN_URL we are tracking.
-	refs/heads/git-svn-HEAD will be updated to the latest revision.
+	refs/heads/remotes/git-svn will be updated to the latest revision.
+
+	Note: You should never attempt to modify the remotes/git-svn branch
+	outside of git-svn.  Instead, create a branch from remotes/git-svn
+	and work on that branch.  Use the 'commit' command (see below)
+	to write git commits back to remotes/git-svn.
 
 commit::
 	Commit specified commit or tree objects to SVN.  This relies on
@@ -150,13 +155,13 @@ Tracking and contributing to an Subversion managed-project:
 # Fetch remote revisions::
 	git-svn fetch
 # Create your own branch to hack on::
-	git checkout -b my-branch git-svn-HEAD
+	git checkout -b my-branch remotes/git-svn
 # Commit only the git commits you want to SVN::
 	git-svn commit <tree-ish> [<tree-ish_2> ...]
 # Commit all the git commits from my-branch that don't exist in SVN::
-	git commit git-svn-HEAD..my-branch
+	git-svn commit remotes/git-svn..my-branch
 # Something is committed to SVN, pull the latest into your branch::
-	git-svn fetch && git pull . git-svn-HEAD
+	git-svn fetch && git pull . remotes/git-svn
 # Append svn:ignore settings to the default git exclude file:
 	git-svn show-ignore >> .git/info/exclude
 
@@ -179,7 +184,9 @@ SVN repositories via one git repository.  Simply set the GIT_SVN_ID
 environment variable to a name other other than "git-svn" (the default)
 and git-svn will ignore the contents of the $GIT_DIR/git-svn directory
 and instead do all of its work in $GIT_DIR/$GIT_SVN_ID for that
-invocation.
+invocation.  The interface branch will be remotes/$GIT_SVN_ID, instead of
+remotes/git-svn.  Any remotes/$GIT_SVN_ID branch should never be modified
+by the user outside of git-svn commands.
 
 ADDITIONAL FETCH ARGUMENTS
 --------------------------
diff --git a/contrib/git-svn/t/t0000-contrib-git-svn.sh b/contrib/git-svn/t/t0000-contrib-git-svn.sh
index 181dfe008b..80ad3573db 100644
--- a/contrib/git-svn/t/t0000-contrib-git-svn.sh
+++ b/contrib/git-svn/t/t0000-contrib-git-svn.sh
@@ -71,14 +71,14 @@ test_expect_success \
 
 
 name='try a deep --rmdir with a commit'
-git checkout -b mybranch git-svn-HEAD
+git checkout -b mybranch remotes/git-svn
 mv dir/a/b/c/d/e/file dir/file
 cp dir/file file
 git update-index --add --remove dir/a/b/c/d/e/file dir/file file
 git commit -m "$name"
 
 test_expect_success "$name" \
-    "git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch &&
+    "git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch &&
      test -d $SVN_TREE/dir && test ! -d $SVN_TREE/dir/a"
 
 
@@ -91,13 +91,13 @@ git update-index --add dir/file/file
 git commit -m "$name"
 
 test_expect_code 1 "$name" \
-    'git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch' \
+    'git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch' \
     || true
 
 
 name='detect node change from directory to file #1'
 rm -rf dir $GIT_DIR/index
-git checkout -b mybranch2 git-svn-HEAD
+git checkout -b mybranch2 remotes/git-svn
 mv bar/zzz zzz
 rm -rf bar
 mv zzz bar
@@ -106,13 +106,13 @@ git update-index --add -- bar
 git commit -m "$name"
 
 test_expect_code 1 "$name" \
-    'git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch2' \
+    'git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch2' \
     || true
 
 
 name='detect node change from file to directory #2'
 rm -f $GIT_DIR/index
-git checkout -b mybranch3 git-svn-HEAD
+git checkout -b mybranch3 remotes/git-svn
 rm bar/zzz
 git-update-index --remove bar/zzz
 mkdir bar/zzz
@@ -121,13 +121,13 @@ git-update-index --add bar/zzz/yyy
 git commit -m "$name"
 
 test_expect_code 1 "$name" \
-    'git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch3' \
+    'git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch3' \
     || true
 
 
 name='detect node change from directory to file #2'
 rm -f $GIT_DIR/index
-git checkout -b mybranch4 git-svn-HEAD
+git checkout -b mybranch4 remotes/git-svn
 rm -rf dir
 git update-index --remove -- dir/file
 touch dir
@@ -136,19 +136,19 @@ git update-index --add -- dir
 git commit -m "$name"
 
 test_expect_code 1 "$name" \
-    'git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch4' \
+    'git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch4' \
     || true
 
 
 name='remove executable bit from a file'
 rm -f $GIT_DIR/index
-git checkout -b mybranch5 git-svn-HEAD
+git checkout -b mybranch5 remotes/git-svn
 chmod -x exec.sh
 git update-index exec.sh
 git commit -m "$name"
 
 test_expect_success "$name" \
-    "git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch5 &&
+    "git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch5 &&
      test ! -x $SVN_TREE/exec.sh"
 
 
@@ -158,7 +158,7 @@ git update-index exec.sh
 git commit -m "$name"
 
 test_expect_success "$name" \
-    "git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch5 &&
+    "git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch5 &&
      test -x $SVN_TREE/exec.sh"
 
 
@@ -170,7 +170,7 @@ git update-index exec.sh
 git commit -m "$name"
 
 test_expect_success "$name" \
-    "git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch5 &&
+    "git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch5 &&
      test -L $SVN_TREE/exec.sh"
 
 
@@ -182,7 +182,7 @@ git update-index --add bar/zzz exec-2.sh
 git commit -m "$name"
 
 test_expect_success "$name" \
-    "git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch5 &&
+    "git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch5 &&
      test -x $SVN_TREE/bar/zzz &&
      test -L $SVN_TREE/exec-2.sh"
 
@@ -196,7 +196,7 @@ git update-index exec-2.sh
 git commit -m "$name"
 
 test_expect_success "$name" \
-    "git-svn commit --find-copies-harder --rmdir git-svn-HEAD..mybranch5 &&
+    "git-svn commit --find-copies-harder --rmdir remotes/git-svn..mybranch5 &&
      test -f $SVN_TREE/exec-2.sh &&
      test ! -L $SVN_TREE/exec-2.sh &&
      diff -u help $SVN_TREE/exec-2.sh"
@@ -207,9 +207,9 @@ name='test fetch functionality (svn => git) with alternate GIT_SVN_ID'
 GIT_SVN_ID=alt
 export GIT_SVN_ID
 test_expect_success "$name" \
-    "git-svn init $svnrepo && git-svn fetch -v &&
-     git-rev-list --pretty=raw git-svn-HEAD | grep ^tree | uniq > a &&
-     git-rev-list --pretty=raw alt-HEAD | grep ^tree | uniq > b &&
+    "git-svn init $svnrepo && git-svn fetch &&
+     git-rev-list --pretty=raw remotes/git-svn | grep ^tree | uniq > a &&
+     git-rev-list --pretty=raw remotes/alt | grep ^tree | uniq > b &&
      diff -u a b"
 
 test_done
diff --git a/contrib/gitview/gitview b/contrib/gitview/gitview
index 4e3847d8bf..de9f3f3c72 100755
--- a/contrib/gitview/gitview
+++ b/contrib/gitview/gitview
@@ -162,7 +162,7 @@ class CellRendererGraph(gtk.GenericCellRenderer):
 			for item in names:
 				names_len += len(item)
 
-		width = box_size * (cols + 1 ) + names_len 
+		width = box_size * (cols + 1 ) + names_len
 		height = box_size
 
 		# FIXME I have no idea how to use cell_area properly
@@ -239,20 +239,23 @@ class CellRendererGraph(gtk.GenericCellRenderer):
 				box_size / 4, 0, 2 * math.pi)
 
 
+		self.set_colour(ctx, colour, 0.0, 0.5)
+		ctx.stroke_preserve()
+
+		self.set_colour(ctx, colour, 0.5, 1.0)
+		ctx.fill_preserve()
+
 		if (len(names) != 0):
 			name = " "
 			for item in names:
 				name = name + item + " "
 
-			ctx.select_font_face("Monospace")
 			ctx.set_font_size(13)
-			ctx.text_path(name)
-
-		self.set_colour(ctx, colour, 0.0, 0.5)
-		ctx.stroke_preserve()
-
-		self.set_colour(ctx, colour, 0.5, 1.0)
-		ctx.fill()
+			if (flags & 1):
+				self.set_colour(ctx, colour, 0.5, 1.0)
+			else:
+				self.set_colour(ctx, colour, 0.0, 0.5)
+			ctx.show_text(name)
 
 class Commit:
 	""" This represent a commit object obtained after parsing the git-rev-list
@@ -261,11 +264,11 @@ class Commit:
 	children_sha1 = {}
 
 	def __init__(self, commit_lines):
-		self.message 		= ""
+		self.message		= ""
 		self.author		= ""
-		self.date 		= ""
-		self.committer 		= ""
-		self.commit_date 	= ""
+		self.date		= ""
+		self.committer		= ""
+		self.commit_date	= ""
 		self.commit_sha1	= ""
 		self.parent_sha1	= [ ]
 		self.parse_commit(commit_lines)
@@ -365,7 +368,7 @@ class DiffWindow:
 		save_menu.connect("activate", self.save_menu_response, "save")
 		save_menu.show()
 		menu_bar.append(save_menu)
-		vbox.pack_start(menu_bar, False, False, 2)
+		vbox.pack_start(menu_bar, expand=False, fill=True)
 		menu_bar.show()
 
 		scrollwin = gtk.ScrolledWindow()
@@ -391,7 +394,7 @@ class DiffWindow:
 		sourceview.show()
 
 
-	def set_diff(self, commit_sha1, parent_sha1):
+	def set_diff(self, commit_sha1, parent_sha1, encoding):
 		"""Set the differences showed by this window.
 		Compares the two trees and populates the window with the
 		differences.
@@ -401,7 +404,7 @@ class DiffWindow:
 			return
 
 		fp = os.popen("git diff-tree -p " + parent_sha1 + " " + commit_sha1)
-		self.buffer.set_text(fp.read())
+		self.buffer.set_text(unicode(fp.read(), encoding).encode('utf-8'))
 		fp.close()
 		self.window.show()
 
@@ -426,10 +429,11 @@ class GitView:
 
 	def __init__(self, with_diff=0):
 		self.with_diff = with_diff
-		self.window =  	gtk.Window(gtk.WINDOW_TOPLEVEL)
+		self.window =	gtk.Window(gtk.WINDOW_TOPLEVEL)
 		self.window.set_border_width(0)
 		self.window.set_title("Git repository browser")
 
+		self.get_encoding()
 		self.get_bt_sha1()
 
 		# Use three-quarters of the screen by default
@@ -468,22 +472,20 @@ class GitView:
 			self.bt_sha1[sha1].append(name)
 		fp.close()
 
+	def get_encoding(self):
+		fp = os.popen("git repo-config --get i18n.commitencoding")
+		self.encoding=string.strip(fp.readline())
+		fp.close()
+		if (self.encoding == ""):
+			self.encoding = "utf-8"
+
 
 	def construct(self):
 		"""Construct the window contents."""
+		vbox = gtk.VBox()
 		paned = gtk.VPaned()
 		paned.pack1(self.construct_top(), resize=False, shrink=True)
 		paned.pack2(self.construct_bottom(), resize=False, shrink=True)
-		self.window.add(paned)
-		paned.show()
-
-
-	def construct_top(self):
-		"""Construct the top-half of the window."""
-		vbox = gtk.VBox(spacing=6)
-		vbox.set_border_width(12)
-		vbox.show()
-
 		menu_bar = gtk.MenuBar()
 		menu_bar.set_pack_direction(gtk.PACK_DIRECTION_RTL)
 		help_menu = gtk.MenuItem("Help")
@@ -495,11 +497,23 @@ class GitView:
 		help_menu.set_submenu(menu)
 		help_menu.show()
 		menu_bar.append(help_menu)
-		vbox.pack_start(menu_bar, False, False, 2)
 		menu_bar.show()
+		vbox.pack_start(menu_bar, expand=False, fill=True)
+		vbox.pack_start(paned, expand=True, fill=True)
+		self.window.add(vbox)
+		paned.show()
+		vbox.show()
+
+
+	def construct_top(self):
+		"""Construct the top-half of the window."""
+		vbox = gtk.VBox(spacing=6)
+		vbox.set_border_width(12)
+		vbox.show()
+
 
 		scrollwin = gtk.ScrolledWindow()
-		scrollwin.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
+		scrollwin.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
 		scrollwin.set_shadow_type(gtk.SHADOW_IN)
 		vbox.pack_start(scrollwin, expand=True, fill=True)
 		scrollwin.show()
@@ -683,7 +697,7 @@ class GitView:
 		self.revid_label.set_text(revid_label)
 		self.committer_label.set_text(committer)
 		self.timestamp_label.set_text(timestamp)
-		self.message_buffer.set_text(message)
+		self.message_buffer.set_text(unicode(message, self.encoding).encode('utf-8'))
 
 		for widget in self.parents_widgets:
 			self.table.remove(widget)
@@ -728,7 +742,7 @@ class GitView:
 			button.set_relief(gtk.RELIEF_NONE)
 			button.set_sensitive(True)
 			button.connect("clicked", self._show_clicked_cb,
-					commit.commit_sha1, parent_id)
+					commit.commit_sha1, parent_id, self.encoding)
 			hbox.pack_start(button, expand=False, fill=True)
 			button.show()
 
@@ -870,15 +884,15 @@ class GitView:
 
 		# Reset nodepostion
 		if (last_nodepos > 5):
-			last_nodepos = -1 
+			last_nodepos = -1
 
 		# Add the incomplete lines of the last cell in this
 		try:
 			colour = self.colours[commit.commit_sha1]
 		except KeyError:
 			self.colours[commit.commit_sha1] = last_colour+1
-			last_colour = self.colours[commit.commit_sha1] 
-			colour =   self.colours[commit.commit_sha1] 
+			last_colour = self.colours[commit.commit_sha1]
+			colour =   self.colours[commit.commit_sha1]
 
 		try:
 			node_pos = self.nodepos[commit.commit_sha1]
@@ -910,7 +924,7 @@ class GitView:
 				self.colours[parent_id] = last_colour+1
 				last_colour = self.colours[parent_id]
 				self.nodepos[parent_id] = last_nodepos+1
-				last_nodepos = self.nodepos[parent_id] 
+				last_nodepos = self.nodepos[parent_id]
 
 			in_line.append((node_pos, self.nodepos[parent_id],
 						self.colours[parent_id]))
@@ -946,7 +960,7 @@ class GitView:
 			try:
 				next_commit = self.commits[index+1]
 				if (next_commit.commit_sha1 == sha1 and pos != int(pos)):
-				# join the line back to the node point 
+				# join the line back to the node point
 				# This need to be done only if we modified it
 					in_line.append((pos, pos-0.5, self.colours[sha1]))
 					continue;
@@ -967,10 +981,10 @@ class GitView:
 
 		self.treeview.grab_focus()
 
-	def _show_clicked_cb(self, widget,  commit_sha1, parent_sha1):
+	def _show_clicked_cb(self, widget,  commit_sha1, parent_sha1, encoding):
 		"""Callback for when the show button for a parent is clicked."""
 		window = DiffWindow()
-		window.set_diff(commit_sha1, parent_sha1)
+		window.set_diff(commit_sha1, parent_sha1, encoding)
 		self.treeview.grab_focus()
 
 if __name__ == "__main__":
diff --git a/count-delta.c b/count-delta.c
index 058a2aadb1..3ee3a0ccf1 100644
--- a/count-delta.c
+++ b/count-delta.c
@@ -3,11 +3,74 @@
  * The delta-parsing part is almost straight copy of patch-delta.c
  * which is (C) 2005 Nicolas Pitre <nico@cam.org>.
  */
+#include "cache.h"
+#include "delta.h"
+#include "count-delta.h"
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
-#include "delta.h"
-#include "count-delta.h"
+
+struct span {
+	struct span *next;
+	unsigned long ofs;
+	unsigned long end;
+};
+
+static void touch_range(struct span **span,
+			unsigned long ofs, unsigned long end)
+{
+	struct span *e = *span;
+	struct span *p = NULL;
+
+	while (e && e->ofs <= ofs) {
+		again:
+		if (ofs < e->end) {
+			while (e->end < end) {
+				if (e->next && e->next->ofs <= end) {
+					e->end = e->next->ofs;
+					e = e->next;
+				}
+				else {
+					e->end = end;
+					return;
+				}
+			}
+			return;
+		}
+		p = e;
+		e = e->next;
+	}
+	if (e && e->ofs <= end) {
+		e->ofs = ofs;
+		goto again;
+	}
+	else {
+		e = xmalloc(sizeof(*e));
+		e->ofs = ofs;
+		e->end = end;
+		if (p) {
+			e->next = p->next;
+			p->next = e;
+		}
+		else {
+			e->next = *span;
+			*span = e;
+		}
+	}
+}
+
+static unsigned long count_range(struct span *s)
+{
+	struct span *t;
+	unsigned long sz = 0;
+	while (s) {
+		t = s;
+		sz += s->end - s->ofs;
+		s = s->next;
+		free(t);
+	}
+	return sz;
+}
 
 /*
  * NOTE.  We do not _interpret_ delta fully.  As an approximation, we
@@ -21,10 +84,11 @@
 int count_delta(void *delta_buf, unsigned long delta_size,
 		unsigned long *src_copied, unsigned long *literal_added)
 {
-	unsigned long copied_from_source, added_literal;
+	unsigned long added_literal;
 	const unsigned char *data, *top;
 	unsigned char cmd;
 	unsigned long src_size, dst_size, out;
+	struct span *span = NULL;
 
 	if (delta_size < DELTA_SIZE_MIN)
 		return -1;
@@ -35,7 +99,7 @@ int count_delta(void *delta_buf, unsigned long delta_size,
 	src_size = get_delta_hdr_size(&data);
 	dst_size = get_delta_hdr_size(&data);
 
-	added_literal = copied_from_source = out = 0;
+	added_literal = out = 0;
 	while (data < top) {
 		cmd = *data++;
 		if (cmd & 0x80) {
@@ -49,7 +113,7 @@ int count_delta(void *delta_buf, unsigned long delta_size,
 			if (cmd & 0x40) cp_size |= (*data++ << 16);
 			if (cp_size == 0) cp_size = 0x10000;
 
-			copied_from_source += cp_size;
+			touch_range(&span, cp_off, cp_off+cp_size);
 			out += cp_size;
 		} else {
 			/* write literal into dst */
@@ -59,6 +123,8 @@ int count_delta(void *delta_buf, unsigned long delta_size,
 		}
 	}
 
+	*src_copied = count_range(span);
+
 	/* sanity check */
 	if (data != top || out != dst_size)
 		return -1;
@@ -66,7 +132,6 @@ int count_delta(void *delta_buf, unsigned long delta_size,
 	/* delete size is what was _not_ copied from source.
 	 * edit size is that and literal additions.
 	 */
-	*src_copied = copied_from_source;
 	*literal_added = added_literal;
 	return 0;
 }
diff --git a/delta.h b/delta.h
index a15350dabc..00fef0b8d7 100644
--- a/delta.h
+++ b/delta.h
@@ -4,7 +4,8 @@
 /* handling of delta buffers */
 extern void *diff_delta(void *from_buf, unsigned long from_size,
 			void *to_buf, unsigned long to_size,
-		        unsigned long *delta_size, unsigned long max_size);
+		        unsigned long *delta_size, unsigned long max_size,
+			void **from_index);
 extern void *patch_delta(void *src_buf, unsigned long src_size,
 			 void *delta_buf, unsigned long delta_size,
 			 unsigned long *dst_size);
diff --git a/diff-delta.c b/diff-delta.c
index c2f656ae39..dcd3f5572e 100644
--- a/diff-delta.c
+++ b/diff-delta.c
@@ -19,159 +19,139 @@
  */
 
 #include <stdlib.h>
+#include <string.h>
 #include "delta.h"
-#include "zlib.h"
 
 
-/* block size: min = 16, max = 64k, power of 2 */
-#define BLK_SIZE 16
-
-#define MIN(a, b) ((a) < (b) ? (a) : (b))
-
-#define GR_PRIME 0x9e370001
-#define HASH(v, b) (((unsigned int)(v) * GR_PRIME) >> (32 - (b)))
-	
-static unsigned int hashbits(unsigned int size)
-{
-	unsigned int val = 1, bits = 0;
-	while (val < size && bits < 32) {
-		val <<= 1;
-	       	bits++;
-	}
-	return bits ? bits: 1;
-}
-
-typedef struct s_chanode {
-	struct s_chanode *next;
-	int icurr;
-} chanode_t;
-
-typedef struct s_chastore {
-	int isize, nsize;
-	chanode_t *ancur;
-} chastore_t;
-
-static void cha_init(chastore_t *cha, int isize, int icount)
-{
-	cha->isize = isize;
-	cha->nsize = icount * isize;
-	cha->ancur = NULL;
-}
-
-static void *cha_alloc(chastore_t *cha)
-{
-	chanode_t *ancur;
-	void *data;
-
-	ancur = cha->ancur;
-	if (!ancur || ancur->icurr == cha->nsize) {
-		ancur = malloc(sizeof(chanode_t) + cha->nsize);
-		if (!ancur)
-			return NULL;
-		ancur->icurr = 0;
-		ancur->next = cha->ancur;
-		cha->ancur = ancur;
-	}
-
-	data = (void *)ancur + sizeof(chanode_t) + ancur->icurr;
-	ancur->icurr += cha->isize;
-	return data;
-}
-
-static void cha_free(chastore_t *cha)
-{
-	chanode_t *cur = cha->ancur;
-	while (cur) {
-		chanode_t *tmp = cur;
-		cur = cur->next;
-		free(tmp);
-	}
-}
-
-typedef struct s_bdrecord {
-	struct s_bdrecord *next;
-	unsigned int fp;
+struct index {
 	const unsigned char *ptr;
-} bdrecord_t;
+	struct index *next;
+};
 
-typedef struct s_bdfile {
-	chastore_t cha;
-	unsigned int fphbits;
-	bdrecord_t **fphash;
-} bdfile_t;
-
-static int delta_prepare(const unsigned char *buf, int bufsize, bdfile_t *bdf)
+static struct index ** delta_index(const unsigned char *buf,
+				   unsigned long bufsize,
+				   unsigned long trg_bufsize)
 {
-	unsigned int fphbits;
-	int i, hsize;
-	const unsigned char *data, *top;
-	bdrecord_t *brec;
-	bdrecord_t **fphash;
-
-	fphbits = hashbits(bufsize / BLK_SIZE + 1);
-	hsize = 1 << fphbits;
-	fphash = malloc(hsize * sizeof(bdrecord_t *));
-	if (!fphash)
-		return -1;
-	for (i = 0; i < hsize; i++)
-		fphash[i] = NULL;
-	cha_init(&bdf->cha, sizeof(bdrecord_t), hsize / 4 + 1);
-
-	top = buf + bufsize;
-	data = buf + (bufsize / BLK_SIZE) * BLK_SIZE;
-	if (data == top)
-		data -= BLK_SIZE;
-
-	for ( ; data >= buf; data -= BLK_SIZE) {
-		brec = cha_alloc(&bdf->cha);
-		if (!brec) {
-			cha_free(&bdf->cha);
-			free(fphash);
-			return -1;
-		}
-		brec->fp = adler32(0, data, MIN(BLK_SIZE, top - data));
-		brec->ptr = data;
-		i = HASH(brec->fp, fphbits);
-		brec->next = fphash[i];
-		fphash[i] = brec;
+	unsigned long hsize;
+	unsigned int i, hshift, hlimit, *hash_count;
+	const unsigned char *data;
+	struct index *entry, **hash;
+	void *mem;
+
+	/* determine index hash size */
+	hsize = bufsize / 4;
+	for (i = 8; (1 << i) < hsize && i < 24; i += 2);
+	hsize = 1 << i;
+	hshift = (i - 8) / 2;
+
+	/*
+	 * Allocate lookup index.  Note the first hash pointer
+	 * is used to store the hash shift value.
+	 */
+	mem = malloc((1 + hsize) * sizeof(*hash) + bufsize * sizeof(*entry));
+	if (!mem)
+		return NULL;
+	hash = mem;
+	*hash++ = (void *)hshift;
+	entry = mem + (1 + hsize) * sizeof(*hash);
+	memset(hash, 0, hsize * sizeof(*hash));
+
+	/* allocate an array to count hash entries */
+	hash_count = calloc(hsize, sizeof(*hash_count));
+	if (!hash_count) {
+		free(hash);
+		return NULL;
 	}
 
-	bdf->fphbits = fphbits;
-	bdf->fphash = fphash;
-
-	return 0;
-}
+	/* then populate the index */
+	data = buf + bufsize - 2;
+	while (data > buf) {
+		entry->ptr = --data;
+		i = data[0] ^ ((data[1] ^ (data[2] << hshift)) << hshift);
+		entry->next = hash[i];
+		hash[i] = entry++;
+		hash_count[i]++;
+ 	}
+
+	/*
+	 * Determine a limit on the number of entries in the same hash
+	 * bucket.  This guard us against patological data sets causing
+	 * really bad hash distribution with most entries in the same hash
+	 * bucket that would bring us to O(m*n) computing costs (m and n
+	 * corresponding to reference and target buffer sizes).
+	 *
+	 * The more the target buffer is large, the more it is important to
+	 * have small entry lists for each hash buckets.  With such a limit
+	 * the cost is bounded to something more like O(m+n).
+	 */
+	hlimit = (1 << 26) / trg_bufsize;
+	if (hlimit < 16)
+		hlimit = 16;
+
+	/*
+	 * Now make sure none of the hash buckets has more entries than
+	 * we're willing to test.  Otherwise we short-circuit the entry
+	 * list uniformly to still preserve a good repartition across
+	 * the reference buffer.
+	 */
+	for (i = 0; i < hsize; i++) {
+		if (hash_count[i] < hlimit)
+			continue;
+		entry = hash[i];
+		do {
+			struct index *keep = entry;
+			int skip = hash_count[i] / hlimit / 2;
+			do {
+				entry = entry->next;
+			} while(--skip && entry);
+			keep->next = entry;
+		} while(entry);
+	}
+	free(hash_count);
 
-static void delta_cleanup(bdfile_t *bdf)
-{
-	free(bdf->fphash);
-	cha_free(&bdf->cha);
+	return hash-1;
 }
 
+/* provide the size of the copy opcode given the block offset and size */
 #define COPYOP_SIZE(o, s) \
     (!!(o & 0xff) + !!(o & 0xff00) + !!(o & 0xff0000) + !!(o & 0xff000000) + \
      !!(s & 0xff) + !!(s & 0xff00) + 1)
 
+/* the maximum size for any opcode */
+#define MAX_OP_SIZE COPYOP_SIZE(0xffffffff, 0xffffffff)
+
 void *diff_delta(void *from_buf, unsigned long from_size,
 		 void *to_buf, unsigned long to_size,
 		 unsigned long *delta_size,
-		 unsigned long max_size)
+		 unsigned long max_size,
+		 void **from_index)
 {
-	int i, outpos, outsize, inscnt, csize, msize, moff;
-	unsigned int fp;
-	const unsigned char *ref_data, *ref_top, *data, *top, *ptr1, *ptr2;
-	unsigned char *out, *orig;
-	bdrecord_t *brec;
-	bdfile_t bdf;
+	unsigned int i, outpos, outsize, inscnt, hash_shift;
+	const unsigned char *ref_data, *ref_top, *data, *top;
+	unsigned char *out;
+	struct index *entry, **hash;
 
-	if (!from_size || !to_size || delta_prepare(from_buf, from_size, &bdf))
+	if (!from_size || !to_size)
 		return NULL;
-	
+	if (from_index && *from_index) {
+		hash = *from_index;
+	} else {
+		hash = delta_index(from_buf, from_size, to_size);
+		if (!hash)
+			return NULL;
+		if (from_index)
+			*from_index = hash;
+	}
+	hash_shift = (unsigned int)(*hash++);
+
 	outpos = 0;
 	outsize = 8192;
+	if (max_size && outsize >= max_size)
+		outsize = max_size + MAX_OP_SIZE + 1;
 	out = malloc(outsize);
 	if (!out) {
-		delta_cleanup(&bdf);
+		if (!from_index)
+			free(hash-1);
 		return NULL;
 	}
 
@@ -199,28 +179,28 @@ void *diff_delta(void *from_buf, unsigned long from_size,
 	}
 
 	inscnt = 0;
-	moff = 0;
-	while (data < top) {
-		msize = 0;
-		fp = adler32(0, data, MIN(top - data, BLK_SIZE));
-		i = HASH(fp, bdf.fphbits);
-		for (brec = bdf.fphash[i]; brec; brec = brec->next) {
-			if (brec->fp == fp) {
-				csize = ref_top - brec->ptr;
-				if (csize > top - data)
-					csize = top - data;
-				for (ptr1 = brec->ptr, ptr2 = data; 
-				     csize && *ptr1 == *ptr2;
-				     csize--, ptr1++, ptr2++);
 
-				csize = ptr1 - brec->ptr;
-				if (csize > msize) {
-					moff = brec->ptr - ref_data;
-					msize = csize;
-					if (msize >= 0x10000) {
-						msize = 0x10000;
-						break;
-					}
+	while (data < top) {
+		unsigned int moff = 0, msize = 0;
+		if (data + 3 <= top) {
+			i = data[0] ^ ((data[1] ^ (data[2] << hash_shift)) << hash_shift);
+			for (entry = hash[i]; entry; entry = entry->next) {
+				const unsigned char *ref = entry->ptr;
+				const unsigned char *src = data;
+				unsigned int ref_size = ref_top - ref;
+				if (ref_size > top - src)
+					ref_size = top - src;
+				if (ref_size > 0x10000)
+					ref_size = 0x10000;
+				if (ref_size <= msize)
+					break;
+				if (*ref != *src)
+					continue;
+				while (ref_size-- && *++src == *++ref);
+				if (msize < ref - entry->ptr) {
+					/* this is our best match so far */
+					msize = ref - entry->ptr;
+					moff = entry->ptr - ref_data;
 				}
 			}
 		}
@@ -235,13 +215,15 @@ void *diff_delta(void *from_buf, unsigned long from_size,
 				inscnt = 0;
 			}
 		} else {
+			unsigned char *op;
+
 			if (inscnt) {
 				out[outpos - inscnt - 1] = inscnt;
 				inscnt = 0;
 			}
 
 			data += msize;
-			orig = out + outpos++;
+			op = out + outpos++;
 			i = 0x80;
 
 			if (moff & 0xff) { out[outpos++] = moff; i |= 0x01; }
@@ -256,23 +238,22 @@ void *diff_delta(void *from_buf, unsigned long from_size,
 			msize >>= 8;
 			if (msize & 0xff) { out[outpos++] = msize; i |= 0x20; }
 
-			*orig = i;
-		}
-
-		if (max_size && outpos > max_size) {
-			free(out);
-			delta_cleanup(&bdf);
-			return NULL;
+			*op = i;
 		}
 
-		/* next time around the largest possible output is 1 + 4 + 3 */
-		if (outpos > outsize - 8) {
+		if (outpos >= outsize - MAX_OP_SIZE) {
 			void *tmp = out;
 			outsize = outsize * 3 / 2;
-			out = realloc(out, outsize);
+			if (max_size && outsize >= max_size)
+				outsize = max_size + MAX_OP_SIZE + 1;
+			if (max_size && outpos > max_size)
+				out = NULL;
+			else
+				out = realloc(out, outsize);
 			if (!out) {
 				free(tmp);
-				delta_cleanup(&bdf);
+				if (!from_index)
+					free(hash-1);
 				return NULL;
 			}
 		}
@@ -281,7 +262,8 @@ void *diff_delta(void *from_buf, unsigned long from_size,
 	if (inscnt)
 		out[outpos - inscnt - 1] = inscnt;
 
-	delta_cleanup(&bdf);
+	if (!from_index)
+		free(hash-1);
 	*delta_size = outpos;
 	return out;
 }
diff --git a/diff.c b/diff.c
index 804c08c2cf..c0548eed98 100644
--- a/diff.c
+++ b/diff.c
@@ -178,11 +178,12 @@ static void emit_rewrite_diff(const char *name_a,
 		copy_file('+', temp[1].name);
 }
 
-static void builtin_diff(const char *name_a,
+static const char *builtin_diff(const char *name_a,
 			 const char *name_b,
 			 struct diff_tempfile *temp,
 			 const char *xfrm_msg,
-			 int complete_rewrite)
+			 int complete_rewrite,
+			 const char **args)
 {
 	int i, next_at, cmd_size;
 	const char *const diff_cmd = "diff -L%s -L%s";
@@ -242,19 +243,24 @@ static void builtin_diff(const char *name_a,
 		}
 		if (xfrm_msg && xfrm_msg[0])
 			puts(xfrm_msg);
+		/*
+		 * we do not run diff between different kind
+		 * of objects.
+		 */
 		if (strncmp(temp[0].mode, temp[1].mode, 3))
-			/* we do not run diff between different kind
-			 * of objects.
-			 */
-			exit(0);
+			return NULL;
 		if (complete_rewrite) {
-			fflush(NULL);
 			emit_rewrite_diff(name_a, name_b, temp);
-			exit(0);
+			return NULL;
 		}
 	}
-	fflush(NULL);
-	execlp("/bin/sh","sh", "-c", cmd, NULL);
+
+	/* This is disgusting */
+	*args++ = "sh";
+	*args++ = "-c";
+	*args++ = cmd;
+	*args = NULL;
+	return "/bin/sh";
 }
 
 struct diff_filespec *alloc_filespec(const char *path)
@@ -559,6 +565,40 @@ static void remove_tempfile_on_signal(int signo)
 	raise(signo);
 }
 
+static int spawn_prog(const char *pgm, const char **arg)
+{
+	pid_t pid;
+	int status;
+
+	fflush(NULL);
+	pid = fork();
+	if (pid < 0)
+		die("unable to fork");
+	if (!pid) {
+		execvp(pgm, (char *const*) arg);
+		exit(255);
+	}
+
+	while (waitpid(pid, &status, 0) < 0) {
+		if (errno == EINTR)
+			continue;
+		return -1;
+	}
+
+	/* Earlier we did not check the exit status because
+	 * diff exits non-zero if files are different, and
+	 * we are not interested in knowing that.  It was a
+	 * mistake which made it harder to quit a diff-*
+	 * session that uses the git-apply-patch-script as
+	 * the GIT_EXTERNAL_DIFF.  A custom GIT_EXTERNAL_DIFF
+	 * should also exit non-zero only when it wants to
+	 * abort the entire diff-* session.
+	 */
+	if (WIFEXITED(status) && !WEXITSTATUS(status))
+		return 0;
+	return -1;
+}
+
 /* An external diff command takes:
  *
  * diff-cmd name infile1 infile1-sha1 infile1-mode \
@@ -573,9 +613,9 @@ static void run_external_diff(const char *pgm,
 			      const char *xfrm_msg,
 			      int complete_rewrite)
 {
+	const char *spawn_arg[10];
 	struct diff_tempfile *temp = diff_temp;
-	pid_t pid;
-	int status;
+	int retval;
 	static int atexit_asked = 0;
 	const char *othername;
 
@@ -592,59 +632,41 @@ static void run_external_diff(const char *pgm,
 		signal(SIGINT, remove_tempfile_on_signal);
 	}
 
-	fflush(NULL);
-	pid = fork();
-	if (pid < 0)
-		die("unable to fork");
-	if (!pid) {
-		if (pgm) {
-			if (one && two) {
-				const char *exec_arg[10];
-				const char **arg = &exec_arg[0];
-				*arg++ = pgm;
-				*arg++ = name;
-				*arg++ = temp[0].name;
-				*arg++ = temp[0].hex;
-				*arg++ = temp[0].mode;
-				*arg++ = temp[1].name;
-				*arg++ = temp[1].hex;
-				*arg++ = temp[1].mode;
-				if (other) {
-					*arg++ = other;
-					*arg++ = xfrm_msg;
-				}
-				*arg = NULL;
-				execvp(pgm, (char *const*) exec_arg);
+	if (pgm) {
+		const char **arg = &spawn_arg[0];
+		if (one && two) {
+			*arg++ = pgm;
+			*arg++ = name;
+			*arg++ = temp[0].name;
+			*arg++ = temp[0].hex;
+			*arg++ = temp[0].mode;
+			*arg++ = temp[1].name;
+			*arg++ = temp[1].hex;
+			*arg++ = temp[1].mode;
+			if (other) {
+				*arg++ = other;
+				*arg++ = xfrm_msg;
 			}
-			else
-				execlp(pgm, pgm, name, NULL);
+		} else {
+			*arg++ = pgm;
+			*arg++ = name;
 		}
-		/*
-		 * otherwise we use the built-in one.
-		 */
-		if (one && two)
-			builtin_diff(name, othername, temp, xfrm_msg,
-				     complete_rewrite);
-		else
+		*arg = NULL;
+	} else {
+		if (one && two) {
+			pgm = builtin_diff(name, othername, temp, xfrm_msg, complete_rewrite, spawn_arg);
+		} else
 			printf("* Unmerged path %s\n", name);
-		exit(0);
 	}
-	if (waitpid(pid, &status, 0) < 0 ||
-	    !WIFEXITED(status) || WEXITSTATUS(status)) {
-		/* Earlier we did not check the exit status because
-		 * diff exits non-zero if files are different, and
-		 * we are not interested in knowing that.  It was a
-		 * mistake which made it harder to quit a diff-*
-		 * session that uses the git-apply-patch-script as
-		 * the GIT_EXTERNAL_DIFF.  A custom GIT_EXTERNAL_DIFF
-		 * should also exit non-zero only when it wants to
-		 * abort the entire diff-* session.
-		 */
-		remove_tempfile();
+
+	retval = 0;
+	if (pgm)
+		retval = spawn_prog(pgm, spawn_arg);
+	remove_tempfile();
+	if (retval) {
 		fprintf(stderr, "external diff died, stopping at %s.\n", name);
 		exit(1);
 	}
-	remove_tempfile();
 }
 
 static void diff_fill_sha1_info(struct diff_filespec *one)
diff --git a/diffcore-break.c b/diffcore-break.c
index c57513a4fa..0fc2b860be 100644
--- a/diffcore-break.c
+++ b/diffcore-break.c
@@ -4,8 +4,6 @@
 #include "cache.h"
 #include "diff.h"
 #include "diffcore.h"
-#include "delta.h"
-#include "count-delta.h"
 
 static int should_break(struct diff_filespec *src,
 			struct diff_filespec *dst,
@@ -47,7 +45,6 @@ static int should_break(struct diff_filespec *src,
 	 * The value we return is 1 if we want the pair to be broken,
 	 * or 0 if we do not.
 	 */
-	void *delta;
 	unsigned long delta_size, base_size, src_copied, literal_added;
 	int to_break = 0;
 
@@ -58,6 +55,10 @@ static int should_break(struct diff_filespec *src,
 	if (!S_ISREG(src->mode) || !S_ISREG(dst->mode))
 		return 0; /* leave symlink rename alone */
 
+	if (src->sha1_valid && dst->sha1_valid &&
+	    !memcmp(src->sha1, dst->sha1, 20))
+		return 0; /* they are the same */
+
 	if (diff_populate_filespec(src, 0) || diff_populate_filespec(dst, 0))
 		return 0; /* error but caught downstream */
 
@@ -65,19 +66,11 @@ static int should_break(struct diff_filespec *src,
 	if (base_size < MINIMUM_BREAK_SIZE)
 		return 0; /* we do not break too small filepair */
 
-	delta = diff_delta(src->data, src->size,
-			   dst->data, dst->size,
-			   &delta_size, 0);
-	if (!delta)
-		return 0; /* error but caught downstream */
-
-	/* Estimate the edit size by interpreting delta. */
-	if (count_delta(delta, delta_size,
-			&src_copied, &literal_added)) {
-		free(delta);
-		return 0; /* we cannot tell */
-	}
-	free(delta);
+	if (diffcore_count_changes(src->data, src->size,
+				   dst->data, dst->size,
+				   0,
+				   &src_copied, &literal_added))
+		return 0;
 
 	/* Compute merge-score, which is "how much is removed
 	 * from the source material".  The clean-up stage will
diff --git a/diffcore-delta.c b/diffcore-delta.c
new file mode 100644
index 0000000000..d03787be65
--- /dev/null
+++ b/diffcore-delta.c
@@ -0,0 +1,128 @@
+#include "cache.h"
+#include "diff.h"
+#include "diffcore.h"
+
+struct linehash {
+	unsigned long bytes;
+	unsigned long hash;
+};
+
+static unsigned long hash_extended_line(const unsigned char **buf_p,
+					unsigned long left)
+{
+	/* An extended line is zero or more whitespace letters (including LF)
+	 * followed by one non whitespace letter followed by zero or more
+	 * non LF, and terminated with by a LF (or EOF).
+	 */
+	const unsigned char *bol = *buf_p;
+	const unsigned char *buf = bol;
+	unsigned long hashval = 0;
+	while (left) {
+		unsigned c = *buf++;
+		if (!c)
+			goto binary;
+		left--;
+		if (' ' < c) {
+			hashval = c;
+			break;
+		}
+	}
+	while (left) {
+		unsigned c = *buf++;
+		if (!c)
+			goto binary;
+		left--;
+		if (c == '\n')
+			break;
+		if (' ' < c)
+			hashval = hashval * 11 + c;
+	}
+	*buf_p = buf;
+	return hashval;
+
+ binary:
+	*buf_p = NULL;
+	return 0;
+}
+
+static int linehash_compare(const void *a_, const void *b_)
+{
+	struct linehash *a = (struct linehash *) a_;
+	struct linehash *b = (struct linehash *) b_;
+	if (a->hash < b->hash) return -1;
+	if (a->hash > b->hash) return 1;
+	return 0;
+}
+
+static struct linehash *hash_lines(const unsigned char *buf,
+				   unsigned long size)
+{
+	const unsigned char *eobuf = buf + size;
+	struct linehash *line = NULL;
+	int alloc = 0, used = 0;
+
+	while (buf < eobuf) {
+		const unsigned char *ptr = buf;
+		unsigned long hash = hash_extended_line(&buf, eobuf-ptr);
+		if (!buf) {
+			free(line);
+			return NULL;
+		}
+		if (alloc <= used) {
+			alloc = alloc_nr(alloc);
+			line = xrealloc(line, sizeof(*line) * alloc);
+		}
+		line[used].bytes = buf - ptr;
+		line[used].hash = hash;
+		used++;
+	}
+	qsort(line, used, sizeof(*line), linehash_compare);
+
+	/* Terminate the list */
+	if (alloc <= used)
+		line = xrealloc(line, sizeof(*line) * (used+1));
+	line[used].bytes = line[used].hash = 0;
+	return line;
+}
+
+int diffcore_count_changes(void *src, unsigned long src_size,
+			   void *dst, unsigned long dst_size,
+			   unsigned long delta_limit,
+			   unsigned long *src_copied,
+			   unsigned long *literal_added)
+{
+	struct linehash *src_lines, *dst_lines;
+	unsigned long sc, la;
+
+	src_lines = hash_lines(src, src_size);
+	if (!src_lines)
+		return -1;
+	dst_lines = hash_lines(dst, dst_size);
+	if (!dst_lines) {
+		free(src_lines);
+		return -1;
+	}
+	sc = la = 0;
+	while (src_lines->bytes && dst_lines->bytes) {
+		int cmp = linehash_compare(src_lines, dst_lines);
+		if (!cmp) {
+			sc += src_lines->bytes;
+			src_lines++;
+			dst_lines++;
+			continue;
+		}
+		if (cmp < 0) {
+			src_lines++;
+			continue;
+		}
+		la += dst_lines->bytes;
+		dst_lines++;
+	}
+	while (dst_lines->bytes) {
+		la += dst_lines->bytes;
+		dst_lines++;
+	}
+	*src_copied = sc;
+	*literal_added = la;
+	return 0;
+}
diff --git a/diffcore-rename.c b/diffcore-rename.c
index ffd126af0d..55cf1c37f3 100644
--- a/diffcore-rename.c
+++ b/diffcore-rename.c
@@ -4,8 +4,6 @@
 #include "cache.h"
 #include "diff.h"
 #include "diffcore.h"
-#include "delta.h"
-#include "count-delta.h"
 
 /* Table of rename/copy destinations */
 
@@ -135,7 +133,6 @@ static int estimate_similarity(struct diff_filespec *src,
 	 * match than anything else; the destination does not even
 	 * call into this function in that case.
 	 */
-	void *delta;
 	unsigned long delta_size, base_size, src_copied, literal_added;
 	unsigned long delta_limit;
 	int score;
@@ -165,28 +162,13 @@ static int estimate_similarity(struct diff_filespec *src,
 	if (diff_populate_filespec(src, 0) || diff_populate_filespec(dst, 0))
 		return 0; /* error but caught downstream */
 
-	delta_limit = base_size * (MAX_SCORE-minimum_score) / MAX_SCORE;
-	delta = diff_delta(src->data, src->size,
-			   dst->data, dst->size,
-			   &delta_size, delta_limit);
-	if (!delta)
-		/* If delta_limit is exceeded, we have too much differences */
-		return 0;
-
-	/* A delta that has a lot of literal additions would have
-	 * big delta_size no matter what else it does.
-	 */
-	if (base_size * (MAX_SCORE-minimum_score) < delta_size * MAX_SCORE) {
-		free(delta);
-		return 0;
-	}
 
-	/* Estimate the edit size by interpreting delta. */
-	if (count_delta(delta, delta_size, &src_copied, &literal_added)) {
-		free(delta);
+	delta_limit = base_size * (MAX_SCORE-minimum_score) / MAX_SCORE;
+	if (diffcore_count_changes(src->data, src->size,
+				   dst->data, dst->size,
+				   delta_limit,
+				   &src_copied, &literal_added))
 		return 0;
-	}
-	free(delta);
 
 	/* Extent of damage */
 	if (src->size + literal_added < src_copied)
diff --git a/diffcore.h b/diffcore.h
index 12cd816591..7f9889daf3 100644
--- a/diffcore.h
+++ b/diffcore.h
@@ -18,7 +18,7 @@
 #define MAX_SCORE 60000.0
 #define DEFAULT_RENAME_SCORE 30000 /* rename/copy similarity minimum (50%) */
 #define DEFAULT_BREAK_SCORE  30000 /* minimum for break to happen (50%)*/
-#define DEFAULT_MERGE_SCORE  48000 /* maximum for break-merge to happen (80%)*/
+#define DEFAULT_MERGE_SCORE  45000 /* maximum for break-merge to happen (75%)*/
 
 #define MINIMUM_BREAK_SIZE     400 /* do not break a file smaller than this */
 
@@ -101,4 +101,10 @@ void diff_debug_queue(const char *, struct diff_queue_struct *);
 #define diff_debug_queue(a,b) do {} while(0)
 #endif
 
+extern int diffcore_count_changes(void *src, unsigned long src_size,
+				  void *dst, unsigned long dst_size,
+				  unsigned long delta_limit,
+				  unsigned long *src_copied,
+				  unsigned long *literal_added);
+
 #endif
diff --git a/environment.c b/environment.c
index 251e53ca09..16c08f0697 100644
--- a/environment.c
+++ b/environment.c
@@ -17,6 +17,7 @@ int only_use_symrefs = 0;
 int repository_format_version = 0;
 char git_commit_encoding[MAX_ENCODING_LENGTH] = "utf-8";
 int shared_repository = 0;
+const char *apply_default_whitespace = NULL;
 
 static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
 	*git_graft_file;
diff --git a/git-am.sh b/git-am.sh
index 7cc4ae5a30..eab4aa891e 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -2,7 +2,8 @@
 #
 # Copyright (c) 2005, 2006 Junio C Hamano
 
-USAGE='[--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way] <mbox>
+USAGE='[--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way]
+  [--interactive] [--whitespace=<option>] <mbox>...
   or, when resuming [--skip | --resolved]'
 . git-sh-setup
 
@@ -100,7 +101,7 @@ fall_back_3way () {
 }
 
 prec=4
-dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary=
+dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary= ws=
 
 while case "$#" in 0) break;; esac
 do
@@ -133,6 +134,9 @@ do
 	--sk|--ski|--skip)
 	skip=t; shift ;;
 
+	--whitespace=*)
+	ws=$1; shift ;;
+
 	--)
 	shift; break ;;
 	-*)
@@ -171,10 +175,11 @@ else
 		exit 1
 	}
 
-	# -b, -s, -u and -k flags are kept for the resuming session after
-	# a patch failure.
+	# -b, -s, -u, -k and --whitespace flags are kept for the
+	# resuming session after a patch failure.
 	# -3 and -i can and must be given when resuming.
 	echo "$binary" >"$dotest/binary"
+	echo " $ws" >"$dotest/whitespace"
 	echo "$sign" >"$dotest/sign"
 	echo "$utf8" >"$dotest/utf8"
 	echo "$keep" >"$dotest/keep"
@@ -202,6 +207,7 @@ if test "$(cat "$dotest/keep")" = t
 then
 	keep=-k
 fi
+ws=`cat "$dotest/whitespace"`
 if test "$(cat "$dotest/sign")" = t
 then
 	SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
@@ -355,7 +361,7 @@ do
 
 	case "$resolved" in
 	'')
-		git-apply $binary --index "$dotest/patch"
+		git-apply $binary --index $ws "$dotest/patch"
 		apply_status=$?
 		;;
 	t)
diff --git a/git-annotate.perl b/git-annotate.perl
index f9c2c6caf5..08d479f4b9 100755
--- a/git-annotate.perl
+++ b/git-annotate.perl
@@ -15,6 +15,8 @@ ()
 	print STDERR 'Usage: ${\basename $0} [-s] [-S revs-file] file [ revision ]
 	-l, --long
 			Show long rev (Defaults off)
+	-t, --time
+			Show raw timestamp (Defaults off)
 	-r, --rename
 			Follow renames (Defaults on).
 	-S, --rev-file revs-file
@@ -26,12 +28,13 @@ ()
 	exit(1);
 }
 
-our ($help, $longrev, $rename, $starting_rev, $rev_file) = (0, 0, 1);
+our ($help, $longrev, $rename, $rawtime, $starting_rev, $rev_file) = (0, 0, 1);
 
 my $rc = GetOptions(	"long|l" => \$longrev,
+			"time|t" => \$rawtime,
 			"help|h" => \$help,
 			"rename|r" => \$rename,
-			"rev-file|S" => \$rev_file);
+			"rev-file|S=s" => \$rev_file);
 if (!$rc or $help) {
 	usage();
 }
@@ -174,7 +177,8 @@ sub git_rev_list {
 
 	my $revlist;
 	if ($rev_file) {
-		open($revlist, '<' . $rev_file);
+		open($revlist, '<' . $rev_file)
+		    or die "Failed to open $rev_file : $!";
 	} else {
 		$revlist = open_pipe("git-rev-list","--parents","--remove-empty",$rev,"--",$file)
 			or die "Failed to exec git-rev-list: $!";
@@ -304,6 +308,12 @@ sub _git_diff_parse {
 			}
 			$ri++;
 
+		} elsif (m/^\\/) {
+			;
+			# Skip \No newline at end of file.
+			# But this can be internationalized, so only look
+			# for an initial \
+
 		} else {
 			if (substr($_,1) ne get_line($slines,$ri) ) {
 				die sprintf("Line %d (%d) does not match:\n|%s\n|%s\n%s => %s\n",
@@ -404,8 +414,10 @@ sub git_commit_info {
 }
 
 sub format_date {
+	if ($rawtime) {
+		return $_[0];
+	}
 	my ($timestamp, $timezone) = split(' ', $_[0]);
-
 	return strftime("%Y-%m-%d %H:%M:%S " . $timezone, gmtime($timestamp));
 }
 
diff --git a/git-commit.sh b/git-commit.sh
index f7ee1aadee..d9ec1f14d9 100755
--- a/git-commit.sh
+++ b/git-commit.sh
@@ -3,7 +3,7 @@
 # Copyright (c) 2005 Linus Torvalds
 # Copyright (c) 2006 Junio C Hamano
 
-USAGE='[-a] [-s] [-v] [--no-verify] [-m <message> | -F <logfile> | (-C|-c) <commit>] [-e] [--author <author>] [[-i | -o] <path>...]'
+USAGE='[-a] [-s] [-v] [--no-verify] [-m <message> | -F <logfile> | (-C|-c) <commit>) [--amend] [-e] [--author <author>] [[-i | -o] <path>...]'
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
 
@@ -64,6 +64,22 @@ run_status () {
 	# We always show status for the whole tree.
 	cd "$TOP"
 
+	IS_INITIAL="$initial_commit"
+	REFERENCE=HEAD
+	case "$amend" in
+	t)
+		# If we are amending the initial commit, there
+		# is no HEAD^1.
+		if git-rev-parse --verify "HEAD^1" >/dev/null 2>&1
+		then
+			REFERENCE="HEAD^1"
+			IS_INITIAL=
+		else
+			IS_INITIAL=t
+		fi
+		;;
+	esac
+
 	# If TMP_INDEX is defined, that means we are doing
 	# "--only" partial commit, and that index file is used
 	# to build the tree for the commit.  Otherwise, if
@@ -85,10 +101,10 @@ run_status () {
 	*)  echo "# On branch $branch" ;;
 	esac
 
-	if test -z "$initial_commit"
+	if test -z "$IS_INITIAL"
 	then
 	    git-diff-index -M --cached --name-status \
-		--diff-filter=MDTCRA HEAD |
+		--diff-filter=MDTCRA $REFERENCE |
 	    sed -e '
 		    s/\\/\\\\/g
 		    s/ /\\ /g
@@ -147,7 +163,7 @@ run_status () {
 
 	if test -n "$verbose"
 	then
-	    git-diff-index --cached -M -p --diff-filter=MDTCRA HEAD
+	    git-diff-index --cached -M -p --diff-filter=MDTCRA $REFERENCE
 	fi
 	case "$committable" in
 	0)
@@ -173,6 +189,7 @@ also=
 only=
 logfile=
 use_commit=
+amend=
 no_edit=
 log_given=
 log_message=
@@ -254,6 +271,12 @@ do
       verify=
       shift
       ;;
+  --a|--am|--ame|--amen|--amend)
+      amend=t
+      log_given=t$log_given
+      use_commit=HEAD
+      shift
+      ;;
   -c)
       case "$#" in 1) usage ;; esac
       shift
@@ -328,6 +351,15 @@ done
 ################################################################
 # Sanity check options
 
+case "$amend,$initial_commit" in
+t,t)
+  die "You do not have anything to amend." ;;
+t,)
+  if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
+    die "You are in the middle of a merge -- cannot amend."
+  fi ;;
+esac
+
 case "$log_given" in
 tt*)
   die "Only one of -c/-C/-F/-m can be used." ;;
@@ -559,13 +591,18 @@ if test -z "$initial_commit"
 then
 	if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
 		PARENTS="-p HEAD "`sed -e 's/^/-p /' "$GIT_DIR/MERGE_HEAD"`
+	elif test -n "$amend"; then
+		PARENTS=$(git-cat-file commit HEAD |
+			sed -n -e '/^$/q' -e 's/^parent /-p /p')
 	fi
+	current=$(git-rev-parse --verify HEAD)
 else
 	if [ -z "$(git-ls-files)" ]; then
 		echo >&2 Nothing to commit
 		exit 1
 	fi
 	PARENTS=""
+	current=
 fi
 
 {
diff --git a/git-cvsserver.perl b/git-cvsserver.perl
index d20d1a8c4b..7b3ba1b9de 100755
--- a/git-cvsserver.perl
+++ b/git-cvsserver.perl
@@ -53,6 +53,7 @@
     'Entry'           => \&req_Entry,
     'Modified'        => \&req_Modified,
     'Unchanged'       => \&req_Unchanged,
+    'Questionable'    => \&req_Questionable,
     'Argument'        => \&req_Argument,
     'Argumentx'       => \&req_Argument,
     'expand-modules'  => \&req_expandmodules,
@@ -63,6 +64,7 @@
     'ci'              => \&req_ci,
     'diff'            => \&req_diff,
     'log'             => \&req_log,
+    'rlog'            => \&req_log,
     'tag'             => \&req_CATCHALL,
     'status'          => \&req_status,
     'admin'           => \&req_CATCHALL,
@@ -459,6 +461,22 @@ sub req_Unchanged
     #$log->debug("req_Unchanged : $data");
 }
 
+# Questionable filename \n
+#     Response expected: no. Additional data: no.
+#     Tell the server to check whether filename should be ignored,
+#     and if not, next time the server sends responses, send (in
+#     a M response) `?' followed by the directory and filename.
+#     filename must not contain `/'; it needs to be a file in the
+#     directory named by the most recent Directory request.
+sub req_Questionable
+{
+    my ( $cmd, $data ) = @_;
+
+    $state->{entries}{$state->{directory}.$data}{questionable} = 1;
+
+    #$log->debug("req_Questionable : $data");
+}
+
 # Argument text \n
 #     Response expected: no. Save argument for use in a subsequent command.
 #     Arguments accumulate until an argument-using command is given, at which
@@ -553,8 +571,19 @@ sub req_co
     my $updater = GITCVS::updater->new($state->{CVSROOT}, $module, $log);
     $updater->update();
 
+    $checkout_path =~ s|/$||; # get rid of trailing slashes
+
+    # Eclipse seems to need the Clear-sticky command
+    # to prepare the 'Entries' file for the new directory.
+    print "Clear-sticky $checkout_path/\n";
+    print $state->{CVSROOT} . "/$checkout_path/\n";
+    print "Clear-static-directory $checkout_path/\n";
+    print $state->{CVSROOT} . "/$checkout_path/\n";
+
     # instruct the client that we're checking out to $checkout_path
-    print "E cvs server: updating $checkout_path\n";
+    print "E cvs checkout: Updating $checkout_path\n";
+
+    my %seendirs = ();
 
     foreach my $git ( @{$updater->gethead} )
     {
@@ -567,21 +596,29 @@ sub req_co
         print "Mod-time $git->{modified}\n";
 
         # print some information to the client
-        print "MT +updated\n";
-        print "MT text U\n";
         if ( defined ( $git->{dir} ) and $git->{dir} ne "./" )
         {
-            print "MT fname $checkout_path/$git->{dir}$git->{name}\n";
+            print "M U $checkout_path/$git->{dir}$git->{name}\n";
         } else {
-            print "MT fname $checkout_path/$git->{name}\n";
+            print "M U $checkout_path/$git->{name}\n";
         }
-        print "MT newline\n";
-        print "MT -updated\n";
+
+	if (length($git->{dir}) && $git->{dir} ne './' && !exists($seendirs{$git->{dir}})) {
+
+	    # Eclipse seems to need the Clear-sticky command
+	    # to prepare the 'Entries' file for the new directory.
+	    print "Clear-sticky $module/$git->{dir}\n";
+	    print $state->{CVSROOT} . "/$module/$git->{dir}\n";
+	    print "Clear-static-directory $module/$git->{dir}\n";
+	    print $state->{CVSROOT} . "/$module/$git->{dir}\n";
+	    print "E cvs checkout: Updating /$module/$git->{dir}\n";
+	    $seendirs{$git->{dir}} = 1;
+	}
 
         # instruct client we're sending a file to put in this path
-        print "Created $checkout_path/" . ( defined ( $git->{dir} ) ? $git->{dir} . "/" : "" ) . "\n";
+        print "Created $checkout_path/" . ( defined ( $git->{dir} ) and $git->{dir} ne "./" ? $git->{dir} . "/" : "" ) . "\n";
 
-        print $state->{CVSROOT} . "/$module/" . ( defined ( $git->{dir} ) ? $git->{dir} . "/" : "" ) . "$git->{name}\n";
+        print $state->{CVSROOT} . "/$module/" . ( defined ( $git->{dir} ) and $git->{dir} ne "./" ? $git->{dir} . "/" : "" ) . "$git->{name}\n";
 
         # this is an "entries" line
         print "/$git->{name}/1.$git->{revision}///\n";
@@ -612,6 +649,26 @@ sub req_update
 
     argsplit("update");
 
+    #
+    # It may just be a client exploring the available heads/modukles
+    # in that case, list them as top level directories and leave it
+    # at that. Eclipse uses this technique to offer you a list of
+    # projects (heads in this case) to checkout.
+    #
+    if ($state->{module} eq '') {
+        print "E cvs update: Updating .\n";
+	opendir HEADS, $state->{CVSROOT} . '/refs/heads';
+	while (my $head = readdir(HEADS)) {
+	    if (-f $state->{CVSROOT} . '/refs/heads/' . $head) {
+	        print "E cvs update: New directory `$head'\n";
+	    }
+	}
+	closedir HEADS;
+	print "ok\n";
+	return 1;
+    }
+
+
     # Grab a handle to the SQLite db and do any necessary updates
     my $updater = GITCVS::updater->new($state->{CVSROOT}, $state->{module}, $log);
 
@@ -657,8 +714,27 @@ sub req_update
 
         #$log->debug("Target revision is $meta->{revision}, current working revision is $wrev");
 
-        # Files are up to date if the working copy and repo copy have the same revision, and the working copy is unmodified _and_ the user hasn't specified -C
-        next if ( defined ( $wrev ) and defined($meta->{revision}) and $wrev == $meta->{revision} and $state->{entries}{$filename}{unchanged} and not exists ( $state->{opt}{C} ) );
+        # Files are up to date if the working copy and repo copy have the same revision,
+        # and the working copy is unmodified _and_ the user hasn't specified -C
+        next if ( defined ( $wrev )
+                  and defined($meta->{revision})
+                  and $wrev == $meta->{revision}
+                  and $state->{entries}{$filename}{unchanged}
+                  and not exists ( $state->{opt}{C} ) );
+
+        # If the working copy and repo copy have the same revision,
+        # but the working copy is modified, tell the client it's modified
+        if ( defined ( $wrev )
+             and defined($meta->{revision})
+             and $wrev == $meta->{revision}
+             and not exists ( $state->{opt}{C} ) )
+        {
+            $log->info("Tell the client the file is modified");
+            print "MT text U\n";
+            print "MT fname $filename\n";
+            print "MT newline\n";
+            next;
+        }
 
         if ( $meta->{filehash} eq "deleted" )
         {
@@ -670,7 +746,8 @@ sub req_update
             print "Removed $dirpart\n";
             print "$filepart\n";
         }
-        elsif ( not defined ( $state->{entries}{$filename}{modified_hash} ) or $state->{entries}{$filename}{modified_hash} eq $oldmeta->{filehash} )
+        elsif ( not defined ( $state->{entries}{$filename}{modified_hash} )
+		or $state->{entries}{$filename}{modified_hash} eq $oldmeta->{filehash} )
         {
             $log->info("Updating '$filename'");
             # normal update, just send the new revision (either U=Update, or A=Add, or R=Remove)
@@ -706,6 +783,7 @@ sub req_update
             # transmit file
             transmitfile($meta->{filehash});
         } else {
+            $log->info("Updating '$filename'");
             my ( $filepart, $dirpart ) = filenamesplit($meta->{name});
 
             my $dir = tempdir( DIR => $TEMP_DIR, CLEANUP => 1 ) . "/";
diff --git a/git-format-patch.sh b/git-format-patch.sh
index eb75de4601..2bd26395ec 100755
--- a/git-format-patch.sh
+++ b/git-format-patch.sh
@@ -174,7 +174,7 @@ titleScript='
 process_one () {
 	perl -w -e '
 my ($keep_subject, $num, $signoff, $commsg) = @ARGV;
-my ($signoff_pattern, $done_header, $done_subject, $signoff_seen,
+my ($signoff_pattern, $done_header, $done_subject, $done_separator, $signoff_seen,
     $last_was_signoff);
 
 if ($signoff) {
@@ -228,6 +228,11 @@ while (<FH>) {
 	$done_subject = 1;
 	next;
     }
+    unless ($done_separator) {
+        print "\n";
+        $done_separator = 1;
+        next if (/^$/);
+    }
 
     $last_was_signoff = 0;
     if (/Signed-off-by:/i) {
diff --git a/git-mv.perl b/git-mv.perl
index 2ea852c918..fe9c40e1b9 100755
--- a/git-mv.perl
+++ b/git-mv.perl
@@ -19,25 +19,26 @@ ()
 	exit(1);
 }
 
-my $GIT_DIR = `git rev-parse --git-dir`;
-exit 1 if $?; # rev-parse would have given "not a git dir" message.
-chomp($GIT_DIR);
-
 our ($opt_n, $opt_f, $opt_h, $opt_k, $opt_v);
 getopts("hnfkv") || usage;
 usage() if $opt_h;
 @ARGV >= 1 or usage;
 
+my $GIT_DIR = `git rev-parse --git-dir`;
+exit 1 if $?; # rev-parse would have given "not a git dir" message.
+chomp($GIT_DIR);
+
 my (@srcArgs, @dstArgs, @srcs, @dsts);
 my ($src, $dst, $base, $dstDir);
 
+# remove any trailing slash in arguments
+for (@ARGV) { s/\/*$//; }
+
 my $argCount = scalar @ARGV;
 if (-d $ARGV[$argCount-1]) {
 	$dstDir = $ARGV[$argCount-1];
-	# remove any trailing slash
-	$dstDir =~ s/\/$//;
 	@srcArgs = @ARGV[0..$argCount-2];
-	
+
 	foreach $src (@srcArgs) {
 		$base = $src;
 		$base =~ s/^.*\///;
@@ -46,10 +47,14 @@ ()
 	}
 }
 else {
-    if ($argCount != 2) {
+    if ($argCount < 2) {
+	print "Error: need at least two arguments\n";
+	exit(1);
+    }
+    if ($argCount > 2) {
 	print "Error: moving to directory '"
 	    . $ARGV[$argCount-1]
-	    . "' not possible; not exisiting\n";
+	    . "' not possible; not existing\n";
 	exit(1);
     }
     @srcArgs = ($ARGV[0]);
@@ -57,6 +62,16 @@ ()
     $dstDir = "";
 }
 
+# normalize paths, needed to compare against versioned files and update-index
+# also, this is nicer to end-users by doing ".//a/./b/.//./c" ==> "a/b/c"
+for (@srcArgs, @dstArgs) {
+    s|^\./||;
+    s|/\./|/| while (m|/\./|);
+    s|//+|/|g;
+    # Also "a/b/../c" ==> "a/c"
+    1 while (s,(^|/)[^/]+/\.\./,$1,);
+}
+
 my (@allfiles,@srcfiles,@dstfiles);
 my $safesrc;
 my (%overwritten, %srcForDst);
diff --git a/git-svnimport.perl b/git-svnimport.perl
index ee2940f480..639aa41861 100755
--- a/git-svnimport.perl
+++ b/git-svnimport.perl
@@ -13,6 +13,7 @@
 use strict;
 use warnings;
 use Getopt::Std;
+use File::Copy;
 use File::Spec;
 use File::Temp qw(tempfile);
 use File::Path qw(mkpath);
@@ -29,19 +30,21 @@
 $SIG{'PIPE'}="IGNORE";
 $ENV{'TZ'}="UTC";
 
-our($opt_h,$opt_o,$opt_v,$opt_u,$opt_C,$opt_i,$opt_m,$opt_M,$opt_t,$opt_T,$opt_b,$opt_r,$opt_s,$opt_l,$opt_d,$opt_D);
+our($opt_h,$opt_o,$opt_v,$opt_u,$opt_C,$opt_i,$opt_m,$opt_M,$opt_t,$opt_T,
+    $opt_b,$opt_r,$opt_I,$opt_A,$opt_s,$opt_l,$opt_d,$opt_D);
 
 sub usage() {
 	print STDERR <<END;
 Usage: ${\basename $0}     # fetch/update GIT from SVN
        [-o branch-for-HEAD] [-h] [-v] [-l max_rev]
        [-C GIT_repository] [-t tagname] [-T trunkname] [-b branchname]
-       [-d|-D] [-i] [-u] [-r] [-s start_chg] [-m] [-M regex] [SVN_URL]
+       [-d|-D] [-i] [-u] [-r] [-I ignorefilename] [-s start_chg]
+       [-m] [-M regex] [-A author_file] [SVN_URL]
 END
 	exit(1);
 }
 
-getopts("b:C:dDhil:mM:o:rs:t:T:uv") or usage();
+getopts("A:b:C:dDhiI:l:mM:o:rs:t:T:uv") or usage();
 usage if $opt_h;
 
 my $tag_name = $opt_t || "tags";
@@ -66,6 +69,25 @@ END
 	push (@mergerx, qr/$opt_M/);
 }
 
+# Absolutize filename now, since we will have chdir'ed by the time we
+# get around to opening it.
+$opt_A = File::Spec->rel2abs($opt_A) if $opt_A;
+
+our %users = ();
+our $users_file = undef;
+sub read_users($) {
+	$users_file = File::Spec->rel2abs(@_);
+	die "Cannot open $users_file\n" unless -f $users_file;
+	open(my $authors,$users_file);
+	while(<$authors>) {
+		chomp;
+		next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
+		(my $user,my $name,my $email) = ($1,$2,$3);
+		$users{$user} = [$name,$email];
+	}
+	close($authors);
+}
+
 select(STDERR); $|=1; select(STDOUT);
 
 
@@ -112,16 +134,40 @@ sub file {
 		    DIR => File::Spec->tmpdir(), UNLINK => 1);
 
 	print "... $rev $path ...\n" if $opt_v;
-	my $pool = SVN::Pool->new();
-	eval { $self->{'svn'}->get_file($path,$rev,$fh,$pool); };
-	$pool->clear;
+	my (undef, $properties);
+	eval { (undef, $properties)
+		   = $self->{'svn'}->get_file($path,$rev,$fh); };
 	if($@) {
 		return undef if $@ =~ /Attempted to get checksum/;
 		die $@;
 	}
+	my $mode;
+	if (exists $properties->{'svn:executable'}) {
+		$mode = '0755';
+	} else {
+		$mode = '0644';
+	}
 	close ($fh);
 
-	return $name;
+	return ($name, $mode);
+}
+
+sub ignore {
+	my($self,$path,$rev) = @_;
+
+	print "... $rev $path ...\n" if $opt_v;
+	my (undef,undef,$properties)
+	    = $self->{'svn'}->get_dir($path,$rev,undef);
+	if (exists $properties->{'svn:ignore'}) {
+		my ($fh, $name) = tempfile('gitsvn.XXXXXX',
+					   DIR => File::Spec->tmpdir(),
+					   UNLINK => 1);
+		print $fh $properties->{'svn:ignore'};
+		close($fh);
+		return $name;
+	} else {
+		return undef;
+	}
 }
 
 package main;
@@ -263,6 +309,14 @@ ($$)
 -d $git_dir
 	or die "Could not create git subdir ($git_dir).\n";
 
+my $default_authors = "$git_dir/svn-authors";
+if ($opt_A) {
+	read_users($opt_A);
+	copy($opt_A,$default_authors) or die "Copy failed: $!";
+} else {
+	read_users($default_authors) if -f $default_authors;
+}
+
 open BRANCHES,">>", "$git_dir/svn2git";
 
 sub node_kind($$$) {
@@ -296,7 +350,7 @@ ($$$)
 	my $svnpath = revert_split_path($branch,$path);
 
 	# now get it
-	my $name;
+	my ($name,$mode);
 	if($opt_d) {
 		my($req,$res);
 
@@ -316,8 +370,9 @@ ($$$)
 			return undef if $res->code == 301; # directory?
 			die $res->status_line." at $url\n";
 		}
+		$mode = '0644'; # can't obtain mode via direct http request?
 	} else {
-		$name = $svn->file("$svnpath",$rev);
+		($name,$mode) = $svn->file("$svnpath",$rev);
 		return undef unless defined $name;
 	}
 
@@ -331,10 +386,37 @@ ($$$)
 	chomp $sha;
 	close $F;
 	unlink $name;
-	my $mode = "0644"; # SV does not seem to store any file modes
 	return [$mode, $sha, $path];
 }
 
+sub get_ignore($$$$$) {
+	my($new,$old,$rev,$branch,$path) = @_;
+
+	return unless $opt_I;
+	my $svnpath = revert_split_path($branch,$path);
+	my $name = $svn->ignore("$svnpath",$rev);
+	if ($path eq '/') {
+		$path = $opt_I;
+	} else {
+		$path = File::Spec->catfile($path,$opt_I);
+	}
+	if (defined $name) {
+		my $pid = open(my $F, '-|');
+		die $! unless defined $pid;
+		if (!$pid) {
+			exec("git-hash-object", "-w", $name)
+			    or die "Cannot create object: $!\n";
+		}
+		my $sha = <$F>;
+		chomp $sha;
+		close $F;
+		unlink $name;
+		push(@$new,['0644',$sha,$path]);
+	} else {
+		push(@$old,$path);
+	}
+}
+
 sub split_path($$) {
 	my($rev,$path) = @_;
 	my $branch;
@@ -431,6 +513,10 @@ sub commit {
 
 	if (not defined $author) {
 		$author_name = $author_email = "unknown";
+	} elsif (defined $users_file) {
+		die "User $author is not listed in $users_file\n"
+		    unless exists $users{$author};
+		($author_name,$author_email) = @{$users{$author}};
 	} elsif ($author =~ /^(.*?)\s+<(.*)>$/) {
 		($author_name, $author_email) = ($1, $2);
 	} else {
@@ -540,6 +626,9 @@ sub commit {
 						my $opath = $action->[3];
 						print STDERR "$revision: $branch: could not fetch '$opath'\n";
 					}
+				} elsif ($node_kind eq $SVN::Node::dir) {
+					get_ignore(\@new, \@old, $revision,
+						   $branch,$path);
 				}
 			} elsif ($action->[0] eq "D") {
 				push(@old,$path);
@@ -548,6 +637,9 @@ sub commit {
 				if ($node_kind eq $SVN::Node::file) {
 					my $f = get_file($revision,$branch,$path);
 					push(@new,$f) if $f;
+				} elsif ($node_kind eq $SVN::Node::dir) {
+					get_ignore(\@new, \@old, $revision,
+						   $branch,$path);
 				}
 			} else {
 				die "$revision: unknown action '".$action->[0]."' for $path\n";
diff --git a/git-verify-tag.sh b/git-verify-tag.sh
index 726b1e706b..36f171b302 100755
--- a/git-verify-tag.sh
+++ b/git-verify-tag.sh
@@ -4,9 +4,21 @@ USAGE='<tag>'
 SUBDIRECTORY_OK='Yes'
 . git-sh-setup
 
+verbose=
+while case $# in 0) break;; esac
+do
+	case "$1" in
+	-v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
+		verbose=t ;;
+	*)
+		break ;;
+	esac
+	shift
+done
+
 if [ "$#" != "1" ]
 then
-  usage
+	usage
 fi
 
 type="$(git-cat-file -t "$1" 2>/dev/null)" ||
@@ -15,6 +27,13 @@ type="$(git-cat-file -t "$1" 2>/dev/null)" ||
 test "$type" = tag ||
 	die "$1: cannot verify a non-tag object of type $type."
 
+case "$verbose" in
+t)
+	git-cat-file -p "$1" |
+	sed -n -e '/^-----BEGIN PGP SIGNATURE-----/q' -e p
+	;;
+esac
+
 git-cat-file tag "$1" >"$GIT_DIR/.tmp-vtag" || exit 1
 cat "$GIT_DIR/.tmp-vtag" |
 sed '/-----BEGIN PGP/Q' |
diff --git a/git.c b/git.c
index b0da6b1945..a547dbd913 100644
--- a/git.c
+++ b/git.c
@@ -256,12 +256,67 @@ static int cmd_log(int argc, char **argv, char **envp)
 	struct rev_info rev;
 	struct commit *commit;
 	char *buf = xmalloc(LOGSIZE);
+	static enum cmit_fmt commit_format = CMIT_FMT_DEFAULT;
+	int abbrev = DEFAULT_ABBREV;
+	int show_parents = 0;
+	const char *commit_prefix = "commit ";
 
 	argc = setup_revisions(argc, argv, &rev, "HEAD");
+	while (1 < argc) {
+		char *arg = argv[1];
+		if (!strncmp(arg, "--pretty", 8)) {
+			commit_format = get_commit_format(arg + 8);
+			if (commit_format == CMIT_FMT_ONELINE)
+				commit_prefix = "";
+		}
+		else if (!strcmp(arg, "--parents")) {
+			show_parents = 1;
+		}
+		else if (!strcmp(arg, "--no-abbrev")) {
+			abbrev = 0;
+		}
+		else if (!strncmp(arg, "--abbrev=", 9)) {
+			abbrev = strtoul(arg + 9, NULL, 10);
+			if (abbrev && abbrev < MINIMUM_ABBREV)
+				abbrev = MINIMUM_ABBREV;
+			else if (40 < abbrev)
+				abbrev = 40;
+		}
+		else
+			die("unrecognized argument: %s", arg);
+		argc--; argv++;
+	}
+
 	prepare_revision_walk(&rev);
 	setup_pager();
 	while ((commit = get_revision(&rev)) != NULL) {
-		pretty_print_commit(CMIT_FMT_DEFAULT, commit, ~0, buf, LOGSIZE, 18);
+		printf("%s%s", commit_prefix,
+		       sha1_to_hex(commit->object.sha1));
+		if (show_parents) {
+			struct commit_list *parents = commit->parents;
+			while (parents) {
+				struct object *o = &(parents->item->object);
+				parents = parents->next;
+				if (o->flags & TMP_MARK)
+					continue;
+				printf(" %s", sha1_to_hex(o->sha1));
+				o->flags |= TMP_MARK;
+			}
+			/* TMP_MARK is a general purpose flag that can
+			 * be used locally, but the user should clean
+			 * things up after it is done with them.
+			 */
+			for (parents = commit->parents;
+			     parents;
+			     parents = parents->next)
+				parents->item->object.flags &= ~TMP_MARK;
+		}
+		if (commit_format == CMIT_FMT_ONELINE)
+			putchar(' ');
+		else
+			putchar('\n');
+		pretty_print_commit(commit_format, commit, ~0, buf,
+				    LOGSIZE, abbrev);
 		printf("%s\n", buf);
 	}
 	free(buf);
diff --git a/pack-objects.c b/pack-objects.c
index 21ee572f48..d6a3463604 100644
--- a/pack-objects.c
+++ b/pack-objects.c
@@ -99,7 +99,7 @@ static int reused_delta = 0;
 
 static int pack_revindex_ix(struct packed_git *p)
 {
-	unsigned long ui = (unsigned long)(long)p;
+	unsigned long ui = (unsigned long)p;
 	int i;
 
 	ui = ui ^ (ui >> 16); /* defeat structure alignment */
@@ -204,7 +204,7 @@ static void *delta_against(void *buf, unsigned long size, struct object_entry *e
 	if (!otherbuf)
 		die("unable to read %s", sha1_to_hex(entry->delta->sha1));
         delta_buf = diff_delta(otherbuf, othersize,
-			       buf, size, &delta_size, 0);
+			       buf, size, &delta_size, 0, NULL);
         if (!delta_buf || delta_size != entry->delta_size)
         	die("delta size changed");
         free(buf);
@@ -810,6 +810,7 @@ static int type_size_sort(const struct object_entry *a, const struct object_entr
 struct unpacked {
 	struct object_entry *entry;
 	void *data;
+	void **delta_index;
 };
 
 /*
@@ -891,7 +892,8 @@ static int try_delta(struct unpacked *cur, struct unpacked *old, unsigned max_de
 	if (sizediff >= max_size)
 		return -1;
 	delta_buf = diff_delta(old->data, oldsize,
-			       cur->data, size, &delta_size, max_size);
+			       cur->data, size, &delta_size,
+			       max_size, old->delta_index);
 	if (!delta_buf)
 		return 0;
 	cur_entry->delta = old_entry;
@@ -948,6 +950,7 @@ static void find_deltas(struct object_entry **list, int window, int depth)
 			 */
 			continue;
 
+		free(n->delta_index);
 		free(n->data);
 		n->entry = entry;
 		n->data = read_sha1_file(entry->sha1, type, &size);
@@ -974,8 +977,10 @@ static void find_deltas(struct object_entry **list, int window, int depth)
 	if (progress)
 		fputc('\n', stderr);
 
-	for (i = 0; i < window; ++i)
+	for (i = 0; i < window; ++i) {
+		free(array[i].delta_index);
 		free(array[i].data);
+	}
 	free(array);
 }
 
diff --git a/read-tree.c b/read-tree.c
index f39fe5ca65..be29b3fe11 100644
--- a/read-tree.c
+++ b/read-tree.c
@@ -560,9 +560,11 @@ static int threeway_merge(struct cache_entry **stages)
 		 */
 		if ((head_deleted && remote_deleted) ||
 		    (head_deleted && remote && remote_match) ||
-		    (remote_deleted && head && head_match))
+		    (remote_deleted && head && head_match)) {
+			if (index)
+				return deleted_entry(index, index);
 			return 0;
-
+		}
 		/*
 		 * Added in both, identically.
 		 */
@@ -704,7 +706,7 @@ static int read_cache_unmerged(void)
 	return deleted;
 }
 
-static const char read_tree_usage[] = "git-read-tree (<sha> | -m [-u | -i] <sha1> [<sha2> [<sha3>]])";
+static const char read_tree_usage[] = "git-read-tree (<sha> | -m [--aggressive] [-u | -i] <sha1> [<sha2> [<sha3>]])";
 
 static struct cache_file cache_file;
 
diff --git a/refs.c b/refs.c
index 826ae7ade7..982ebf8ae5 100644
--- a/refs.c
+++ b/refs.c
@@ -151,10 +151,15 @@ static int do_for_each_ref(const char *base, int (*fn)(const char *path, const u
 					break;
 				continue;
 			}
-			if (read_ref(git_path("%s", path), sha1) < 0)
+			if (read_ref(git_path("%s", path), sha1) < 0) {
+				fprintf(stderr, "%s points nowhere!", path);
 				continue;
-			if (!has_sha1_file(sha1))
+			}
+			if (!has_sha1_file(sha1)) {
+				fprintf(stderr, "%s does not point to a valid "
+						"commit object!", path);
 				continue;
+			}
 			retval = fn(path, sha1);
 			if (retval)
 				break;
diff --git a/rev-list.c b/rev-list.c
index 6af8d869ee..8e4d83efba 100644
--- a/rev-list.c
+++ b/rev-list.c
@@ -7,10 +7,9 @@
 #include "diff.h"
 #include "revision.h"
 
-/* bits #0-3 in revision.h */
+/* bits #0-4 in revision.h */
 
-#define COUNTED		(1u << 4)
-#define TMP_MARK	(1u << 5) /* for isolated cases; clean after use */
+#define COUNTED		(1u<<5)
 
 static const char rev_list_usage[] =
 "git-rev-list [OPTION] <commit-id>... [ -- paths... ]\n"
diff --git a/revision.c b/revision.c
index c84f14609b..a3df810076 100644
--- a/revision.c
+++ b/revision.c
@@ -482,6 +482,21 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
 				revs->max_count = atoi(arg + 12);
 				continue;
 			}
+			/* accept -<digit>, like traditilnal "head" */
+			if ((*arg == '-') && isdigit(arg[1])) {
+				revs->max_count = atoi(arg + 1);
+				continue;
+			}
+			if (!strcmp(arg, "-n")) {
+				if (argc <= i + 1)
+					die("-n requires an argument");
+				revs->max_count = atoi(argv[++i]);
+				continue;
+			}
+			if (!strncmp(arg,"-n",2)) {
+				revs->max_count = atoi(arg + 2);
+				continue;
+			}
 			if (!strncmp(arg, "--max-age=", 10)) {
 				revs->max_age = atoi(arg + 10);
 				revs->limited = 1;
@@ -492,6 +507,26 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
 				revs->limited = 1;
 				continue;
 			}
+			if (!strncmp(arg, "--since=", 8)) {
+				revs->max_age = approxidate(arg + 8);
+				revs->limited = 1;
+				continue;
+			}
+			if (!strncmp(arg, "--after=", 8)) {
+				revs->max_age = approxidate(arg + 8);
+				revs->limited = 1;
+				continue;
+			}
+			if (!strncmp(arg, "--before=", 9)) {
+				revs->min_age = approxidate(arg + 9);
+				revs->limited = 1;
+				continue;
+			}
+			if (!strncmp(arg, "--until=", 8)) {
+				revs->min_age = approxidate(arg + 8);
+				revs->limited = 1;
+				continue;
+			}
 			if (!strcmp(arg, "--all")) {
 				handle_all(revs, flags);
 				continue;
diff --git a/revision.h b/revision.h
index 0043c1694c..31e8f61567 100644
--- a/revision.h
+++ b/revision.h
@@ -5,6 +5,7 @@
 #define UNINTERESTING   (1u<<1)
 #define TREECHANGE	(1u<<2)
 #define SHOWN		(1u<<3)
+#define TMP_MARK	(1u<<4) /* for isolated cases; clean after use */
 
 struct rev_info {
 	/* Starting list */
diff --git a/show-branch.c b/show-branch.c
index 5a86ae2f9e..452e63f786 100644
--- a/show-branch.c
+++ b/show-branch.c
@@ -5,7 +5,7 @@
 #include "refs.h"
 
 static const char show_branch_usage[] =
-"git-show-branch [--current] [--all] [--heads] [--tags] [--topo-order] [--more=count | --list | --independent | --merge-base ] [<refs>...]";
+"git-show-branch [--current] [--all] [--heads] [--tags] [--topo-order] [--more=count | --list | --independent | --merge-base ] [--topics] [<refs>...]";
 
 static int default_num = 0;
 static int default_alloc = 0;
@@ -547,6 +547,7 @@ int main(int ac, char **av)
 	int shown_merge_point = 0;
 	int with_current_branch = 0;
 	int head_at = -1;
+	int topics = 0;
 
 	setup_git_directory();
 	git_config(git_show_branch_config);
@@ -587,6 +588,8 @@ int main(int ac, char **av)
 			independent = 1;
 		else if (!strcmp(arg, "--topo-order"))
 			lifo = 1;
+		else if (!strcmp(arg, "--topics"))
+			topics = 1;
 		else if (!strcmp(arg, "--date-order"))
 			lifo = 0;
 		else
@@ -729,6 +732,20 @@ int main(int ac, char **av)
 
 		if (1 < num_rev) {
 			int is_merge = !!(commit->parents && commit->parents->next);
+			if (topics) {
+				int interesting = 0;
+				for (i = 1; i < num_rev; i++) {
+					if ((this_flag &
+					     (1u << (i + REV_SHIFT)))) {
+						interesting = 1;
+						break;
+					}
+				}
+				if (!interesting)
+					continue;
+			}
+
+
 			for (i = 0; i < num_rev; i++) {
 				int mark;
 				if (!(this_flag & (1u << (i + REV_SHIFT))))
diff --git a/t/t8001-annotate.sh b/t/t8001-annotate.sh
new file mode 100755
index 0000000000..cae179436c
--- /dev/null
+++ b/t/t8001-annotate.sh
@@ -0,0 +1,89 @@
+#!/bin/sh
+
+test_description='git-annotate'
+. ./test-lib.sh
+
+test_expect_success \
+    'prepare reference tree' \
+    'echo "1A quick brown fox jumps over the" >file &&
+     echo "lazy dog" >>file &&
+     git add file
+     GIT_AUTHOR_NAME="A" git commit -a -m "Initial."'
+
+test_expect_success \
+    'check all lines blamed on A' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "A") == 2 ]'
+
+test_expect_success \
+    'Setup new lines blamed on B' \
+    'echo "2A quick brown fox jumps over the" >>file &&
+     echo "lazy dog" >> file &&
+     GIT_AUTHOR_NAME="B" git commit -a -m "Second."'
+
+test_expect_success \
+    'Two lines blamed on A' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "A") == 2 ]'
+
+test_expect_success \
+    'Two lines blamed on B' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "B") == 2 ]'
+
+test_expect_success \
+    'merge-setup part 1' \
+    'git checkout -b branch1 master &&
+     echo "3A slow green fox jumps into the" >> file &&
+     echo "well." >> file &&
+     GIT_AUTHOR_NAME="B1" git commit -a -m "Branch1-1"'
+
+test_expect_success \
+    'Two lines blamed on A' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^A$") == 2 ]'
+
+test_expect_success \
+    'Two lines blamed on B' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^B$") == 2 ]'
+
+test_expect_success \
+    'Two lines blamed on B1' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^B1$") == 2 ]'
+
+test_expect_success \
+    'merge-setup part 2' \
+    'git checkout -b branch2 master &&
+     sed -i -e "s/2A quick brown/4A quick brown lazy dog/" file &&
+     GIT_AUTHOR_NAME="B2" git commit -a -m "Branch2-1"'
+
+test_expect_success \
+    'Two lines blamed on A' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^A$") == 2 ]'
+
+test_expect_success \
+    'One line blamed on B' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^B$") == 1 ]'
+
+test_expect_success \
+    'One line blamed on B2' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^B2$") == 1 ]'
+
+
+test_expect_success \
+    'merge-setup part 3' \
+    'git pull . branch1'
+
+test_expect_success \
+    'Two lines blamed on A' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^A$") == 2 ]'
+
+test_expect_success \
+    'One line blamed on B' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^B$") == 1 ]'
+
+test_expect_success \
+    'Two lines blamed on B1' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^B1$") == 2 ]'
+
+test_expect_success \
+    'One line blamed on B2' \
+    '[ $(git annotate file | awk "{print \$3}" | grep -c "^B2$") == 1 ]'
+
+test_done
diff --git a/test-delta.c b/test-delta.c
index 1be8ee0c72..89eb68ed21 100644
--- a/test-delta.c
+++ b/test-delta.c
@@ -63,7 +63,7 @@ int main(int argc, char *argv[])
 	if (argv[1][1] == 'd')
 		out_buf = diff_delta(from_buf, from_size,
 				     data_buf, data_size,
-				     &out_size, 0);
+				     &out_size, 0, NULL);
 	else
 		out_buf = patch_delta(from_buf, from_size,
 				      data_buf, data_size,