From: Junio C Hamano <junkio@cox.net>
Date: Wed, 17 May 2006 22:47:33 +0000 (-0700)
Subject: Merge branch 'jc/apply'
X-Git-Tag: v1.4.1-rc1~92^2~2
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/53684bba4921b5a07d977ef794689de111c645b5?hp=b7627278e200d8a80df6ee437b1a01d88f2b4883

Merge branch 'jc/apply'

* jc/apply:
git-am: use apply --cached
apply --cached: apply a patch without using working tree.
apply --numstat: show new name, not old name.
---

diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index c183dc9da0..f523ec2fbe 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -10,6 +10,10 @@
 --stat::
 	Generate a diffstat instead of a patch.
 
+--summary::
+	Output a condensed summary of extended header information
+	such as creations, renames and mode changes.
+
 --patch-with-stat::
 	Generate patch and prepend its diffstat.
 
diff --git a/Documentation/git-grep.txt b/Documentation/git-grep.txt
index d55456ae93..74102b7944 100644
--- a/Documentation/git-grep.txt
+++ b/Documentation/git-grep.txt
@@ -8,43 +8,82 @@ git-grep - Print lines matching a pattern
 
 SYNOPSIS
 --------
-'git-grep' [<option>...] [-e] <pattern> [--] [<path>...]
+[verse]
+'git-grep' [--cached]
+	   [-a | --text] [-I] [-i | --ignore-case] [-w | --word-regexp]
+	   [-v | --invert-match]
+	   [-E | --extended-regexp] [-G | --basic-regexp] [-F | --fixed-strings]
+	   [-n] [-l | --files-with-matches] [-L | --files-without-match]
+	   [-c | --count]
+	   [-A <post-context>] [-B <pre-context>] [-C <context>]
+	   [-f <file>] [-e <pattern>]
+	   [<tree>...]
+	   [--] [<path>...]
 
 DESCRIPTION
 -----------
-Searches list of files `git-ls-files` produces for lines
-containing a match to the given pattern.
+Look for specified patterns in the working tree files, blobs
+registered in the index file, or given tree objects.
 
 
 OPTIONS
 -------
-`--`::
-	Signals the end of options; the rest of the parameters
-	are <path> limiters.
+--cached::
+	Instead of searching in the working tree files, check
+	the blobs registerd in the index file.
+
+-a | --text::
+	Process binary files as if they were text.
+
+-i | --ignore-case::
+	Ignore case differences between the patterns and the
+	files.
+
+-w | --word-regexp::
+	Match the pattern only at word boundary (either begin at the
+	beginning of a line, or preceded by a non-word character; end at
+	the end of a line or followed by a non-word character).
+
+-v | --invert-match::
+	Select non-matching lines.
+
+-E | --extended-regexp | -G | --basic-regexp::
+	Use POSIX extended/basic regexp for patterns.  Default
+	is to use basic regexp.
 
-<option>...::
-	Either an option to pass to `grep` or `git-ls-files`.
-+
-The following are the specific `git-ls-files` options
-that may be given: `-o`, `--cached`, `--deleted`, `--others`,
-`--killed`, `--ignored`, `--modified`, `--exclude=\*`,
-`--exclude-from=\*`, and `--exclude-per-directory=\*`.
-+
-All other options will be passed to `grep`.
+-n::
+	Prefix the line number to matching lines.
 
-<pattern>::
-	The pattern to look for.  The first non option is taken
-	as the pattern; if your pattern begins with a dash, use
-	`-e <pattern>`.
+-l | --files-with-matches | -L | --files-without-match::
+	Instead of showing every matched line, show only the
+	names of files that contain (or do not contain) matches.
 
-<path>...::
-	Optional paths to limit the set of files to be searched;
-	passed to `git-ls-files`.
+-c | --count::
+	Instead of showing every matched line, show the number of
+	lines that match.
+
+-[ABC] <context>::
+	Show `context` trailing (`A` -- after), or leading (`B`
+	-- before), or both (`C` -- context) lines, and place a
+	line containing `--` between continguous groups of
+	matches.
+
+-f <file>::
+	Read patterns from <file>, one per line.
+
+`<tree>...`::
+	Search blobs in the trees for specified patterns.
+
+`--`::
+	Signals the end of options; the rest of the parameters
+	are <path> limiters.
 
 
 Author
 ------
-Written by Linus Torvalds <torvalds@osdl.org>
+Originally written by Linus Torvalds <torvalds@osdl.org>, later
+revamped by Junio C Hamano.
+
 
 Documentation
 --------------
diff --git a/Documentation/git-merge-base.txt b/Documentation/git-merge-base.txt
index d1d56f194a..6099be2add 100644
--- a/Documentation/git-merge-base.txt
+++ b/Documentation/git-merge-base.txt
@@ -8,16 +8,26 @@ git-merge-base - Finds as good a common ancestor as possible for a merge
 
 SYNOPSIS
 --------
-'git-merge-base' <commit> <commit>
+'git-merge-base' [--all] <commit> <commit>
 
 DESCRIPTION
 -----------
-"git-merge-base" finds as good a common ancestor as possible. Given a
-selection of equally good common ancestors it should not be relied on
-to decide in any particular way.
+
+"git-merge-base" finds as good a common ancestor as possible between
+the two commits. That is, given two commits A and B 'git-merge-base A
+B' will output a commit which is reachable from both A and B through
+the parent relationship.
+
+Given a selection of equally good common ancestors it should not be
+relied on to decide in any particular way.
 
 The "git-merge-base" algorithm is still in flux - use the source...
 
+OPTIONS
+-------
+--all::
+	Output all common ancestors for the two commits instead of
+	just one.
 
 Author
 ------
diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 1b482abecd..08ee4aabaf 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -9,9 +9,7 @@ SYNOPSIS
 --------
 'git-rebase' [--onto <newbase>] <upstream> [<branch>]
 
-'git-rebase' --continue
-
-'git-rebase' --abort
+'git-rebase' --continue | --skip | --abort
 
 DESCRIPTION
 -----------
@@ -23,9 +21,10 @@ not exist in the <upstream> branch.
 
 It is possible that a merge failure will prevent this process from being
 completely automatic.  You will have to resolve any such merge failure
-and run `git rebase --continue`.  If you can not resolve the merge
-failure, running `git rebase --abort` will restore the original <branch>
-and remove the working files found in the .dotest directory.
+and run `git rebase --continue`.  Another option is to bypass the commit
+that caused the merge failure with `git rebase --skip`.  To restore the
+original <branch> and remove the .dotest working files, use the command
+`git rebase --abort` instead.
 
 Note that if <branch> is not specified on the command line, the currently
 checked out branch is used.
diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt
index 8b95df0c6e..ab896fcf83 100644
--- a/Documentation/git-rev-parse.txt
+++ b/Documentation/git-rev-parse.txt
@@ -67,6 +67,15 @@ OPTIONS
 --all::
 	Show all refs found in `$GIT_DIR/refs`.
 
+--branches::
+	Show branch refs found in `$GIT_DIR/refs/heads`.
+
+--tags::
+	Show tag refs found in `$GIT_DIR/refs/tags`.
+
+--remotes::
+	Show tag refs found in `$GIT_DIR/refs/remotes`.
+
 --show-prefix::
 	When the command is invoked from a subdirectory, show the
 	path of the current directory relative to the top-level
diff --git a/Makefile b/Makefile
index 93918a0377..9ba608c805 100644
--- a/Makefile
+++ b/Makefile
@@ -124,7 +124,7 @@ SCRIPT_SH = \
 	git-tag.sh git-verify-tag.sh \
 	git-applymbox.sh git-applypatch.sh git-am.sh \
 	git-merge.sh git-merge-stupid.sh git-merge-octopus.sh \
-	git-merge-resolve.sh git-merge-ours.sh git-grep.sh \
+	git-merge-resolve.sh git-merge-ours.sh \
 	git-lost-found.sh
 
 SCRIPT_PERL = \
@@ -169,7 +169,8 @@ PROGRAMS = \
 	git-describe$X git-merge-tree$X git-blame$X git-imap-send$X
 
 BUILT_INS = git-log$X git-whatchanged$X git-show$X \
-	git-count-objects$X git-diff$X git-push$X
+	git-count-objects$X git-diff$X git-push$X \
+	git-grep$X
 
 # what 'all' will build and 'install' will install, in gitexecdir
 ALL_PROGRAMS = $(PROGRAMS) $(SIMPLE_PROGRAMS) $(SCRIPTS)
@@ -216,7 +217,8 @@ LIB_OBJS = \
 	$(DIFF_OBJS)
 
 BUILTIN_OBJS = \
-	builtin-log.o builtin-help.o builtin-count.o builtin-diff.o builtin-push.o
+	builtin-log.o builtin-help.o builtin-count.o builtin-diff.o builtin-push.o \
+	builtin-grep.o
 
 GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
 LIBS = $(GITLIBS) -lz
@@ -286,7 +288,9 @@ ifeq ($(uname_S),OpenBSD)
 	ALL_LDFLAGS += -L/usr/local/lib
 endif
 ifeq ($(uname_S),NetBSD)
-	NEEDS_LIBICONV = YesPlease
+	ifeq ($(shell expr "$(uname_R)" : '[01]\.'),2)
+		NEEDS_LIBICONV = YesPlease
+	endif
 	ALL_CFLAGS += -I/usr/pkg/include
 	ALL_LDFLAGS += -L/usr/pkg/lib -Wl,-rpath,/usr/pkg/lib
 endif
diff --git a/builtin-diff.c b/builtin-diff.c
index d3ac581f29..b0c9cade02 100644
--- a/builtin-diff.c
+++ b/builtin-diff.c
@@ -132,7 +132,9 @@ static int builtin_diff_blobs(struct rev_info *revs,
 			      int argc, const char **argv,
 			      struct blobinfo *blob)
 {
-	/* Blobs */
+	/* Blobs: the arguments are reversed when setup_revisions()
+	 * picked them up.
+	 */
 	unsigned mode = canon_mode(S_IFREG | 0644);
 
 	while (1 < argc) {
@@ -145,8 +147,8 @@ static int builtin_diff_blobs(struct rev_info *revs,
 	}
 	stuff_change(&revs->diffopt,
 		     mode, mode,
-		     blob[0].sha1, blob[1].sha1,
-		     blob[1].name, blob[1].name);
+		     blob[1].sha1, blob[0].sha1,
+		     blob[0].name, blob[0].name);
 	diffcore_std(&revs->diffopt);
 	diff_flush(&revs->diffopt);
 	return 0;
diff --git a/builtin-grep.c b/builtin-grep.c
new file mode 100644
index 0000000000..66111de514
--- /dev/null
+++ b/builtin-grep.c
@@ -0,0 +1,885 @@
+/*
+ * Builtin "git grep"
+ *
+ * Copyright (c) 2006 Junio C Hamano
+ */
+#include "cache.h"
+#include "blob.h"
+#include "tree.h"
+#include "commit.h"
+#include "tag.h"
+#include "tree-walk.h"
+#include "builtin.h"
+#include <regex.h>
+#include <fnmatch.h>
+#include <sys/wait.h>
+
+/*
+ * git grep pathspecs are somewhat different from diff-tree pathspecs;
+ * pathname wildcards are allowed.
+ */
+static int pathspec_matches(const char **paths, const char *name)
+{
+	int namelen, i;
+	if (!paths || !*paths)
+		return 1;
+	namelen = strlen(name);
+	for (i = 0; paths[i]; i++) {
+		const char *match = paths[i];
+		int matchlen = strlen(match);
+		const char *cp, *meta;
+
+		if ((matchlen <= namelen) &&
+		    !strncmp(name, match, matchlen) &&
+		    (match[matchlen-1] == '/' ||
+		     name[matchlen] == '\0' || name[matchlen] == '/'))
+			return 1;
+		if (!fnmatch(match, name, 0))
+			return 1;
+		if (name[namelen-1] != '/')
+			continue;
+
+		/* We are being asked if the directory ("name") is worth
+		 * descending into.
+		 *
+		 * Find the longest leading directory name that does
+		 * not have metacharacter in the pathspec; the name
+		 * we are looking at must overlap with that directory.
+		 */
+		for (cp = match, meta = NULL; cp - match < matchlen; cp++) {
+			char ch = *cp;
+			if (ch == '*' || ch == '[' || ch == '?') {
+				meta = cp;
+				break;
+			}
+		}
+		if (!meta)
+			meta = cp; /* fully literal */
+
+		if (namelen <= meta - match) {
+			/* Looking at "Documentation/" and
+			 * the pattern says "Documentation/howto/", or
+			 * "Documentation/diff*.txt".  The name we
+			 * have should match prefix.
+			 */
+			if (!memcmp(match, name, namelen))
+				return 1;
+			continue;
+		}
+
+		if (meta - match < namelen) {
+			/* Looking at "Documentation/howto/" and
+			 * the pattern says "Documentation/h*";
+			 * match up to "Do.../h"; this avoids descending
+			 * into "Documentation/technical/".
+			 */
+			if (!memcmp(match, name, meta - match))
+				return 1;
+			continue;
+		}
+	}
+	return 0;
+}
+
+struct grep_pat {
+	struct grep_pat *next;
+	const char *origin;
+	int no;
+	const char *pattern;
+	regex_t regexp;
+};
+
+struct grep_opt {
+	struct grep_pat *pattern_list;
+	struct grep_pat **pattern_tail;
+	regex_t regexp;
+	unsigned linenum:1;
+	unsigned invert:1;
+	unsigned name_only:1;
+	unsigned unmatch_name_only:1;
+	unsigned count:1;
+	unsigned word_regexp:1;
+	unsigned fixed:1;
+#define GREP_BINARY_DEFAULT	0
+#define GREP_BINARY_NOMATCH	1
+#define GREP_BINARY_TEXT	2
+	unsigned binary:2;
+	int regflags;
+	unsigned pre_context;
+	unsigned post_context;
+};
+
+static void add_pattern(struct grep_opt *opt, const char *pat,
+			const char *origin, int no)
+{
+	struct grep_pat *p = xcalloc(1, sizeof(*p));
+	p->pattern = pat;
+	p->origin = origin;
+	p->no = no;
+	*opt->pattern_tail = p;
+	opt->pattern_tail = &p->next;
+	p->next = NULL;
+}
+
+static void compile_patterns(struct grep_opt *opt)
+{
+	struct grep_pat *p;
+	for (p = opt->pattern_list; p; p = p->next) {
+		int err = regcomp(&p->regexp, p->pattern, opt->regflags);
+		if (err) {
+			char errbuf[1024];
+			char where[1024];
+			if (p->no)
+				sprintf(where, "In '%s' at %d, ",
+					p->origin, p->no);
+			else if (p->origin)
+				sprintf(where, "%s, ", p->origin);
+			else
+				where[0] = 0;
+			regerror(err, &p->regexp, errbuf, 1024);
+			regfree(&p->regexp);
+			die("%s'%s': %s", where, p->pattern, errbuf);
+		}
+	}
+}
+
+static char *end_of_line(char *cp, unsigned long *left)
+{
+	unsigned long l = *left;
+	while (l && *cp != '\n') {
+		l--;
+		cp++;
+	}
+	*left = l;
+	return cp;
+}
+
+static int word_char(char ch)
+{
+	return isalnum(ch) || ch == '_';
+}
+
+static void show_line(struct grep_opt *opt, const char *bol, const char *eol,
+		      const char *name, unsigned lno, char sign)
+{
+	printf("%s%c", name, sign);
+	if (opt->linenum)
+		printf("%d%c", lno, sign);
+	printf("%.*s\n", (int)(eol-bol), bol);
+}
+
+/*
+ * NEEDSWORK: share code with diff.c
+ */
+#define FIRST_FEW_BYTES 8000
+static int buffer_is_binary(const char *ptr, unsigned long size)
+{
+	if (FIRST_FEW_BYTES < size)
+		size = FIRST_FEW_BYTES;
+	if (memchr(ptr, 0, size))
+		return 1;
+	return 0;
+}
+
+static int fixmatch(const char *pattern, char *line, regmatch_t *match)
+{
+	char *hit = strstr(line, pattern);
+	if (!hit) {
+		match->rm_so = match->rm_eo = -1;
+		return REG_NOMATCH;
+	}
+	else {
+		match->rm_so = hit - line;
+		match->rm_eo = match->rm_so + strlen(pattern);
+		return 0;
+	}
+}
+
+static int grep_buffer(struct grep_opt *opt, const char *name,
+		       char *buf, unsigned long size)
+{
+	char *bol = buf;
+	unsigned long left = size;
+	unsigned lno = 1;
+	struct pre_context_line {
+		char *bol;
+		char *eol;
+	} *prev = NULL, *pcl;
+	unsigned last_hit = 0;
+	unsigned last_shown = 0;
+	int binary_match_only = 0;
+	const char *hunk_mark = "";
+	unsigned count = 0;
+
+	if (buffer_is_binary(buf, size)) {
+		switch (opt->binary) {
+		case GREP_BINARY_DEFAULT:
+			binary_match_only = 1;
+			break;
+		case GREP_BINARY_NOMATCH:
+			return 0; /* Assume unmatch */
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (opt->pre_context)
+		prev = xcalloc(opt->pre_context, sizeof(*prev));
+	if (opt->pre_context || opt->post_context)
+		hunk_mark = "--\n";
+
+	while (left) {
+		regmatch_t pmatch[10];
+		char *eol, ch;
+		int hit = 0;
+		struct grep_pat *p;
+
+		eol = end_of_line(bol, &left);
+		ch = *eol;
+		*eol = 0;
+
+		for (p = opt->pattern_list; p; p = p->next) {
+			if (!opt->fixed) {
+				regex_t *exp = &p->regexp;
+				hit = !regexec(exp, bol, ARRAY_SIZE(pmatch),
+					       pmatch, 0);
+			}
+			else {
+				hit = !fixmatch(p->pattern, bol, pmatch);
+			}
+
+			if (hit && opt->word_regexp) {
+				/* Match beginning must be either
+				 * beginning of the line, or at word
+				 * boundary (i.e. the last char must
+				 * not be alnum or underscore).
+				 */
+				if ((pmatch[0].rm_so < 0) ||
+				    (eol - bol) <= pmatch[0].rm_so ||
+				    (pmatch[0].rm_eo < 0) ||
+				    (eol - bol) < pmatch[0].rm_eo)
+					die("regexp returned nonsense");
+				if (pmatch[0].rm_so != 0 &&
+				    word_char(bol[pmatch[0].rm_so-1]))
+					hit = 0;
+				if (pmatch[0].rm_eo != (eol-bol) &&
+				    word_char(bol[pmatch[0].rm_eo]))
+					hit = 0;
+			}
+			if (hit)
+				break;
+		}
+		/* "grep -v -e foo -e bla" should list lines
+		 * that do not have either, so inversion should
+		 * be done outside.
+		 */
+		if (opt->invert)
+			hit = !hit;
+		if (opt->unmatch_name_only) {
+			if (hit)
+				return 0;
+			goto next_line;
+		}
+		if (hit) {
+			count++;
+			if (binary_match_only) {
+				printf("Binary file %s matches\n", name);
+				return 1;
+			}
+			if (opt->name_only) {
+				printf("%s\n", name);
+				return 1;
+			}
+			/* Hit at this line.  If we haven't shown the
+			 * pre-context lines, we would need to show them.
+			 * When asked to do "count", this still show
+			 * the context which is nonsense, but the user
+			 * deserves to get that ;-).
+			 */
+			if (opt->pre_context) {
+				unsigned from;
+				if (opt->pre_context < lno)
+					from = lno - opt->pre_context;
+				else
+					from = 1;
+				if (from <= last_shown)
+					from = last_shown + 1;
+				if (last_shown && from != last_shown + 1)
+					printf(hunk_mark);
+				while (from < lno) {
+					pcl = &prev[lno-from-1];
+					show_line(opt, pcl->bol, pcl->eol,
+						  name, from, '-');
+					from++;
+				}
+				last_shown = lno-1;
+			}
+			if (last_shown && lno != last_shown + 1)
+				printf(hunk_mark);
+			if (!opt->count)
+				show_line(opt, bol, eol, name, lno, ':');
+			last_shown = last_hit = lno;
+		}
+		else if (last_hit &&
+			 lno <= last_hit + opt->post_context) {
+			/* If the last hit is within the post context,
+			 * we need to show this line.
+			 */
+			if (last_shown && lno != last_shown + 1)
+				printf(hunk_mark);
+			show_line(opt, bol, eol, name, lno, '-');
+			last_shown = lno;
+		}
+		if (opt->pre_context) {
+			memmove(prev+1, prev,
+				(opt->pre_context-1) * sizeof(*prev));
+			prev->bol = bol;
+			prev->eol = eol;
+		}
+
+	next_line:
+		*eol = ch;
+		bol = eol + 1;
+		if (!left)
+			break;
+		left--;
+		lno++;
+	}
+
+	if (opt->unmatch_name_only) {
+		/* We did not see any hit, so we want to show this */
+		printf("%s\n", name);
+		return 1;
+	}
+
+	/* NEEDSWORK:
+	 * The real "grep -c foo *.c" gives many "bar.c:0" lines,
+	 * which feels mostly useless but sometimes useful.  Maybe
+	 * make it another option?  For now suppress them.
+	 */
+	if (opt->count && count)
+		printf("%s:%u\n", name, count);
+	return !!last_hit;
+}
+
+static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, const char *name)
+{
+	unsigned long size;
+	char *data;
+	char type[20];
+	int hit;
+	data = read_sha1_file(sha1, type, &size);
+	if (!data) {
+		error("'%s': unable to read %s", name, sha1_to_hex(sha1));
+		return 0;
+	}
+	hit = grep_buffer(opt, name, data, size);
+	free(data);
+	return hit;
+}
+
+static int grep_file(struct grep_opt *opt, const char *filename)
+{
+	struct stat st;
+	int i;
+	char *data;
+	if (lstat(filename, &st) < 0) {
+	err_ret:
+		if (errno != ENOENT)
+			error("'%s': %s", filename, strerror(errno));
+		return 0;
+	}
+	if (!st.st_size)
+		return 0; /* empty file -- no grep hit */
+	if (!S_ISREG(st.st_mode))
+		return 0;
+	i = open(filename, O_RDONLY);
+	if (i < 0)
+		goto err_ret;
+	data = xmalloc(st.st_size + 1);
+	if (st.st_size != xread(i, data, st.st_size)) {
+		error("'%s': short read %s", filename, strerror(errno));
+		close(i);
+		free(data);
+		return 0;
+	}
+	close(i);
+	i = grep_buffer(opt, filename, data, st.st_size);
+	free(data);
+	return i;
+}
+
+static int exec_grep(int argc, const char **argv)
+{
+	pid_t pid;
+	int status;
+
+	argv[argc] = NULL;
+	pid = fork();
+	if (pid < 0)
+		return pid;
+	if (!pid) {
+		execvp("grep", (char **) argv);
+		exit(255);
+	}
+	while (waitpid(pid, &status, 0) < 0) {
+		if (errno == EINTR)
+			continue;
+		return -1;
+	}
+	if (WIFEXITED(status)) {
+		if (!WEXITSTATUS(status))
+			return 1;
+		return 0;
+	}
+	return -1;
+}
+
+#define MAXARGS 1000
+#define ARGBUF 4096
+#define push_arg(a) do { \
+	if (nr < MAXARGS) argv[nr++] = (a); \
+	else die("maximum number of args exceeded"); \
+	} while (0)
+
+static int external_grep(struct grep_opt *opt, const char **paths, int cached)
+{
+	int i, nr, argc, hit, len;
+	const char *argv[MAXARGS+1];
+	char randarg[ARGBUF];
+	char *argptr = randarg;
+	struct grep_pat *p;
+
+	len = nr = 0;
+	push_arg("grep");
+	push_arg("-H");
+	if (opt->fixed)
+		push_arg("-F");
+	if (opt->linenum)
+		push_arg("-n");
+	if (opt->regflags & REG_EXTENDED)
+		push_arg("-E");
+	if (opt->word_regexp)
+		push_arg("-w");
+	if (opt->name_only)
+		push_arg("-l");
+	if (opt->unmatch_name_only)
+		push_arg("-L");
+	if (opt->count)
+		push_arg("-c");
+	if (opt->post_context || opt->pre_context) {
+		if (opt->post_context != opt->pre_context) {
+			if (opt->pre_context) {
+				push_arg("-B");
+				len += snprintf(argptr, sizeof(randarg)-len,
+						"%u", opt->pre_context);
+				if (sizeof(randarg) <= len)
+					die("maximum length of args exceeded");
+				push_arg(argptr);
+				argptr += len;
+			}
+			if (opt->post_context) {
+				push_arg("-A");
+				len += snprintf(argptr, sizeof(randarg)-len,
+						"%u", opt->post_context);
+				if (sizeof(randarg) <= len)
+					die("maximum length of args exceeded");
+				push_arg(argptr);
+				argptr += len;
+			}
+		}
+		else {
+			push_arg("-C");
+			len += snprintf(argptr, sizeof(randarg)-len,
+					"%u", opt->post_context);
+			if (sizeof(randarg) <= len)
+				die("maximum length of args exceeded");
+			push_arg(argptr);
+			argptr += len;
+		}
+	}
+	for (p = opt->pattern_list; p; p = p->next) {
+		push_arg("-e");
+		push_arg(p->pattern);
+	}
+	push_arg("--");
+
+	hit = 0;
+	argc = nr;
+	for (i = 0; i < active_nr; i++) {
+		struct cache_entry *ce = active_cache[i];
+		if (ce_stage(ce) || !S_ISREG(ntohl(ce->ce_mode)))
+			continue;
+		if (!pathspec_matches(paths, ce->name))
+			continue;
+		argv[argc++] = ce->name;
+		if (argc < MAXARGS)
+			continue;
+		hit += exec_grep(argc, argv);
+		argc = nr;
+	}
+	if (argc > nr)
+		hit += exec_grep(argc, argv);
+	return 0;
+}
+
+static int grep_cache(struct grep_opt *opt, const char **paths, int cached)
+{
+	int hit = 0;
+	int nr;
+	read_cache();
+
+#ifdef __unix__
+	/*
+	 * Use the external "grep" command for the case where
+	 * we grep through the checked-out files. It tends to
+	 * be a lot more optimized
+	 */
+	if (!cached) {
+		hit = external_grep(opt, paths, cached);
+		if (hit >= 0)
+			return hit;
+	}
+#endif
+
+	for (nr = 0; nr < active_nr; nr++) {
+		struct cache_entry *ce = active_cache[nr];
+		if (ce_stage(ce) || !S_ISREG(ntohl(ce->ce_mode)))
+			continue;
+		if (!pathspec_matches(paths, ce->name))
+			continue;
+		if (cached)
+			hit |= grep_sha1(opt, ce->sha1, ce->name);
+		else
+			hit |= grep_file(opt, ce->name);
+	}
+	return hit;
+}
+
+static int grep_tree(struct grep_opt *opt, const char **paths,
+		     struct tree_desc *tree,
+		     const char *tree_name, const char *base)
+{
+	unsigned mode;
+	int len;
+	int hit = 0;
+	const char *path;
+	const unsigned char *sha1;
+	char *down;
+	char *path_buf = xmalloc(PATH_MAX + strlen(tree_name) + 100);
+
+	if (tree_name[0]) {
+		int offset = sprintf(path_buf, "%s:", tree_name);
+		down = path_buf + offset;
+		strcat(down, base);
+	}
+	else {
+		down = path_buf;
+		strcpy(down, base);
+	}
+	len = strlen(path_buf);
+
+	while (tree->size) {
+		int pathlen;
+		sha1 = tree_entry_extract(tree, &path, &mode);
+		pathlen = strlen(path);
+		strcpy(path_buf + len, path);
+
+		if (S_ISDIR(mode))
+			/* Match "abc/" against pathspec to
+			 * decide if we want to descend into "abc"
+			 * directory.
+			 */
+			strcpy(path_buf + len + pathlen, "/");
+
+		if (!pathspec_matches(paths, down))
+			;
+		else if (S_ISREG(mode))
+			hit |= grep_sha1(opt, sha1, path_buf);
+		else if (S_ISDIR(mode)) {
+			char type[20];
+			struct tree_desc sub;
+			void *data;
+			data = read_sha1_file(sha1, type, &sub.size);
+			if (!data)
+				die("unable to read tree (%s)",
+				    sha1_to_hex(sha1));
+			sub.buf = data;
+			hit |= grep_tree(opt, paths, &sub, tree_name, down);
+			free(data);
+		}
+		update_tree_entry(tree);
+	}
+	return hit;
+}
+
+static int grep_object(struct grep_opt *opt, const char **paths,
+		       struct object *obj, const char *name)
+{
+	if (!strcmp(obj->type, blob_type))
+		return grep_sha1(opt, obj->sha1, name);
+	if (!strcmp(obj->type, commit_type) ||
+	    !strcmp(obj->type, tree_type)) {
+		struct tree_desc tree;
+		void *data;
+		int hit;
+		data = read_object_with_reference(obj->sha1, tree_type,
+						  &tree.size, NULL);
+		if (!data)
+			die("unable to read tree (%s)", sha1_to_hex(obj->sha1));
+		tree.buf = data;
+		hit = grep_tree(opt, paths, &tree, name, "");
+		free(data);
+		return hit;
+	}
+	die("unable to grep from object of type %s", obj->type);
+}
+
+static const char builtin_grep_usage[] =
+"git-grep <option>* <rev>* [-e] <pattern> [<path>...]";
+
+int cmd_grep(int argc, const char **argv, char **envp)
+{
+	int hit = 0;
+	int cached = 0;
+	int seen_dashdash = 0;
+	struct grep_opt opt;
+	struct object_list *list, **tail, *object_list = NULL;
+	const char *prefix = setup_git_directory();
+	const char **paths = NULL;
+	int i;
+
+	memset(&opt, 0, sizeof(opt));
+	opt.pattern_tail = &opt.pattern_list;
+	opt.regflags = REG_NEWLINE;
+
+	/*
+	 * If there is no -- then the paths must exist in the working
+	 * tree.  If there is no explicit pattern specified with -e or
+	 * -f, we take the first unrecognized non option to be the
+	 * pattern, but then what follows it must be zero or more
+	 * valid refs up to the -- (if exists), and then existing
+	 * paths.  If there is an explicit pattern, then the first
+	 * unrecocnized non option is the beginning of the refs list
+	 * that continues up to the -- (if exists), and then paths.
+	 */
+
+	tail = &object_list;
+	while (1 < argc) {
+		const char *arg = argv[1];
+		argc--; argv++;
+		if (!strcmp("--cached", arg)) {
+			cached = 1;
+			continue;
+		}
+		if (!strcmp("-a", arg) ||
+		    !strcmp("--text", arg)) {
+			opt.binary = GREP_BINARY_TEXT;
+			continue;
+		}
+		if (!strcmp("-i", arg) ||
+		    !strcmp("--ignore-case", arg)) {
+			opt.regflags |= REG_ICASE;
+			continue;
+		}
+		if (!strcmp("-I", arg)) {
+			opt.binary = GREP_BINARY_NOMATCH;
+			continue;
+		}
+		if (!strcmp("-v", arg) ||
+		    !strcmp("--invert-match", arg)) {
+			opt.invert = 1;
+			continue;
+		}
+		if (!strcmp("-E", arg) ||
+		    !strcmp("--extended-regexp", arg)) {
+			opt.regflags |= REG_EXTENDED;
+			continue;
+		}
+		if (!strcmp("-F", arg) ||
+		    !strcmp("--fixed-strings", arg)) {
+			opt.fixed = 1;
+			continue;
+		}
+		if (!strcmp("-G", arg) ||
+		    !strcmp("--basic-regexp", arg)) {
+			opt.regflags &= ~REG_EXTENDED;
+			continue;
+		}
+		if (!strcmp("-n", arg)) {
+			opt.linenum = 1;
+			continue;
+		}
+		if (!strcmp("-H", arg)) {
+			/* We always show the pathname, so this
+			 * is a noop.
+			 */
+			continue;
+		}
+		if (!strcmp("-l", arg) ||
+		    !strcmp("--files-with-matches", arg)) {
+			opt.name_only = 1;
+			continue;
+		}
+		if (!strcmp("-L", arg) ||
+		    !strcmp("--files-without-match", arg)) {
+			opt.unmatch_name_only = 1;
+			continue;
+		}
+		if (!strcmp("-c", arg) ||
+		    !strcmp("--count", arg)) {
+			opt.count = 1;
+			continue;
+		}
+		if (!strcmp("-w", arg) ||
+		    !strcmp("--word-regexp", arg)) {
+			opt.word_regexp = 1;
+			continue;
+		}
+		if (!strncmp("-A", arg, 2) ||
+		    !strncmp("-B", arg, 2) ||
+		    !strncmp("-C", arg, 2) ||
+		    (arg[0] == '-' && '1' <= arg[1] && arg[1] <= '9')) {
+			unsigned num;
+			const char *scan;
+			switch (arg[1]) {
+			case 'A': case 'B': case 'C':
+				if (!arg[2]) {
+					if (argc <= 1)
+						usage(builtin_grep_usage);
+					scan = *++argv;
+					argc--;
+				}
+				else
+					scan = arg + 2;
+				break;
+			default:
+				scan = arg + 1;
+				break;
+			}
+			if (sscanf(scan, "%u", &num) != 1)
+				usage(builtin_grep_usage);
+			switch (arg[1]) {
+			case 'A':
+				opt.post_context = num;
+				break;
+			default:
+			case 'C':
+				opt.post_context = num;
+			case 'B':
+				opt.pre_context = num;
+				break;
+			}
+			continue;
+		}
+		if (!strcmp("-f", arg)) {
+			FILE *patterns;
+			int lno = 0;
+			char buf[1024];
+			if (argc <= 1)
+				usage(builtin_grep_usage);
+			patterns = fopen(argv[1], "r");
+			if (!patterns)
+				die("'%s': %s", argv[1], strerror(errno));
+			while (fgets(buf, sizeof(buf), patterns)) {
+				int len = strlen(buf);
+				if (buf[len-1] == '\n')
+					buf[len-1] = 0;
+				/* ignore empty line like grep does */
+				if (!buf[0])
+					continue;
+				add_pattern(&opt, strdup(buf), argv[1], ++lno);
+			}
+			fclose(patterns);
+			argv++;
+			argc--;
+			continue;
+		}
+		if (!strcmp("-e", arg)) {
+			if (1 < argc) {
+				add_pattern(&opt, argv[1], "-e option", 0);
+				argv++;
+				argc--;
+				continue;
+			}
+			usage(builtin_grep_usage);
+		}
+		if (!strcmp("--", arg))
+			break;
+		if (*arg == '-')
+			usage(builtin_grep_usage);
+
+		/* First unrecognized non-option token */
+		if (!opt.pattern_list) {
+			add_pattern(&opt, arg, "command line", 0);
+			break;
+		}
+		else {
+			/* We are looking at the first path or rev;
+			 * it is found at argv[1] after leaving the
+			 * loop.
+			 */
+			argc++; argv--;
+			break;
+		}
+	}
+
+	if (!opt.pattern_list)
+		die("no pattern given.");
+	if ((opt.regflags != REG_NEWLINE) && opt.fixed)
+		die("cannot mix --fixed-strings and regexp");
+	if (!opt.fixed)
+		compile_patterns(&opt);
+
+	/* Check revs and then paths */
+	for (i = 1; i < argc; i++) {
+		const char *arg = argv[i];
+		unsigned char sha1[20];
+		/* Is it a rev? */
+		if (!get_sha1(arg, sha1)) {
+			struct object *object = parse_object(sha1);
+			struct object_list *elem;
+			if (!object)
+				die("bad object %s", arg);
+			elem = object_list_insert(object, tail);
+			elem->name = arg;
+			tail = &elem->next;
+			continue;
+		}
+		if (!strcmp(arg, "--")) {
+			i++;
+			seen_dashdash = 1;
+		}
+		break;
+	}
+
+	/* The rest are paths */
+	if (!seen_dashdash) {
+		int j;
+		for (j = i; j < argc; j++)
+			verify_filename(prefix, argv[j]);
+	}
+
+	if (i < argc)
+		paths = get_pathspec(prefix, argv + i);
+	else if (prefix) {
+		paths = xcalloc(2, sizeof(const char *));
+		paths[0] = prefix;
+		paths[1] = NULL;
+	}
+
+	if (!object_list)
+		return !grep_cache(&opt, paths, cached);
+
+	if (cached)
+		die("both --cached and trees are given.");
+
+	for (list = object_list; list; list = list->next) {
+		struct object *real_obj;
+		real_obj = deref_tag(list->item, NULL, 0);
+		if (grep_object(&opt, paths, real_obj, list->name))
+			hit = 1;
+	}
+	return !hit;
+}
diff --git a/builtin.h b/builtin.h
index bb63f0729a..7744f7d2f6 100644
--- a/builtin.h
+++ b/builtin.h
@@ -23,5 +23,6 @@ extern int cmd_diff(int argc, const char **argv, char **envp);
 extern int cmd_count_objects(int argc, const char **argv, char **envp);
 
 extern int cmd_push(int argc, const char **argv, char **envp);
+extern int cmd_grep(int argc, const char **argv, char **envp);
 
 #endif
diff --git a/combine-diff.c b/combine-diff.c
index 8a8fe3863a..64b20cce24 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -608,6 +608,7 @@ static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
 	int abbrev = opt->full_index ? 40 : DEFAULT_ABBREV;
 	mmfile_t result_file;
 
+	context = opt->context;
 	/* Read the result of merge first */
 	if (!working_tree_file)
 		result = grab_blob(elem->sha1, &result_size);
diff --git a/config.c b/config.c
index 0f518c957c..0248c6d8a5 100644
--- a/config.c
+++ b/config.c
@@ -134,6 +134,41 @@ static int get_value(config_fn_t fn, char *name, unsigned int len)
 	return fn(name, value);
 }
 
+static int get_extended_base_var(char *name, int baselen, int c)
+{
+	do {
+		if (c == '\n')
+			return -1;
+		c = get_next_char();
+	} while (isspace(c));
+
+	/* We require the format to be '[base "extension"]' */
+	if (c != '"')
+		return -1;
+	name[baselen++] = '.';
+
+	for (;;) {
+		int c = get_next_char();
+		if (c == '\n')
+			return -1;
+		if (c == '"')
+			break;
+		if (c == '\\') {
+			c = get_next_char();
+			if (c == '\n')
+				return -1;
+		}
+		name[baselen++] = c;
+		if (baselen > MAXNAME / 2)
+			return -1;
+	}
+
+	/* Final ']' */
+	if (get_next_char() != ']')
+		return -1;
+	return baselen;
+}
+
 static int get_base_var(char *name)
 {
 	int baselen = 0;
@@ -144,6 +179,8 @@ static int get_base_var(char *name)
 			return -1;
 		if (c == ']')
 			return baselen;
+		if (isspace(c))
+			return get_extended_base_var(name, baselen, c);
 		if (!isalnum(c) && c != '.')
 			return -1;
 		if (baselen > MAXNAME / 2)
@@ -335,10 +372,12 @@ static int store_aux(const char* key, const char* value)
 			store.offset[store.seen] = ftell(config_file);
 			store.state = KEY_SEEN;
 			store.seen++;
-		} else if (strrchr(key, '.') - key == store.baselen &&
+		} else {
+			if (strrchr(key, '.') - key == store.baselen &&
 			      !strncmp(key, store.key, store.baselen)) {
 					store.state = SECTION_SEEN;
 					store.offset[store.seen] = ftell(config_file);
+			}
 		}
 	}
 	return 0;
@@ -346,8 +385,30 @@ static int store_aux(const char* key, const char* value)
 
 static void store_write_section(int fd, const char* key)
 {
+	const char *dot = strchr(key, '.');
+	int len1 = store.baselen, len2 = -1;
+
+	dot = strchr(key, '.');
+	if (dot) {
+		int dotlen = dot - key;
+		if (dotlen < len1) {
+			len2 = len1 - dotlen - 1;
+			len1 = dotlen;
+		}
+	}
+
 	write(fd, "[", 1);
-	write(fd, key, store.baselen);
+	write(fd, key, len1);
+	if (len2 >= 0) {
+		write(fd, " \"", 2);
+		while (--len2 >= 0) {
+			unsigned char c = *++dot;
+			if (c == '"')
+				write(fd, "\\", 1);
+			write(fd, &c, 1);
+		}
+		write(fd, "\"", 1);
+	}
 	write(fd, "]\n", 2);
 }
 
@@ -421,7 +482,7 @@ int git_config_set(const char* key, const char* value)
 int git_config_set_multivar(const char* key, const char* value,
 	const char* value_regex, int multi_replace)
 {
-	int i;
+	int i, dot;
 	int fd = -1, in_fd;
 	int ret;
 	char* config_filename = strdup(git_path("config"));
@@ -446,16 +507,23 @@ int git_config_set_multivar(const char* key, const char* value,
 	 * Validate the key and while at it, lower case it for matching.
 	 */
 	store.key = (char*)malloc(strlen(key)+1);
-	for (i = 0; key[i]; i++)
-		if (i != store.baselen &&
-				((!isalnum(key[i]) && key[i] != '.') ||
-				 (i == store.baselen+1 && !isalpha(key[i])))) {
-			fprintf(stderr, "invalid key: %s\n", key);
-			free(store.key);
-			ret = 1;
-			goto out_free;
-		} else
-			store.key[i] = tolower(key[i]);
+	dot = 0;
+	for (i = 0; key[i]; i++) {
+		unsigned char c = key[i];
+		if (c == '.')
+			dot = 1;
+		/* Leave the extended basename untouched.. */
+		if (!dot || i > store.baselen) {
+			if (!isalnum(c) || (i == store.baselen+1 && !isalpha(c))) {
+				fprintf(stderr, "invalid key: %s\n", key);
+				free(store.key);
+				ret = 1;
+				goto out_free;
+			}
+			c = tolower(c);
+		}
+		store.key[i] = c;
+	}
 	store.key[i] = 0;
 
 	/*
diff --git a/delta.h b/delta.h
index 727ae30e9e..7b3f86d85f 100644
--- a/delta.h
+++ b/delta.h
@@ -18,6 +18,8 @@ create_delta_index(const void *buf, unsigned long bufsize);
 
 /*
  * free_delta_index: free the index created by create_delta_index()
+ *
+ * Given pointer must be what create_delta_index() returned, or NULL.
  */
 extern void free_delta_index(struct delta_index *index);
 
diff --git a/diff.c b/diff.c
index 5285c03667..e16e0bfc0a 100644
--- a/diff.c
+++ b/diff.c
@@ -563,7 +563,7 @@ static void builtin_diff(const char *name_a,
 
 		ecbdata.label_path = lbl;
 		xpp.flags = XDF_NEED_MINIMAL;
-		xecfg.ctxlen = 3;
+		xecfg.ctxlen = o->context;
 		xecfg.flags = XDL_EMIT_FUNCNAMES;
 		if (!diffopts)
 			;
@@ -1187,6 +1187,7 @@ void diff_setup(struct diff_options *options)
 	options->line_termination = '\n';
 	options->break_opt = -1;
 	options->rename_limit = -1;
+	options->context = 3;
 
 	options->change = diff_change;
 	options->add_remove = diff_addremove;
@@ -1227,17 +1228,68 @@ int diff_setup_done(struct diff_options *options)
 	return 0;
 }
 
+int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val)
+{
+	char c, *eq;
+	int len;
+
+	if (*arg != '-')
+		return 0;
+	c = *++arg;
+	if (!c)
+		return 0;
+	if (c == arg_short) {
+		c = *++arg;
+		if (!c)
+			return 1;
+		if (val && isdigit(c)) {
+			char *end;
+			int n = strtoul(arg, &end, 10);
+			if (*end)
+				return 0;
+			*val = n;
+			return 1;
+		}
+		return 0;
+	}
+	if (c != '-')
+		return 0;
+	arg++;
+	eq = strchr(arg, '=');
+	if (eq)
+		len = eq - arg;
+	else
+		len = strlen(arg);
+	if (!len || strncmp(arg, arg_long, len))
+		return 0;
+	if (eq) {
+		int n;
+		char *end;
+		if (!isdigit(*++eq))
+			return 0;
+		n = strtoul(eq, &end, 10);
+		if (*end)
+			return 0;
+		*val = n;
+	}
+	return 1;
+}
+
 int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 {
 	const char *arg = av[0];
 	if (!strcmp(arg, "-p") || !strcmp(arg, "-u"))
 		options->output_format = DIFF_FORMAT_PATCH;
+	else if (opt_arg(arg, 'U', "unified", &options->context))
+		options->output_format = DIFF_FORMAT_PATCH;
 	else if (!strcmp(arg, "--patch-with-raw")) {
 		options->output_format = DIFF_FORMAT_PATCH;
 		options->with_raw = 1;
 	}
 	else if (!strcmp(arg, "--stat"))
 		options->output_format = DIFF_FORMAT_DIFFSTAT;
+	else if (!strcmp(arg, "--summary"))
+		options->summary = 1;
 	else if (!strcmp(arg, "--patch-with-stat")) {
 		options->output_format = DIFF_FORMAT_PATCH;
 		options->with_stat = 1;
@@ -1708,6 +1760,85 @@ static void flush_one_pair(struct diff_filepair *p,
 	}
 }
 
+static void show_file_mode_name(const char *newdelete, struct diff_filespec *fs)
+{
+	if (fs->mode)
+		printf(" %s mode %06o %s\n", newdelete, fs->mode, fs->path);
+	else
+		printf(" %s %s\n", newdelete, fs->path);
+}
+
+
+static void show_mode_change(struct diff_filepair *p, int show_name)
+{
+	if (p->one->mode && p->two->mode && p->one->mode != p->two->mode) {
+		if (show_name)
+			printf(" mode change %06o => %06o %s\n",
+			       p->one->mode, p->two->mode, p->two->path);
+		else
+			printf(" mode change %06o => %06o\n",
+			       p->one->mode, p->two->mode);
+	}
+}
+
+static void show_rename_copy(const char *renamecopy, struct diff_filepair *p)
+{
+	const char *old, *new;
+
+	/* Find common prefix */
+	old = p->one->path;
+	new = p->two->path;
+	while (1) {
+		const char *slash_old, *slash_new;
+		slash_old = strchr(old, '/');
+		slash_new = strchr(new, '/');
+		if (!slash_old ||
+		    !slash_new ||
+		    slash_old - old != slash_new - new ||
+		    memcmp(old, new, slash_new - new))
+			break;
+		old = slash_old + 1;
+		new = slash_new + 1;
+	}
+	/* p->one->path thru old is the common prefix, and old and new
+	 * through the end of names are renames
+	 */
+	if (old != p->one->path)
+		printf(" %s %.*s{%s => %s} (%d%%)\n", renamecopy,
+		       (int)(old - p->one->path), p->one->path,
+		       old, new, (int)(0.5 + p->score * 100.0/MAX_SCORE));
+	else
+		printf(" %s %s => %s (%d%%)\n", renamecopy,
+		       p->one->path, p->two->path,
+		       (int)(0.5 + p->score * 100.0/MAX_SCORE));
+	show_mode_change(p, 0);
+}
+
+static void diff_summary(struct diff_filepair *p)
+{
+	switch(p->status) {
+	case DIFF_STATUS_DELETED:
+		show_file_mode_name("delete", p->one);
+		break;
+	case DIFF_STATUS_ADDED:
+		show_file_mode_name("create", p->two);
+		break;
+	case DIFF_STATUS_COPIED:
+		show_rename_copy("copy", p);
+		break;
+	case DIFF_STATUS_RENAMED:
+		show_rename_copy("rename", p);
+		break;
+	default:
+		if (p->score) {
+			printf(" rewrite %s (%d%%)\n", p->two->path,
+				(int)(0.5 + p->score * 100.0/MAX_SCORE));
+			show_mode_change(p, 0);
+		} else	show_mode_change(p, 1);
+		break;
+	}
+}
+
 void diff_flush(struct diff_options *options)
 {
 	struct diff_queue_struct *q = &diff_queued_diff;
@@ -1741,7 +1872,6 @@ void diff_flush(struct diff_options *options)
 	for (i = 0; i < q->nr; i++) {
 		struct diff_filepair *p = q->queue[i];
 		flush_one_pair(p, diff_output_format, options, diffstat);
-		diff_free_filepair(p);
 	}
 
 	if (diffstat) {
@@ -1749,6 +1879,12 @@ void diff_flush(struct diff_options *options)
 		free(diffstat);
 	}
 
+	for (i = 0; i < q->nr; i++) {
+		if (options->summary)
+			diff_summary(q->queue[i]);
+		diff_free_filepair(q->queue[i]);
+	}
+
 	free(q->queue);
 	q->queue = NULL;
 	q->nr = q->alloc = 0;
diff --git a/diff.h b/diff.h
index d052608404..3027974c1e 100644
--- a/diff.h
+++ b/diff.h
@@ -31,7 +31,9 @@ struct diff_options {
 		 binary:1,
 		 full_index:1,
 		 silent_on_remove:1,
-		 find_copies_harder:1;
+		 find_copies_harder:1,
+		 summary:1;
+	int context;
 	int break_opt;
 	int detect_rename;
 	int line_termination;
diff --git a/git-am.sh b/git-am.sh
index f50dff2222..97ec2d0c7d 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -15,6 +15,10 @@ stop_here () {
 }
 
 stop_here_user_resolve () {
+    if [ -n "$resolvemsg" ]; then
+	    echo "$resolvemsg"
+	    stop_here $1
+    fi
     cmdline=$(basename $0)
     if test '' != "$interactive"
     then
@@ -87,7 +91,7 @@ fall_back_3way () {
 }
 
 prec=4
-dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary= ws=
+dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary= ws= resolvemsg=
 
 while case "$#" in 0) break;; esac
 do
@@ -123,6 +127,9 @@ do
 	--whitespace=*)
 	ws=$1; shift ;;
 
+	--resolvemsg=*)
+	resolvemsg=$(echo "$1" | sed -e "s/^--resolvemsg=//"); shift ;;
+
 	--)
 	shift; break ;;
 	-*)
@@ -151,7 +158,7 @@ then
 else
 	# Make sure we are not given --skip nor --resolved
 	test ",$skip,$resolved," = ,,, ||
-		die "we are not resuming."
+		die "Resolve operation not in progress, we are not resuming."
 
 	# Start afresh.
 	mkdir -p "$dotest" || exit
diff --git a/git-branch.sh b/git-branch.sh
index ebcc8989d8..134e68cf7f 100755
--- a/git-branch.sh
+++ b/git-branch.sh
@@ -82,8 +82,7 @@ done
 
 case "$#" in
 0)
-	git-rev-parse --symbolic --all |
-	sed -ne 's|^refs/heads/||p' |
+	git-rev-parse --symbolic --branches |
 	sort |
 	while read ref
 	do
diff --git a/git-format-patch.sh b/git-format-patch.sh
index c077f44ca1..8a16eadfbd 100755
--- a/git-format-patch.sh
+++ b/git-format-patch.sh
@@ -274,7 +274,7 @@ print "\n---\n\n";
 close FH or die "close $commsg pipe";
 ' "$keep_subject" "$num" "$signoff" "$headers" "$mimemagic" $commsg
 
-	git-diff-tree -p $diff_opts "$commit" | git-apply --stat --summary
+	git-diff-tree -p --stat --summary $diff_opts "$commit"
 	echo
 	case "$mimemagic" in
 	'');;
diff --git a/git-grep.sh b/git-grep.sh
deleted file mode 100755
index ad4f2fe810..0000000000
--- a/git-grep.sh
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/bin/sh
-#
-# Copyright (c) Linus Torvalds, 2005
-#
-
-USAGE='[<option>...] [-e] <pattern> [<path>...]'
-SUBDIRECTORY_OK='Yes'
-. git-sh-setup
-
-got_pattern () {
-	if [ -z "$no_more_patterns" ]
-	then
-		pattern="$1" no_more_patterns=yes
-	else
-		die "git-grep: do not specify more than one pattern"
-	fi
-}
-
-no_more_patterns=
-pattern=
-flags=()
-git_flags=()
-while : ; do
-	case "$1" in
-	-o|--cached|--deleted|--others|--killed|\
-	--ignored|--modified|--exclude=*|\
-	--exclude-from=*|\--exclude-per-directory=*)
-		git_flags=("${git_flags[@]}" "$1")
-		;;
-	-e)
-		got_pattern "$2"
-		shift
-		;;
-	-A|-B|-C|-D|-d|-f|-m)
-		flags=("${flags[@]}" "$1" "$2")
-		shift
-		;;
-	--)
-		# The rest are git-ls-files paths
-		shift
-		break
-		;;
-	-*)
-		flags=("${flags[@]}" "$1")
-		;;
-	*)
-		if [ -z "$no_more_patterns" ]
-		then
-			got_pattern "$1"
-			shift
-		fi
-		[ "$1" = -- ] && shift
-		break
-		;;
-	esac
-	shift
-done
-[ "$pattern" ] || {
-	usage
-}
-git-ls-files -z "${git_flags[@]}" -- "$@" |
-	xargs -0 grep "${flags[@]}" -e "$pattern" --
diff --git a/git-merge.sh b/git-merge.sh
index b834e79c98..af1f25b3c5 100755
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -55,8 +55,7 @@ finish () {
 
 	case "$no_summary" in
 	'')
-		git-diff-tree -p -M "$head" "$1" |
-		git-apply --stat --summary
+		git-diff-tree -p --stat --summary -M "$head" "$1"
 		;;
 	esac
 }
diff --git a/git-rebase.sh b/git-rebase.sh
index 9e259028e0..6ff6088d18 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -12,9 +12,10 @@ It then attempts to create a new commit for each commit from the original
 
 It is possible that a merge failure will prevent this process from being
 completely automatic.  You will have to resolve any such merge failure
-and run git-rebase --continue.  If you can not resolve the merge failure,
-running git-rebase --abort will restore the original <branch> and remove
-the working files found in the .dotest directory.
+and run git rebase --continue.  Another option is to bypass the commit
+that caused the merge failure with git rebase --skip.  To restore the
+original <branch> and remove the .dotest working files, use the command
+git rebase --abort instead.
 
 Note that if <branch> is not specified on the command line, the
 currently checked out branch is used.  You must be in the top
@@ -28,6 +29,11 @@ Example:       git-rebase master~1 topic
 '
 . git-sh-setup
 
+RESOLVEMSG="
+When you have resolved this problem run \"git rebase --continue\".
+If you would prefer to skip this patch, instead run \"git rebase --skip\".
+To restore the original branch and stop rebasing run \"git rebase --abort\".
+"
 unset newbase
 while case "$#" in 0) break ;; esac
 do
@@ -40,7 +46,11 @@ do
 			exit 1
 			;;
 		esac
-		git am --resolved --3way
+		git am --resolved --3way --resolvemsg="$RESOLVEMSG"
+		exit
+		;;
+	--skip)
+		git am -3 --skip --resolvemsg="$RESOLVEMSG"
 		exit
 		;;
 	--abort)
@@ -143,4 +153,5 @@ then
 fi
 
 git-format-patch -k --stdout --full-index "$upstream" ORIG_HEAD |
-git am --binary -3 -k
+git am --binary -3 -k --resolvemsg="$RESOLVEMSG"
+
diff --git a/git-request-pull.sh b/git-request-pull.sh
index 2c48bfb299..4319e35c62 100755
--- a/git-request-pull.sh
+++ b/git-request-pull.sh
@@ -30,4 +30,4 @@ echo "  $url"
 echo
 
 git log  $baserev..$headrev | git-shortlog ;
-git diff $baserev..$headrev | git-apply --stat --summary
+git diff --stat --summary $baserev..$headrev
diff --git a/git-reset.sh b/git-reset.sh
index 6cb073cb16..0ee3e3e154 100755
--- a/git-reset.sh
+++ b/git-reset.sh
@@ -6,6 +6,7 @@ USAGE='[--mixed | --soft | --hard]  [<commit-ish>]'
 tmp=${GIT_DIR}/reset.$$
 trap 'rm -f $tmp-*' 0 1 2 3 15
 
+update=
 reset_type=--mixed
 case "$1" in
 --mixed | --soft | --hard)
@@ -23,24 +24,7 @@ rev=$(git-rev-parse --verify $rev^0) || exit
 # behind before a hard reset, so that we can remove them.
 if test "$reset_type" = "--hard"
 then
-	{
-		git-ls-files --stage -z
-		git-rev-parse --verify HEAD 2>/dev/null &&
-		git-ls-tree -r -z HEAD
-	} | perl -e '
-	    use strict;
-	    my %seen;
-	    $/ = "\0";
-	    while (<>) {
-		chomp;
-		my ($info, $path) = split(/\t/, $_);
-		next if ($info =~ / tree /);
-		if (!$seen{$path}) {
-			$seen{$path} = 1;
-			print "$path\0";
-		}
-	    }
-	' >$tmp-exists
+	update=-u
 fi
 
 # Soft reset does not touch the index file nor the working tree
@@ -54,7 +38,7 @@ then
 		die "Cannot do a soft reset in the middle of a merge."
 	fi
 else
-	git-read-tree --reset "$rev" || exit
+	git-read-tree --reset $update "$rev" || exit
 fi
 
 # Any resets update HEAD to the head being switched to.
@@ -68,33 +52,7 @@ git-update-ref HEAD "$rev"
 
 case "$reset_type" in
 --hard )
-	# Hard reset matches the working tree to that of the tree
-	# being switched to.
-	git-checkout-index -f -u -q -a
-	git-ls-files --cached -z |
-	perl -e '
-		use strict;
-		my (%keep, $fh);
-		$/ = "\0";
-		while (<STDIN>) {
-			chomp;
-			$keep{$_} = 1;
-		}
-		open $fh, "<", $ARGV[0]
-			or die "cannot open $ARGV[0]";
-		while (<$fh>) {
-			chomp;
-			if (! exists $keep{$_}) {
-				# it is ok if this fails -- it may already
-				# have been culled by checkout-index.
-				unlink $_;
-				while (s|/[^/]*$||) {
-					rmdir($_) or last;
-				}
-			}
-		}
-	' $tmp-exists
-	;;
+	;; # Nothing else to do
 --soft )
 	;; # Nothing else to do
 --mixed )
diff --git a/git-send-email.perl b/git-send-email.perl
index d8c4b1f892..312a4ea2aa 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -40,7 +40,8 @@
 my (@to,@cc,@initial_cc,$initial_reply_to,$initial_subject,@files,$from,$compose,$time);
 
 # Behavior modification variables
-my ($chain_reply_to, $smtp_server, $quiet, $suppress_from, $no_signed_off_cc) = (1, "localhost", 0, 0, 0);
+my ($chain_reply_to, $quiet, $suppress_from, $no_signed_off_cc) = (1, 0, 0, 0);
+my $smtp_server;
 
 # Example reply to:
 #$initial_reply_to = ''; #<20050203173208.GA23964@foobar.com>';
@@ -179,8 +180,14 @@ sub expand_aliases {
 	$initial_reply_to =~ s/(^\s+|\s+$)//g;
 }
 
-if (!defined $smtp_server) {
-	$smtp_server = "localhost";
+if (!$smtp_server) {
+	foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
+		if (-x $_) {
+			$smtp_server = $_;
+			last;
+		}
+	}
+	$smtp_server ||= 'localhost'; # could be 127.0.0.1, too... *shrug*
 }
 
 if ($compose) {
@@ -300,6 +307,10 @@ sub expand_aliases {
 
 sub extract_valid_address {
 	my $address = shift;
+
+	# check for a local address:
+	return $address if ($address =~ /^([\w\-]+)$/);
+
 	if ($have_email_valid) {
 		return Email::Valid->address($address);
 	} else {
@@ -358,26 +369,39 @@ sub send_message
 ";
 	$header .= "In-Reply-To: $reply_to\n" if $reply_to;
 
-	$smtp ||= Net::SMTP->new( $smtp_server );
-	$smtp->mail( $from ) or die $smtp->message;
-	$smtp->to( @recipients ) or die $smtp->message;
-	$smtp->data or die $smtp->message;
-	$smtp->datasend("$header\n$message") or die $smtp->message;
-	$smtp->dataend() or die $smtp->message;
-	$smtp->ok or die "Failed to send $subject\n".$smtp->message;
-
+	if ($smtp_server =~ m#^/#) {
+		my $pid = open my $sm, '|-';
+		defined $pid or die $!;
+		if (!$pid) {
+			exec($smtp_server,'-i',@recipients) or die $!;
+		}
+		print $sm "$header\n$message";
+		close $sm or die $?;
+	} else {
+		$smtp ||= Net::SMTP->new( $smtp_server );
+		$smtp->mail( $from ) or die $smtp->message;
+		$smtp->to( @recipients ) or die $smtp->message;
+		$smtp->data or die $smtp->message;
+		$smtp->datasend("$header\n$message") or die $smtp->message;
+		$smtp->dataend() or die $smtp->message;
+		$smtp->ok or die "Failed to send $subject\n".$smtp->message;
+	}
 	if ($quiet) {
 		printf "Sent %s\n", $subject;
 	} else {
-		print "OK. Log says:
-Date: $date
-Server: $smtp_server Port: 25
-From: $from
-Subject: $subject
-Cc: $cc
-To: $to
-
-Result: ", $smtp->code, ' ', ($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
+		print "OK. Log says:\nDate: $date\n";
+		if ($smtp) {
+			print "Server: $smtp_server\n";
+		} else {
+			print "Sendmail: $smtp_server\n";
+		}
+		print "From: $from\nSubject: $subject\nCc: $cc\nTo: $to\n\n";
+		if ($smtp) {
+			print "Result: ", $smtp->code, ' ',
+				($smtp->message =~ /\n([^\n]+\n)$/s), "\n";
+		} else {
+			print "Result: OK\n";
+		}
 	}
 }
 
@@ -478,9 +502,14 @@ (@)
 	my @emails;
 
 	foreach my $entry (@_) {
-		my $clean = extract_valid_address($entry);
-		next if $seen{$clean}++;
-		push @emails, $entry;
+		if (my $clean = extract_valid_address($entry)) {
+			$seen{$clean} ||= 0;
+			next if $seen{$clean}++;
+			push @emails, $entry;
+		} else {
+			print STDERR "W: unable to extract a valid address",
+					" from: $entry\n";
+		}
 	}
 	return @emails;
 }
diff --git a/git-tag.sh b/git-tag.sh
index dc6aa95767..a0afa25821 100755
--- a/git-tag.sh
+++ b/git-tag.sh
@@ -25,14 +25,12 @@ do
 	force=1
 	;;
     -l)
-        cd "$GIT_DIR/refs" &&
 	case "$#" in
 	1)
-		find tags -type f -print ;;
-	*)
-		shift
-		find tags -type f -print | grep "$@" ;;
+		set x . ;;
 	esac
+	shift
+	git rev-parse --symbolic --tags | sort | grep "$@"
 	exit $?
 	;;
     -m)
diff --git a/git.c b/git.c
index 49ba5189d9..a94d9ee5a7 100644
--- a/git.c
+++ b/git.c
@@ -49,6 +49,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
 		{ "push", cmd_push },
 		{ "count-objects", cmd_count_objects },
 		{ "diff", cmd_diff },
+		{ "grep", cmd_grep },
 	};
 	int i;
 
diff --git a/merge-base.c b/merge-base.c
index f0dc06ef55..4856ca01c3 100644
--- a/merge-base.c
+++ b/merge-base.c
@@ -82,8 +82,9 @@ static struct commit *interesting(struct commit_list *list)
  * commit B.
  *
  *
- * Another pathological example how this thing can fail to mark an ancestor
- * of a merge base as UNINTERESTING without the postprocessing phase.
+ * Another pathological example how this thing used to fail to mark an
+ * ancestor of a merge base as UNINTERESTING before we introduced the
+ * postprocessing phase (mark_reachable_commits).
  *
  *		  2
  *		  H
@@ -118,7 +119,9 @@ static struct commit *interesting(struct commit_list *list)
  *	 D7			2 3 7 7 3 2 1 2
  *	 E7			2 3 7 7 7 2 1 2
  *
- * and we end up showing E as an interesting merge base.
+ * and we ended up showing E as an interesting merge base.
+ * The postprocessing phase re-injects C and continues traversal
+ * to contaminate D and E.
  */
 
 static int show_all = 0;
diff --git a/pack-objects.c b/pack-objects.c
index 5466b15167..77284cfdba 100644
--- a/pack-objects.c
+++ b/pack-objects.c
@@ -10,7 +10,6 @@
 #include "tree-walk.h"
 #include <sys/time.h>
 #include <signal.h>
-#include <stdint.h>
 
 static const char pack_usage[] = "git-pack-objects [-q] [--no-reuse-delta] [--non-empty] [--local] [--incremental] [--window=N] [--depth=N] {--stdout | base-name} < object-list";
 
@@ -157,7 +156,7 @@ static void prepare_pack_revindex(struct pack_revindex *rix)
 
 	rix->revindex = xmalloc(sizeof(unsigned long) * (num_ent + 1));
 	for (i = 0; i < num_ent; i++) {
-		uint32_t hl = *((uint32_t *)(index + 24 * i));
+		unsigned int hl = *((unsigned int *)(index + 24 * i));
 		rix->revindex[i] = ntohl(hl);
 	}
 	/* This knows the pack format -- the 20-byte trailer
@@ -1037,10 +1036,13 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
 	if (src_entry->depth >= max_depth)
 		return 0;
 
-	/* Now some size filtering euristics. */
+	/* Now some size filtering heuristics. */
 	size = trg_entry->size;
-	max_size = size / 2 - 20;
-	if (trg_entry->delta)
+	max_size = size/2 - 20;
+	max_size = max_size * (max_depth - src_entry->depth) / max_depth;
+	if (max_size == 0)
+		return 0;
+	if (trg_entry->delta && trg_entry->delta_size <= max_size)
 		max_size = trg_entry->delta_size-1;
 	src_size = src_entry->size;
 	sizediff = src_size < size ? size - src_size : 0;
@@ -1105,17 +1107,14 @@ static void find_deltas(struct object_entry **list, int window, int depth)
 
 		if (entry->size < 50)
 			continue;
-		if (n->index)
-			free_delta_index(n->index);
+		free_delta_index(n->index);
+		n->index = NULL;
 		free(n->data);
 		n->entry = entry;
 		n->data = read_sha1_file(entry->sha1, type, &size);
 		if (size != entry->size)
 			die("object %s inconsistent object length (%lu vs %lu)",
 			    sha1_to_hex(entry->sha1), size, entry->size);
-		n->index = create_delta_index(n->data, size);
-		if (!n->index)
-			die("out of memory");
 
 		j = window;
 		while (--j > 0) {
@@ -1129,15 +1128,17 @@ static void find_deltas(struct object_entry **list, int window, int depth)
 			if (try_delta(n, m, m->index, depth) < 0)
 				break;
 		}
-#if 0
 		/* if we made n a delta, and if n is already at max
 		 * depth, leaving it in the window is pointless.  we
 		 * should evict it first.
-		 * ... in theory only; somehow this makes things worse.
 		 */
 		if (entry->delta && depth <= entry->depth)
 			continue;
-#endif
+
+		n->index = create_delta_index(n->data, size);
+		if (!n->index)
+			die("out of memory");
+
 		idx++;
 		if (idx >= window)
 			idx = 0;
@@ -1147,8 +1148,7 @@ static void find_deltas(struct object_entry **list, int window, int depth)
 		fputc('\n', stderr);
 
 	for (i = 0; i < window; ++i) {
-		if (array[i].index)
-			free_delta_index(array[i].index);
+		free_delta_index(array[i].index);
 		free(array[i].data);
 	}
 	free(array);
diff --git a/read-tree.c b/read-tree.c
index e926e4c880..e16e91b173 100644
--- a/read-tree.c
+++ b/read-tree.c
@@ -12,6 +12,7 @@
 #include <sys/time.h>
 #include <signal.h>
 
+static int reset = 0;
 static int merge = 0;
 static int update = 0;
 static int index_only = 0;
@@ -416,6 +417,10 @@ static void verify_uptodate(struct cache_entry *ce)
 			return;
 		errno = 0;
 	}
+	if (reset) {
+		ce->ce_flags |= htons(CE_UPDATE);
+		return;
+	}
 	if (errno == ENOENT)
 		return;
 	die("Entry '%s' not uptodate. Cannot merge.", ce->name);
@@ -684,8 +689,14 @@ static int oneway_merge(struct cache_entry **src)
 			     merge_size);
 
 	if (!a)
-		return 0;
+		return deleted_entry(old, NULL);
 	if (old && same(old, a)) {
+		if (reset) {
+			struct stat st;
+			if (lstat(old->name, &st) ||
+			    ce_match_stat(old, &st, 1))
+				old->ce_flags |= htons(CE_UPDATE);
+		}
 		return keep_entry(old);
 	}
 	return merged_entry(a, NULL);
@@ -719,7 +730,7 @@ static struct cache_file cache_file;
 
 int main(int argc, char **argv)
 {
-	int i, newfd, reset, stage = 0;
+	int i, newfd, stage = 0;
 	unsigned char sha1[20];
 	merge_fn_t fn = NULL;
 
diff --git a/refs.c b/refs.c
index 275b914b2b..6c91ae6468 100644
--- a/refs.c
+++ b/refs.c
@@ -114,7 +114,7 @@ int read_ref(const char *filename, unsigned char *sha1)
 	return -1;
 }
 
-static int do_for_each_ref(const char *base, int (*fn)(const char *path, const unsigned char *sha1))
+static int do_for_each_ref(const char *base, int (*fn)(const char *path, const unsigned char *sha1), int trim)
 {
 	int retval = 0;
 	DIR *dir = opendir(git_path("%s", base));
@@ -146,7 +146,7 @@ static int do_for_each_ref(const char *base, int (*fn)(const char *path, const u
 			if (stat(git_path("%s", path), &st) < 0)
 				continue;
 			if (S_ISDIR(st.st_mode)) {
-				retval = do_for_each_ref(path, fn);
+				retval = do_for_each_ref(path, fn, trim);
 				if (retval)
 					break;
 				continue;
@@ -160,7 +160,7 @@ static int do_for_each_ref(const char *base, int (*fn)(const char *path, const u
 				      "commit object!", path);
 				continue;
 			}
-			retval = fn(path, sha1);
+			retval = fn(path + trim, sha1);
 			if (retval)
 				break;
 		}
@@ -180,7 +180,22 @@ int head_ref(int (*fn)(const char *path, const unsigned char *sha1))
 
 int for_each_ref(int (*fn)(const char *path, const unsigned char *sha1))
 {
-	return do_for_each_ref("refs", fn);
+	return do_for_each_ref("refs", fn, 0);
+}
+
+int for_each_tag_ref(int (*fn)(const char *path, const unsigned char *sha1))
+{
+	return do_for_each_ref("refs/tags", fn, 10);
+}
+
+int for_each_branch_ref(int (*fn)(const char *path, const unsigned char *sha1))
+{
+	return do_for_each_ref("refs/heads", fn, 11);
+}
+
+int for_each_remote_ref(int (*fn)(const char *path, const unsigned char *sha1))
+{
+	return do_for_each_ref("refs/remotes", fn, 13);
 }
 
 static char *ref_file_name(const char *ref)
diff --git a/refs.h b/refs.h
index 2625596701..fa816c1e9f 100644
--- a/refs.h
+++ b/refs.h
@@ -7,6 +7,9 @@
  */
 extern int head_ref(int (*fn)(const char *path, const unsigned char *sha1));
 extern int for_each_ref(int (*fn)(const char *path, const unsigned char *sha1));
+extern int for_each_tag_ref(int (*fn)(const char *path, const unsigned char *sha1));
+extern int for_each_branch_ref(int (*fn)(const char *path, const unsigned char *sha1));
+extern int for_each_remote_ref(int (*fn)(const char *path, const unsigned char *sha1));
 
 /** Reads the refs file specified into sha1 **/
 extern int get_ref_sha1(const char *ref, unsigned char *sha1);
diff --git a/repo-config.c b/repo-config.c
index 63eda1bb78..127afd784c 100644
--- a/repo-config.c
+++ b/repo-config.c
@@ -64,12 +64,13 @@ static int show_config(const char* key_, const char* value_)
 
 static int get_value(const char* key_, const char* regex_)
 {
-	int i;
+	char *tl;
 
-	key = malloc(strlen(key_)+1);
-	for (i = 0; key_[i]; i++)
-		key[i] = tolower(key_[i]);
-	key[i] = 0;
+	key = strdup(key_);
+	for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
+		*tl = tolower(*tl);
+	for (tl=key; *tl && *tl != '.'; ++tl)
+		*tl = tolower(*tl);
 
 	if (use_key_regexp) {
 		key_regexp = (regex_t*)malloc(sizeof(regex_t));
diff --git a/rev-parse.c b/rev-parse.c
index 62e16af33c..4e2d9fbdf6 100644
--- a/rev-parse.c
+++ b/rev-parse.c
@@ -36,6 +36,7 @@ static int is_rev_argument(const char *arg)
 		"--all",
 		"--bisect",
 		"--dense",
+		"--branches",
 		"--header",
 		"--max-age=",
 		"--max-count=",
@@ -45,7 +46,9 @@ static int is_rev_argument(const char *arg)
 		"--objects-edge",
 		"--parents",
 		"--pretty",
+		"--remotes",
 		"--sparse",
+		"--tags",
 		"--topo-order",
 		"--date-order",
 		"--unpacked",
@@ -165,7 +168,7 @@ int main(int argc, char **argv)
 	int i, as_is = 0, verify = 0;
 	unsigned char sha1[20];
 	const char *prefix = setup_git_directory();
-	
+
 	git_config(git_default_config);
 
 	for (i = 1; i < argc; i++) {
@@ -255,6 +258,18 @@ int main(int argc, char **argv)
 				for_each_ref(show_reference);
 				continue;
 			}
+			if (!strcmp(arg, "--branches")) {
+				for_each_branch_ref(show_reference);
+				continue;
+			}
+			if (!strcmp(arg, "--tags")) {
+				for_each_tag_ref(show_reference);
+				continue;
+			}
+			if (!strcmp(arg, "--remotes")) {
+				for_each_remote_ref(show_reference);
+				continue;
+			}
 			if (!strcmp(arg, "--show-prefix")) {
 				if (prefix)
 					puts(prefix);
diff --git a/sha1_file.c b/sha1_file.c
index 3372ebcdca..223001033c 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -13,7 +13,6 @@
 #include "commit.h"
 #include "tag.h"
 #include "tree.h"
-#include <stdint.h>
 
 #ifndef O_NOATIME
 #if defined(__linux__) && (defined(__i386__) || defined(__PPC__))
@@ -1162,7 +1161,7 @@ int find_pack_entry_one(const unsigned char *sha1,
 		int mi = (lo + hi) / 2;
 		int cmp = memcmp(index + 24 * mi + 4, sha1, 20);
 		if (!cmp) {
-			e->offset = ntohl(*((uint32_t *)(index + 24 * mi)));
+			e->offset = ntohl(*((unsigned int *)(index + 24 * mi)));
 			memcpy(e->sha1, sha1, 20);
 			e->p = p;
 			return 1;
diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index 7090ea92c1..8260d57b63 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -229,7 +229,7 @@ test_expect_failure 'invalid key' 'git-repo-config inval.2key blabla'
 test_expect_success 'correct key' 'git-repo-config 123456.a123 987'
 
 test_expect_success 'hierarchical section' \
-	'git-repo-config 1.2.3.alpha beta'
+	'git-repo-config Version.1.2.3eX.Alpha beta'
 
 cat > expect << EOF
 [beta] ; silly comment # another comment
@@ -241,8 +241,8 @@ noIndent= sillyValue ; 'nother silly comment
 	NoNewLine = wow2 for me
 [123456]
 	a123 = 987
-[1.2.3]
-	alpha = beta
+[Version "1.2.3eX"]
+	Alpha = beta
 EOF
 
 test_expect_success 'hierarchical section value' 'cmp .git/config expect'
@@ -251,7 +251,7 @@ cat > expect << EOF
 beta.noindent=sillyValue
 nextsection.nonewline=wow2 for me
 123456.a123=987
-1.2.3.alpha=beta
+version.1.2.3eX.alpha=beta
 EOF
 
 test_expect_success 'working --list' \