Merge refs/heads/master from .

11 files changed, 520 insertions, 51 deletions

diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches
index 6121e902ae..fd9881f26c 100644
--- a/Documentation/SubmittingPatches
+++ b/Documentation/SubmittingPatches
@@ -73,14 +73,25 @@ MIME-attached change being accepted, but it makes it more likely
 that it will be postponed.
 
 Exception:  If your mailer is mangling patches then someone may ask
-you to re-send them using MIME.
+you to re-send them using MIME, that is OK.
 
-Note that your maintainer does not subscribe to the git mailing
-list (he reads it via mail-to-news gateway).  If your patch is
-for discussion first, send it "To:" the mailing list, and
-optoinally "cc:" him.  If it is trivially correct or after list
-discussion reached consensus, send it "To:" the maintainer and
-optionally "cc:" the list.
+Do not PGP sign your patch, at least for now.  Most likely, your
+maintainer or other people on the list would not have your PGP
+key and would not bother obtaining it anyway.  Your patch is not
+judged by who you are; a good patch from an unknown origin has a
+far better chance of being accepted than a patch from a known,
+respected origin that is done poorly or does incorrect things.
+
+If you really really really really want to do a PGP signed
+patch, format it as "multipart/signed", not a text/plain message
+that starts with '-----BEGIN PGP SIGNED MESSAGE-----'.  That is
+not a text/plain, it's something else.
+
+Note that your maintainer does not necessarily read everything
+on the git mailing list.  If your patch is for discussion first,
+send it "To:" the mailing list, and optionally "cc:" him.  If it
+is trivially correct or after the list reached a consensus, send
+it "To:" the maintainer and optionally "cc:" the list.
 
 
 (6) Sign your work
@@ -128,3 +139,152 @@ then you just add a line saying
 Some people also put extra tags at the end.  They'll just be ignored for
 now, but you can do this to mark internal company procedures or just
 point out some special detail about the sign-off.
+
+
+------------------------------------------------
+MUA specific hints
+
+Some of patches I receive or pick up from the list share common
+patterns of breakage.  Please make sure your MUA is set up
+properly not to corrupt whitespaces.  Here are two common ones
+I have seen:
+
+* Empty context lines that do not have _any_ whitespace.
+
+* Non empty context lines that have one extra whitespace at the
+  beginning.
+
+One test you could do yourself if your MUA is set up correctly is:
+
+* Send the patch to yourself, exactly the way you would, except
+  To: and Cc: lines, which would not contain the list and
+  maintainer address.
+
+* Save that patch to a file in UNIX mailbox format.  Call it say
+  a.patch.
+
+* Try to apply to the tip of the "master" branch from the
+  git.git public repository:
+
+    $ git fetch http://kernel.org/pub/scm/git/git.git master:test-apply
+    $ git checkout test-apply
+    $ git reset --hard
+    $ git applymbox a.patch
+
+If it does not apply correctly, there can be various reasons.
+
+* Your patch itself does not apply cleanly.  That is _bad_ but
+  does not have much to do with your MUA.  Please rebase the
+  patch appropriately.
+
+* Your MUA corrupted your patch; applymbox would complain that
+  the patch does not apply.  Look at .dotest/ subdirectory and
+  see what 'patch' file contains and check for the common
+  corruption patterns mentioned above.
+
+* While you are at it, check what are in 'info' and
+  'final-commit' files as well.  If what is in 'final-commit' is
+  not exactly what you would want to see in the commit log
+  message, it is very likely that your maintainer would end up
+  hand editing the log message when he applies your patch.
+  Things like "Hi, this is my first patch.\n", if you really
+  want to put in the patch e-mail, should come after the
+  three-dash line that signals the end of the commit message.
+
+
+Pine
+----
+
+(Johannes Schindelin)
+
+I don't know how many people still use pine, but for those poor
+souls it may be good to mention that the quell-flowed-text is
+needed for recent versions.
+
+... the "no-strip-whitespace-before-send" option, too. AFAIK it
+was introduced in 4.60.
+
+(Linus Torvalds)
+
+And 4.58 needs at least this.
+
+---
+diff-tree 8326dd8350be64ac7fc805f6563a1d61ad10d32c (from e886a61f76edf5410573e92e38ce22974f9c40f1)
+Author: Linus Torvalds <torvalds@g5.osdl.org>
+Date:   Mon Aug 15 17:23:51 2005 -0700
+
+    Fix pine whitespace-corruption bug
+
+    There's no excuse for unconditionally removing whitespace from
+    the pico buffers on close.
+
+diff --git a/pico/pico.c b/pico/pico.c
+--- a/pico/pico.c
++++ b/pico/pico.c
+@@ -219,7 +219,9 @@ PICO *pm;
+ 	    switch(pico_all_done){	/* prepare for/handle final events */
+ 	      case COMP_EXIT :		/* already confirmed */
+ 		packheader();
++#if 0
+ 		stripwhitespace();
++#endif
+ 		c |= COMP_EXIT;
+ 		break;
+ 
+
+
+Thunderbird
+-----------
+
+(A Large Angry SCM)
+
+Here are some hints on how to successfully submit patches inline using
+Thunderbird. [*3*]
+
+This recipe appears to work with the current [*1*] Thunderbird from Suse.
+
+The following Thunderbird extensions are needed:
+	AboutConfig 0.5
+		http://aboutconfig.mozdev.org/
+	External Editor 0.5.4
+		http://extensionroom.mozdev.org/more-info/exteditor
+
+1) Prepare the patch as a text file using your method of choice.
+
+2) Before opening a compose window, use Edit->Account Settings to
+uncheck the "Compose messages in HTML format" setting in the
+"Composition & Addressing" panel of the account to be used to send the
+patch. [*2*]
+
+3) In the main Thunderbird window, _before_ you open the compose window
+for the patch, use Tools->about:config to set the following to the
+indicated values:
+	mailnews.send_plaintext_flowed	=> false
+	mailnews.wraplength		=> 999
+
+4) Open a compose window and click the external editor icon.
+
+5) In the external editor window, read in the patch file and exit the
+editor normally.
+
+6) Back in the compose window: Add whatever other text you wish to the
+message, complete the addressing and subject fields, and press send.
+
+7) Optionally, undo the about:config/account settings changes made in
+steps 2 & 3.
+
+
+[Footnotes]
+*1* Version 1.0 (20041207) from the MozillaThunderbird-1.0-5 rpm of Suse
+9.3 professional updates.
+
+*2* It may be possible to do this with about:config and the following
+settings but I haven't tried, yet.
+	mail.html_compose			=> false
+	mail.identity.default.compose_html	=> false
+	mail.identity.id?.compose_html		=> false
+
+*3* Even after following these hints, Thunderbird will still trim
+trailing whitespace from each line. I currently have no work around for
+for this issue.
+
diff --git a/Documentation/git-mailsplit.txt b/Documentation/git-mailsplit.txt
index 617276a011..789d3a9f1e 100644
--- a/Documentation/git-mailsplit.txt
+++ b/Documentation/git-mailsplit.txt
@@ -3,26 +3,24 @@ git-mailsplit(1)
 
 NAME
 ----
-git-mailsplit - Some git command not yet documented.
-
+git-mailsplit - Totally braindamaged mbox splitter program.
 
 SYNOPSIS
 --------
-'git-mailsplit' [ --option ] <args>...
+'git-mailsplit' <mbox> <directory>
 
 DESCRIPTION
 -----------
-Does something not yet documented.
-
+Splits a mbox file into a list of files: "0001" "0002" ..  in the specified
+directory so you can process them further from there.
 
 OPTIONS
 -------
---option::
-	Some option not yet documented.
-
-<args>...::
-	Some argument not yet documented.
+<mbox>::
+	Mbox file to split.
 
+<directory>::
+	Directory in which to place the individual messages.
 
 Author
 ------
diff --git a/Documentation/git-stripspace.txt b/Documentation/git-stripspace.txt
index fc87146d59..d1a550c202 100644
--- a/Documentation/git-stripspace.txt
+++ b/Documentation/git-stripspace.txt
@@ -3,26 +3,21 @@ git-stripspace(1)
 
 NAME
 ----
-git-stripspace - Some git command not yet documented.
+git-stripspace - Fileter out empty lines.
 
 
 SYNOPSIS
 --------
-'git-stripspace' [ --option ] <args>...
+'git-stripspace' < <stream>
 
 DESCRIPTION
 -----------
-Does something not yet documented.
-
+Remove multiple empty lines, and empty lines at beginning and end.
 
 OPTIONS
 -------
---option::
-	Some option not yet documented.
-
-<args>...::
-	Some argument not yet documented.
-
+<stream>::
+	Byte stream to act on.
 
 Author
 ------
diff --git a/apply.c b/apply.c
index 7c1a8411f2..3ebbf6b1dc 100644
--- a/apply.c
+++ b/apply.c
@@ -387,7 +387,7 @@ static char *git_header_name(char *line)
 		default:
 			continue;
 		case '\n':
-			break;
+			return NULL;
 		case '\t': case ' ':
 			second = name+len;
 			for (;;) {
diff --git a/git-commit-script b/git-commit-script
index e47a090c97..4987e37861 100755
--- a/git-commit-script
+++ b/git-commit-script
@@ -195,8 +195,8 @@ else
 fi
 if [ "$?" != "0" -a ! -f $GIT_DIR/MERGE_HEAD ]
 then
-	sed -ne '/^#/p' .editmsg
-	rm .editmsg
+	rm -f .editmsg
+	git-status-script
 	exit 1
 fi
 case "$no_edit" in
diff --git a/git-push-script b/git-push-script
index 5fa5af2af8..744ee7e7dc 100755
--- a/git-push-script
+++ b/git-push-script
@@ -26,6 +26,10 @@ do
 	esac
 	shift
 done
+case "$#" in
+0)
+	die "Where would you want to push today?" ;;
+esac
 
 . git-parse-remote-script
 remote=$(get_remote_url "$@")
diff --git a/git-sh-setup-script b/git-sh-setup-script
index 5bf471f781..84e15df1bc 100755
--- a/git-sh-setup-script
+++ b/git-sh-setup-script
@@ -11,7 +11,6 @@ die() {
 	exit 1
 }
 
-[ -d "$GIT_DIR" ] &&
+[ -h "$GIT_DIR/HEAD" ] &&
 [ -d "$GIT_DIR/refs" ] &&
-[ -d "$GIT_OBJECT_DIRECTORY" ] &&
 [ -d "$GIT_OBJECT_DIRECTORY/00" ]
diff --git a/git-status-script b/git-status-script
index 947cc21975..1696f23e04 100755
--- a/git-status-script
+++ b/git-status-script
@@ -1,4 +1,7 @@
 #!/bin/sh
+#
+# Copyright (c) 2005 Linus Torvalds
+#
 . git-sh-setup-script || die "Not a git archive"
 
 report () {
@@ -28,19 +31,43 @@ report () {
   [ "$header" ]
 }
 
+branch=`readlink "$GIT_DIR/HEAD"`
+case "$branch" in
+refs/heads/master) ;;
+*)	echo "# On branch $branch" ;;
+esac
+
 git-update-cache --refresh >/dev/null 2>&1
-git-diff-cache -M --cached HEAD | sed 's/^://' | report "Updated but not checked in" "will commit"
+
+git-diff-cache -M --cached HEAD |
+sed 's/^://' |
+report "Updated but not checked in" "will commit"
+
 committable="$?"
-git-diff-files | sed 's/^://' | report "Changed but not updated" "use git-update-cache to mark for commit"
+
+git-diff-files |
+sed 's/^://' |
+report "Changed but not updated" "use git-update-cache to mark for commit"
+
+if grep -v '^#' "$GIT_DIR/info/exclude" >/dev/null 2>&1
+then
+	git-ls-files --others \
+	    --exclude-from="$GIT_DIR/info/exclude" \
+	    --exclude-per-directory=.gitignore |
+	sed -e '
+	1i\
+#\
+# Ignored files:\
+#   (use "git add" to add to commit)\
+#
+	s/^/#	/
+	$a\
+#'
+fi
+
 if [ "$committable" == "0" ]
 then
 	echo "nothing to commit"
 	exit 1
 fi
-branch=`readlink "$GIT_DIR/HEAD"`
-case "$branch" in
-refs/heads/master) ;;
-*)	echo "#
-# On branch $branch" ;;
-esac
 exit 0
diff --git a/setup.c b/setup.c
index b8789de5c5..258da17615 100644
--- a/setup.c
+++ b/setup.c
@@ -72,6 +72,24 @@ const char **get_pathspec(const char *prefix, char **pathspec)
 	return (const char **) pathspec;
 }
 
+/*
+ * Test it it looks like we're at the top
+ * level git directory. We want to see a
+ *
+ *  - a HEAD symlink and a refs/ directory under ".git"
+ *  - either a .git/objects/ directory _or_ the proper
+ *    GIT_OBJECT_DIRECTORY environment variable
+ */
+static int is_toplevel_directory(void)
+{
+	struct stat st;
+
+	return	!lstat(".git/HEAD", &st) &&
+		S_ISLNK(st.st_mode) &&
+		!access(".git/refs/", X_OK) &&
+		(gitenv(DB_ENVIRONMENT) || !access(".git/objects/", X_OK));
+}
+
 const char *setup_git_directory(void)
 {
 	static char cwd[PATH_MAX+1];
@@ -89,17 +107,8 @@ const char *setup_git_directory(void)
 
 	offset = len = strlen(cwd);
 	for (;;) {
-		/*
-		 * We always want to see a .git/refs/ subdirectory
-		 */
-		if (!access(".git/refs/", X_OK)) {
-			/*
-			 * Then we need either a GIT_OBJECT_DIRECTORY define
-			 * or a .git/objects/ directory
-			 */
-			if (gitenv(DB_ENVIRONMENT) || !access(".git/objects/", X_OK))
-				break;
-		}
+		if (is_toplevel_directory())
+			break;
 		chdir("..");
 		do {
 			if (!offset)
diff --git a/t/t4109-apply-multifrag.sh b/t/t4109-apply-multifrag.sh
new file mode 100644
index 0000000000..5988e1ae4c
--- /dev/null
+++ b/t/t4109-apply-multifrag.sh
@@ -0,0 +1,176 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+# Copyright (c) 2005 Robert Fitzsimons
+#
+
+test_description='git-apply test patches with multiple fragments.
+
+'
+. ./test-lib.sh
+
+# setup
+
+cat > patch1.patch <<\EOF
+diff --git a/main.c b/main.c
+new file mode 100644
+--- /dev/null
++++ b/main.c
+@@ -0,0 +1,23 @@
++#include <stdio.h>
++
++int func(int num);
++void print_int(int num);
++
++int main() {
++	int i;
++
++	for (i = 0; i < 10; i++) {
++		print_int(func(i));
++	}
++
++	return 0;
++}
++
++int func(int num) {
++	return num * num;
++}
++
++void print_int(int num) {
++	printf("%d", num);
++}
++
+EOF
+cat > patch2.patch <<\EOF
+diff --git a/main.c b/main.c
+--- a/main.c
++++ b/main.c
+@@ -1,7 +1,9 @@
++#include <stdlib.h>
+ #include <stdio.h>
+ 
+ int func(int num);
+ void print_int(int num);
++void print_ln();
+ 
+ int main() {
+ 	int i;
+@@ -10,6 +12,8 @@
+ 		print_int(func(i));
+ 	}
+ 
++	print_ln();
++
+ 	return 0;
+ }
+ 
+@@ -21,3 +25,7 @@
+ 	printf("%d", num);
+ }
+ 
++void print_ln() {
++	printf("\n");
++}
++
+EOF
+cat > patch3.patch <<\EOF
+diff --git a/main.c b/main.c
+--- a/main.c
++++ b/main.c
+@@ -1,9 +1,7 @@
+-#include <stdlib.h>
+ #include <stdio.h>
+ 
+ int func(int num);
+ void print_int(int num);
+-void print_ln();
+ 
+ int main() {
+ 	int i;
+@@ -12,8 +10,6 @@
+ 		print_int(func(i));
+ 	}
+ 
+-	print_ln();
+-
+ 	return 0;
+ }
+ 
+@@ -25,7 +21,3 @@
+ 	printf("%d", num);
+ }
+ 
+-void print_ln() {
+-	printf("\n");
+-}
+-
+EOF
+cat > patch4.patch <<\EOF
+diff --git a/main.c b/main.c
+--- a/main.c
++++ b/main.c
+@@ -1,13 +1,14 @@
+ #include <stdio.h>
+ 
+ int func(int num);
+-void print_int(int num);
++int func2(int num);
+ 
+ int main() {
+ 	int i;
+ 
+ 	for (i = 0; i < 10; i++) {
+-		print_int(func(i));
++		printf("%d", func(i));
++		printf("%d", func3(i));
+ 	}
+ 
+ 	return 0;
+@@ -17,7 +18,7 @@
+ 	return num * num;
+ }
+ 
+-void print_int(int num) {
+-	printf("%d", num);
++int func2(int num) {
++	return num * num * num;
+ }
+ 
+EOF
+
+test_expect_success "S = git-apply (1)" \
+    'git-apply patch1.patch patch2.patch'
+mv main.c main.c.git
+
+test_expect_success "S = patch (1)" \
+    'cat patch1.patch patch2.patch | patch -p1'
+
+test_expect_success "S = cmp (1)" \
+    'cmp main.c.git main.c'
+
+rm -f main.c main.c.git
+
+test_expect_success "S = git-apply (2)" \
+    'git-apply patch1.patch patch2.patch patch3.patch'
+mv main.c main.c.git
+
+test_expect_success "S = patch (2)" \
+    'cat patch1.patch patch2.patch patch3.patch | patch -p1'
+
+test_expect_success "S = cmp (2)" \
+    'cmp main.c.git main.c'
+
+rm -f main.c main.c.git
+
+test_expect_success "S = git-apply (3)" \
+    'git-apply patch1.patch patch4.patch'
+mv main.c main.c.git
+
+test_expect_success "S = patch (3)" \
+    'cat patch1.patch patch4.patch | patch -p1'
+
+test_expect_success "S = cmp (3)" \
+    'cmp main.c.git main.c'
+
+test_done
+
diff --git a/t/t4110-apply-scan.sh b/t/t4110-apply-scan.sh
new file mode 100644
index 0000000000..005f744816
--- /dev/null
+++ b/t/t4110-apply-scan.sh
@@ -0,0 +1,101 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+# Copyright (c) 2005 Robert Fitzsimons
+#
+
+test_description='git-apply test for patches which require scanning forwards and backwards.
+
+'
+. ./test-lib.sh
+
+# setup
+
+cat > patch1.patch <<\EOF
+diff --git a/new.txt b/new.txt
+new file mode 100644
+--- /dev/null
++++ b/new.txt
+@@ -0,0 +1,12 @@
++a1
++a11
++a111
++a1111
++b1
++b11
++b111
++b1111
++c1
++c11
++c111
++c1111
+EOF
+cat > patch2.patch <<\EOF
+diff --git a/new.txt b/new.txt
+--- a/new.txt
++++ b/new.txt
+@@ -1,7 +1,3 @@
+-a1
+-a11
+-a111
+-a1111
+ b1
+ b11
+ b111
+EOF
+cat > patch3.patch <<\EOF
+diff --git a/new.txt b/new.txt
+--- a/new.txt
++++ b/new.txt
+@@ -6,6 +6,10 @@
+ b11
+ b111
+ b1111
++b2
++b22
++b222
++b2222
+ c1
+ c11
+ c111
+EOF
+cat > patch4.patch <<\EOF
+diff --git a/new.txt b/new.txt
+--- a/new.txt
++++ b/new.txt
+@@ -1,3 +1,7 @@
++a1
++a11
++a111
++a1111
+ b1
+ b11
+ b111
+EOF
+cat > patch5.patch <<\EOF
+diff --git a/new.txt b/new.txt
+--- a/new.txt
++++ b/new.txt
+@@ -10,3 +10,7 @@
+ c11
+ c111
+ c1111
++c2
++c22
++c222
++c2222
+EOF
+
+test_expect_success "S = git-apply scan" \
+    'git-apply patch1.patch patch2.patch patch3.patch patch4.patch patch5.patch'
+mv new.txt apply.txt
+
+test_expect_success "S = patch scan" \
+    'cat patch1.patch patch2.patch patch3.patch patch4.patch patch5.patch | patch'
+mv new.txt patch.txt
+
+test_expect_success "S = cmp" \
+    'cmp apply.txt patch.txt'
+
+test_done
+