Sync with 1.7.1.2

Documentation/RelNotes-1.7.0.7.txt

+Git v1.7.0.7 Release Notes
+==========================
+
+Fixes since v1.7.0.6
+--------------------
+
+ * "make NO_CURL=NoThanks install" was broken.
+
+ * An overlong line after ".gitdir: " in a git file caused out of bounds
+   access to an array on the stack.
+
+ * "git config --path conf.var" to attempt to expand a variable conf.var
+   that uses "~/" short-hand segfaulted when $HOME environment variable
+   was not set.
+
+And other minor fixes and documentation updates.

Documentation/RelNotes-1.7.1.2.txt

@@ -17,3 +17,12 @@ Fixes since v1.7.1.1
 
  * "git rev-parse --parseopt --stop-at-non-option" did not stop at non option
    when --keep-dashdash was in effect.
+
+ * An overlong line after ".gitdir: " in a git file caused out of bounds
+   access to an array on the stack.
+
+ * "git config --path conf.var" to attempt to expand a variable conf.var
+   that uses "~/" short-hand segfaulted when $HOME environment variable
+   was not set.
+
+And other minor fixes and documentation updates.

Documentation/git.txt

@@ -49,15 +49,17 @@ Documentation for older releases are available here:
 * release notes for
   link:RelNotes-1.7.2.txt[1.7.2].
 
-* link:v1.7.1.1/git.html[documentation for release 1.7.1.1]
+* link:v1.7.1.2/git.html[documentation for release 1.7.1.2]
 
 * release notes for
+  link:RelNotes-1.7.1.2.txt[1.7.1.2],
   link:RelNotes-1.7.1.1.txt[1.7.1.1],
   link:RelNotes-1.7.1.txt[1.7.1].
 
-* link:v1.7.0.6/git.html[documentation for release 1.7.0.6]
+* link:v1.7.0.7/git.html[documentation for release 1.7.0.7]
 
 * release notes for
+  link:RelNotes-1.7.0.7.txt[1.7.0.7],
   link:RelNotes-1.7.0.6.txt[1.7.0.6],
   link:RelNotes-1.7.0.5.txt[1.7.0.5],
   link:RelNotes-1.7.0.4.txt[1.7.0.4],

path.c

@@ -316,6 +316,8 @@ char *expand_user_path(const char *path)
 		size_t username_len = first_slash - username;
 		if (username_len == 0) {
 			const char *home = getenv("HOME");
+			if (!home)
+				goto return_null;
 			strbuf_add(&user_path, home, strlen(home));
 		} else {
 			struct passwd *pw = getpw_str(username, username_len);

t/t1300-repo-config.sh

@@ -707,19 +707,41 @@ test_expect_success 'set --path' '
 	git config --path path.trailingtilde "foo~" &&
 	test_cmp expect .git/config'
 
+if test "${HOME+set}"
+then
+	test_set_prereq HOMEVAR
+fi
+
 cat >expect <<EOF
 $HOME/
 /dev/null
 foo~
 EOF
 
-test_expect_success 'get --path' '
+test_expect_success HOMEVAR 'get --path' '
 	git config --get --path path.home > result &&
 	git config --get --path path.normal >> result &&
 	git config --get --path path.trailingtilde >> result &&
 	test_cmp expect result
 '
 
+cat >expect <<\EOF
+/dev/null
+foo~
+EOF
+
+test_expect_success 'get --path copes with unset $HOME' '
+	(
+		unset HOME;
+		test_must_fail git config --get --path path.home \
+			>result 2>msg &&
+		git config --get --path path.normal >>result &&
+		git config --get --path path.trailingtilde >>result
+	) &&
+	grep "[Ff]ailed to expand.*~/" msg &&
+	test_cmp expect result
+'
+
 rm .git/config
 
 git config quote.leading " test"