[PATCH 2/2] add 'scope' config option

[Clemens Buchacher <drizzd@aon.at>]

Documentation/config.txt says it all.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
---
 Documentation/config.txt |    6 ++++++
 builtin-add.c            |    2 +-
 builtin-grep.c           |    2 +-
 cache.h                  |    1 +
 config.c                 |    8 ++++++++
 environment.c            |    1 +
 6 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 5256c7f..f587cf1 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -439,6 +439,12 @@ On some file system/operating system combinations, this is unreliable.
 Set this config setting to 'rename' there; However, This will remove the
 check that makes sure that existing object files will not get overwritten.
 
+core.scope::
+	By default, the commands 'git add -u', 'git add -A' and 'git grep'
+	are limited to files below the current working directory
+	(scope='workdir'). Set this variable to scope='global' to make these
+	commands act on the whole tree instead.
+
 add.ignore-errors::
 	Tells 'git-add' to continue adding files when some files cannot be
 	added due to indexing errors. Equivalent to the '--ignore-errors'
diff --git a/builtin-add.c b/builtin-add.c
index 006fd08..33ea3e4 100644
--- a/builtin-add.c
+++ b/builtin-add.c
@@ -285,7 +285,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 
 	if (addremove && take_worktree_changes)
 		die("-A and -u are mutually incompatible");
-	if ((addremove || take_worktree_changes) && !argc) {
+	if (!scope_global && (addremove || take_worktree_changes) && !argc) {
 		static const char *here[2] = { ".", NULL };
 		argc = 1;
 		argv = here;
diff --git a/builtin-grep.c b/builtin-grep.c
index f6af3d4..447b195 100644
--- a/builtin-grep.c
+++ b/builtin-grep.c
@@ -861,7 +861,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
 
 	if (i < argc)
 		paths = get_pathspec(prefix, argv + i);
-	else if (prefix) {
+	else if (!scope_global && prefix) {
 		paths = xcalloc(2, sizeof(const char *));
 		paths[0] = prefix;
 		paths[1] = NULL;
diff --git a/cache.h b/cache.h
index 5fad24c..85c5fee 100644
--- a/cache.h
+++ b/cache.h
@@ -523,6 +523,7 @@ extern int auto_crlf;
 extern int read_replace_refs;
 extern int fsync_object_files;
 extern int core_preload_index;
+extern int scope_global;
 
 enum safe_crlf {
 	SAFE_CRLF_FALSE = 0,
diff --git a/config.c b/config.c
index e87edea..8dec019 100644
--- a/config.c
+++ b/config.c
@@ -503,6 +503,14 @@ static int git_default_core_config(const char *var, const char *value)
 		return 0;
 	}
 
+	if (!strcmp(var, "core.scope")) {
+		if (!strcasecmp(value, "global"))
+			scope_global = 1;
+		if (!strcasecmp(value, "worktree"))
+			scope_global = 0;
+		return 0;
+	}
+
 	/* Add other config variables here and to Documentation/config.txt. */
 	return 0;
 }
diff --git a/environment.c b/environment.c
index 5de6837..4d1c6e1 100644
--- a/environment.c
+++ b/environment.c
@@ -50,6 +50,7 @@ enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
 #endif
 enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
 int grafts_replace_parents = 1;
+int scope_global = 0;
 
 /* Parallel index stat data preload? */
 int core_preload_index = 0;
-- 
1.6.4.2.264.g79b4f