Make "git rev-list" be a builtin

This was surprisingly easy. The diff is truly minimal: rename "main()" to
"cmd_rev_list()" in rev-list.c, and rename the whole file to reflect its
new built-in status.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

Makefile

@@ -158,7 +158,7 @@ PROGRAMS = \
 	git-ls-files$X git-ls-tree$X git-mailinfo$X git-merge-base$X \
 	git-merge-index$X git-mktag$X git-mktree$X git-pack-objects$X git-patch-id$X \
 	git-peek-remote$X git-prune-packed$X git-read-tree$X \
-	git-receive-pack$X git-rev-list$X git-rev-parse$X \
+	git-receive-pack$X git-rev-parse$X \
 	git-send-pack$X git-show-branch$X git-shell$X \
 	git-show-index$X git-ssh-fetch$X \
 	git-ssh-upload$X git-tar-tree$X git-unpack-file$X \
@@ -170,7 +170,7 @@ PROGRAMS = \
 
 BUILT_INS = git-log$X git-whatchanged$X git-show$X \
 	git-count-objects$X git-diff$X git-push$X \
-	git-grep$X
+	git-grep$X git-rev-list$X
 
 # what 'all' will build and 'install' will install, in gitexecdir
 ALL_PROGRAMS = $(PROGRAMS) $(SIMPLE_PROGRAMS) $(SCRIPTS)
@@ -218,7 +218,7 @@ LIB_OBJS = \
 
 BUILTIN_OBJS = \
 	builtin-log.o builtin-help.o builtin-count.o builtin-diff.o builtin-push.o \
-	builtin-grep.o
+	builtin-grep.o builtin-rev-list.o
 
 GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
 LIBS = $(GITLIBS) -lz

rev-list.c → builtin-rev-list.c

@@ -7,6 +7,7 @@
 #include "tree-walk.h"
 #include "diff.h"
 #include "revision.h"
+#include "builtin.h"
 
 /* bits #0-15 in revision.h */
 
@@ -36,7 +37,7 @@ static const char rev_list_usage[] =
 "    --bisect"
 ;
 
-struct rev_info revs;
+static struct rev_info revs;
 
 static int bisect_list = 0;
 static int show_timestamp = 0;
@@ -291,7 +292,7 @@ static void mark_edges_uninteresting(struct commit_list *list)
 	}
 }
 
-int main(int argc, const char **argv)
+int cmd_rev_list(int argc, const char **argv, char **envp)
 {
 	struct commit_list *list;
 	int i;

builtin.h

@@ -24,5 +24,6 @@ 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);
+extern int cmd_rev_list(int argc, const char **argv, char **envp);
 
 #endif

git.c

@@ -50,6 +50,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
 		{ "count-objects", cmd_count_objects },
 		{ "diff", cmd_diff },
 		{ "grep", cmd_grep },
+		{ "rev-list", cmd_rev_list },
 	};
 	int i;