[PATCH 1/8] submodule recursing: do not write a config variable twice

[Stefan Beller <sbeller@google.com>]

The command line option for '--recurse-submodules' is implemented
using an OPTION_CALLBACK, which takes both the callback (that sets
the file static global variable) as well as passes the same file
static global variable to the option parsing machinery to assign it.
This is fixed in this commit by passing NULL as the variable. The
callback sets it instead

Signed-off-by: Stefan Beller <sbeller@google.com>
---
 builtin/checkout.c  | 2 +-
 builtin/read-tree.c | 2 +-
 builtin/reset.c     | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/builtin/checkout.c b/builtin/checkout.c
index bfa5419f33..0fd57672cc 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1181,7 +1181,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 				N_("second guess 'git checkout <no-such-branch>'")),
 		OPT_BOOL(0, "ignore-other-worktrees", &opts.ignore_other_worktrees,
 			 N_("do not check if another worktree is holding the given ref")),
-		{ OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules,
+		{ OPTION_CALLBACK, 0, "recurse-submodules", NULL,
 			    "checkout", "control recursive updating of submodules",
 			    PARSE_OPT_OPTARG, option_parse_recurse_submodules },
 		OPT_BOOL(0, "progress", &opts.show_progress, N_("force progress reporting")),
diff --git a/builtin/read-tree.c b/builtin/read-tree.c
index 23e212ee8c..2a1b8a530e 100644
--- a/builtin/read-tree.c
+++ b/builtin/read-tree.c
@@ -157,7 +157,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
 			 N_("skip applying sparse checkout filter")),
 		OPT_BOOL(0, "debug-unpack", &opts.debug_unpack,
 			 N_("debug unpack-trees")),
-		{ OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules,
+		{ OPTION_CALLBACK, 0, "recurse-submodules", NULL,
 			    "checkout", "control recursive updating of submodules",
 			    PARSE_OPT_OPTARG, option_parse_recurse_submodules },
 		OPT_END()
diff --git a/builtin/reset.c b/builtin/reset.c
index 5ce27fcaed..1e5f85b1fb 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -304,7 +304,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
 				N_("reset HEAD, index and working tree"), MERGE),
 		OPT_SET_INT(0, "keep", &reset_type,
 				N_("reset HEAD but keep local changes"), KEEP),
-		{ OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules,
+		{ OPTION_CALLBACK, 0, "recurse-submodules", NULL,
 			    "reset", "control recursive updating of submodules",
 			    PARSE_OPT_OPTARG, option_parse_recurse_submodules },
 		OPT_BOOL('p', "patch", &patch_mode, N_("select hunks interactively")),
-- 
2.13.0.17.g582985b1e4