Also document this fact.

Signed-off-by: Marc Branchaud <marcn...@xiplink.com>
---

I ran into this bug when I had both fetch.recurseSubmodules=on-demand and
submodule.recurse=true, and submodule.recurse was set *after*
fetch.recurseSubmodules in my config.

The fix ensures that fetch.recurseSubmodules always overrides
submodule.recurse.  If neither is set then fetch still behaves as if
fetch.recurseSubmodules=on-demand (the documented default).

I'm not sure if this is the most elegant implementation, but it gets the job
done.

                M.


 Documentation/config.txt | 6 ++++--
 builtin/fetch.c          | 5 ++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index eb66a11975..67b0adc1d4 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1514,7 +1514,8 @@ fetch.recurseSubmodules::
        recurse at all when set to false. When set to 'on-demand' (the default
        value), fetch and pull will only recurse into a populated submodule
        when its superproject retrieves a commit that updates the submodule's
-       reference.
+       reference.  This option overrides the more general submodule.recurse
+       option, for the `fetch` command.
 
 fetch.fsckObjects::
        If it is set to true, git-fetch-pack will check all fetched
@@ -3465,7 +3466,8 @@ submodule.active::
 submodule.recurse::
        Specifies if commands recurse into submodules by default. This
        applies to all commands that have a `--recurse-submodules` option,
-       except `clone`.
+       except `clone`.  Also, the `fetch` command's behaviour can be specified
+       independently with the fetch.recurseSubmodules option.
        Defaults to false.
 
 submodule.fetchJobs::
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 61bec5d213..08b8bf2741 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -60,6 +60,7 @@ static struct transport *gsecondary;
 static const char *submodule_prefix = "";
 static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
 static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
+static int recurse_submodules_set_explicitly = 0;
 static int shown_url = 0;
 static struct refspec refmap = REFSPEC_INIT_FETCH;
 static struct list_objects_filter_options filter_options;
@@ -78,7 +79,8 @@ static int git_fetch_config(const char *k, const char *v, 
void *cb)
                return 0;
        }
 
-       if (!strcmp(k, "submodule.recurse")) {
+       if (!strcmp(k, "submodule.recurse") &&
+           !recurse_submodules_set_explicitly) {
                int r = git_config_bool(k, v) ?
                        RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
                recurse_submodules = r;
@@ -88,6 +90,7 @@ static int git_fetch_config(const char *k, const char *v, 
void *cb)
                max_children = parse_submodule_fetchjobs(k, v);
                return 0;
        } else if (!strcmp(k, "fetch.recursesubmodules")) {
+               recurse_submodules_set_explicitly = 1;
                recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
                return 0;
        }
-- 
2.19.0.1.g5109f9487a

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