[PATCH v4 06/19] pull: move default warning

[Felipe Contreras <felipe.contreras@gmail.com>]

Eventually we want to be able to display the warning only when
fast-forward merges are not possible.

In order to do so we need to move the default warning up to the point
where we can check if we can fast-forward or not.

Additionally, config_get_rebase() was probably never its true home.

This requires a temporary variable to check if we are in the
"default mode" (no --rebase or --no-rebase specified). But this is only
temporary; another patch in the series gets rid of that.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 builtin/pull.c | 37 ++++++++++++++++++++++---------------
 1 file changed, 22 insertions(+), 15 deletions(-)

diff --git a/builtin/pull.c b/builtin/pull.c
index 6aeca4aeae..3b84ebf100 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -27,6 +27,8 @@
 #include "commit-reach.h"
 #include "sequencer.h"
 
+static int default_mode;
+
 /**
  * Parses the value of --rebase. If value is a false value, returns
  * REBASE_FALSE. If value is a true value, returns REBASE_TRUE. If value is
@@ -344,20 +346,7 @@ static enum rebase_type config_get_rebase(void)
 	if (!git_config_get_value("pull.rebase", &value))
 		return parse_config_rebase("pull.rebase", value, 1);
 
-	if (opt_verbosity >= 0 && !opt_ff) {
-		advise(_("Pulling without specifying how to reconcile divergent branches is discouraged;\n"
-			"you need to specify if you want a merge, or a rebase.\n"
-			"You can squelch this message by running one of the following commands:\n"
-			"\n"
-			"  git config pull.rebase false  # merge (the default strategy)\n"
-			"  git config pull.rebase true   # rebase\n"
-			"  git config pull.ff only       # fast-forward only\n"
-			"\n"
-			"You can replace \"git config\" with \"git config --global\" to set a default\n"
-			"preference for all repositories.\n"
-			"If unsure, run \"git pull --no-rebase\".\n"
-			"Read \"git pull --help\" for more information."));
-	}
+	default_mode = 1;
 
 	return REBASE_FALSE;
 }
@@ -944,6 +933,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 	struct oid_array merge_heads = OID_ARRAY_INIT;
 	struct object_id orig_head, curr_head;
 	struct object_id rebase_fork_point;
+	int can_ff;
 
 	if (!getenv("GIT_REFLOG_ACTION"))
 		set_reflog_message(argc, argv);
@@ -1039,6 +1029,23 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 	if (opt_rebase && merge_heads.nr > 1)
 		die(_("Cannot rebase onto multiple branches."));
 
+	can_ff = get_can_ff(&orig_head, &merge_heads.oid[0]);
+
+	if (default_mode && opt_verbosity >= 0 && !opt_ff) {
+		advise(_("Pulling without specifying how to reconcile divergent branches is discouraged;\n"
+			"you need to specify if you want a merge, or a rebase.\n"
+			"You can squelch this message by running one of the following commands:\n"
+			"\n"
+			"  git config pull.rebase false  # merge (the default strategy)\n"
+			"  git config pull.rebase true   # rebase\n"
+			"  git config pull.ff only       # fast-forward only\n"
+			"\n"
+			"You can replace \"git config\" with \"git config --global\" to set a default\n"
+			"preference for all repositories.\n"
+			"If unsure, run \"git pull --no-rebase\".\n"
+			"Read \"git pull --help\" for more information."));
+	}
+
 	if (opt_rebase) {
 		int ret = 0;
 
@@ -1052,7 +1059,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 		    submodule_touches_in_range(the_repository, &upstream, &curr_head))
 			die(_("cannot rebase with locally recorded submodule modifications"));
 
-		if (get_can_ff(&orig_head, &merge_heads.oid[0])) {
+		if (can_ff) {
 			/* we can fast-forward this without invoking rebase */
 			opt_ff = "--ff-only";
 			ret = run_merge();
-- 
2.29.2