clone: print advice on checking out detached HEAD

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/advice.c b/advice.c
index e02e632df380a8e9772d9cd9b1282204c56a7d4e..3e1a145bf0b7eb482246f965da0997ab42706199 100644 (file)
--- a/advice.c
+++ b/advice.c
@@ -64,3 +64,17 @@ void NORETURN die_resolve_conflict(const char *me)
        error_resolve_conflict(me);
        die("Exiting because of an unresolved conflict.");
 }
+
+void detach_advice(const char *new_name)
+{
+       const char fmt[] =
+       "Note: checking out '%s'.\n\n"
+       "You are in 'detached HEAD' state. You can look around, make experimental\n"
+       "changes and commit them, and you can discard any commits you make in this\n"
+       "state without impacting any branches by performing another checkout.\n\n"
+       "If you want to create a new branch to retain commits you create, you may\n"
+       "do so (now or later) by using -b with the checkout command again. Example:\n\n"
+       "  git checkout -b new_branch_name\n\n";
+
+       fprintf(stderr, fmt, new_name);
+}

diff --git a/advice.h b/advice.h
index e5d0af782b1445b48b49cd58f481a593268c3384..7bda45b83e34b8417e5c20219c7424bb35b3d681 100644 (file)
--- a/advice.h
+++ b/advice.h
@@ -14,5 +14,6 @@ int git_default_advice_config(const char *var, const char *value);
 void advise(const char *advice, ...);
 int error_resolve_conflict(const char *me);
 extern void NORETURN die_resolve_conflict(const char *me);
+void detach_advice(const char *new_name);
 
 #endif /* ADVICE_H */

diff --git a/builtin/checkout.c b/builtin/checkout.c
index f1984d9933c526bcd2af66fd745dc64a607ac19b..5bf96ba4d41cc9c16bb5ccabe9857724ecfe2c12 100644 (file)
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -514,20 +514,6 @@ static void report_tracking(struct branch_info *new)
        strbuf_release(&sb);
 }
 
-static void detach_advice(const char *old_path, const char *new_name)
-{
-       const char fmt[] =
-       "Note: checking out '%s'.\n\n"
-       "You are in 'detached HEAD' state. You can look around, make experimental\n"
-       "changes and commit them, and you can discard any commits you make in this\n"
-       "state without impacting any branches by performing another checkout.\n\n"
-       "If you want to create a new branch to retain commits you create, you may\n"
-       "do so (now or later) by using -b with the checkout command again. Example:\n\n"
-       "  git checkout -b new_branch_name\n\n";
-
-       fprintf(stderr, fmt, new_name);
-}
-
 static void update_refs_for_switch(struct checkout_opts *opts,
                                   struct branch_info *old,
                                   struct branch_info *new)
@@ -575,7 +561,7 @@ static void update_refs_for_switch(struct checkout_opts *opts,
                           REF_NODEREF, DIE_ON_ERR);
                if (!opts->quiet) {
                        if (old->path && advice_detached_head)
-                               detach_advice(old->path, new->name);
+                               detach_advice(new->name);
                        describe_detached_head(_("HEAD is now at"), new->commit);
                }
        } else if (new->path) { /* Switch branches. */

diff --git a/builtin/clone.c b/builtin/clone.c
index 651b4cc20bd932876e35dd16f6ac2a7ecfc9b501..72eebca5350c740e39c07737685204acfb9f8c80 100644 (file)
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -563,7 +563,10 @@ static int checkout(void)
                          "unable to checkout.\n"));
                return 0;
        }
-       if (strcmp(head, "HEAD")) {
+       if (!strcmp(head, "HEAD")) {
+               if (advice_detached_head)
+                       detach_advice(sha1_to_hex(sha1));
+       } else {
                if (prefixcmp(head, "refs/heads/"))
                        die(_("HEAD not found below refs/heads!"));
        }