diff --git a/advice.c b/advice.c index 3bc86260b8..a8deee6e64 100644 --- a/advice.c +++ b/advice.c @@ -13,6 +13,7 @@ int advice_commit_before_merge = 1; int advice_resolve_conflict = 1; int advice_implicit_identity = 1; int advice_detached_head = 1; +int advice_set_upstream_failure = 1; static struct { const char *name; @@ -31,6 +32,7 @@ static struct { { "resolveconflict", &advice_resolve_conflict }, { "implicitidentity", &advice_implicit_identity }, { "detachedhead", &advice_detached_head }, + { "setupstreamfailure", &advice_set_upstream_failure }, /* make this an alias for backward compatibility */ { "pushnonfastforward", &advice_push_update_rejected } diff --git a/advice.h b/advice.h index af0c983c68..94caa32f92 100644 --- a/advice.h +++ b/advice.h @@ -16,6 +16,7 @@ extern int advice_commit_before_merge; extern int advice_resolve_conflict; extern int advice_implicit_identity; extern int advice_detached_head; +extern int advice_set_upstream_failure; int git_default_advice_config(const char *var, const char *value); void advise(const char *advice, ...); diff --git a/branch.c b/branch.c index 2bef1e7e71..6ae6a4c321 100644 --- a/branch.c +++ b/branch.c @@ -197,6 +197,20 @@ int validate_new_branchname(const char *name, struct strbuf *ref, return 1; } +static const char upstream_not_branch[] = +N_("Cannot setup tracking information; starting point '%s' is not a branch."); +static const char upstream_missing[] = +N_("the requested upstream branch '%s' does not exist"); +static const char upstream_advice[] = +N_("\n" +"If you are planning on basing your work on an upstream\n" +"branch that already exists at the remote, you may need to\n" +"run \"git fetch\" to retrieve it.\n" +"\n" +"If you are planning to push out a new local branch that\n" +"will track its remote counterpart, you may want to use\n" +"\"git push -u\" to set the upstream config as you push."); + void create_branch(const char *head, const char *name, const char *start_name, int force, int reflog, int clobber_head, @@ -224,21 +238,30 @@ void create_branch(const char *head, } real_ref = NULL; - if (get_sha1(start_name, sha1)) + if (get_sha1(start_name, sha1)) { + if (explicit_tracking) { + if (advice_set_upstream_failure) { + error(_(upstream_missing), start_name); + advise(_(upstream_advice)); + exit(1); + } + die(_(upstream_missing), start_name); + } die("Not a valid object name: '%s'.", start_name); + } switch (dwim_ref(start_name, strlen(start_name), sha1, &real_ref)) { case 0: /* Not branching from any existing branch */ if (explicit_tracking) - die("Cannot setup tracking information; starting point is not a branch."); + die(_(upstream_not_branch), start_name); break; case 1: /* Unique completion -- good, only if it is a real branch */ if (prefixcmp(real_ref, "refs/heads/") && prefixcmp(real_ref, "refs/remotes/")) { if (explicit_tracking) - die("Cannot setup tracking information; starting point is not a branch."); + die(_(upstream_not_branch), start_name); else real_ref = NULL; } diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh index 8311c7da44..d969f0ecd8 100755 --- a/t/t3200-branch.sh +++ b/t/t3200-branch.sh @@ -409,6 +409,18 @@ test_expect_success '--set-upstream-to fails on detached HEAD' ' git checkout - ' +test_expect_success '--set-upstream-to fails on a missing dst branch' ' + test_must_fail git branch --set-upstream-to master does-not-exist +' + +test_expect_success '--set-upstream-to fails on a missing src branch' ' + test_must_fail git branch --set-upstream-to does-not-exist master +' + +test_expect_success '--set-upstream-to fails on a non-ref' ' + test_must_fail git branch --set-upstream-to HEAD^{} +' + test_expect_success 'use --set-upstream-to modify HEAD' ' test_config branch.master.remote foo && test_config branch.master.merge foo &&