@matheusbsbs / matheus-bagliano / commits / bcfc82bd48

branch: description for non-existent branch errors

When the repository does not yet have commits, some errors describe that there is no branch: $ git init -b first $ git branch --edit-description first error: No branch named 'first'. $ git branch --set-upstream-to=upstream fatal: branch 'first' does not exist $ git branch -c second error: refname refs/heads/first not found fatal: Branch copy failed That "first" branch is unborn but to say it doesn't exists is confusing. Options "-c" (copy) and "-m" (rename) show the same error when the origin branch doesn't exists: $ git branch -c non-existent-branch second error: refname refs/heads/non-existent-branch not found fatal: Branch copy failed $ git branch -m non-existent-branch second error: refname refs/heads/non-existent-branch not found fatal: Branch rename failed Note that "--edit-description" without an explicit argument is already considering the _empty repository_ circumstance in its error. Also note that "-m" on the initial branch it is an allowed operation. Make the error descriptions for those branch operations with unborn or non-existent branches, more informative. This is the result of the change: $ git init -b first $ git branch --edit-description first error: No commit on branch 'first' yet. $ git branch --set-upstream-to=upstream fatal: No commit on branch 'first' yet. $ git branch -c second fatal: No commit on branch 'first' yet. $ git branch [-c/-m] non-existent-branch second fatal: No branch named 'non-existent-branch'. Signed-off-by: Rubén Justo <rjusto@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Rubén Justo committed Oct 8, 2022 at 02:39 UTC bcfc82bd48f518c8939090748516ad21bb079720
2 files changed +58 -2
builtin/branch.c
+12 -2
index 55cd9a6e99..499ebec99e 100644 --- a/builtin/branch.c +++ b/builtin/branch.c @@ -538,6 +538,13 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int die(_("Invalid branch name: '%s'"), oldname); } + if ((copy || strcmp(head, oldname)) && !ref_exists(oldref.buf)) { + if (copy && !strcmp(head, oldname)) + die(_("No commit on branch '%s' yet."), oldname); + else + die(_("No branch named '%s'."), oldname); + } + /* * A command like "git branch -M currentbranch currentbranch" cannot * cause the worktree to become inconsistent with HEAD, so allow it. @@ -805,7 +812,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix) if (!ref_exists(branch_ref.buf)) { strbuf_release(&branch_ref); - if (!argc) + if (!argc || !strcmp(head, branch_name)) return error(_("No commit on branch '%s' yet."), branch_name); else @@ -848,8 +855,11 @@ int cmd_branch(int argc, const char **argv, const char *prefix) die(_("no such branch '%s'"), argv[0]); } - if (!ref_exists(branch->refname)) + if (!ref_exists(branch->refname)) { + if (!argc || !strcmp(head, branch->name)) + die(_("No commit on branch '%s' yet."), branch->name); die(_("branch '%s' does not exist"), branch->name); + } dwim_and_setup_tracking(the_repository, branch->name, new_upstream, BRANCH_TRACK_OVERRIDE,
t/t3202-show-branch.sh
+46
index f2b9199007..ea7cfd1951 100755 --- a/t/t3202-show-branch.sh +++ b/t/t3202-show-branch.sh @@ -7,6 +7,28 @@ test_description='test show-branch' # arbitrary reference time: 2009-08-30 19:20:00 GIT_TEST_DATE_NOW=1251660000; export GIT_TEST_DATE_NOW +test_expect_success 'error descriptions on empty repository' ' + current=$(git branch --show-current) && + cat >expect <<-EOF && + error: No commit on branch '\''$current'\'' yet. + EOF + test_must_fail git branch --edit-description 2>actual && + test_cmp expect actual && + test_must_fail git branch --edit-description $current 2>actual && + test_cmp expect actual +' + +test_expect_success 'fatal descriptions on empty repository' ' + current=$(git branch --show-current) && + cat >expect <<-EOF && + fatal: No commit on branch '\''$current'\'' yet. + EOF + test_must_fail git branch --set-upstream-to=non-existent 2>actual && + test_cmp expect actual && + test_must_fail git branch -c new-branch 2>actual && + test_cmp expect actual +' + test_expect_success 'setup' ' test_commit initial && for i in $(test_seq 1 10) @@ -175,4 +197,28 @@ done <<\EOF --reflog --current EOF +test_expect_success 'error descriptions on non-existent branch' ' + cat >expect <<-EOF && + error: No branch named '\''non-existent'\'.' + EOF + test_must_fail git branch --edit-description non-existent 2>actual && + test_cmp expect actual +' + +test_expect_success 'fatal descriptions on non-existent branch' ' + cat >expect <<-EOF && + fatal: branch '\''non-existent'\'' does not exist + EOF + test_must_fail git branch --set-upstream-to=non-existent non-existent 2>actual && + test_cmp expect actual && + + cat >expect <<-EOF && + fatal: No branch named '\''non-existent'\''. + EOF + test_must_fail git branch -c non-existent new-branch 2>actual && + test_cmp expect actual && + test_must_fail git branch -m non-existent new-branch 2>actual && + test_cmp expect actual +' + test_done