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@xxxxxxxxx>
---
Range-diff:
1: d8c3242b31 ! 1: 180435ff15 branch: description for non-existent branch errors
@@ Commit message
considering the _empty repository_ circumstance in its error. Also note
that "-m" on the initial branch it is an allowed operation.
- This commit makes the error descriptions for those branch operations
- with unborn or non-existent branches, more informative.
+ Make the error descriptions for those branch operations with unborn or
+ non-existent branches, more informative.
This is the result of the change:
builtin/branch.c | 14 +++++++++++--
t/t3202-show-branch.sh | 46 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 58 insertions(+), 2 deletions(-)
diff --git a/builtin/branch.c b/builtin/branch.c
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,
diff --git a/t/t3202-show-branch.sh b/t/t3202-show-branch.sh
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
--
2.32.0
