[PATCH v3] builtin/branch.c: adjust error messages to coding guidelines

[Isoken June Ibizugbe <isokenjune@gmail.com>]

As per the CodingGuidelines document, it is recommended that error messages such as die(), error() and warning(),
should start with a lowercase letter and should not end with a period.

This patch adjusts tests to match updated messages.

Signed-off-by: Isoken June Ibizugbe <isokenjune@gmail.com>
---
 builtin/branch.c          | 66 +++++++++++++++++++--------------------
 t/t2407-worktree-heads.sh |  2 +-
 t/t3200-branch.sh         | 16 +++++-----
 t/t3202-show-branch.sh    | 10 +++---
 4 files changed, 47 insertions(+), 47 deletions(-)

diff --git a/builtin/branch.c b/builtin/branch.c
index 2ec190b14a..e7ee9bd0f1 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -173,11 +173,11 @@ static int branch_merged(int kind, const char *name,
 	    (head_rev ? repo_in_merge_bases(the_repository, rev, head_rev) : 0) != merged) {
 		if (merged)
 			warning(_("deleting branch '%s' that has been merged to\n"
-				"         '%s', but not yet merged to HEAD."),
+				"         '%s', but not yet merged to HEAD"),
 				name, reference_name);
 		else
 			warning(_("not deleting branch '%s' that is not yet merged to\n"
-				"         '%s', even though it is merged to HEAD."),
+				"         '%s', even though it is merged to HEAD"),
 				name, reference_name);
 	}
 	free(reference_name_to_free);
@@ -190,13 +190,13 @@ static int check_branch_commit(const char *branchname, const char *refname,
 {
 	struct commit *rev = lookup_commit_reference(the_repository, oid);
 	if (!force && !rev) {
-		error(_("Couldn't look up commit object for '%s'"), refname);
+		error(_("couldn't look up commit object for '%s'"), refname);
 		return -1;
 	}
 	if (!force && !branch_merged(kinds, branchname, rev, head_rev)) {
-		error(_("The branch '%s' is not fully merged.\n"
+		error(_("the branch '%s' is not fully merged.\n"
 		      "If you are sure you want to delete it, "
-		      "run 'git branch -D %s'."), branchname, branchname);
+		      "run 'git branch -D %s'"), branchname, branchname);
 		return -1;
 	}
 	return 0;
@@ -207,7 +207,7 @@ static void delete_branch_config(const char *branchname)
 	struct strbuf buf = STRBUF_INIT;
 	strbuf_addf(&buf, "branch.%s", branchname);
 	if (git_config_rename_section(buf.buf, NULL) < 0)
-		warning(_("Update of config-file failed"));
+		warning(_("update of config-file failed"));
 	strbuf_release(&buf);
 }
 
@@ -260,7 +260,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 		if (kinds == FILTER_REFS_BRANCHES) {
 			const char *path;
 			if ((path = branch_checked_out(name))) {
-				error(_("Cannot delete branch '%s' "
+				error(_("cannot delete branch '%s' "
 					"used by worktree at '%s'"),
 				      bname.buf, path);
 				ret = 1;
@@ -275,7 +275,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 					&oid, &flags);
 		if (!target) {
 			if (remote_branch) {
-				error(_("remote-tracking branch '%s' not found."), bname.buf);
+				error(_("remote-tracking branch '%s' not found"), bname.buf);
 			} else {
 				char *virtual_name = mkpathdup(fmt_remotes, bname.buf);
 				char *virtual_target = resolve_refdup(virtual_name,
@@ -290,7 +290,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 						"Did you forget --remote?"),
 						bname.buf);
 				else
-					error(_("branch '%s' not found."), bname.buf);
+					error(_("branch '%s' not found"), bname.buf);
 				FREE_AND_NULL(virtual_target);
 			}
 			ret = 1;
@@ -518,11 +518,11 @@ static void reject_rebase_or_bisect_branch(struct worktree **worktrees,
 			continue;
 
 		if (is_worktree_being_rebased(wt, target))
-			die(_("Branch %s is being rebased at %s"),
+			die(_("branch %s is being rebased at %s"),
 			    target, wt->path);
 
 		if (is_worktree_being_bisected(wt, target))
-			die(_("Branch %s is being bisected at %s"),
+			die(_("branch %s is being bisected at %s"),
 			    target, wt->path);
 	}
 }
@@ -578,7 +578,7 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 		if (ref_exists(oldref.buf))
 			recovery = 1;
 		else
-			die(_("Invalid branch name: '%s'"), oldname);
+			die(_("invalid branch name: '%s'"), oldname);
 	}
 
 	for (int i = 0; worktrees[i]; i++) {
@@ -594,9 +594,9 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 
 	if ((copy || !(oldref_usage & IS_HEAD)) && !ref_exists(oldref.buf)) {
 		if (oldref_usage & IS_HEAD)
-			die(_("No commit on branch '%s' yet."), oldname);
+			die(_("no commit on branch '%s' yet"), oldname);
 		else
-			die(_("No branch named '%s'."), oldname);
+			die(_("no branch named '%s'"), oldname);
 	}
 
 	/*
@@ -624,32 +624,32 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 
 	if (!copy && !(oldref_usage & IS_ORPHAN) &&
 	    rename_ref(oldref.buf, newref.buf, logmsg.buf))
-		die(_("Branch rename failed"));
+		die(_("branch rename failed"));
 	if (copy && copy_existing_ref(oldref.buf, newref.buf, logmsg.buf))
-		die(_("Branch copy failed"));
+		die(_("branch copy failed"));
 
 	if (recovery) {
 		if (copy)
-			warning(_("Created a copy of a misnamed branch '%s'"),
+			warning(_("created a copy of a misnamed branch '%s'"),
 				interpreted_oldname);
 		else
-			warning(_("Renamed a misnamed branch '%s' away"),
+			warning(_("renamed a misnamed branch '%s' away"),
 				interpreted_oldname);
 	}
 
 	if (!copy && (oldref_usage & IS_HEAD) &&
 	    replace_each_worktree_head_symref(worktrees, oldref.buf, newref.buf,
 					      logmsg.buf))
-		die(_("Branch renamed to %s, but HEAD is not updated!"), newname);
+		die(_("branch renamed to %s, but HEAD is not updated"), newname);
 
 	strbuf_release(&logmsg);
 
 	strbuf_addf(&oldsection, "branch.%s", interpreted_oldname);
 	strbuf_addf(&newsection, "branch.%s", interpreted_newname);
 	if (!copy && git_config_rename_section(oldsection.buf, newsection.buf) < 0)
-		die(_("Branch is renamed, but update of config-file failed"));
+		die(_("branch is renamed, but update of config-file failed"));
 	if (copy && strcmp(interpreted_oldname, interpreted_newname) && git_config_copy_section(oldsection.buf, newsection.buf) < 0)
-		die(_("Branch is copied, but update of config-file failed"));
+		die(_("branch is copied, but update of config-file failed"));
 	strbuf_release(&oldref);
 	strbuf_release(&newref);
 	strbuf_release(&oldsection);
@@ -773,7 +773,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 
 	head = resolve_refdup("HEAD", 0, &head_oid, NULL);
 	if (!head)
-		die(_("Failed to resolve HEAD as a valid ref."));
+		die(_("failed to resolve HEAD as a valid ref"));
 	if (!strcmp(head, "HEAD"))
 		filter.detached = 1;
 	else if (!skip_prefix(head, "refs/heads/", &head))
@@ -866,7 +866,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 
 		if (!argc) {
 			if (filter.detached)
-				die(_("Cannot give description to detached HEAD"));
+				die(_("cannot give description to detached HEAD"));
 			branch_name = head;
 		} else if (argc == 1) {
 			strbuf_branchname(&buf, argv[0], INTERPRET_BRANCH_LOCAL);
@@ -878,8 +878,8 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 		strbuf_addf(&branch_ref, "refs/heads/%s", branch_name);
 		if (!ref_exists(branch_ref.buf))
 			error((!argc || branch_checked_out(branch_ref.buf))
-			      ? _("No commit on branch '%s' yet.")
-			      : _("No branch named '%s'."),
+			      ? _("no commit on branch '%s' yet")
+			      : _("no branch named '%s'"),
 			      branch_name);
 		else if (!edit_branch_description(branch_name))
 			ret = 0; /* happy */
@@ -892,8 +892,8 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 		if (!argc)
 			die(_("branch name required"));
 		else if ((argc == 1) && filter.detached)
-			die(copy? _("cannot copy the current branch while not on any.")
-				: _("cannot rename the current branch while not on any."));
+			die(copy? _("cannot copy the current branch while not on any")
+				: _("cannot rename the current branch while not on any"));
 		else if (argc == 1)
 			copy_or_rename_branch(head, argv[0], copy, copy + rename > 1);
 		else if (argc == 2)
@@ -916,14 +916,14 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 		if (!branch) {
 			if (!argc || !strcmp(argv[0], "HEAD"))
 				die(_("could not set upstream of HEAD to %s when "
-				      "it does not point to any branch."),
+				      "it does not point to any branch"),
 				    new_upstream);
 			die(_("no such branch '%s'"), argv[0]);
 		}
 
 		if (!ref_exists(branch->refname)) {
 			if (!argc || branch_checked_out(branch->refname))
-				die(_("No commit on branch '%s' yet."), branch->name);
+				die(_("no commit on branch '%s' yet"), branch->name);
 			die(_("branch '%s' does not exist"), branch->name);
 		}
 
@@ -946,12 +946,12 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 		if (!branch) {
 			if (!argc || !strcmp(argv[0], "HEAD"))
 				die(_("could not unset upstream of HEAD when "
-				      "it does not point to any branch."));
+				      "it does not point to any branch"));
 			die(_("no such branch '%s'"), argv[0]);
 		}
 
 		if (!branch_has_merge_config(branch))
-			die(_("Branch '%s' has no upstream information"), branch->name);
+			die(_("branch '%s' has no upstream information"), branch->name);
 
 		strbuf_reset(&buf);
 		strbuf_addf(&buf, "branch.%s.remote", branch->name);
@@ -965,11 +965,11 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 		const char *start_name = argc == 2 ? argv[1] : head;
 
 		if (filter.kind != FILTER_REFS_BRANCHES)
-			die(_("The -a, and -r, options to 'git branch' do not take a branch name.\n"
+			die(_("the -a, and -r, options to 'git branch' do not take a branch name.\n"
 				  "Did you mean to use: -a|-r --list <pattern>?"));
 
 		if (track == BRANCH_TRACK_OVERRIDE)
-			die(_("the '--set-upstream' option is no longer supported. Please use '--track' or '--set-upstream-to' instead."));
+			die(_("the '--set-upstream' option is no longer supported. Please use '--track' or '--set-upstream-to' instead"));
 
 		if (recurse_submodules) {
 			create_branches_recursively(the_repository, branch_name,
diff --git a/t/t2407-worktree-heads.sh b/t/t2407-worktree-heads.sh
index 469443d8ae..f6835c91dc 100755
--- a/t/t2407-worktree-heads.sh
+++ b/t/t2407-worktree-heads.sh
@@ -45,7 +45,7 @@ test_expect_success 'refuse to overwrite: checked out in worktree' '
 		grep "cannot force update the branch" err &&
 
 		test_must_fail git branch -D wt-$i 2>err &&
-		grep "Cannot delete branch" err || return 1
+		grep "cannot delete branch" err || return 1
 	done
 '
 
diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index 080e4f24a6..3182abde27 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -291,10 +291,10 @@ test_expect_success 'git branch -M topic topic should work when main is checked
 test_expect_success 'git branch -M and -C fail on detached HEAD' '
 	git checkout HEAD^{} &&
 	test_when_finished git checkout - &&
-	echo "fatal: cannot rename the current branch while not on any." >expect &&
+	echo "fatal: cannot rename the current branch while not on any" >expect &&
 	test_must_fail git branch -M must-fail 2>err &&
 	test_cmp expect err &&
-	echo "fatal: cannot copy the current branch while not on any." >expect &&
+	echo "fatal: cannot copy the current branch while not on any" >expect &&
 	test_must_fail git branch -C must-fail 2>err &&
 	test_cmp expect err
 '
@@ -943,7 +943,7 @@ test_expect_success 'deleting currently checked out branch fails' '
 	git worktree add -b my7 my7 &&
 	test_must_fail git -C my7 branch -d my7 &&
 	test_must_fail git branch -d my7 2>actual &&
-	grep "^error: Cannot delete branch .my7. used by worktree at " actual &&
+	grep "^error: cannot delete branch .my7. used by worktree at " actual &&
 	rm -r my7 &&
 	git worktree prune
 '
@@ -954,7 +954,7 @@ test_expect_success 'deleting in-use branch fails' '
 	git -C my7 bisect start HEAD HEAD~2 &&
 	test_must_fail git -C my7 branch -d my7 &&
 	test_must_fail git branch -d my7 2>actual &&
-	grep "^error: Cannot delete branch .my7. used by worktree at " actual &&
+	grep "^error: cannot delete branch .my7. used by worktree at " actual &&
 	rm -r my7 &&
 	git worktree prune
 '
@@ -1024,7 +1024,7 @@ test_expect_success '--set-upstream-to fails on multiple branches' '
 test_expect_success '--set-upstream-to fails on detached HEAD' '
 	git checkout HEAD^{} &&
 	test_when_finished git checkout - &&
-	echo "fatal: could not set upstream of HEAD to main when it does not point to any branch." >expect &&
+	echo "fatal: could not set upstream of HEAD to main when it does not point to any branch" >expect &&
 	test_must_fail git branch --set-upstream-to main 2>err &&
 	test_cmp expect err
 '
@@ -1072,7 +1072,7 @@ test_expect_success 'use --set-upstream-to modify a particular branch' '
 '
 
 test_expect_success '--unset-upstream should fail if given a non-existent branch' '
-	echo "fatal: Branch '"'"'i-dont-exist'"'"' has no upstream information" >expect &&
+	echo "fatal: branch '"'"'i-dont-exist'"'"' has no upstream information" >expect &&
 	test_must_fail git branch --unset-upstream i-dont-exist 2>err &&
 	test_cmp expect err
 '
@@ -1094,7 +1094,7 @@ test_expect_success 'test --unset-upstream on HEAD' '
 	test_must_fail git config branch.main.remote &&
 	test_must_fail git config branch.main.merge &&
 	# fail for a branch without upstream set
-	echo "fatal: Branch '"'"'main'"'"' has no upstream information" >expect &&
+	echo "fatal: branch '"'"'main'"'"' has no upstream information" >expect &&
 	test_must_fail git branch --unset-upstream 2>err &&
 	test_cmp expect err
 '
@@ -1108,7 +1108,7 @@ test_expect_success '--unset-upstream should fail on multiple branches' '
 test_expect_success '--unset-upstream should fail on detached HEAD' '
 	git checkout HEAD^{} &&
 	test_when_finished git checkout - &&
-	echo "fatal: could not unset upstream of HEAD when it does not point to any branch." >expect &&
+	echo "fatal: could not unset upstream of HEAD when it does not point to any branch" >expect &&
 	test_must_fail git branch --unset-upstream 2>err &&
 	test_cmp expect err
 '
diff --git a/t/t3202-show-branch.sh b/t/t3202-show-branch.sh
index b17f388f56..2cdb834b37 100755
--- a/t/t3202-show-branch.sh
+++ b/t/t3202-show-branch.sh
@@ -10,7 +10,7 @@ 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.
+	error: no commit on branch '\''$current'\'' yet
 	EOF
 	test_must_fail git branch --edit-description 2>actual &&
 	test_cmp expect actual &&
@@ -21,7 +21,7 @@ test_expect_success 'error descriptions on empty repository' '
 test_expect_success 'fatal descriptions on empty repository' '
 	current=$(git branch --show-current) &&
 	cat >expect <<-EOF &&
-	fatal: No commit on branch '\''$current'\'' yet.
+	fatal: no commit on branch '\''$current'\'' yet
 	EOF
 	test_must_fail git branch --set-upstream-to=non-existent 2>actual &&
 	test_cmp expect actual &&
@@ -224,7 +224,7 @@ done
 
 test_expect_success 'error descriptions on non-existent branch' '
 	cat >expect <<-EOF &&
-	error: No branch named '\''non-existent'\'.'
+	error: no branch named '\''non-existent'\''
 	EOF
 	test_must_fail git branch --edit-description non-existent 2>actual &&
 	test_cmp expect actual
@@ -238,7 +238,7 @@ test_expect_success 'fatal descriptions on non-existent branch' '
 	test_cmp expect actual &&
 
 	cat >expect <<-EOF &&
-	fatal: No branch named '\''non-existent'\''.
+	fatal: no branch named '\''non-existent'\''
 	EOF
 	test_must_fail git branch -c non-existent new-branch 2>actual &&
 	test_cmp expect actual &&
@@ -253,7 +253,7 @@ test_expect_success 'error descriptions on orphan branch' '
 	test_branch_op_in_wt() {
 		test_orphan_error() {
 			test_must_fail git $* 2>actual &&
-			test_i18ngrep "No commit on branch .orphan-branch. yet.$" actual
+			test_i18ngrep "no commit on branch .orphan-branch. yet$" actual
 		} &&
 		test_orphan_error -C wt branch $1 $2 &&                # implicit branch
 		test_orphan_error -C wt branch $1 orphan-branch $2 &&  # explicit branch
-- 
2.42.0.346.g24618a8a3e.dirty