[PATCH 4/7] builtin/bugreport.c: add directory to archiver more gently

["Victoria Dye via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Victoria Dye <vdye@xxxxxxxxxx>

If a directory added to the '--diagnose' archiver does not exist, warn and
return 0 from 'add_directory_to_archiver()' rather than failing with a fatal
error. This handles a failure edge case where the '.git/logs' has not yet
been created when running 'git bugreport --diagnose', but extends to any
situation where a directory may be missing in the '.git' dir.

Now, when a directory is missing a warning is captured in the diagnostic
logs. This provides a user with more complete information than if 'git
bugreport' simply failed with an error.

Signed-off-by: Victoria Dye <vdye@xxxxxxxxxx>
---
 builtin/bugreport.c  |  8 +++++++-
 t/t0091-bugreport.sh | 11 ++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/builtin/bugreport.c b/builtin/bugreport.c
index 720889a37ad..dea11f91386 100644
--- a/builtin/bugreport.c
+++ b/builtin/bugreport.c
@@ -176,12 +176,18 @@ static int add_directory_to_archiver(struct strvec *archiver_args,
 				     const char *path, int recurse)
 {
 	int at_root = !*path;
-	DIR *dir = opendir(at_root ? "." : path);
+	DIR *dir;
 	struct dirent *e;
 	struct strbuf buf = STRBUF_INIT;
 	size_t len;
 	int res = 0;
 
+	if (!file_exists(at_root ? "." : path)) {
+		warning(_("directory '%s' does not exist, will not be archived"), path);
+		return 0;
+	}
+
+	dir = opendir(at_root ? "." : path);
 	if (!dir)
 		return error_errno(_("could not open directory '%s'"), path);
 
diff --git a/t/t0091-bugreport.sh b/t/t0091-bugreport.sh
index 3cf983aa67f..e9db89ef2c8 100755
--- a/t/t0091-bugreport.sh
+++ b/t/t0091-bugreport.sh
@@ -78,7 +78,7 @@ test_expect_success 'indicates populated hooks' '
 	test_cmp expect actual
 '
 
-test_expect_failure UNZIP '--diagnose creates diagnostics zip archive' '
+test_expect_success UNZIP '--diagnose creates diagnostics zip archive' '
 	test_when_finished rm -rf report &&
 
 	git bugreport --diagnose -o report -s test >out &&
@@ -98,4 +98,13 @@ test_expect_failure UNZIP '--diagnose creates diagnostics zip archive' '
 	grep "^Total: [0-9][0-9]*" out
 '
 
+test_expect_success '--diagnose warns when archived dir does not exist' '
+	test_when_finished rm -rf report &&
+
+	# Remove logs - not guaranteed to exist
+	rm -rf .git/logs &&
+	git bugreport --diagnose -o report -s test 2>err &&
+	grep "directory .\.git/logs. does not exist, will not be archived" err
+'
+
 test_done
-- 
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