[PATCH v3 06/19] fsck: Report the ID of the error/warning

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Some legacy code has objects with non-fatal fsck issues; To enable the
user to ignore those issues, let's print out the ID (e.g. when
encountering "missing-email", the user might want to call `git config
receive.fsck.warn missing-email`).

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 fsck.c          | 19 +++++++++++++++++++
 t/t1450-fsck.sh |  4 ++--
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/fsck.c b/fsck.c
index 02715ee..09f69fe 100644
--- a/fsck.c
+++ b/fsck.c
@@ -161,6 +161,23 @@ void fsck_set_severity(struct fsck_options *options, const char *mode)
 	}
 }
 
+static void append_msg_id(struct strbuf *sb, const char *msg_id)
+{
+	for (;;) {
+		char c = *(msg_id)++;
+
+		if (!c)
+			break;
+		if (c == '_')
+			c = '-';
+		else
+			c = tolower(c);
+		strbuf_addch(sb, c);
+	}
+
+	strbuf_addstr(sb, ": ");
+}
+
 __attribute__((format (printf, 4, 5)))
 static int report(struct fsck_options *options, struct object *object,
 	enum fsck_msg_id id, const char *fmt, ...)
@@ -169,6 +186,8 @@ static int report(struct fsck_options *options, struct object *object,
 	struct strbuf sb = STRBUF_INIT;
 	int msg_severity = fsck_msg_severity(id, options), result;
 
+	append_msg_id(&sb, msg_id_info[id].id_string);
+
 	va_start(ap, fmt);
 	strbuf_vaddf(&sb, fmt, ap);
 	result = options->error_func(object, msg_severity, sb.buf);
diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh
index cfb32b6..ea0f216 100755
--- a/t/t1450-fsck.sh
+++ b/t/t1450-fsck.sh
@@ -231,8 +231,8 @@ test_expect_success 'tag with incorrect tag name & missing tagger' '
 	git fsck --tags 2>out &&
 
 	cat >expect <<-EOF &&
-	warning in tag $tag: invalid '\''tag'\'' name: wrong name format
-	warning in tag $tag: invalid format - expected '\''tagger'\'' line
+	warning in tag $tag: invalid-tag-name: invalid '\''tag'\'' name: wrong name format
+	warning in tag $tag: missing-tagger-entry: invalid format - expected '\''tagger'\'' line
 	EOF
 	test_cmp expect out
 '
-- 
2.2.0.33.gc18b867



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