From f815858420980bc4f9119731647a0fae9e7978c7 Mon Sep 17 00:00:00 2001
From: Seiichi Uchida <seuchida@gmail.com>
Date: Sun, 4 Feb 2018 17:21:10 +0900
Subject: [PATCH] Use correct offset when unindenting code block

When using hard tabs, we should only remove '\t'.
---
 src/lib.rs                 | 7 ++++++-
 tests/target/issue-2401.rs | 7 +++++++
 2 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 tests/target/issue-2401.rs

diff --git a/src/lib.rs b/src/lib.rs
index 773567e5f88b..2b89bde72c16 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -571,7 +571,12 @@ pub fn format_code_block(code_snippet: &str, config: &Config) -> Option<String>
                     let indent_str =
                         Indent::from_width(config, config.tab_spaces()).to_string(config);
                     if line.starts_with(indent_str.as_ref()) {
-                        &line[config.tab_spaces()..]
+                        let offset = if config.hard_tabs() {
+                            1
+                        } else {
+                            config.tab_spaces()
+                        };
+                        &line[offset..]
                     } else {
                         line
                     }
diff --git a/tests/target/issue-2401.rs b/tests/target/issue-2401.rs
new file mode 100644
index 000000000000..ec8f27b732ff
--- /dev/null
+++ b/tests/target/issue-2401.rs
@@ -0,0 +1,7 @@
+// rustfmt-hard_tabs = true
+// rustfmt-normalize_comments = true
+
+/// ```
+/// println!("Hello, World!");
+/// ```
+fn main() {}