diff options
| -rw-r--r-- | compiler/rustc_driver/src/lib.rs | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/compiler/rustc_driver/src/lib.rs b/compiler/rustc_driver/src/lib.rs index b943977e4c2..87bc829b488 100644 --- a/compiler/rustc_driver/src/lib.rs +++ b/compiler/rustc_driver/src/lib.rs @@ -528,8 +528,12 @@ fn stderr_isatty() -> bool { } fn handle_explain(registry: Registry, code: &str, output: ErrorOutputType) { - let normalised = - if code.starts_with('E') { code.to_string() } else { format!("E{0:0>4}", code) }; + let upper_cased_code = code.to_ascii_uppercase(); + let normalised = if upper_cased_code.starts_with('E') { + upper_cased_code + } else { + format!("E{0:0>4}", code) + }; match registry.try_find_description(&normalised) { Ok(Some(description)) => { let mut is_in_code_block = false; |