Fix duplicate options error

The UI isn't glitching anymore.

Author: camelid

src/librustc_builtin_macros/asm.rs

@@ -292,20 +292,23 @@ fn err_duplicate_option<'a>(p: &mut Parser<'a>, symbol: Symbol, span: Span) {
         .sess
         .span_diagnostic
         .struct_span_err(span, &format!("the `{}` option was already provided", symbol));
-    err.span_suggestion(
+    err.span_label(
         span,
+        "this option was already provided",
+    );
+
+    // Tool-only output
+    let mut full_span = span;
+    if p.token.kind == token::Comma {
+        full_span = full_span.to(p.token.span);
+    }
+    err.tool_only_span_suggestion(
+        full_span,
         "remove this option",
         String::new(),
         Applicability::MachineApplicable,
     );
-    if p.token.kind == token::Comma {
-        err.tool_only_span_suggestion(
-            p.token.span,
-            "remove this comma",
-            String::new(),
-            Applicability::MachineApplicable,
-        );
-    }
+
     err.emit();
 }
 

src/test/ui/asm/duplicate-options.stderr

@@ -2,55 +2,55 @@ error: the `nomem` option was already provided
   --> $DIR/duplicate-options.rs:8:33
    |
 LL |         asm!("", options(nomem, nomem));
-   |                                 ^^^^^ help: remove this option
+   |                                 ^^^^^ this option was already provided
 
 error: the `att_syntax` option was already provided
   --> $DIR/duplicate-options.rs:10:38
    |
 LL |         asm!("", options(att_syntax, att_syntax));
-   |                                      ^^^^^^^^^^ help: remove this option
+   |                                      ^^^^^^^^^^ this option was already provided
 
 error: the `nostack` option was already provided
   --> $DIR/duplicate-options.rs:12:56
    |
 LL |         asm!("", options(nostack, att_syntax), options(nostack));
-   |                                                        ^^^^^^^ help: remove this option
+   |                                                        ^^^^^^^ this option was already provided
 
 error: the `nostack` option was already provided
   --> $DIR/duplicate-options.rs:14:35
    |
 LL |         asm!("", options(nostack, nostack), options(nostack), options(nostack));
-   |                                   ^^^^^^^ help: remove this option
+   |                                   ^^^^^^^ this option was already provided
 
 error: the `nostack` option was already provided
   --> $DIR/duplicate-options.rs:14:53
    |
 LL |         asm!("", options(nostack, nostack), options(nostack), options(nostack));
-   |                                                     ^^^^^^^ help: remove this option
+   |                                                     ^^^^^^^ this option was already provided
 
 error: the `nostack` option was already provided
   --> $DIR/duplicate-options.rs:14:71
    |
 LL |         asm!("", options(nostack, nostack), options(nostack), options(nostack));
-   |                                                                       ^^^^^^^ help: remove this option
+   |                                                                       ^^^^^^^ this option was already provided
 
 error: the `noreturn` option was already provided
   --> $DIR/duplicate-options.rs:21:33
    |
 LL |             options(att_syntax, noreturn),
-   |                                 ^^^^^^^^ help: remove this option
+   |                                 ^^^^^^^^ this option was already provided
 
 error: the `nomem` option was already provided
   --> $DIR/duplicate-options.rs:22:21
    |
 LL |             options(nomem, nostack),
-   |                     ^^^^^^ help: remove this option
+   |                     ^^^^^ this option was already provided
 
 error: the `noreturn` option was already provided
   --> $DIR/duplicate-options.rs:23:21
    |
 LL |             options(noreturn),
-   |                     ^^^^^^^^ help: remove this option
+   |                     ^^^^^^^^ this option was already provided
 
 error: aborting due to 9 previous errors