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-rw-r--r--compiler/rustc_errors/src/emitter.rs21
-rw-r--r--compiler/rustc_span/src/lib.rs3
-rw-r--r--tests/ui/parser/unicode-control-codepoints.stderr98
3 files changed, 62 insertions, 60 deletions
diff --git a/compiler/rustc_errors/src/emitter.rs b/compiler/rustc_errors/src/emitter.rs
index 16fa0ff7a2d..58220c65490 100644
--- a/compiler/rustc_errors/src/emitter.rs
+++ b/compiler/rustc_errors/src/emitter.rs
@@ -2558,18 +2558,19 @@ fn num_decimal_digits(num: usize) -> usize {
 }
 
 // We replace some characters so the CLI output is always consistent and underlines aligned.
+// Keep the following list in sync with `rustc_span::char_width`.
 const OUTPUT_REPLACEMENTS: &[(char, &str)] = &[
-    ('\t', "    "),   // We do our own tab replacement
+    ('\t', "    "),    // We do our own tab replacement
     ('\u{200D}', ""), // Replace ZWJ with nothing for consistent terminal output of grapheme clusters.
-    ('\u{202A}', ""), // The following unicode text flow control characters are inconsistently
-    ('\u{202B}', ""), // supported across CLIs and can cause confusion due to the bytes on disk
-    ('\u{202D}', ""), // not corresponding to the visible source code, so we replace them always.
-    ('\u{202E}', ""),
-    ('\u{2066}', ""),
-    ('\u{2067}', ""),
-    ('\u{2068}', ""),
-    ('\u{202C}', ""),
-    ('\u{2069}', ""),
+    ('\u{202A}', "�"), // The following unicode text flow control characters are inconsistently
+    ('\u{202B}', "�"), // supported across CLIs and can cause confusion due to the bytes on disk
+    ('\u{202D}', "�"), // not corresponding to the visible source code, so we replace them always.
+    ('\u{202E}', "�"),
+    ('\u{2066}', "�"),
+    ('\u{2067}', "�"),
+    ('\u{2068}', "�"),
+    ('\u{202C}', "�"),
+    ('\u{2069}', "�"),
     // In terminals without Unicode support the following will be garbled, but in *all* terminals
     // the underlying codepoint will be as well. We could gate this replacement behind a "unicode
     // support" gate.
diff --git a/compiler/rustc_span/src/lib.rs b/compiler/rustc_span/src/lib.rs
index ea57c1ce818..7c8ac3be4be 100644
--- a/compiler/rustc_span/src/lib.rs
+++ b/compiler/rustc_span/src/lib.rs
@@ -2093,7 +2093,8 @@ pub fn char_width(ch: char) -> usize {
         | '\u{000E}' | '\u{000F}' | '\u{0010}' | '\u{0011}' | '\u{0012}' | '\u{0013}'
         | '\u{0014}' | '\u{0015}' | '\u{0016}' | '\u{0017}' | '\u{0018}' | '\u{0019}'
         | '\u{001A}' | '\u{001B}' | '\u{001C}' | '\u{001D}' | '\u{001E}' | '\u{001F}'
-        | '\u{007F}' => 1,
+        | '\u{007F}' | '\u{202A}' | '\u{202B}' | '\u{202D}' | '\u{202E}' | '\u{2066}'
+        | '\u{2067}' | '\u{2068}' | '\u{202C}' | '\u{2069}' => 1,
         _ => unicode_width::UnicodeWidthChar::width(ch).unwrap_or(1),
     }
 }
diff --git a/tests/ui/parser/unicode-control-codepoints.stderr b/tests/ui/parser/unicode-control-codepoints.stderr
index fc071a94191..28de4ae72ab 100644
--- a/tests/ui/parser/unicode-control-codepoints.stderr
+++ b/tests/ui/parser/unicode-control-codepoints.stderr
@@ -17,78 +17,78 @@ LL |     println!("{:?}", b"us\u{202B}e\u{202A}r");
 error: non-ASCII character in byte string literal
   --> $DIR/unicode-control-codepoints.rs:16:26
    |
-LL |     println!("{:?}", b"/* } if isAdmin  begin admins only ");
+LL |     println!("{:?}", b"/*� } �if isAdmin� � begin admins only ");
    |                          ^ must be ASCII but is '\u{202e}'
    |
 help: if you meant to use the UTF-8 encoding of '\u{202e}', use \xHH escapes
    |
-LL |     println!("{:?}", b"/*\xE2\x80\xAE } if isAdmin  begin admins only ");
+LL |     println!("{:?}", b"/*\xE2\x80\xAE } �if isAdmin� � begin admins only ");
    |                          ~~~~~~~~~~~~
 
 error: non-ASCII character in byte string literal
   --> $DIR/unicode-control-codepoints.rs:16:30
    |
-LL |     println!("{:?}", b"/* } if isAdmin  begin admins only ");
-   |                             ^ must be ASCII but is '\u{2066}'
+LL |     println!("{:?}", b"/*� } �if isAdmin� � begin admins only ");
+   |                              ^ must be ASCII but is '\u{2066}'
    |
 help: if you meant to use the UTF-8 encoding of '\u{2066}', use \xHH escapes
    |
-LL |     println!("{:?}", b"/* } \xE2\x81\xA6if isAdmin  begin admins only ");
-   |                             ~~~~~~~~~~~~
+LL |     println!("{:?}", b"/*� } \xE2\x81\xA6if isAdmin� � begin admins only ");
+   |                              ~~~~~~~~~~~~
 
 error: non-ASCII character in byte string literal
   --> $DIR/unicode-control-codepoints.rs:16:41
    |
-LL |     println!("{:?}", b"/* } if isAdmin  begin admins only ");
-   |                                       ^ must be ASCII but is '\u{2069}'
+LL |     println!("{:?}", b"/*� } �if isAdmin� � begin admins only ");
+   |                                         ^ must be ASCII but is '\u{2069}'
    |
 help: if you meant to use the UTF-8 encoding of '\u{2069}', use \xHH escapes
    |
-LL |     println!("{:?}", b"/* } if isAdmin\xE2\x81\xA9  begin admins only ");
-   |                                       ~~~~~~~~~~~~
+LL |     println!("{:?}", b"/*� } �if isAdmin\xE2\x81\xA9 � begin admins only ");
+   |                                         ~~~~~~~~~~~~
 
 error: non-ASCII character in byte string literal
   --> $DIR/unicode-control-codepoints.rs:16:43
    |
-LL |     println!("{:?}", b"/* } if isAdmin  begin admins only ");
-   |                                        ^ must be ASCII but is '\u{2066}'
+LL |     println!("{:?}", b"/*� } �if isAdmin� � begin admins only ");
+   |                                           ^ must be ASCII but is '\u{2066}'
    |
 help: if you meant to use the UTF-8 encoding of '\u{2066}', use \xHH escapes
    |
-LL |     println!("{:?}", b"/* } if isAdmin \xE2\x81\xA6 begin admins only ");
-   |                                        ~~~~~~~~~~~~
+LL |     println!("{:?}", b"/*� } �if isAdmin� \xE2\x81\xA6 begin admins only ");
+   |                                           ~~~~~~~~~~~~
 
 error: non-ASCII character in raw byte string literal
   --> $DIR/unicode-control-codepoints.rs:21:29
    |
-LL |     println!("{:?}", br##"/* } if isAdmin  begin admins only "##);
+LL |     println!("{:?}", br##"/*� } �if isAdmin� � begin admins only "##);
    |                             ^ must be ASCII but is '\u{202e}'
 
 error: non-ASCII character in raw byte string literal
   --> $DIR/unicode-control-codepoints.rs:21:33
    |
-LL |     println!("{:?}", br##"/* } if isAdmin  begin admins only "##);
-   |                                ^ must be ASCII but is '\u{2066}'
+LL |     println!("{:?}", br##"/*� } �if isAdmin� � begin admins only "##);
+   |                                 ^ must be ASCII but is '\u{2066}'
 
 error: non-ASCII character in raw byte string literal
   --> $DIR/unicode-control-codepoints.rs:21:44
    |
-LL |     println!("{:?}", br##"/* } if isAdmin  begin admins only "##);
-   |                                          ^ must be ASCII but is '\u{2069}'
+LL |     println!("{:?}", br##"/*� } �if isAdmin� � begin admins only "##);
+   |                                            ^ must be ASCII but is '\u{2069}'
 
 error: non-ASCII character in raw byte string literal
   --> $DIR/unicode-control-codepoints.rs:21:46
    |
-LL |     println!("{:?}", br##"/* } if isAdmin  begin admins only "##);
-   |                                           ^ must be ASCII but is '\u{2066}'
+LL |     println!("{:?}", br##"/*� } �if isAdmin� � begin admins only "##);
+   |                                              ^ must be ASCII but is '\u{2066}'
 
 error: unicode codepoint changing visible direction of text present in comment
   --> $DIR/unicode-control-codepoints.rs:2:5
    |
-LL |     // if access_level != "user" { // Check if admin
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^--^^^^^^^^^^^^^^^^^^^^^
-   |     |                        ||
-   |     |                        |'\u{202a}'
+LL |     // if access_level != "us�e�r" { // Check if admin
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^-^-^^^^^^^^^^^^^^^^^^^^^^
+   |     |                        | |
+   |     |                        | '\u{202a}'
    |     |                        '\u{202b}'
    |     this comment contains invisible unicode text flow control codepoints
    |
@@ -99,12 +99,12 @@ LL |     // if access_level != "user" { // Check if admin
 error: unicode codepoint changing visible direction of text present in comment
   --> $DIR/unicode-control-codepoints.rs:30:1
    |
-LL | //"/* } if isAdmin  begin admins only */"
-   | ^^^^^-^^-^^^^^^^^^--^^^^^^^^^^^^^^^^^^^^^
-   | |    |  |         ||
-   | |    |  |         |'\u{2066}'
-   | |    |  |         '\u{2069}'
-   | |    |  '\u{2066}'
+LL | //"/*� } �if isAdmin� � begin admins only */"
+   | ^^^^^-^^^-^^^^^^^^^^-^-^^^^^^^^^^^^^^^^^^^^^^
+   | |    |   |          | |
+   | |    |   |          | '\u{2066}'
+   | |    |   |          '\u{2069}'
+   | |    |   '\u{2066}'
    | |    '\u{202e}'
    | this comment contains invisible unicode text flow control codepoints
    |
@@ -114,12 +114,12 @@ LL | //"/* } if isAdmin  begin admins only */"
 error: unicode codepoint changing visible direction of text present in literal
   --> $DIR/unicode-control-codepoints.rs:11:22
    |
-LL |     println!("{:?}", "/* } if isAdmin  begin admins only ");
-   |                      ^^^-^^-^^^^^^^^^--^^^^^^^^^^^^^^^^^^^
-   |                      |  |  |         ||
-   |                      |  |  |         |'\u{2066}'
-   |                      |  |  |         '\u{2069}'
-   |                      |  |  '\u{2066}'
+LL |     println!("{:?}", "/*� } �if isAdmin� � begin admins only ");
+   |                      ^^^-^^^-^^^^^^^^^^-^-^^^^^^^^^^^^^^^^^^^^
+   |                      |  |   |          | |
+   |                      |  |   |          | '\u{2066}'
+   |                      |  |   |          '\u{2069}'
+   |                      |  |   '\u{2066}'
    |                      |  '\u{202e}'
    |                      this literal contains invisible unicode text flow control codepoints
    |
@@ -134,12 +134,12 @@ LL |     println!("{:?}", "/*\u{202e} } \u{2066}if isAdmin\u{2069} \u{2066} begi
 error: unicode codepoint changing visible direction of text present in literal
   --> $DIR/unicode-control-codepoints.rs:14:22
    |
-LL |     println!("{:?}", r##"/* } if isAdmin  begin admins only "##);
-   |                      ^^^^^^-^^-^^^^^^^^^--^^^^^^^^^^^^^^^^^^^^^
-   |                      |     |  |         ||
-   |                      |     |  |         |'\u{2066}'
-   |                      |     |  |         '\u{2069}'
-   |                      |     |  '\u{2066}'
+LL |     println!("{:?}", r##"/*� } �if isAdmin� � begin admins only "##);
+   |                      ^^^^^^-^^^-^^^^^^^^^^-^-^^^^^^^^^^^^^^^^^^^^^^
+   |                      |     |   |          | |
+   |                      |     |   |          | '\u{2066}'
+   |                      |     |   |          '\u{2069}'
+   |                      |     |   '\u{2066}'
    |                      |     '\u{202e}'
    |                      this literal contains invisible unicode text flow control codepoints
    |
@@ -153,8 +153,8 @@ LL |     println!("{:?}", r##"/*\u{202e} } \u{2066}if isAdmin\u{2069} \u{2066} b
 error: unicode codepoint changing visible direction of text present in literal
   --> $DIR/unicode-control-codepoints.rs:26:22
    |
-LL |     println!("{:?}", '');
-   |                      ^-
+LL |     println!("{:?}", '�');
+   |                      ^-^
    |                      ||
    |                      |'\u{202e}'
    |                      this literal contains an invisible unicode text flow control codepoint
@@ -169,8 +169,8 @@ LL |     println!("{:?}", '\u{202e}');
 error: unicode codepoint changing visible direction of text present in doc comment
   --> $DIR/unicode-control-codepoints.rs:33:1
    |
-LL | /**  ''); */fn foo() {}
-   | ^^^^^^^^^^^^ this doc comment contains an invisible unicode text flow control codepoint
+LL | /**  '�'); */fn foo() {}
+   | ^^^^^^^^^^^^^ this doc comment contains an invisible unicode text flow control codepoint
    |
    = note: these kind of unicode codepoints change the way text flows on applications that support them, but can cause confusion because they change the order of characters on the screen
    = note: if their presence wasn't intentional, you can remove them
@@ -181,8 +181,8 @@ error: unicode codepoint changing visible direction of text present in doc comme
    |
 LL | / /**
 LL | |  *
-LL | |  *  ''); */fn bar() {}
-   | |___________^ this doc comment contains an invisible unicode text flow control codepoint
+LL | |  *  '�'); */fn bar() {}
+   | |____________^ this doc comment contains an invisible unicode text flow control codepoint
    |
    = note: these kind of unicode codepoints change the way text flows on applications that support them, but can cause confusion because they change the order of characters on the screen
    = note: if their presence wasn't intentional, you can remove them