Auto merge of rust-lang#126597 - estebank:unicode-output, r=fmease

Add Unicode block-drawing compiler output support Add nightly-only theming support to rustc output using Unicode box drawing characters instead of ASCII-art to draw the terminal UI. In order to enable, the flags `-Zunstable-options=yes --error-format=human-unicode` must be passed in. After: ``` error: foo ╭▸ test.rs:3:3 │ 3 │ X0 Y0 Z0 │ ┌───╿──│──┘ │ ┌│───│──┘ │ ┏││━━━┙ │ ┃││ 4 │ ┃││ X1 Y1 Z1 5 │ ┃││ X2 Y2 Z2 │ ┃│└────╿──│──┘ `Z` label │ ┃└─────│──┤ │ ┗━━━━━━┥ `Y` is a good letter too │ `X` is a good letter ╰╴ note: bar ╭▸ test.rs:4:3 │ 4 │ ┏ X1 Y1 Z1 5 │ ┃ X2 Y2 Z2 6 │ ┃ X3 Y3 Z3 │ ┗━━━━━━━━━━┛ ├ note: bar ╰ note: baz note: qux ╭▸ test.rs:4:3 │ 4 │ X1 Y1 Z1 ╰╴ ━━━━━━━━ ``` Before: ``` error: foo --> test.rs:3:3 | 3 | X0 Y0 Z0 | ___^__-__- | |___|__| | ||___| | ||| 4 | ||| X1 Y1 Z1 5 | ||| X2 Y2 Z2 | |||____^__-__- `Z` label | ||_____|__| | |______| `Y` is a good letter too | `X` is a good letter | note: bar --> test.rs:4:3 | 4 | / X1 Y1 Z1 5 | | X2 Y2 Z2 6 | | X3 Y3 Z3 | |__________^ = note: bar = note: baz note: qux --> test.rs:4:3 | 4 | X1 Y1 Z1 | ^^^^^^^^ ``` After: ![rustc output with unicode box drawing characters](https://github.com/rust-lang/rust/assets/1606434/d210b79a-6579-4407-9706-ba8edc6e9f25) Before: ![current rustc output with ASCII art](https://github.com/rust-lang/rust/assets/1606434/5aecccf8-a6ee-4469-8b39-72fb0d979a9f)
flip1995 · Nov 11, 2024 · e2962cc · e2962cc
2 parents c21c781 + da93d78
commit e2962cc
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Showing 6 changed files with 28 additions and 28 deletions.
diff --git a/tests/ui/empty_line_after/doc_comments.stderr b/tests/ui/empty_line_after/doc_comments.stderr
@@ -3,7 +3,7 @@ error: empty line after doc comment
    |
 LL | / /// for the crate
 LL | |
-   | |_
+   | |_^
 LL |   fn first_in_crate() {}
    |   ------------------- the comment documents this function
    |
@@ -22,7 +22,7 @@ error: empty line after doc comment
    |
 LL | /     /// for the module
 LL | |
-   | |_
+   | |_^
 LL |       fn first_in_module() {}
    |       -------------------- the comment documents this function
    |
@@ -39,7 +39,7 @@ error: empty line after doc comment
    |
 LL | /     /// # Indented
 LL | |
-   | |_
+   | |_^
 LL |       /// Blank line
 LL |       fn indented() {}
    |       ------------- the comment documents this function
@@ -55,7 +55,7 @@ error: empty line after doc comment
    |
 LL | / /// This should produce a warning
 LL | |
-   | |_
+   | |_^
 LL |   fn with_doc_and_newline() {}
    |   ------------------------- the comment documents this function
    |
@@ -69,7 +69,7 @@ LL | |
 LL | | /** This is also a doc comment and is part of the warning
 LL | |  */
 LL | |
-   | |_
+   | |_^
 ...
 LL |   fn three_attributes() {}
    |   --------------------- the comment documents this function
@@ -82,7 +82,7 @@ error: empty line after doc comment
 LL | /     /// docs for `old_code`
 LL | |     // fn old_code() {}
 LL | |
-   | |_
+   | |_^
 LL |       fn new_code() {}
    |       ------------- the comment documents this function
    |
@@ -102,7 +102,7 @@ LL | |     /// Docs
 LL | |     /// for OldB
 LL | |     // struct OldB;
 LL | |
-   | |_
+   | |_^
 ...
 LL |       struct Multiple;
    |       --------------- the comment documents this struct
@@ -125,7 +125,7 @@ LL | /     /**
 LL | |      * Meant to be inner doc comment
 LL | |      */
 LL | |
-   | |_
+   | |_^
 LL |       fn first_in_module() {}
    |       -------------------- the comment documents this function
    |
@@ -143,7 +143,7 @@ LL | |      * Docs for `old_code`
 LL | |      */
 LL | |     /* fn old_code() {} */
 LL | |
-   | |_
+   | |_^
 ...
 LL |       fn new_code() {}
    |       ------------- the comment documents this function
@@ -161,7 +161,7 @@ error: empty line after doc comment
 LL | /     /// Docs for `old_code2`
 LL | |     /* fn old_code2() {} */
 LL | |
-   | |_
+   | |_^
 LL |       /// Docs for `new_code2`
 LL |       fn new_code2() {}
    |       -------------- the comment documents this function

diff --git a/tests/ui/empty_line_after/outer_attribute.stderr b/tests/ui/empty_line_after/outer_attribute.stderr
@@ -3,7 +3,7 @@ error: empty line after outer attribute
    |
 LL | / #[crate_type = "lib"]
 LL | |
-   | |_
+   | |_^
 LL |   fn first_in_crate() {}
    |   ------------------- the attribute applies to this function
    |
@@ -20,7 +20,7 @@ error: empty line after outer attribute
    |
 LL | / #[inline]
 LL | |
-   | |_
+   | |_^
 LL |   /// some comment
 LL |   fn with_one_newline_and_comment() {}
    |   --------------------------------- the attribute applies to this function
@@ -32,7 +32,7 @@ error: empty line after outer attribute
    |
 LL | / #[inline]
 LL | |
-   | |_
+   | |_^
 LL |   fn with_one_newline() {}
    |   --------------------- the attribute applies to this function
    |
@@ -44,7 +44,7 @@ error: empty lines after outer attribute
 LL | /     #[crate_type = "lib"]
 LL | |
 LL | |
-   | |_
+   | |_^
 LL |       fn with_two_newlines() {}
    |       ---------------------- the attribute applies to this function
    |
@@ -59,7 +59,7 @@ error: empty line after outer attribute
    |
 LL | / #[doc = "doc attributes should be considered attributes"]
 LL | |
-   | |_
+   | |_^
 LL |   enum Baz {
    |   -------- the attribute applies to this enum
    |
@@ -70,7 +70,7 @@ error: empty line after outer attribute
    |
 LL | / #[repr(C)]
 LL | |
-   | |_
+   | |_^
 LL |   struct Foo {
    |   ---------- the attribute applies to this struct
    |
@@ -81,7 +81,7 @@ error: empty line after outer attribute
    |
 LL | / #[allow(dead_code)]
 LL | |
-   | |_
+   | |_^
 LL |   mod foo {}
    |   ------- the attribute applies to this module
    |
@@ -93,7 +93,7 @@ error: empty line after outer attribute
 LL | / #[inline]
 LL | | // Still lint cases where the empty line does not immediately follow the attribute
 LL | |
-   | |_
+   | |_^
 LL |   fn comment_before_empty_line() {}
    |   ------------------------------ the attribute applies to this function
    |
@@ -106,7 +106,7 @@ LL | / #[allow(unused)]
 LL | |
 LL | | // This comment is isolated
 LL | |
-   | |_
+   | |_^
 LL |   pub fn isolated_comment() {}
    |   ------------------------- the attribute applies to this function
    |

diff --git a/tests/ui/four_forward_slashes.stderr b/tests/ui/four_forward_slashes.stderr
@@ -3,7 +3,7 @@ error: this item has comments with 4 forward slashes (`////`). These look like d
    |
 LL | / //// whoops
 LL | | fn a() {}
-   | |_
+   | |_^
    |
    = note: `-D clippy::four-forward-slashes` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::four_forward_slashes)]`
@@ -18,7 +18,7 @@ error: this item has comments with 4 forward slashes (`////`). These look like d
 LL | / //// whoops
 LL | | #[allow(dead_code)]
 LL | | fn b() {}
-   | |_
+   | |_^
    |
 help: make this a doc comment by removing one `/`
    |
@@ -32,7 +32,7 @@ LL | / //// whoops
 LL | | //// two borked comments!
 LL | | #[track_caller]
 LL | | fn c() {}
-   | |_
+   | |_^
    |
 help: turn these into doc comments by removing one `/`
    |
@@ -46,7 +46,7 @@ error: this item has comments with 4 forward slashes (`////`). These look like d
 LL | / //// between attributes
 LL | | #[allow(dead_code)]
 LL | | fn g() {}
-   | |_
+   | |_^
    |
 help: make this a doc comment by removing one `/`
    |
@@ -58,7 +58,7 @@ error: this item has comments with 4 forward slashes (`////`). These look like d
    |
 LL | /     //// not very start of contents
 LL | | fn h() {}
-   | |_
+   | |_^
    |
 help: make this a doc comment by removing one `/`
    |

diff --git a/tests/ui/four_forward_slashes_first_line.stderr b/tests/ui/four_forward_slashes_first_line.stderr
@@ -3,7 +3,7 @@ error: this item has comments with 4 forward slashes (`////`). These look like d
    |
 LL | / //// borked doc comment on the first line. doesn't combust!
 LL | | fn a() {}
-   | |_
+   | |_^
    |
    = note: `-D clippy::four-forward-slashes` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::four_forward_slashes)]`

diff --git a/tests/ui/too_long_first_doc_paragraph-fix.stderr b/tests/ui/too_long_first_doc_paragraph-fix.stderr
@@ -6,7 +6,7 @@ LL | | /// A much longer explanation that goes into a lot more detail about
 LL | | /// how the thing works, possibly with doclinks and so one,
 LL | | /// and probably spanning a many rows. Blablabla, it needs to be over
 LL | | /// 200 characters so I needed to write something longeeeeeeer.
-   | |_
+   | |_^
    |
    = note: `-D clippy::too-long-first-doc-paragraph` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::too_long_first_doc_paragraph)]`

diff --git a/tests/ui/too_long_first_doc_paragraph.stderr b/tests/ui/too_long_first_doc_paragraph.stderr
@@ -23,7 +23,7 @@ error: first doc comment paragraph is too long
 LL | / /// Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc turpis nunc, lacinia
 LL | | /// a dolor in, pellentesque aliquet enim. Cras nec maximus sem. Mauris arcu libero,
 LL | | /// gravida non lacinia at, rhoncus eu lacus.
-   | |_
+   | |_^
 
 error: first doc comment paragraph is too long
   --> tests/ui/too_long_first_doc_paragraph.rs:36:1
@@ -32,7 +32,7 @@ LL | / /// Lorem
 LL | | /// ipsum dolor sit amet, consectetur adipiscing elit. Nunc turpis nunc, lacinia
 LL | | /// a dolor in, pellentesque aliquet enim. Cras nec maximus sem. Mauris arcu libero,
 LL | | /// gravida non lacinia at, rhoncus eu lacus.
-   | |_
+   | |_^
 
 error: aborting due to 3 previous errors