From b972455ac77e34e8da72cc7f8aa8857baa5721cb Mon Sep 17 00:00:00 2001
From: Andrew Gallant <andrew@astral.sh>
Date: Tue, 12 Dec 2023 09:58:07 -0500
Subject: [PATCH] ruff_python_formatter: implement "dynamic" line width mode
 for docstring code formatting (#9098)

## Summary

This PR changes the internal `docstring-code-line-width` setting to
additionally accept a string value `dynamic`. When `dynamic` is set, the
line width is dynamically adjusted when reformatting code snippets in
docstrings based on the indent level of the docstring. The result is
that the reformatted lines from the code snippet should not exceed the
"global" line width configuration for the surrounding source.

This PR does not change the default behavior, although I suspect the
default should probably be `dynamic`.

## Test Plan

I added a new configuration to the existing docstring code tests and
also added a new set of tests dedicated to the new `dynamic` mode.
---
 .../ruff/docstring_code_examples.options.json |    6 +
 ...e_examples_dynamic_line_width.options.json |   26 +
 ...string_code_examples_dynamic_line_width.py |  172 ++
 crates/ruff_python_formatter/src/context.rs   |  124 +-
 .../src/expression/string/docstring.rs        |   17 +-
 crates/ruff_python_formatter/src/lib.rs       |    3 +-
 crates/ruff_python_formatter/src/options.rs   |   54 +-
 .../src/statement/suite.rs                    |    5 +-
 .../ruff_python_formatter/tests/fixtures.rs   |    2 +-
 .../format@docstring_code_examples.py.snap    | 1367 ++++++++++++++
 ...g_code_examples_dynamic_line_width.py.snap | 1630 +++++++++++++++++
 11 files changed, 3394 insertions(+), 12 deletions(-)
 create mode 100644 crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_dynamic_line_width.options.json
 create mode 100644 crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_dynamic_line_width.py
 create mode 100644 crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples_dynamic_line_width.py.snap

diff --git a/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples.options.json b/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples.options.json
index 75eee27329dfe..9400ae4bea230 100644
--- a/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples.options.json
+++ b/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples.options.json
@@ -44,5 +44,11 @@
     "docstring_code_line_width": 60,
     "indent_style": "space",
     "indent_width": 4
+  },
+  {
+    "docstring_code": "enabled",
+    "docstring_code_line_width": "dynamic",
+    "indent_style": "space",
+    "indent_width": 4
   }
 ]
diff --git a/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_dynamic_line_width.options.json b/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_dynamic_line_width.options.json
new file mode 100644
index 0000000000000..3367effa0051c
--- /dev/null
+++ b/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_dynamic_line_width.options.json
@@ -0,0 +1,26 @@
+[
+  {
+    "docstring_code": "enabled",
+    "docstring_code_line_width": "dynamic",
+    "indent_style": "space",
+    "indent_width": 4
+  },
+  {
+    "docstring_code": "enabled",
+    "docstring_code_line_width": "dynamic",
+    "indent_style": "space",
+    "indent_width": 2
+  },
+  {
+    "docstring_code": "enabled",
+    "docstring_code_line_width": "dynamic",
+    "indent_style": "tab",
+    "indent_width": 4
+  },
+  {
+    "docstring_code": "enabled",
+    "docstring_code_line_width": "dynamic",
+    "indent_style": "tab",
+    "indent_width": 8
+  }
+]
diff --git a/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_dynamic_line_width.py b/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_dynamic_line_width.py
new file mode 100644
index 0000000000000..04027909eda6e
--- /dev/null
+++ b/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_dynamic_line_width.py
@@ -0,0 +1,172 @@
+def simple():
+    """
+    First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Like simple, but we double everything up to ensure the indent level is
+# tracked correctly.
+def repeated():
+    """
+    First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+
+    class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Like simple, but we make one line exactly one character longer than the limit
+# (for 4-space indents) and make sure it gets wrapped.
+def barely_exceeds_limit():
+    """
+    First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is 89 columns, which is one
+                # more than the limit. Therefore, it should get wrapped for
+                # indent_width >= 4.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678)
+                return 5
+            self.x = doit( 5 )
+    ```
+
+    Done.
+    """
+    pass
+
+
+# This tests that if the code block is unindented, that it gets indented and
+# the dynamic line width setting is applied correctly.
+def unindented():
+    """
+    First line.
+
+```py
+class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+    def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+        def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            # For 4 space indents, this is just one character shy of
+            # tripping the default line width of 88. So it should not be
+            # wrapped.
+            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+            return 5
+        self.x = doit( 5 )
+```
+
+    Done.
+    """
+    pass
+
+
+# Like unindented, but contains a `print` line where it just barely exceeds the
+# globally configured line width *after* its indentation has been corrected.
+def unindented_barely_exceeds_limit():
+    """
+    First line.
+
+```py
+class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+    def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+        def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            # For 4 space indents, this is 89 columns, which is one
+            # more than the limit. Therefore, it should get wrapped for
+            # indent_width >= 4.
+            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678)
+            return 5
+        self.x = doit( 5 )
+```
+
+    Done.
+    """
+    pass
diff --git a/crates/ruff_python_formatter/src/context.rs b/crates/ruff_python_formatter/src/context.rs
index ac5dea3710017..8407e7cdc4323 100644
--- a/crates/ruff_python_formatter/src/context.rs
+++ b/crates/ruff_python_formatter/src/context.rs
@@ -1,7 +1,7 @@
 use crate::comments::Comments;
 use crate::expression::string::QuoteChar;
 use crate::PyFormatOptions;
-use ruff_formatter::{Buffer, FormatContext, GroupId, SourceCode};
+use ruff_formatter::{Buffer, FormatContext, GroupId, IndentWidth, SourceCode};
 use ruff_source_file::Locator;
 use std::fmt::{Debug, Formatter};
 use std::ops::{Deref, DerefMut};
@@ -12,6 +12,7 @@ pub struct PyFormatContext<'a> {
     contents: &'a str,
     comments: Comments<'a>,
     node_level: NodeLevel,
+    indent_level: IndentLevel,
     /// Set to a non-None value when the formatter is running on a code
     /// snippet within a docstring. The value should be the quote character of the
     /// docstring containing the code snippet.
@@ -30,6 +31,7 @@ impl<'a> PyFormatContext<'a> {
             contents,
             comments,
             node_level: NodeLevel::TopLevel(TopLevelStatementPosition::Other),
+            indent_level: IndentLevel::new(0),
             docstring: None,
         }
     }
@@ -51,6 +53,14 @@ impl<'a> PyFormatContext<'a> {
         self.node_level
     }
 
+    pub(crate) fn set_indent_level(&mut self, level: IndentLevel) {
+        self.indent_level = level;
+    }
+
+    pub(crate) fn indent_level(&self) -> IndentLevel {
+        self.indent_level
+    }
+
     pub(crate) fn comments(&self) -> &Comments<'a> {
         &self.comments
     }
@@ -210,3 +220,115 @@ where
             .set_node_level(self.saved_level);
     }
 }
+
+/// The current indent level of the formatter.
+///
+/// One can determine the the width of the indent itself (in number of ASCII
+/// space characters) by multiplying the indent level by the configured indent
+/// width.
+///
+/// This is specifically used inside the docstring code formatter for
+/// implementing its "dynamic" line width mode. Namely, in the nested call to
+/// the formatter, when "dynamic" mode is enabled, the line width is set to
+/// `min(1, line_width - indent_level * indent_width)`, where `line_width` in
+/// this context is the global line width setting.
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+pub(crate) struct IndentLevel {
+    /// The numeric level. It is incremented for every whole indent in Python
+    /// source code.
+    ///
+    /// Note that the first indentation level is actually 1, since this starts
+    /// at 0 and is incremented when the first top-level statement is seen. So
+    /// even though the first top-level statement in Python source will have no
+    /// indentation, its indentation level is 1.
+    level: u16,
+}
+
+impl IndentLevel {
+    /// Returns a new indent level for the given value.
+    pub(crate) fn new(level: u16) -> IndentLevel {
+        IndentLevel { level }
+    }
+
+    /// Returns the next indent level.
+    pub(crate) fn increment(self) -> IndentLevel {
+        IndentLevel {
+            level: self.level.saturating_add(1),
+        }
+    }
+
+    /// Convert this indent level into a specific number of ASCII whitespace
+    /// characters based on the given indent width.
+    pub(crate) fn to_ascii_spaces(self, width: IndentWidth) -> u16 {
+        let width = u16::try_from(width.value()).unwrap_or(u16::MAX);
+        // Why the subtraction? IndentLevel starts at 0 and asks for the "next"
+        // indent level before seeing the first top-level statement. So it's
+        // always 1 more than what we expect it to be.
+        let level = self.level.saturating_sub(1);
+        width.saturating_mul(level)
+    }
+}
+
+/// Change the [`IndentLevel`] of the formatter for the lifetime of this
+/// struct.
+pub(crate) struct WithIndentLevel<'a, B, D>
+where
+    D: DerefMut<Target = B>,
+    B: Buffer<Context = PyFormatContext<'a>>,
+{
+    buffer: D,
+    saved_level: IndentLevel,
+}
+
+impl<'a, B, D> WithIndentLevel<'a, B, D>
+where
+    D: DerefMut<Target = B>,
+    B: Buffer<Context = PyFormatContext<'a>>,
+{
+    pub(crate) fn new(level: IndentLevel, mut buffer: D) -> Self {
+        let context = buffer.state_mut().context_mut();
+        let saved_level = context.indent_level();
+
+        context.set_indent_level(level);
+
+        Self {
+            buffer,
+            saved_level,
+        }
+    }
+}
+
+impl<'a, B, D> Deref for WithIndentLevel<'a, B, D>
+where
+    D: DerefMut<Target = B>,
+    B: Buffer<Context = PyFormatContext<'a>>,
+{
+    type Target = B;
+
+    fn deref(&self) -> &Self::Target {
+        &self.buffer
+    }
+}
+
+impl<'a, B, D> DerefMut for WithIndentLevel<'a, B, D>
+where
+    D: DerefMut<Target = B>,
+    B: Buffer<Context = PyFormatContext<'a>>,
+{
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.buffer
+    }
+}
+
+impl<'a, B, D> Drop for WithIndentLevel<'a, B, D>
+where
+    D: DerefMut<Target = B>,
+    B: Buffer<Context = PyFormatContext<'a>>,
+{
+    fn drop(&mut self) {
+        self.buffer
+            .state_mut()
+            .context_mut()
+            .set_indent_level(self.saved_level);
+    }
+}
diff --git a/crates/ruff_python_formatter/src/expression/string/docstring.rs b/crates/ruff_python_formatter/src/expression/string/docstring.rs
index 0fb03ce07d882..e750a52641b03 100644
--- a/crates/ruff_python_formatter/src/expression/string/docstring.rs
+++ b/crates/ruff_python_formatter/src/expression/string/docstring.rs
@@ -7,13 +7,13 @@ use std::{borrow::Cow, collections::VecDeque};
 use {once_cell::sync::Lazy, regex::Regex};
 
 use {
-    ruff_formatter::{write, IndentStyle, Printed},
+    ruff_formatter::{write, FormatOptions, IndentStyle, LineWidth, Printed},
     ruff_python_trivia::{is_python_whitespace, PythonWhitespace},
     ruff_source_file::Locator,
     ruff_text_size::{Ranged, TextLen, TextRange, TextSize},
 };
 
-use crate::{prelude::*, FormatModuleError};
+use crate::{prelude::*, DocstringCodeLineWidth, FormatModuleError};
 
 use super::{NormalizedString, QuoteChar};
 
@@ -460,11 +460,22 @@ impl<'ast, 'buf, 'fmt, 'src> DocstringLinePrinter<'ast, 'buf, 'fmt, 'src> {
             .map(|line| line.code)
             .collect::<Vec<&str>>()
             .join("\n");
+        let line_width = match self.f.options().docstring_code_line_width() {
+            DocstringCodeLineWidth::Fixed(width) => width,
+            DocstringCodeLineWidth::Dynamic => {
+                let global_line_width = self.f.options().line_width().value();
+                let indent_width = self.f.options().indent_width();
+                let indent_level = self.f.context().indent_level();
+                let current_indent = indent_level.to_ascii_spaces(indent_width);
+                let width = std::cmp::max(1, global_line_width.saturating_sub(current_indent));
+                LineWidth::try_from(width).expect("width is capped at a minimum of 1")
+            }
+        };
         let options = self
             .f
             .options()
             .clone()
-            .with_line_width(self.f.options().docstring_code_line_width())
+            .with_line_width(line_width)
             // It's perhaps a little odd to be hard-coding the indent
             // style here, but I believe it is necessary as a result
             // of the whitespace normalization otherwise done in
diff --git a/crates/ruff_python_formatter/src/lib.rs b/crates/ruff_python_formatter/src/lib.rs
index ce3988dd54693..beaa4070c0c37 100644
--- a/crates/ruff_python_formatter/src/lib.rs
+++ b/crates/ruff_python_formatter/src/lib.rs
@@ -16,7 +16,8 @@ use crate::comments::{
 };
 pub use crate::context::PyFormatContext;
 pub use crate::options::{
-    DocstringCode, MagicTrailingComma, PreviewMode, PyFormatOptions, QuoteStyle,
+    DocstringCode, DocstringCodeLineWidth, MagicTrailingComma, PreviewMode, PyFormatOptions,
+    QuoteStyle,
 };
 pub use crate::shared_traits::{AsFormat, FormattedIter, FormattedIterExt, IntoFormat};
 use crate::verbatim::suppressed_node;
diff --git a/crates/ruff_python_formatter/src/options.rs b/crates/ruff_python_formatter/src/options.rs
index 003cfea4bf041..8f3bc431ec815 100644
--- a/crates/ruff_python_formatter/src/options.rs
+++ b/crates/ruff_python_formatter/src/options.rs
@@ -52,8 +52,7 @@ pub struct PyFormatOptions {
     /// The preferred line width at which the formatter should wrap lines in
     /// docstring code examples. This only has an impact when `docstring_code`
     /// is enabled.
-    #[cfg_attr(feature = "serde", serde(default = "default_line_width"))]
-    docstring_code_line_width: LineWidth,
+    docstring_code_line_width: DocstringCodeLineWidth,
 
     /// Whether preview style formatting is enabled or not
     preview: PreviewMode,
@@ -83,7 +82,7 @@ impl Default for PyFormatOptions {
             magic_trailing_comma: MagicTrailingComma::default(),
             source_map_generation: SourceMapGeneration::default(),
             docstring_code: DocstringCode::default(),
-            docstring_code_line_width: default_line_width(),
+            docstring_code_line_width: DocstringCodeLineWidth::default(),
             preview: PreviewMode::default(),
         }
     }
@@ -126,7 +125,7 @@ impl PyFormatOptions {
         self.docstring_code
     }
 
-    pub fn docstring_code_line_width(&self) -> LineWidth {
+    pub fn docstring_code_line_width(&self) -> DocstringCodeLineWidth {
         self.docstring_code_line_width
     }
 
@@ -302,3 +301,50 @@ impl DocstringCode {
         matches!(self, DocstringCode::Enabled)
     }
 }
+
+#[derive(Copy, Clone, Eq, PartialEq, CacheKey)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "lowercase"))]
+#[cfg_attr(feature = "serde", serde(untagged))]
+#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
+pub enum DocstringCodeLineWidth {
+    Fixed(LineWidth),
+    #[cfg_attr(
+        feature = "serde",
+        serde(deserialize_with = "deserialize_docstring_code_line_width_dynamic")
+    )]
+    Dynamic,
+}
+
+impl Default for DocstringCodeLineWidth {
+    fn default() -> DocstringCodeLineWidth {
+        DocstringCodeLineWidth::Fixed(default_line_width())
+    }
+}
+
+impl std::fmt::Debug for DocstringCodeLineWidth {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        match *self {
+            DocstringCodeLineWidth::Fixed(v) => v.value().fmt(f),
+            DocstringCodeLineWidth::Dynamic => "dynamic".fmt(f),
+        }
+    }
+}
+
+/// Responsible for deserializing the `DocstringCodeLineWidth::Dynamic`
+/// variant.
+fn deserialize_docstring_code_line_width_dynamic<'de, D>(d: D) -> Result<(), D::Error>
+where
+    D: serde::Deserializer<'de>,
+{
+    use serde::{de::Error, Deserialize};
+
+    let value = String::deserialize(d)?;
+    match &*value {
+        "dynamic" => Ok(()),
+        s => Err(D::Error::invalid_value(
+            serde::de::Unexpected::Str(s),
+            &"dynamic",
+        )),
+    }
+}
diff --git a/crates/ruff_python_formatter/src/statement/suite.rs b/crates/ruff_python_formatter/src/statement/suite.rs
index b60474dbd0043..1b33dbd41aa16 100644
--- a/crates/ruff_python_formatter/src/statement/suite.rs
+++ b/crates/ruff_python_formatter/src/statement/suite.rs
@@ -8,7 +8,7 @@ use ruff_text_size::{Ranged, TextRange};
 use crate::comments::{
     leading_comments, trailing_comments, Comments, LeadingDanglingTrailingComments,
 };
-use crate::context::{NodeLevel, TopLevelStatementPosition, WithNodeLevel};
+use crate::context::{NodeLevel, TopLevelStatementPosition, WithIndentLevel, WithNodeLevel};
 use crate::expression::string::StringLayout;
 use crate::prelude::*;
 use crate::statement::stmt_expr::FormatStmtExpr;
@@ -71,7 +71,8 @@ impl FormatRule<Suite, PyFormatContext<'_>> for FormatSuite {
         let source = f.context().source();
         let source_type = f.options().source_type();
 
-        let f = &mut WithNodeLevel::new(node_level, f);
+        let f = WithNodeLevel::new(node_level, f);
+        let f = &mut WithIndentLevel::new(f.context().indent_level().increment(), f);
 
         // Format the first statement in the body, which often has special formatting rules.
         let first = match self.kind {
diff --git a/crates/ruff_python_formatter/tests/fixtures.rs b/crates/ruff_python_formatter/tests/fixtures.rs
index a425a1e597bd1..3845385d7335f 100644
--- a/crates/ruff_python_formatter/tests/fixtures.rs
+++ b/crates/ruff_python_formatter/tests/fixtures.rs
@@ -363,7 +363,7 @@ preview                    = {preview:?}"#,
             line_ending = self.0.line_ending(),
             magic_trailing_comma = self.0.magic_trailing_comma(),
             docstring_code = self.0.docstring_code(),
-            docstring_code_line_width = self.0.docstring_code_line_width().value(),
+            docstring_code_line_width = self.0.docstring_code_line_width(),
             preview = self.0.preview()
         )
     }
diff --git a/crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples.py.snap b/crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples.py.snap
index e0c672c090b0c..b93825ea198e6 100644
--- a/crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples.py.snap
+++ b/crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples.py.snap
@@ -13673,4 +13673,1371 @@ def markdown_skipped_rst_directive():
 ```
 
 
+### Output 10
+```
+indent-style               = space
+line-width                 = 88
+indent-width               = 4
+quote-style                = Double
+line-ending                = LineFeed
+magic-trailing-comma       = Respect
+docstring-code             = Enabled
+docstring-code-line-width  = "dynamic"
+preview                    = Disabled
+```
+
+```python
+###############################################################################
+# DOCTEST CODE EXAMPLES
+#
+# This section shows examples of docstrings that contain code snippets in
+# Python's "doctest" format.
+#
+# See: https://docs.python.org/3/library/doctest.html
+###############################################################################
+
+# The simplest doctest to ensure basic formatting works.
+def doctest_simple():
+    """
+    Do cool stuff.
+
+    >>> cool_stuff(1)
+    2
+    """
+    pass
+
+
+# Another simple test, but one where the Python code
+# extends over multiple lines.
+def doctest_simple_continued():
+    """
+    Do cool stuff.
+
+    >>> def cool_stuff(x):
+    ...     print(f"hi {x}")
+    hi 2
+    """
+    pass
+
+
+# Test that we support multiple directly adjacent
+# doctests.
+def doctest_adjacent():
+    """
+    Do cool stuff.
+
+    >>> cool_stuff(x)
+    >>> cool_stuff(y)
+    2
+    """
+    pass
+
+
+# Test that a doctest on the last non-whitespace line of a docstring
+# reformats correctly.
+def doctest_last_line():
+    """
+    Do cool stuff.
+
+    >>> cool_stuff(x)
+    """
+    pass
+
+
+# Test that a doctest that continues to the last non-whitespace line of
+# a docstring reformats correctly.
+def doctest_last_line_continued():
+    """
+    Do cool stuff.
+
+    >>> def cool_stuff(x):
+    ...     print(f"hi {x}")
+    """
+    pass
+
+
+# Test that a doctest on the real last line of a docstring reformats
+# correctly.
+def doctest_really_last_line():
+    """
+    Do cool stuff.
+
+    >>> cool_stuff(x)"""
+    pass
+
+
+# Test that a continued doctest on the real last line of a docstring reformats
+# correctly.
+def doctest_really_last_line_continued():
+    """
+    Do cool stuff.
+
+    >>> cool_stuff(x)
+    ... more(y)"""
+    pass
+
+
+# Test that a doctest is correctly identified and formatted with a blank
+# continuation line.
+def doctest_blank_continued():
+    """
+    Do cool stuff.
+
+    >>> def cool_stuff(x):
+    ...     print(x)
+    ...
+    ...     print(x)
+    """
+    pass
+
+
+# Tests that a blank PS2 line at the end of a doctest can get dropped.
+# It is treated as part of the Python snippet which will trim the
+# trailing whitespace.
+def doctest_blank_end():
+    """
+    Do cool stuff.
+
+    >>> def cool_stuff(x):
+    ...     print(x)
+    ...     print(x)
+    """
+    pass
+
+
+# Tests that a blank PS2 line at the end of a doctest can get dropped
+# even when there is text following it.
+def doctest_blank_end_then_some_text():
+    """
+    Do cool stuff.
+
+    >>> def cool_stuff(x):
+    ...     print(x)
+    ...     print(x)
+
+    And say something else.
+    """
+    pass
+
+
+# Test that a doctest containing a triple quoted string gets formatted
+# correctly and doesn't result in invalid syntax.
+def doctest_with_triple_single():
+    """
+    Do cool stuff.
+
+    >>> x = '''tricksy'''
+    """
+    pass
+
+
+# Test that a doctest containing a triple quoted f-string gets
+# formatted correctly and doesn't result in invalid syntax.
+def doctest_with_triple_single():
+    """
+    Do cool stuff.
+
+    >>> x = f'''tricksy'''
+    """
+    pass
+
+
+# Another nested multi-line string case, but with triple escaped double
+# quotes inside a triple single quoted string.
+def doctest_with_triple_escaped_double():
+    """
+    Do cool stuff.
+
+    >>> x = '''\"\"\"'''
+    """
+    pass
+
+
+# Tests that inverting the triple quoting works as expected.
+def doctest_with_triple_inverted():
+    '''
+    Do cool stuff.
+
+    >>> x = """tricksy"""
+    '''
+    pass
+
+
+# Tests that inverting the triple quoting with an f-string works as
+# expected.
+def doctest_with_triple_inverted_fstring():
+    '''
+    Do cool stuff.
+
+    >>> x = f"""tricksy"""
+    '''
+    pass
+
+
+# Tests nested doctests are ignored. That is, we don't format doctests
+# recursively. We only recognize "top level" doctests.
+#
+# This restriction primarily exists to avoid needing to deal with
+# nesting quotes. It also seems like a generally sensible restriction,
+# although it could be lifted if necessary I believe.
+def doctest_nested_doctest_not_formatted():
+    '''
+    Do cool stuff.
+
+    >>> def nested(x):
+    ...     """
+    ...     Do nested cool stuff.
+    ...     >>> func_call( 5 )
+    ...     """
+    ...     pass
+    '''
+    pass
+
+
+# Tests that the starting column does not matter.
+def doctest_varying_start_column():
+    """
+    Do cool stuff.
+
+    >>> assert "Easy!"
+      >>> import math
+          >>> math.floor(1.9)
+          1
+    """
+    pass
+
+
+# Tests that long lines get wrapped... appropriately.
+#
+# The docstring code formatter uses the same line width settings as for
+# formatting other code. This means that a line in the docstring can
+# actually extend past the configured line limit.
+#
+# It's not quite clear whether this is desirable or not. We could in
+# theory compute the intendation length of a code snippet and then
+# adjust the line-width setting on a recursive call to the formatter.
+# But there are assuredly pathological cases to consider. Another path
+# would be to expose another formatter option for controlling the
+# line-width of code snippets independently.
+def doctest_long_lines():
+    """
+    Do cool stuff.
+
+    This won't get wrapped even though it exceeds our configured
+    line width because it doesn't exceed the line width within this
+    docstring. e.g, the `f` in `foo` is treated as the first column.
+    >>> foo, bar, quux = this_is_a_long_line(
+    ...     lion, giraffe, hippo, zeba, lemur, penguin, monkey
+    ... )
+
+    But this one is long enough to get wrapped.
+    >>> foo, bar, quux = this_is_a_long_line(
+    ...     lion, giraffe, hippo, zeba, lemur, penguin, monkey, spider, bear, leopard
+    ... )
+    """
+    # This demostrates a normal line that will get wrapped but won't
+    # get wrapped in the docstring above because of how the line-width
+    # setting gets reset at the first column in each code snippet.
+    foo, bar, quux = this_is_a_long_line(
+        lion, giraffe, hippo, zeba, lemur, penguin, monkey
+    )
+
+
+# Checks that a simple but invalid doctest gets skipped.
+def doctest_skipped_simple():
+    """
+    Do cool stuff.
+
+    >>> cool-stuff( x ):
+    2
+    """
+    pass
+
+
+# Checks that a simple doctest that is continued over multiple lines,
+# but is invalid, gets skipped.
+def doctest_skipped_simple_continued():
+    """
+    Do cool stuff.
+
+    >>> def cool-stuff( x ):
+    ...     print( f"hi {x}" );
+    2
+    """
+    pass
+
+
+# Checks that a doctest with improper indentation gets skipped.
+def doctest_skipped_inconsistent_indent():
+    """
+    Do cool stuff.
+
+     >>> def cool_stuff( x ):
+    ...     print( f"hi {x}" );
+    hi 2
+    """
+    pass
+
+
+# Checks that a doctest with some proper indentation and some improper
+# indentation is "partially" formatted. That is, the part that appears
+# before the inconsistent indentation is formatted. This requires that
+# the part before it is valid Python.
+def doctest_skipped_partial_inconsistent_indent():
+    """
+    Do cool stuff.
+
+     >>> def cool_stuff(x):
+     ...     print(x)
+    ...     print( f"hi {x}" );
+    hi 2
+    """
+    pass
+
+
+# Checks that a doctest with improper triple single quoted string gets
+# skipped. That is, the code snippet is itself invalid Python, so it is
+# left as is.
+def doctest_skipped_triple_incorrect():
+    """
+    Do cool stuff.
+
+    >>> foo( x )
+    ... '''tri'''cksy'''
+    """
+    pass
+
+
+# Tests that a doctest on a single line is skipped.
+def doctest_skipped_one_line():
+    ">>> foo( x )"
+    pass
+
+
+# f-strings are not considered docstrings[1], so any doctests
+# inside of them should not be formatted.
+#
+# [1]: https://docs.python.org/3/reference/lexical_analysis.html#formatted-string-literals
+def doctest_skipped_fstring():
+    f"""
+    Do cool stuff.
+
+    >>> cool_stuff( 1 )
+    2
+    """
+    pass
+
+
+# Test that a doctest containing a triple quoted string at least
+# does not result in invalid Python code. Ideally this would format
+# correctly, but at time of writing it does not.
+def doctest_invalid_skipped_with_triple_double_in_single_quote_string():
+    """
+    Do cool stuff.
+
+    >>> x        =      '\"\"\"'
+    """
+    pass
+
+
+###############################################################################
+# reStructuredText CODE EXAMPLES
+#
+# This section shows examples of docstrings that contain code snippets in
+# reStructuredText formatted code blocks.
+#
+# See: https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html#literal-blocks
+# See: https://www.sphinx-doc.org/en/master/usage/restructuredtext/directives.html#directive-code-block
+# See: https://docutils.sourceforge.io/docs/ref/rst/restructuredtext.html#literal-blocks
+# See: https://docutils.sourceforge.io/docs/ref/rst/restructuredtext.html#toc-entry-30
+# See: https://docutils.sourceforge.io/docs/ref/rst/restructuredtext.html#toc-entry-38
+###############################################################################
+
+
+def rst_literal_simple():
+    """
+    Do cool stuff::
+
+        cool_stuff(1)
+
+    Done.
+    """
+    pass
+
+
+def rst_literal_simple_continued():
+    """
+    Do cool stuff::
+
+        def cool_stuff(x):
+            print(f"hi {x}")
+
+    Done.
+    """
+    pass
+
+
+# Tests that we can end the literal block on the second
+# to last line of the docstring.
+def rst_literal_second_to_last():
+    """
+    Do cool stuff::
+
+        cool_stuff(1)
+    """
+    pass
+
+
+# Tests that we can end the literal block on the actual
+# last line of the docstring.
+def rst_literal_actually_last():
+    """
+    Do cool stuff::
+
+        cool_stuff(1)"""
+    pass
+
+
+def rst_literal_with_blank_lines():
+    """
+    Do cool stuff::
+
+        def cool_stuff(x):
+            print(f"hi {x}")
+
+
+        def other_stuff(y):
+            print(y)
+
+    Done.
+    """
+    pass
+
+
+# Extra blanks should be preserved.
+def rst_literal_extra_blanks():
+    """
+    Do cool stuff::
+
+
+
+        cool_stuff(1)
+
+
+
+    Done.
+    """
+    pass
+
+
+# If a literal block is never properly ended (via a non-empty unindented line),
+# then the end of the block should be the last non-empty line. And subsequent
+# empty lines should be preserved as-is.
+def rst_literal_extra_blanks_at_end():
+    """
+    Do cool stuff::
+
+
+        cool_stuff(1)
+
+
+
+    """
+    pass
+
+
+# A literal block can contain many empty lines and it should not end the block
+# if it continues.
+def rst_literal_extra_blanks_in_snippet():
+    """
+    Do cool stuff::
+
+        cool_stuff(1)
+
+
+        cool_stuff(2)
+
+    Done.
+    """
+    pass
+
+
+# This tests that a unindented line appearing after an indented line (but where
+# the indent is still beyond the minimum) gets formatted properly.
+def rst_literal_subsequent_line_not_indented():
+    """
+    Do cool stuff::
+
+     if True:
+         cool_stuff(
+             '''
+     hiya'''
+         )
+
+    Done.
+    """
+    pass
+
+
+# This checks that if the first line in a code snippet has been indented with
+# tabs, then so long as its "indentation length" is considered bigger than the
+# line with `::`, it is reformatted as code.
+#
+# (If your tabwidth is set to 4, then it looks like the code snippet
+# isn't indented at all, which is perhaps counter-intuitive. Indeed, reST
+# itself also seems to recognize this as a code block, although it appears
+# under-specified.)
+def rst_literal_first_line_indent_uses_tabs_4spaces():
+    """
+    Do cool stuff::
+
+        cool_stuff(1)
+
+    Done.
+    """
+    pass
+
+
+# Like the test above, but with multiple lines.
+def rst_literal_first_line_indent_uses_tabs_4spaces_multiple():
+    """
+    Do cool stuff::
+
+        cool_stuff(1)
+        cool_stuff(2)
+
+    Done.
+    """
+    pass
+
+
+# Another test with tabs, except in this case, if your tabwidth is less than
+# 8, than the code snippet actually looks like its indent is *less* than the
+# opening line with a `::`. One might presume this means that the code snippet
+# is not treated as a literal block and thus not reformatted, but since we
+# assume all tabs have tabwidth=8 when computing indentation length, the code
+# snippet is actually seen as being more indented than the opening `::` line.
+# As with the above example, reST seems to behave the same way here.
+def rst_literal_first_line_indent_uses_tabs_8spaces():
+    """
+    Do cool stuff::
+
+     cool_stuff(1)
+
+    Done.
+    """
+    pass
+
+
+# Like the test above, but with multiple lines.
+def rst_literal_first_line_indent_uses_tabs_8spaces_multiple():
+    """
+    Do cool stuff::
+
+     cool_stuff(1)
+     cool_stuff(2)
+
+    Done.
+    """
+    pass
+
+
+# Tests that if two lines in a literal block are indented to the same level
+# but by different means (tabs versus spaces), then we correctly recognize the
+# block and format it.
+def rst_literal_first_line_tab_second_line_spaces():
+    """
+    Do cool stuff::
+
+        cool_stuff(1)
+        cool_stuff(2)
+
+    Done.
+    """
+    pass
+
+
+# Tests that when two lines in a code snippet have weird and inconsistent
+# indentation, the code still gets formatted so long as the indent is greater
+# than the indent of the `::` line.
+#
+# In this case, the minimum indent is 5 spaces (from the second line) where as
+# the first line has an indent of 8 spaces via a tab (by assuming tabwidth=8).
+# The minimum indent is stripped from each code line. Since tabs aren't
+# divisible, the entire tab is stripped, which means the first and second lines
+# wind up with the same level of indentation.
+#
+# An alternative behavior here would be that the tab is replaced with 3 spaces
+# instead of being stripped entirely. The code snippet itself would then have
+# inconsistent indentation to the point of being invalid Python, and thus code
+# formatting would be skipped.
+#
+# I decided on the former behavior because it seems a bit easier to implement,
+# but we might want to switch to the alternative if cases like this show up in
+# the real world. ---AG
+def rst_literal_odd_indentation():
+    """
+    Do cool stuff::
+
+     cool_stuff(1)
+     cool_stuff(2)
+
+    Done.
+    """
+    pass
+
+
+# Tests that having a line with a lone `::` works as an introduction of a
+# literal block.
+def rst_literal_lone_colon():
+    """
+    Do cool stuff.
+
+    ::
+
+        cool_stuff(1)
+
+    Done.
+    """
+    pass
+
+
+def rst_directive_simple():
+    """
+    .. code-block:: python
+
+        cool_stuff(1)
+
+    Done.
+    """
+    pass
+
+
+def rst_directive_case_insensitive():
+    """
+    .. cOdE-bLoCk:: python
+
+        cool_stuff(1)
+
+    Done.
+    """
+    pass
+
+
+def rst_directive_sourcecode():
+    """
+    .. sourcecode:: python
+
+        cool_stuff(1)
+
+    Done.
+    """
+    pass
+
+
+def rst_directive_options():
+    """
+    .. code-block:: python
+        :linenos:
+        :emphasize-lines: 2,3
+        :name: blah blah
+
+        cool_stuff(1)
+        cool_stuff(2)
+        cool_stuff(3)
+        cool_stuff(4)
+
+    Done.
+    """
+    pass
+
+
+# In this case, since `pycon` isn't recognized as a Python code snippet, the
+# docstring reformatter ignores it. But it then picks up the doctest and
+# reformats it.
+def rst_directive_doctest():
+    """
+    .. code-block:: pycon
+
+        >>> cool_stuff(1)
+
+    Done.
+    """
+    pass
+
+
+# This checks that if the first non-empty line after the start of a literal
+# block is not indented more than the line containing the `::`, then it is not
+# treated as a code snippet.
+def rst_literal_skipped_first_line_not_indented():
+    """
+    Do cool stuff::
+
+    cool_stuff( 1 )
+
+    Done.
+    """
+    pass
+
+
+# Like the test above, but inserts an indented line after the un-indented one.
+# This should not cause the literal block to be resumed.
+def rst_literal_skipped_first_line_not_indented_then_indented():
+    """
+    Do cool stuff::
+
+    cool_stuff( 1 )
+      cool_stuff( 2 )
+
+    Done.
+    """
+    pass
+
+
+# This also checks that a code snippet is not reformatted when the indentation
+# of the first line is not more than the line with `::`, but this uses tabs to
+# make it a little more confounding. It relies on the fact that indentation
+# length is computed by assuming a tabwidth equal to 8. reST also rejects this
+# and doesn't treat it as a literal block.
+def rst_literal_skipped_first_line_not_indented_tab():
+    """
+    Do cool stuff::
+
+    cool_stuff( 1 )
+
+    Done.
+    """
+    pass
+
+
+# Like the previous test, but adds a second line.
+def rst_literal_skipped_first_line_not_indented_tab_multiple():
+    """
+    Do cool stuff::
+
+    cool_stuff( 1 )
+    cool_stuff( 2 )
+
+    Done.
+    """
+    pass
+
+
+# Tests that a code block with a second line that is not properly indented gets
+# skipped. A valid code block needs to have an empty line separating these.
+#
+# One trick here is that we need to make sure the Python code in the snippet is
+# valid, otherwise it would be skipped because of invalid Python.
+def rst_literal_skipped_subsequent_line_not_indented():
+    """
+    Do cool stuff::
+
+     if True:
+        cool_stuff( '''
+    hiya''' )
+
+    Done.
+    """
+    pass
+
+
+# In this test, we write what looks like a code-block, but it should be treated
+# as invalid due to the missing `language` argument.
+#
+# It does still look like it could be a literal block according to the literal
+# rules, but we currently consider the `.. ` prefix to indicate that it is not
+# a literal block.
+def rst_literal_skipped_not_directive():
+    """
+    .. code-block::
+
+        cool_stuff( 1 )
+
+    Done.
+    """
+    pass
+
+
+# In this test, we start a line with `.. `, which makes it look like it might
+# be a directive. But instead continue it as if it was just some periods from
+# the previous line, and then try to end it by starting a literal block.
+#
+# But because of the `.. ` in the beginning, we wind up not treating this as a
+# code snippet. The reST render I was using to test things does actually treat
+# this as a code block, so we may be out of conformance here.
+def rst_literal_skipped_possible_false_negative():
+    """
+    This is a test.
+    .. This is a test::
+
+        cool_stuff( 1 )
+
+    Done.
+    """
+    pass
+
+
+# This tests that a doctest inside of a reST literal block doesn't get
+# reformatted. It's plausible this isn't the right behavior, but it also seems
+# like it might be the right behavior since it is a literal block. (The doctest
+# makes the Python code invalid.)
+def rst_literal_skipped_doctest():
+    """
+    Do cool stuff::
+
+        >>> cool_stuff( 1 )
+
+    Done.
+    """
+    pass
+
+
+def rst_literal_skipped_markdown():
+    """
+    Do cool stuff::
+
+        ```py
+        cool_stuff( 1 )
+        ```
+
+    Done.
+    """
+    pass
+
+
+def rst_directive_skipped_not_indented():
+    """
+    .. code-block:: python
+
+    cool_stuff( 1 )
+
+    Done.
+    """
+    pass
+
+
+def rst_directive_skipped_wrong_language():
+    """
+    .. code-block:: rust
+
+        cool_stuff( 1 )
+
+    Done.
+    """
+    pass
+
+
+# This gets skipped for the same reason that the doctest in a literal block
+# gets skipped.
+def rst_directive_skipped_doctest():
+    """
+    .. code-block:: python
+
+        >>> cool_stuff( 1 )
+
+    Done.
+    """
+    pass
+
+
+###############################################################################
+# Markdown CODE EXAMPLES
+#
+# This section shows examples of docstrings that contain code snippets in
+# Markdown fenced code blocks.
+#
+# See: https://spec.commonmark.org/0.30/#fenced-code-blocks
+###############################################################################
+
+
+def markdown_simple():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)
+    ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_simple_continued():
+    """
+    Do cool stuff.
+
+    ```python
+    def cool_stuff(x):
+        print(f"hi {x}")
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Tests that unlabeled Markdown fenced code blocks are assumed to be Python.
+def markdown_unlabeled():
+    """
+    Do cool stuff.
+
+    ```
+    cool_stuff(1)
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Tests that fenced code blocks using tildes work.
+def markdown_tildes():
+    """
+    Do cool stuff.
+
+    ~~~py
+    cool_stuff(1)
+    ~~~
+
+    Done.
+    """
+    pass
+
+
+# Tests that a longer closing fence is just fine and dandy.
+def markdown_longer_closing_fence():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)
+    ``````
+
+    Done.
+    """
+    pass
+
+
+# Tests that an invalid closing fence is treated as invalid.
+#
+# We embed it into a docstring so that the surrounding Python
+# remains valid.
+def markdown_longer_closing_fence():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)
+    '''
+    ```invalid
+    '''
+    cool_stuff(2)
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Tests that one can nest fenced code blocks by using different numbers of
+# backticks.
+def markdown_nested_fences():
+    """
+    Do cool stuff.
+
+    ``````
+    do_something(
+        '''
+    ```
+    did i trick you?
+    ```
+    '''
+    )
+    ``````
+
+    Done.
+    """
+    pass
+
+
+# Tests that an unclosed block gobbles up everything remaining in the
+# docstring. When it's only empty lines, those are passed into the formatter
+# and thus stripped.
+def markdown_unclosed_empty_lines():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)"""
+    pass
+
+
+# Tests that we can end the block on the second to last line of the
+# docstring.
+def markdown_second_to_last():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)
+    ```
+    """
+    pass
+
+
+# Tests that an unclosed block with one extra line at the end is treated
+# correctly. As per the CommonMark spec, an unclosed fenced code block contains
+# everything following the opening fences. Since formatting the code snippet
+# trims lines, the last empty line is removed here.
+def markdown_second_to_last():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)"""
+    pass
+
+
+# Tests that we can end the block on the actual last line of the docstring.
+def markdown_actually_last():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)
+    ```"""
+    pass
+
+
+# Tests that an unclosed block that ends on the last line of a docstring
+# is handled correctly.
+def markdown_unclosed_actually_last():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)"""
+    pass
+
+
+def markdown_with_blank_lines():
+    """
+    Do cool stuff.
+
+    ```py
+    def cool_stuff(x):
+        print(f"hi {x}")
+
+
+    def other_stuff(y):
+        print(y)
+    ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_first_line_indent_uses_tabs_4spaces():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)
+    ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_first_line_indent_uses_tabs_4spaces_multiple():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)
+    cool_stuff(2)
+    ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_first_line_indent_uses_tabs_8spaces():
+    """
+    Do cool stuff.
+
+     ```py
+     cool_stuff(1)
+     ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_first_line_indent_uses_tabs_8spaces_multiple():
+    """
+    Do cool stuff.
+
+     ```py
+     cool_stuff(1)
+     cool_stuff(2)
+     ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_first_line_tab_second_line_spaces():
+    """
+    Do cool stuff.
+
+        ```py
+        cool_stuff(1)
+        cool_stuff(2)
+        ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_odd_indentation():
+    """
+    Do cool stuff.
+
+        ```py
+        cool_stuff(1)
+        cool_stuff(2)
+        ```
+
+    Done.
+    """
+    pass
+
+
+# Extra blanks should be *not* be preserved (unlike reST) because they are part
+# of the code snippet (per CommonMark spec), and thus get trimmed as part of
+# code formatting.
+def markdown_extra_blanks():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)
+    ```
+
+    Done.
+    """
+    pass
+
+
+# A block can contain many empty lines within it.
+def markdown_extra_blanks_in_snippet():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff(1)
+
+
+    cool_stuff(2)
+    ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_weird_closing():
+    """
+    Code block with weirdly placed closing fences.
+
+      ```python
+      cool_stuff(1)
+           ```
+        # The above fences look like it shouldn't close the block, but we
+        # allow it to. The fences below re-open a block (until the end of
+        # the docstring), but it's invalid Python and thus doesn't get
+        # reformatted.
+          a = 10
+      ```
+
+      Now the code block is closed
+    """
+    pass
+
+
+def markdown_over_indented():
+    """
+    A docstring
+        over intended
+        ```python
+        print(5)
+        ```
+    """
+    pass
+
+
+# This tests that we can have additional text after the language specifier.
+def markdown_additional_info_string():
+    """
+    Do cool stuff.
+
+    ```python tab="plugin.py"
+    cool_stuff(1)
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Tests that an unclosed block gobbles up everything remaining in the
+# docstring, even if it isn't valid Python. Since it isn't valid Python,
+# reformatting fails and the entire thing is skipped.
+def markdown_skipped_unclosed_non_python():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff( 1 )
+
+    I forgot to close the code block, and this is definitely not
+    Python. So nothing here gets formatted.
+    """
+    pass
+
+
+# This has a Python snippet with a docstring that contains a closing fence.
+# This splits the embedded docstring and makes the overall snippet invalid.
+def markdown_skipped_accidental_closure():
+    """
+    Do cool stuff.
+
+    ```py
+    cool_stuff( 1 )
+    '''
+    ```
+    '''
+    ```
+
+    Done.
+    """
+    pass
+
+
+# When a line is unindented all the way out before the standard indent of the
+# docstring, the code reformatting ends up interacting poorly with the standard
+# docstring whitespace normalization logic. This is probably a bug, and we
+# should probably treat the Markdown block as valid, but for now, we detect
+# the unindented line and declare the block as invalid and thus do no code
+# reformatting.
+#
+# FIXME: Fixing this (if we think it's a bug) probably requires refactoring the
+# docstring whitespace normalization to be aware of code snippets. Or perhaps
+# plausibly, to do normalization *after* code snippets have been formatted.
+def markdown_skipped_unindented_completely():
+    """
+        Do cool stuff.
+
+            ```py
+    cool_stuff( 1 )
+            ```
+
+        Done.
+    """
+    pass
+
+
+# This test is fallout from treating fenced code blocks with unindented lines
+# as invalid. We probably should treat this as a valid block. Indeed, if we
+# remove the logic that makes the `markdown_skipped_unindented_completely` test
+# pass, then this code snippet will get reformatted correctly.
+def markdown_skipped_unindented_somewhat():
+    """
+    Do cool stuff.
+
+        ```py
+    cool_stuff( 1 )
+        ```
+
+    Done.
+    """
+    pass
+
+
+# This tests that if a Markdown block contains a line that has less of an
+# indent than another line.
+#
+# There is some judgment involved in what the right behavior is here. We
+# could "normalize" the indentation so that the minimum is the indent of the
+# opening fence line. If we did that here, then the code snippet would become
+# valid and format as Python. But at time of writing, we don't, which leads to
+# inconsistent indentation and thus invalid Python.
+def markdown_skipped_unindented_with_inconsistent_indentation():
+    """
+    Do cool stuff.
+
+        ```py
+    cool_stuff( 1 )
+        cool_stuff( 2 )
+        ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_skipped_doctest():
+    """
+    Do cool stuff.
+
+    ```py
+    >>> cool_stuff( 1 )
+    ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_skipped_rst_literal():
+    """
+    Do cool stuff.
+
+    ```py
+    And do this::
+
+        cool_stuff( 1 )
+
+    ```
+
+    Done.
+    """
+    pass
+
+
+def markdown_skipped_rst_directive():
+    """
+    Do cool stuff.
+
+    ```py
+    .. code-block:: python
+
+        cool_stuff( 1 )
+
+    ```
+
+    Done.
+    """
+    pass
+```
+
+
 
diff --git a/crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples_dynamic_line_width.py.snap b/crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples_dynamic_line_width.py.snap
new file mode 100644
index 0000000000000..91c1984124c9d
--- /dev/null
+++ b/crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples_dynamic_line_width.py.snap
@@ -0,0 +1,1630 @@
+---
+source: crates/ruff_python_formatter/tests/fixtures.rs
+input_file: crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_dynamic_line_width.py
+---
+## Input
+```python
+def simple():
+    """
+    First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Like simple, but we double everything up to ensure the indent level is
+# tracked correctly.
+def repeated():
+    """
+    First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+
+    class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+            self.x = doit( 5 )
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Like simple, but we make one line exactly one character longer than the limit
+# (for 4-space indents) and make sure it gets wrapped.
+def barely_exceeds_limit():
+    """
+    First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+        def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+                # For 4 space indents, this is 89 columns, which is one
+                # more than the limit. Therefore, it should get wrapped for
+                # indent_width >= 4.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678)
+                return 5
+            self.x = doit( 5 )
+    ```
+
+    Done.
+    """
+    pass
+
+
+# This tests that if the code block is unindented, that it gets indented and
+# the dynamic line width setting is applied correctly.
+def unindented():
+    """
+    First line.
+
+```py
+class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+    def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+        def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            # For 4 space indents, this is just one character shy of
+            # tripping the default line width of 88. So it should not be
+            # wrapped.
+            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+            return 5
+        self.x = doit( 5 )
+```
+
+    Done.
+    """
+    pass
+
+
+# Like unindented, but contains a `print` line where it just barely exceeds the
+# globally configured line width *after* its indentation has been corrected.
+def unindented_barely_exceeds_limit():
+    """
+    First line.
+
+```py
+class Abcdefghijklmopqrstuvwxyz(Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5):
+    def abcdefghijklmnopqrstuvwxyz(self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+        def abcdefghijklmnopqrstuvwxyz(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4):
+            # For 4 space indents, this is 89 columns, which is one
+            # more than the limit. Therefore, it should get wrapped for
+            # indent_width >= 4.
+            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678)
+            return 5
+        self.x = doit( 5 )
+```
+
+    Done.
+    """
+    pass
+```
+
+## Outputs
+### Output 1
+```
+indent-style               = space
+line-width                 = 88
+indent-width               = 4
+quote-style                = Double
+line-ending                = LineFeed
+magic-trailing-comma       = Respect
+docstring-code             = Enabled
+docstring-code-line-width  = "dynamic"
+preview                    = Disabled
+```
+
+```python
+def simple():
+    """
+    First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(
+        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+    ):
+        def abcdefghijklmnopqrstuvwxyz(
+            self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+        ):
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Like simple, but we double everything up to ensure the indent level is
+# tracked correctly.
+def repeated():
+    """
+    First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(
+        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+    ):
+        def abcdefghijklmnopqrstuvwxyz(
+            self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+        ):
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+
+        def abcdefghijklmnopqrstuvwxyz(
+            self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+        ):
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+
+
+    class Abcdefghijklmopqrstuvwxyz(
+        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+    ):
+        def abcdefghijklmnopqrstuvwxyz(
+            self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+        ):
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+
+        def abcdefghijklmnopqrstuvwxyz(
+            self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+        ):
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+    ```
+
+    Done.
+    """
+    pass
+
+
+# Like simple, but we make one line exactly one character longer than the limit
+# (for 4-space indents) and make sure it gets wrapped.
+def barely_exceeds_limit():
+    """
+    First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(
+        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+    ):
+        def abcdefghijklmnopqrstuvwxyz(
+            self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+        ):
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is 89 columns, which is one
+                # more than the limit. Therefore, it should get wrapped for
+                # indent_width >= 4.
+                print(
+                    abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678
+                )
+                return 5
+
+            self.x = doit(5)
+    ```
+
+    Done.
+    """
+    pass
+
+
+# This tests that if the code block is unindented, that it gets indented and
+# the dynamic line width setting is applied correctly.
+def unindented():
+    """
+        First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(
+        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+    ):
+        def abcdefghijklmnopqrstuvwxyz(
+            self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+        ):
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is just one character shy of
+                # tripping the default line width of 88. So it should not be
+                # wrapped.
+                print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+                return 5
+
+            self.x = doit(5)
+    ```
+
+        Done.
+    """
+    pass
+
+
+# Like unindented, but contains a `print` line where it just barely exceeds the
+# globally configured line width *after* its indentation has been corrected.
+def unindented_barely_exceeds_limit():
+    """
+        First line.
+
+    ```py
+    class Abcdefghijklmopqrstuvwxyz(
+        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+    ):
+        def abcdefghijklmnopqrstuvwxyz(
+            self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+        ):
+            def abcdefghijklmnopqrstuvwxyz(
+                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+            ):
+                # For 4 space indents, this is 89 columns, which is one
+                # more than the limit. Therefore, it should get wrapped for
+                # indent_width >= 4.
+                print(
+                    abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678
+                )
+                return 5
+
+            self.x = doit(5)
+    ```
+
+        Done.
+    """
+    pass
+```
+
+
+### Output 2
+```
+indent-style               = space
+line-width                 = 88
+indent-width               = 2
+quote-style                = Double
+line-ending                = LineFeed
+magic-trailing-comma       = Respect
+docstring-code             = Enabled
+docstring-code-line-width  = "dynamic"
+preview                    = Disabled
+```
+
+```python
+def simple():
+  """
+  First line.
+
+  ```py
+  class Abcdefghijklmopqrstuvwxyz(
+    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+  ):
+    def abcdefghijklmnopqrstuvwxyz(
+      self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+    ):
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+  ```
+
+  Done.
+  """
+  pass
+
+
+# Like simple, but we double everything up to ensure the indent level is
+# tracked correctly.
+def repeated():
+  """
+  First line.
+
+  ```py
+  class Abcdefghijklmopqrstuvwxyz(
+    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+  ):
+    def abcdefghijklmnopqrstuvwxyz(
+      self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+    ):
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+
+    def abcdefghijklmnopqrstuvwxyz(
+      self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+    ):
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+
+
+  class Abcdefghijklmopqrstuvwxyz(
+    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+  ):
+    def abcdefghijklmnopqrstuvwxyz(
+      self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+    ):
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+
+    def abcdefghijklmnopqrstuvwxyz(
+      self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+    ):
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+  ```
+
+  Done.
+  """
+  pass
+
+
+# Like simple, but we make one line exactly one character longer than the limit
+# (for 4-space indents) and make sure it gets wrapped.
+def barely_exceeds_limit():
+  """
+  First line.
+
+  ```py
+  class Abcdefghijklmopqrstuvwxyz(
+    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+  ):
+    def abcdefghijklmnopqrstuvwxyz(
+      self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+    ):
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is 89 columns, which is one
+        # more than the limit. Therefore, it should get wrapped for
+        # indent_width >= 4.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678)
+        return 5
+
+      self.x = doit(5)
+  ```
+
+  Done.
+  """
+  pass
+
+
+# This tests that if the code block is unindented, that it gets indented and
+# the dynamic line width setting is applied correctly.
+def unindented():
+  """
+      First line.
+
+  ```py
+  class Abcdefghijklmopqrstuvwxyz(
+    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+  ):
+    def abcdefghijklmnopqrstuvwxyz(
+      self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+    ):
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is just one character shy of
+        # tripping the default line width of 88. So it should not be
+        # wrapped.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+        return 5
+
+      self.x = doit(5)
+  ```
+
+      Done.
+  """
+  pass
+
+
+# Like unindented, but contains a `print` line where it just barely exceeds the
+# globally configured line width *after* its indentation has been corrected.
+def unindented_barely_exceeds_limit():
+  """
+      First line.
+
+  ```py
+  class Abcdefghijklmopqrstuvwxyz(
+    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+  ):
+    def abcdefghijklmnopqrstuvwxyz(
+      self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+    ):
+      def abcdefghijklmnopqrstuvwxyz(
+        abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+      ):
+        # For 4 space indents, this is 89 columns, which is one
+        # more than the limit. Therefore, it should get wrapped for
+        # indent_width >= 4.
+        print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678)
+        return 5
+
+      self.x = doit(5)
+  ```
+
+      Done.
+  """
+  pass
+```
+
+
+### Output 3
+```
+indent-style               = tab
+line-width                 = 88
+indent-width               = 4
+quote-style                = Double
+line-ending                = LineFeed
+magic-trailing-comma       = Respect
+docstring-code             = Enabled
+docstring-code-line-width  = "dynamic"
+preview                    = Disabled
+```
+
+```python
+def simple():
+	"""
+	First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	    def abcdefghijklmnopqrstuvwxyz(
+	        self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	    ):
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+	```
+
+	Done.
+	"""
+	pass
+
+
+# Like simple, but we double everything up to ensure the indent level is
+# tracked correctly.
+def repeated():
+	"""
+	First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	    def abcdefghijklmnopqrstuvwxyz(
+	        self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	    ):
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+
+	    def abcdefghijklmnopqrstuvwxyz(
+	        self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	    ):
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+
+
+	class Abcdefghijklmopqrstuvwxyz(
+	    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	    def abcdefghijklmnopqrstuvwxyz(
+	        self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	    ):
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+
+	    def abcdefghijklmnopqrstuvwxyz(
+	        self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	    ):
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+	```
+
+	Done.
+	"""
+	pass
+
+
+# Like simple, but we make one line exactly one character longer than the limit
+# (for 4-space indents) and make sure it gets wrapped.
+def barely_exceeds_limit():
+	"""
+	First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	    def abcdefghijklmnopqrstuvwxyz(
+	        self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	    ):
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is 89 columns, which is one
+	            # more than the limit. Therefore, it should get wrapped for
+	            # indent_width >= 4.
+	            print(
+	                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678
+	            )
+	            return 5
+
+	        self.x = doit(5)
+	```
+
+	Done.
+	"""
+	pass
+
+
+# This tests that if the code block is unindented, that it gets indented and
+# the dynamic line width setting is applied correctly.
+def unindented():
+	"""
+	    First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	    def abcdefghijklmnopqrstuvwxyz(
+	        self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	    ):
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is just one character shy of
+	            # tripping the default line width of 88. So it should not be
+	            # wrapped.
+	            print(abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a567)
+	            return 5
+
+	        self.x = doit(5)
+	```
+
+	    Done.
+	"""
+	pass
+
+
+# Like unindented, but contains a `print` line where it just barely exceeds the
+# globally configured line width *after* its indentation has been corrected.
+def unindented_barely_exceeds_limit():
+	"""
+	    First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	    Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	    def abcdefghijklmnopqrstuvwxyz(
+	        self, abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	    ):
+	        def abcdefghijklmnopqrstuvwxyz(
+	            abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4
+	        ):
+	            # For 4 space indents, this is 89 columns, which is one
+	            # more than the limit. Therefore, it should get wrapped for
+	            # indent_width >= 4.
+	            print(
+	                abc, ddef, ghi, jkl, mno, pqr, stu, vwx, yz, a1, a2, a3, a4, a5678
+	            )
+	            return 5
+
+	        self.x = doit(5)
+	```
+
+	    Done.
+	"""
+	pass
+```
+
+
+### Output 4
+```
+indent-style               = tab
+line-width                 = 88
+indent-width               = 8
+quote-style                = Double
+line-ending                = LineFeed
+magic-trailing-comma       = Respect
+docstring-code             = Enabled
+docstring-code-line-width  = "dynamic"
+preview                    = Disabled
+```
+
+```python
+def simple():
+	"""
+	First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	        def abcdefghijklmnopqrstuvwxyz(
+	                self,
+	                abc,
+	                ddef,
+	                ghi,
+	                jkl,
+	                mno,
+	                pqr,
+	                stu,
+	                vwx,
+	                yz,
+	                a1,
+	                a2,
+	                a3,
+	                a4,
+	        ):
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+	```
+
+	Done.
+	"""
+	pass
+
+
+# Like simple, but we double everything up to ensure the indent level is
+# tracked correctly.
+def repeated():
+	"""
+	First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	        def abcdefghijklmnopqrstuvwxyz(
+	                self,
+	                abc,
+	                ddef,
+	                ghi,
+	                jkl,
+	                mno,
+	                pqr,
+	                stu,
+	                vwx,
+	                yz,
+	                a1,
+	                a2,
+	                a3,
+	                a4,
+	        ):
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+
+	        def abcdefghijklmnopqrstuvwxyz(
+	                self,
+	                abc,
+	                ddef,
+	                ghi,
+	                jkl,
+	                mno,
+	                pqr,
+	                stu,
+	                vwx,
+	                yz,
+	                a1,
+	                a2,
+	                a3,
+	                a4,
+	        ):
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+
+
+	class Abcdefghijklmopqrstuvwxyz(
+	        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	        def abcdefghijklmnopqrstuvwxyz(
+	                self,
+	                abc,
+	                ddef,
+	                ghi,
+	                jkl,
+	                mno,
+	                pqr,
+	                stu,
+	                vwx,
+	                yz,
+	                a1,
+	                a2,
+	                a3,
+	                a4,
+	        ):
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+
+	        def abcdefghijklmnopqrstuvwxyz(
+	                self,
+	                abc,
+	                ddef,
+	                ghi,
+	                jkl,
+	                mno,
+	                pqr,
+	                stu,
+	                vwx,
+	                yz,
+	                a1,
+	                a2,
+	                a3,
+	                a4,
+	        ):
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+	```
+
+	Done.
+	"""
+	pass
+
+
+# Like simple, but we make one line exactly one character longer than the limit
+# (for 4-space indents) and make sure it gets wrapped.
+def barely_exceeds_limit():
+	"""
+	First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	        def abcdefghijklmnopqrstuvwxyz(
+	                self,
+	                abc,
+	                ddef,
+	                ghi,
+	                jkl,
+	                mno,
+	                pqr,
+	                stu,
+	                vwx,
+	                yz,
+	                a1,
+	                a2,
+	                a3,
+	                a4,
+	        ):
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is 89 columns, which is one
+	                        # more than the limit. Therefore, it should get wrapped for
+	                        # indent_width >= 4.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a5678,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+	```
+
+	Done.
+	"""
+	pass
+
+
+# This tests that if the code block is unindented, that it gets indented and
+# the dynamic line width setting is applied correctly.
+def unindented():
+	"""
+	    First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	        def abcdefghijklmnopqrstuvwxyz(
+	                self,
+	                abc,
+	                ddef,
+	                ghi,
+	                jkl,
+	                mno,
+	                pqr,
+	                stu,
+	                vwx,
+	                yz,
+	                a1,
+	                a2,
+	                a3,
+	                a4,
+	        ):
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is just one character shy of
+	                        # tripping the default line width of 88. So it should not be
+	                        # wrapped.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a567,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+	```
+
+	    Done.
+	"""
+	pass
+
+
+# Like unindented, but contains a `print` line where it just barely exceeds the
+# globally configured line width *after* its indentation has been corrected.
+def unindented_barely_exceeds_limit():
+	"""
+	    First line.
+
+	```py
+	class Abcdefghijklmopqrstuvwxyz(
+	        Abc, Def, Ghi, Jkl, Mno, Pqr, Stu, Vwx, Yz, A1, A2, A3, A4, A5
+	):
+	        def abcdefghijklmnopqrstuvwxyz(
+	                self,
+	                abc,
+	                ddef,
+	                ghi,
+	                jkl,
+	                mno,
+	                pqr,
+	                stu,
+	                vwx,
+	                yz,
+	                a1,
+	                a2,
+	                a3,
+	                a4,
+	        ):
+	                def abcdefghijklmnopqrstuvwxyz(
+	                        abc,
+	                        ddef,
+	                        ghi,
+	                        jkl,
+	                        mno,
+	                        pqr,
+	                        stu,
+	                        vwx,
+	                        yz,
+	                        a1,
+	                        a2,
+	                        a3,
+	                        a4,
+	                ):
+	                        # For 4 space indents, this is 89 columns, which is one
+	                        # more than the limit. Therefore, it should get wrapped for
+	                        # indent_width >= 4.
+	                        print(
+	                                abc,
+	                                ddef,
+	                                ghi,
+	                                jkl,
+	                                mno,
+	                                pqr,
+	                                stu,
+	                                vwx,
+	                                yz,
+	                                a1,
+	                                a2,
+	                                a3,
+	                                a4,
+	                                a5678,
+	                        )
+	                        return 5
+
+	                self.x = doit(5)
+	```
+
+	    Done.
+	"""
+	pass
+```
+
+
+