Split over-long comprehensions after in

crates/ruff_python_formatter/src/other/comprehension.rs

@@ -84,13 +84,13 @@ impl FormatNodeRule<Comprehension> for FormatComprehension {
         let (trailing_in_comments, dangling_if_comments) = dangling_comments
             .split_at(dangling_comments.partition_point(|comment| comment.start() < iter.start()));
 
-        let in_spacer = format_with(|f| {
+        // let in_spacer = format_with(|f| {
-            if before_in_comments.is_empty() {
+        //     // if before_in_comments.is_empty() {
-                space().fmt(f)
+        //     //     space().fmt(f)
-            } else {
+        //     // } else {
-                soft_line_break_or_space().fmt(f)
+        //     soft_line_break_or_space().fmt(f)
-            }
+        //     // }
-        });
+        // });
 
         write!(
             f,
@@ -101,10 +101,12 @@ impl FormatNodeRule<Comprehension> for FormatComprehension {
                     expression: target,
                     preserve_parentheses: !target.is_tuple_expr()
                 },
-                ExprTupleWithoutParentheses(target),
+                group(&format_args![
-                in_spacer,
+                    ExprTupleWithoutParentheses(target),
-                leading_comments(before_in_comments),
+                    soft_line_break_or_space(),
-                token("in"),
+                    leading_comments(before_in_comments),
+                    token("in"),
+                ]),
                 trailing_comments(trailing_in_comments),
                 Spacer {
                     expression: iter,

crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__expression.py.snap

@@ -266,7 +266,17 @@ last_call()
 ```diff
 --- Black
 +++ Ruff
-@@ -115,7 +115,7 @@
+@@ -101,7 +101,8 @@
+ {a: b * -2 for a, b in dictionary.items()}
+ {
+     k: v
+-    for k, v in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension
++    for k, v
++    in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension
+ }
+ Python3 > Python2 > COBOL
+ Life is Life
+@@ -115,7 +116,7 @@
      arg,
      another,
      kwarg="hey",
@@ -383,7 +393,8 @@ str or None if (1 if True else 2) else str or bytes or None
 {a: b * -2 for a, b in dictionary.items()}
 {
     k: v
-    for k, v in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension
+    for k, v
+    in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension
 }
 Python3 > Python2 > COBOL
 Life is Life
@@ -1028,5 +1039,3 @@ bbbb >> bbbb * bbbb
 last_call()
 # standalone comment at ENDMARKER
 ```
-
-

crates/ruff_python_formatter/tests/snapshots/black_compatibility@cases__preview_hug_parens_with_braces_and_square_brackets.py.snap

@@ -373,7 +373,7 @@ for foo in ["a", "b"]:
  
  func(
      [
-@@ -114,13 +140,15 @@
+@@ -114,13 +140,16 @@
  func(
      [x for x in "long line long line long line long line long line long line long line"]
  )
@@ -386,7 +386,8 @@ for foo in ["a", "b"]:
 -        for x in "long line long line long line long line long line long line long line"
 +        for x in [
 +            x
-+            for x in "long line long line long line long line long line long line long line"
++            for x
++            in "long line long line long line long line long line long line long line"
 +        ]
      ]
 -])
@@ -394,7 +395,7 @@ for foo in ["a", "b"]:
  
  foooooooooooooooooooo(
      [{c: n + 1 for c in range(256)} for n in range(100)] + [{}], {size}
-@@ -131,10 +159,12 @@
+@@ -131,10 +160,12 @@
  )
  
  nested_mapping = {
@@ -411,7 +412,7 @@ for foo in ["a", "b"]:
  }
  explicit_exploding = [
      [
-@@ -144,24 +174,34 @@
+@@ -144,24 +175,34 @@
          ],
      ],
  ]
@@ -461,7 +462,7 @@ for foo in ["a", "b"]:
  
  # Edge case when deciding whether to hug the brackets without inner content.
  very_very_very_long_variable = very_very_very_long_module.VeryVeryVeryVeryLongClassName(
-@@ -169,11 +209,13 @@
+@@ -169,11 +210,14 @@
  )
  
  for foo in ["a", "b"]:
@@ -478,7 +479,8 @@ for foo in ["a", "b"]:
 +            individual
 +            for
 +            # Foobar
-+            container in xs_by_y[foo]
++            container
++            in xs_by_y[foo]
 +            # Foobar
 +            for individual in container["nested"]
 +        ]
@@ -635,7 +637,8 @@ func(
         x
         for x in [
             x
-            for x in "long line long line long line long line long line long line long line"
+            for x
+            in "long line long line long line long line long line long line long line"
         ]
     ]
 )
@@ -704,7 +707,8 @@ for foo in ["a", "b"]:
             individual
             for
             # Foobar
-            container in xs_by_y[foo]
+            container
+            in xs_by_y[foo]
             # Foobar
             for individual in container["nested"]
         ]

crates/ruff_python_formatter/tests/snapshots/format@expression__dict_comp.py.snap

@@ -198,7 +198,8 @@ query = {
 
 {
     a: a  # a
-    for c in e  # for  # c  # in  # e
+    for c  # for  # c
+    in e  # in  # e
 }
 
 {
@@ -232,7 +233,8 @@ query = {
     for ccccccccccccccccccccccccccccccccccccccc, ddddddddddddddddddd, [
         eeeeeeeeeeeeeeeeeeeeee,
         fffffffffffffffffffffffff,
-    ] in eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeffffffffffffffffffffffffggggggggggggggggggggghhhhhhhhhhhhhhothermoreeand_even_moreddddddddddddddddddddd
+    ]
+    in eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeffffffffffffffffffffffffggggggggggggggggggggghhhhhhhhhhhhhhothermoreeand_even_moreddddddddddddddddddddd
     if fffffffffffffffffffffffffffffffffffffffffff
     < gggggggggggggggggggggggggggggggggggggggggggggg
     < hhhhhhhhhhhhhhhhhhhhhhhhhh
@@ -263,7 +265,8 @@ query = {
         a,
         a,
         a,
-    ] in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension
+    ]
+    in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension
 }
 {
     k: v
@@ -288,7 +291,8 @@ query = {
         a,
         a,
         a,
-    ) in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension
+    )
+    in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension
 }
 
 # Leading
@@ -315,7 +319,8 @@ query = {
         a,
         a,
         a,  # Trailing
-    ) in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension  # Trailing
+    )
+    in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension  # Trailing
 }  # Trailing
 # Trailing
 
@@ -336,7 +341,8 @@ selected_choices = {
     for (  # foo
         x,
         aaaayaaaayaaaayaaaayaaaayaaaayaaaayaaaayaaaayaaaayaaaayaaaayaaaayaaaay,
-    ) in z
+    )
+    in z
 }
 
 a = {
@@ -403,6 +409,3 @@ query = {
     for key, queries in self._filters.items()
 }
 ```
-
-
-

crates/ruff_python_formatter/tests/snapshots/format@expression__list_comp.py.snap

@@ -189,7 +189,8 @@ y = [
 
 [
     a  # a
-    for c in e  # for  # c  # in  # e
+    for c  # for  # c
+    in e  # in  # e
 ]
 
 [
@@ -220,7 +221,8 @@ y = [
     for ccccccccccccccccccccccccccccccccccccccc, ddddddddddddddddddd, [
         eeeeeeeeeeeeeeeeeeeeee,
         fffffffffffffffffffffffff,
-    ] in eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeffffffffffffffffffffffffggggggggggggggggggggghhhhhhhhhhhhhhothermoreeand_even_moreddddddddddddddddddddd
+    ]
+    in eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeffffffffffffffffffffffffggggggggggggggggggggghhhhhhhhhhhhhhothermoreeand_even_moreddddddddddddddddddddd
     if fffffffffffffffffffffffffffffffffffffffffff
     < gggggggggggggggggggggggggggggggggggggggggggggg
     < hhhhhhhhhhhhhhhhhhhhhhhhhh
@@ -304,7 +306,8 @@ aaaaaaaaaaaaaaaaaaaaa = [
     for (
         x,
         y,
-    ) in z
+    )
+    in z
     if head_name
 ]
 
@@ -326,7 +329,8 @@ y = [
     (
         # comment
         a
-    ) in
+    )
+    in
     (
         # comment
         x
@@ -350,7 +354,8 @@ y = [
     a
     for
     # comment
-    a, b in x
+    a, b
+    in x
     if True
 ]
 
@@ -361,7 +366,8 @@ y = [
         # comment
         a,
         b,
-    ) in x
+    )
+    in x
     if True
 ]
 
@@ -370,7 +376,8 @@ y = [
     a
     for
     # comment
-    a in
+    a
+    in
     # comment
     x
     if
@@ -388,7 +395,7 @@ y = [
 ```diff
 --- Stable
 +++ Preview
-@@ -142,24 +142,20 @@
+@@ -145,25 +145,21 @@
  # Leading expression comments:
  y = [
      a
@@ -397,9 +404,10 @@ y = [
 +    for (
          # comment
          a
--    ) in
+     )
+-    in
 -    (
-+    ) in (
++    in (
          # comment
          x
      )

crates/ruff_python_formatter/tests/snapshots/format@expression__set_comp.py.snap

@@ -74,7 +74,8 @@ selected_choices = {
 
 {
     a  # a
-    for c in e  # for  # c  # in  # e
+    for c  # for  # c
+    in e  # in  # e
 }
 
 {
@@ -105,7 +106,8 @@ selected_choices = {
     for ccccccccccccccccccccccccccccccccccccccc, ddddddddddddddddddd, [
         eeeeeeeeeeeeeeeeeeeeee,
         fffffffffffffffffffffffff,
-    ] in eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeffffffffffffffffffffffffggggggggggggggggggggghhhhhhhhhhhhhhothermoreeand_even_moreddddddddddddddddddddd
+    ]
+    in eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeffffffffffffffffffffffffggggggggggggggggggggghhhhhhhhhhhhhhothermoreeand_even_moreddddddddddddddddddddd
     if fffffffffffffffffffffffffffffffffffffffffff
     < gggggggggggggggggggggggggggggggggggggggggggggg
     < hhhhhhhhhhhhhhhhhhhhhhhhhh
@@ -123,6 +125,3 @@ selected_choices = {
     if str(v) not in self.choices.field.empty_values
 }
 ```
-
-
-