diff --git a/malva/src/doc_gen/at_rule/custom_selector.rs b/malva/src/doc_gen/at_rule/custom_selector.rs
index 53468bb..71505d0 100644
--- a/malva/src/doc_gen/at_rule/custom_selector.rs
+++ b/malva/src/doc_gen/at_rule/custom_selector.rs
@@ -31,12 +31,11 @@ impl<'s> DocGen<'s> for CustomSelectorArg<'s> {
 impl<'s> DocGen<'s> for CustomSelectorArgs<'s> {
     fn doc(&self, ctx: &Ctx<'_, 's>) -> Doc<'s> {
         helpers::format_parenthesized(
-            helpers::SeparatedListFormatter::new(",", Doc::line_or_space()).format(
-                &self.args,
-                &self.comma_spans,
-                self.span.start,
-                ctx,
-            ),
+            helpers::SeparatedListFormatter::new(
+                ",",
+                helpers::get_smart_linebreak(self.span.start, &self.args, ctx),
+            )
+            .format(&self.args, &self.comma_spans, self.span.start, ctx),
             self.args
                 .last()
                 .map(|arg| arg.span.end)
diff --git a/malva/src/doc_gen/helpers.rs b/malva/src/doc_gen/helpers.rs
index 2960136..2aa55cb 100644
--- a/malva/src/doc_gen/helpers.rs
+++ b/malva/src/doc_gen/helpers.rs
@@ -262,3 +262,19 @@ pub(super) fn ident_to_lowercase<'s>(
         name => name.doc(ctx),
     }
 }
+
+pub(super) fn get_smart_linebreak<'s, N>(
+    start: usize,
+    elements: &[N],
+    ctx: &Ctx<'_, 's>,
+) -> Doc<'static>
+where
+    N: Spanned,
+{
+    match elements.first() {
+        Some(element) if ctx.line_bounds.line_distance(start, element.span().start) > 0 => {
+            Doc::hard_line()
+        }
+        _ => Doc::line_or_space(),
+    }
+}
diff --git a/malva/src/doc_gen/less.rs b/malva/src/doc_gen/less.rs
index 506800e..bc7b0f4 100644
--- a/malva/src/doc_gen/less.rs
+++ b/malva/src/doc_gen/less.rs
@@ -178,9 +178,12 @@ impl<'s> DocGen<'s> for LessFormatFunction {
 impl<'s> DocGen<'s> for LessImportOptions<'s> {
     fn doc(&self, ctx: &Ctx<'_, 's>) -> Doc<'s> {
         helpers::format_parenthesized(
-            helpers::SeparatedListFormatter::new(",", Doc::line_or_space())
-                .with_trailing()
-                .format(&self.names, &self.comma_spans, self.span.start, ctx),
+            helpers::SeparatedListFormatter::new(
+                ",",
+                helpers::get_smart_linebreak(self.span.start, &self.names, ctx),
+            )
+            .with_trailing()
+            .format(&self.names, &self.comma_spans, self.span.start, ctx),
             self.names
                 .last()
                 .map(|name| name.span.end)
@@ -382,7 +385,7 @@ impl<'s> DocGen<'s> for LessMixinArguments<'s> {
                     .append(
                         helpers::SeparatedListFormatter::new(
                             if self.is_comma_separated { "," } else { ";" },
-                            Doc::line_or_space(),
+                            helpers::get_smart_linebreak(self.span.start, &self.args, ctx),
                         )
                         .with_trailing()
                         .format(
@@ -556,7 +559,7 @@ impl<'s> DocGen<'s> for LessMixinParameters<'s> {
         helpers::format_parenthesized(
             helpers::SeparatedListFormatter::new(
                 if self.is_comma_separated { "," } else { ";" },
-                Doc::line_or_space(),
+                helpers::get_smart_linebreak(self.span.start, &self.params, ctx),
             )
             .with_trailing()
             .format(&self.params, &self.separator_spans, self.span.start, ctx),
diff --git a/malva/src/doc_gen/sass.rs b/malva/src/doc_gen/sass.rs
index 26c538e..ccfaa18 100644
--- a/malva/src/doc_gen/sass.rs
+++ b/malva/src/doc_gen/sass.rs
@@ -135,9 +135,12 @@ impl<'s> DocGen<'s> for SassConditionalClause<'s> {
 impl<'s> DocGen<'s> for SassContent<'s> {
     fn doc(&self, ctx: &Ctx<'_, 's>) -> Doc<'s> {
         helpers::format_parenthesized(
-            helpers::SeparatedListFormatter::new(",", Doc::line_or_space())
-                .with_trailing()
-                .format(&self.args, &self.comma_spans, self.span.start, ctx),
+            helpers::SeparatedListFormatter::new(
+                ",",
+                helpers::get_smart_linebreak(self.span.start, &self.args, ctx),
+            )
+            .with_trailing()
+            .format(&self.args, &self.comma_spans, self.span.start, ctx),
             self.args
                 .len()
                 .checked_sub(1)
@@ -409,9 +412,12 @@ impl<'s> DocGen<'s> for SassInclude<'s> {
 impl<'s> DocGen<'s> for SassIncludeArgs<'s> {
     fn doc(&self, ctx: &Ctx<'_, 's>) -> Doc<'s> {
         helpers::format_parenthesized(
-            helpers::SeparatedListFormatter::new(",", Doc::line_or_space())
-                .with_trailing()
-                .format(&self.args, &self.comma_spans, self.span.start, ctx),
+            helpers::SeparatedListFormatter::new(
+                ",",
+                helpers::get_smart_linebreak(self.span.start, &self.args, ctx),
+            )
+            .with_trailing()
+            .format(&self.args, &self.comma_spans, self.span.start, ctx),
             self.args
                 .len()
                 .checked_sub(1)
@@ -576,9 +582,12 @@ impl<'s> DocGen<'s> for SassList<'s> {
 impl<'s> DocGen<'s> for SassMap<'s> {
     fn doc(&self, ctx: &Ctx<'_, 's>) -> Doc<'s> {
         helpers::format_parenthesized(
-            helpers::SeparatedListFormatter::new(",", Doc::line_or_space())
-                .with_trailing()
-                .format(&self.items, &self.comma_spans, self.span.start, ctx),
+            helpers::SeparatedListFormatter::new(
+                ",",
+                helpers::get_smart_linebreak(self.span.start, &self.items, ctx),
+            )
+            .with_trailing()
+            .format(&self.items, &self.comma_spans, self.span.start, ctx),
             self.items
                 .last()
                 .map(|item| item.span.end)
@@ -616,9 +625,12 @@ impl<'s> DocGen<'s> for SassModuleConfig<'s> {
         Doc::text("with ")
             .concat(ctx.end_spaced_comments(self.with_span.end, self.lparen_span.start))
             .append(helpers::format_parenthesized(
-                helpers::SeparatedListFormatter::new(",", Doc::line_or_space())
-                    .with_trailing()
-                    .format(&self.items, &self.comma_spans, self.lparen_span.end, ctx),
+                helpers::SeparatedListFormatter::new(
+                    ",",
+                    helpers::get_smart_linebreak(self.span.start, &self.items, ctx),
+                )
+                .with_trailing()
+                .format(&self.items, &self.comma_spans, self.lparen_span.end, ctx),
                 self.items
                     .last()
                     .map(|item| item.span.end)
@@ -727,9 +739,12 @@ impl<'s> DocGen<'s> for SassParameters<'s> {
             )
             .collect::<Vec<_>>();
         helpers::format_parenthesized(
-            helpers::SeparatedListFormatter::new(",", Doc::line_or_space())
-                .with_trailing()
-                .format(&params, &self.comma_spans, self.span.start, ctx),
+            helpers::SeparatedListFormatter::new(
+                ",",
+                helpers::get_smart_linebreak(self.span.start, &params, ctx),
+            )
+            .with_trailing()
+            .format(&params, &self.comma_spans, self.span.start, ctx),
             self.params
                 .len()
                 .checked_sub(1)
diff --git a/malva/tests/fmt/scss/at-rule/each.snap b/malva/tests/fmt/scss/at-rule/each.snap
index cc64362..b05906c 100644
--- a/malva/tests/fmt/scss/at-rule/each.snap
+++ b/malva/tests/fmt/scss/at-rule/each.snap
@@ -31,6 +31,21 @@ source: malva/tests/fmt.rs
 @each $element, $size in (h1: 20px, h2: 16px, h3: 14px) {}
 @each $element, $size in (h1: 20px, h2: 16px, h3: 14px) {}
 @each $element, $size in (h1: 20px, h2: 16px, h3: 14px) {}
-@each $element, $size in (h1: 20px, h2: 16px, h3: 14px) {}
-@each $element, $size in (h1: 20px, h2: 16px, h3: 14px) {}
-@each $element, $size in (h1: 20px, h2: 16px, h3: 14px) {}
+@each $element, $size in
+  (
+  h1: 20px,
+  h2: 16px,
+  h3: 14px
+) {}
+@each $element, $size in
+  (
+  h1: 20px,
+  h2: 16px,
+  h3: 14px
+) {}
+@each $element, $size in
+  (
+  h1: 20px,
+  h2: 16px,
+  h3: 14px
+) {}
diff --git a/malva/tests/fmt/scss/at-rule/function.snap b/malva/tests/fmt/scss/at-rule/function.snap
index 9698796..b0eeead 100644
--- a/malva/tests/fmt/scss/at-rule/function.snap
+++ b/malva/tests/fmt/scss/at-rule/function.snap
@@ -13,16 +13,36 @@ source: malva/tests/fmt.rs
 @function func($arg, $arg1, $arg2: 10, $args...) {
   @return "Func";
 }
-@function func($arg, $arg1, $arg2: 10, $args...) {
+@function func(
+  $arg,
+  $arg1,
+  $arg2: 10,
+  $args...
+) {
   @return "Func";
 }
-@function func($arg, $arg1, $arg2: 10, $args...) {
+@function func(
+  $arg,
+  $arg1,
+  $arg2: 10,
+  $args...
+) {
   @return "Func";
 }
-@function func($arg, $arg1, $arg2: 10, $args...) {
+@function func(
+  $arg,
+  $arg1,
+  $arg2: 10,
+  $args...
+) {
   @return "Func";
 }
-@function func($arg, $arg1, $arg2: 10, $args...) {
+@function func(
+  $arg,
+  $arg1,
+  $arg2: 10,
+  $args...
+) {
   @return "Func";
 }
 @function func(
diff --git a/malva/tests/fmt/scss/at-rule/include.snap b/malva/tests/fmt/scss/at-rule/include.snap
index 4005a00..cb6b2ae 100644
--- a/malva/tests/fmt/scss/at-rule/include.snap
+++ b/malva/tests/fmt/scss/at-rule/include.snap
@@ -5,11 +5,31 @@ source: malva/tests/fmt.rs
 @include mix(1px, 2px, $arg2: 10, 2px 4px 6px);
 @include mix(1px, 2px, $arg2: 10, 2px 4px 6px);
 @include mix(1px, 2px, $arg2: 10, 2px 4px 6px);
-@include mix(1px, 2px, $arg2: 10, 2px 4px 6px);
-@include mix(1px, 2px, $arg2: 10, 2px 4px 6px);
-@include mix(1px, 2px, $arg2: 10, 2px 4px 6px);
+@include mix(
+  1px,
+  2px,
+  $arg2: 10,
+  2px 4px 6px
+);
+@include mix(
+  1px,
+  2px,
+  $arg2: 10,
+  2px 4px 6px
+);
+@include mix(
+  1px,
+  2px,
+  $arg2: 10,
+  2px 4px 6px
+);
 
-@include mix(1px, 2px, $arg2: 10, 2px 4px 6px);
+@include mix(
+  1px,
+  2px,
+  $arg2: 10,
+  2px 4px 6px
+);
 
 @include mix(
   $very-very-very-very-very-very-very-very-very-very-very-very-very-very-long-arg: 1px,
@@ -61,7 +81,10 @@ a {
 a {
   @include item-spotlight-properties-transition(
     "-title",
-    (box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15), border-color: $brand-primary)
+    (
+      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15),
+      border-color: $brand-primary
+    )
   );
 }
 
diff --git a/malva/tests/fmt/scss/at-rule/mixin.snap b/malva/tests/fmt/scss/at-rule/mixin.snap
index 50f214d..8e0c33b 100644
--- a/malva/tests/fmt/scss/at-rule/mixin.snap
+++ b/malva/tests/fmt/scss/at-rule/mixin.snap
@@ -13,10 +13,30 @@ source: malva/tests/fmt.rs
 @mixin mix($arg, $arg1, $arg2: 10, $args...) {}
 @mixin mix($arg, $arg1, $arg2: 10, $args...) {}
 @mixin mix($arg, $arg1, $arg2: 10, $args...) {}
-@mixin mix($arg, $arg1, $arg2: 10, $args...) {}
-@mixin mix($arg, $arg1, $arg2: 10, $args...) {}
-@mixin mix($arg, $arg1, $arg2: 10, $args...) {}
-@mixin mix($arg, $arg1, $arg2: 10, $args...) {}
+@mixin mix(
+  $arg,
+  $arg1,
+  $arg2: 10,
+  $args...
+) {}
+@mixin mix(
+  $arg,
+  $arg1,
+  $arg2: 10,
+  $args...
+) {}
+@mixin mix(
+  $arg,
+  $arg1,
+  $arg2: 10,
+  $args...
+) {}
+@mixin mix(
+  $arg,
+  $arg1,
+  $arg2: 10,
+  $args...
+) {}
 @mixin mix(
   $very-very-very-very-very-very-very-very-very-very-very-very-very-very-long-arg,
   $very-very-very-very-very-very-very-very-very-very-very-very-very-very-long-arg1,
diff --git a/malva/tests/fmt/scss/configuration/use.snap b/malva/tests/fmt/scss/configuration/use.snap
index 4c43ea3..b46a573 100644
--- a/malva/tests/fmt/scss/configuration/use.snap
+++ b/malva/tests/fmt/scss/configuration/use.snap
@@ -9,4 +9,7 @@ source: malva/tests/fmt.rs
   $h3-font-weight: 500
 );
 
-@use "library" with ($black: #222, $border-radius: 0.1rem);
+@use "library" with (
+  $black: #222,
+  $border-radius: 0.1rem
+);
diff --git a/malva/tests/fmt/scss/ignore/default.snap b/malva/tests/fmt/scss/ignore/default.snap
index b4f4927..9a08b95 100644
--- a/malva/tests/fmt/scss/ignore/default.snap
+++ b/malva/tests/fmt/scss/ignore/default.snap
@@ -39,4 +39,7 @@ a, b {}
 // malva-ignore-will-not-apply
 a, b {}
 
-$size: (sm: 16px, md: 24px);
+$size: (
+  sm: 16px,
+  md: 24px
+);
diff --git a/malva/tests/fmt/scss/parens/2.snap b/malva/tests/fmt/scss/parens/2.snap
index b7bd130..b1ff344 100644
--- a/malva/tests/fmt/scss/parens/2.snap
+++ b/malva/tests/fmt/scss/parens/2.snap
@@ -2,6 +2,12 @@
 source: malva/tests/fmt.rs
 ---
 $icons: (
-  cal-day-group: (left: 253, top: 73),
-  /* Should preserve empty lines */ cal-week-group: (left: 1, top: 169)
+  cal-day-group: (
+    left: 253,
+    top: 73
+  ),
+  /* Should preserve empty lines */ cal-week-group: (
+    left: 1,
+    top: 169
+  )
 );
diff --git a/malva/tests/fmt/scss/scss/arbitrary-arguments.snap b/malva/tests/fmt/scss/scss/arbitrary-arguments.snap
index 8cb5828..c2c927a 100644
--- a/malva/tests/fmt/scss/scss/arbitrary-arguments.snap
+++ b/malva/tests/fmt/scss/scss/arbitrary-arguments.snap
@@ -26,7 +26,11 @@ $form-selectors: "input.name", "input.address", "input.zip" !default;
   background-color: nth($gradients, 1);
   background-image: linear-gradient($direction, $gradients...);
 }
-$parameters: ("c": "kittens", "a": true, "b": 42);
+$parameters: (
+  "c": "kittens",
+  "a": true,
+  "b": 42
+);
 $value: dummy($parameters...);
 
 body {
diff --git a/malva/tests/fmt/scss/scss/scss.snap b/malva/tests/fmt/scss/scss/scss.snap
index 89c2f5f..5b7f586 100644
--- a/malva/tests/fmt/scss/scss/scss.snap
+++ b/malva/tests/fmt/scss/scss/scss.snap
@@ -47,10 +47,22 @@ $map: (key: value, other-key: other-value) !default;
 $map: (key: value, other-key: other-value) !default;
 $map: (key: value, other-key: other-value);
 $map: (key: value, other-key: other-value);
-$map: (key: value, other-key: other-value);
-$map: (key: value, other-key: other-value);
-$map: (key: value, other-key: other-value);
-$map: (key: value, other-key: other-value);
+$map: (
+  key: value,
+  other-key: other-value
+);
+$map: (
+  key: value,
+  other-key: other-value
+);
+$map: (
+  key: value,
+  other-key: other-value
+);
+$map: (
+  key: value,
+  other-key: other-value
+);
 $map: (
   very-very-very-very-very-very-very-very-very-very-very-very-very-very-very-verylong-key: very-very-very-very-very-very-very-very-very-very-very-very-very-very-very-verylong-value,
   very-very-very-very-very-very-very-very-very-very-very-very-very-very-very-verylong-other-key: very-very-very-very-very-very-very-very-very-very-very-very-very-very-very-verylong-other-value
@@ -681,9 +693,21 @@ $extmods: (eot: "?", svg: "#" + str-replace($name, " ", "_"));
 }
 
 $colors: (
-  primary: (base: #00abc9, light: #daf1f6, dark: #12799a),
-  secondary: (base: #424d55, light: #ccc, lightest: #efefef, dark: #404247),
-  success: (base: #bbd33e, light: #eaf0c6)
+  primary: (
+    base: #00abc9,
+    light: #daf1f6,
+    dark: #12799a
+  ),
+  secondary: (
+    base: #424d55,
+    light: #ccc,
+    lightest: #efefef,
+    dark: #404247
+  ),
+  success: (
+    base: #bbd33e,
+    light: #eaf0c6
+  )
 );
 
 @function color($color, $tone: "base") {
@@ -733,7 +757,12 @@ $o-grid-default-config: (
   gutter: 10px,
   min-width: 240px,
   max-width: 1330px,
-  layouts: (S: 370px, M: 610px, L: 850px, XL: 1090px),
+  layouts: (
+    S: 370px,
+    M: 610px,
+    L: 850px,
+    XL: 1090px
+  ),
   fluid: true,
   debug: false,
   fixed-layout: M,
@@ -748,7 +777,10 @@ $d: (null);
 $threads-properties: map-merge($threads-properties, ($border-label: ()));
 $o-grid-default-config: (layouts: (S: 370px));
 
-$map: (key: (value), other-key: (key: other-other-value));
+$map: (
+  key: (value),
+  other-key: (key: other-other-value)
+);
 
 a {
   content: "#{".5"}";
diff --git a/malva/tests/fmt/scss/trailing-comma/at-rules.snap b/malva/tests/fmt/scss/trailing-comma/at-rules.snap
index 57d9850..d5910bf 100644
--- a/malva/tests/fmt/scss/trailing-comma/at-rules.snap
+++ b/malva/tests/fmt/scss/trailing-comma/at-rules.snap
@@ -3,7 +3,10 @@ source: malva/tests/fmt.rs
 ---
 a {
   @include section-type-1(
-    $header: (margin: 0 0 $margin-base, text-align: left),
+    $header: (
+      margin: 0 0 $margin-base,
+      text-align: left
+    ),
     $decoration: (
       type: base,
       margin: 0 auto -1px 0,
diff --git a/malva/tests/fmt/scss/trailing-comma/enabled.snap b/malva/tests/fmt/scss/trailing-comma/enabled.snap
index 5b85f7d..e4db5da 100644
--- a/malva/tests/fmt/scss/trailing-comma/enabled.snap
+++ b/malva/tests/fmt/scss/trailing-comma/enabled.snap
@@ -3,7 +3,10 @@ source: malva/tests/fmt.rs
 ---
 /*cfg trailingComma = true*/
 @include section-type-1(
-  $header: (margin: 0 0 $margin-base, text-align: left),
+  $header: (
+    margin: 0 0 $margin-base,
+    text-align: left,
+  ),
   $decoration: (
     type: base,
     margin: 0 auto -1px 0,
@@ -25,8 +28,16 @@ $list: ("Helvetica", "Arial", sans-serif);
 $colors: ("red", "blue");
 $config: (
   themes: (
-    mist: (header: #dcfac0, content: #00968b, footer: #85c79c),
-    $spring: (header: #f4fac7, content: #c2454e, footer: #ffb158),
+    mist: (
+      header: #dcfac0,
+      content: #00968b,
+      footer: #85c79c,
+    ),
+    $spring: (
+      header: #f4fac7,
+      content: #c2454e,
+      footer: #ffb158,
+    ),
   ),
 );
 
diff --git a/malva/tests/fmt/scss/trailing-comma/list.snap b/malva/tests/fmt/scss/trailing-comma/list.snap
index a2dd925..5762ce7 100644
--- a/malva/tests/fmt/scss/trailing-comma/list.snap
+++ b/malva/tests/fmt/scss/trailing-comma/list.snap
@@ -7,8 +7,16 @@ $list: ("Helvetica", "Arial", sans-serif);
 $colors: ("red", "blue");
 $config: (
   themes: (
-    mist: (header: #dcfac0, content: #00968b, footer: #85c79c),
-    $spring: (header: #f4fac7, content: #c2454e, footer: #ffb158)
+    mist: (
+      header: #dcfac0,
+      content: #00968b,
+      footer: #85c79c
+    ),
+    $spring: (
+      header: #f4fac7,
+      content: #c2454e,
+      footer: #ffb158
+    )
   )
 );
 
diff --git a/malva/tests/fmt/scss/trailing-comma/map.snap b/malva/tests/fmt/scss/trailing-comma/map.snap
index c27be44..cc084b7 100644
--- a/malva/tests/fmt/scss/trailing-comma/map.snap
+++ b/malva/tests/fmt/scss/trailing-comma/map.snap
@@ -1,7 +1,11 @@
 ---
 source: malva/tests/fmt.rs
 ---
-$map: (small: 767px, medium: 992px, large: 1200px);
+$map: (
+  small: 767px,
+  medium: 992px,
+  large: 1200px
+);
 $map: (
   "medium": (min-width: 800px),
   "large": (min-width: 1000px),