Fix formatter adding extra unnecessary newlines after literal lists clause values or assignments.

CHANGELOG.md

@@ -9,6 +9,7 @@
 ### Changed
 
 - **aiken-project**: Fix documentation link-tree generation messing up with modules when re-inserting the same module. @KtorZ
+- **aiken-lang**: Fix formatter adding extra unnecessary newlines after literal lists clause values or assignments. @KtorZ
 
 ### Removed
 
@@ -28,6 +29,7 @@
 - **aiken-lang**: Adjust reification of `String` to be shown as plain UTF-8 text strings (instead of hex-encoded byte array). @KtorZ
 - **aiken-lang**: Fix formatting of long if-condition over multiline. @KtorZ & @Microproofs
 - **aiken-lang**: Fix formatting of standalone logical binary chains (`and` & `or`) in functions. @KtorZ
+- **uplc**: Fix script context generation failure on missing datum when evaluating transactions. @solidsnakedev
 
 ### Removed
 

crates/aiken-lang/src/format.rs

@@ -1889,9 +1889,7 @@ impl<'comments> Formatter<'comments> {
                         .force_break(),
                 ),
 
-            UntypedExpr::Fn { .. } | UntypedExpr::List { .. } => {
-                line().append(self.expr(expr, false)).nest(INDENT).group()
-            }
+            UntypedExpr::Fn { .. } => line().append(self.expr(expr, false)).nest(INDENT).group(),
 
             UntypedExpr::When { .. } => line().append(self.expr(expr, false)).nest(INDENT).group(),
 
@@ -1976,6 +1974,7 @@ impl<'comments> Formatter<'comments> {
                     } else {
                         || break_(",", ", ")
                     };
+
                 let elements_document =
                     join(elements.iter().map(|e| self.pattern(e)), break_style());
                 let tail = tail.as_ref().map(|e| {

crates/aiken-lang/src/tests/format.rs

@@ -298,6 +298,7 @@ fn format_nested_when_if() {
             when xs is {
             [] ->
               []
+            [x] -> [1, 2, 3]
             [_x, ..rest] ->
               drop(rest, n - 1)
           }

crates/aiken-lang/src/tests/snapshots/format_long_standalone_literal.snap

@@ -3,8 +3,7 @@ source: crates/aiken-lang/src/tests/format.rs
 description: "Code:\n\ntest foo() {\n  let left =\n    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]\n  let right =\n    [\n      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n      0, 0, 0, 0,\n    ]\n  left == right\n}\n"
 ---
 test foo() {
-  let left =
-    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+  let left = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
   let right =
     [
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,

crates/aiken-lang/src/tests/snapshots/format_nested_when_if.snap

@@ -1,14 +1,14 @@
 ---
 source: crates/aiken-lang/src/tests/format.rs
-description: "Code:\n\npub fn drop(xs: List<a>, n: Int) -> List<a> {\n  if n <= 0 {\n    xs\n  } else {\n    when xs is {\n    [] ->\n      []\n    [_x, ..rest] ->\n      drop(rest, n - 1)\n  }\n  }\n}\n"
+description: "Code:\n\npub fn drop(xs: List<a>, n: Int) -> List<a> {\n  if n <= 0 {\n    xs\n  } else {\n    when xs is {\n    [] ->\n      []\n    [x] -> [1, 2, 3]\n    [_x, ..rest] ->\n      drop(rest, n - 1)\n  }\n  }\n}\n"
 ---
 pub fn drop(xs: List<a>, n: Int) -> List<a> {
   if n <= 0 {
     xs
   } else {
     when xs is {
-      [] ->
-        []
+      [] -> []
+      [x] -> [1, 2, 3]
       [_x, ..rest] -> drop(rest, n - 1)
     }
   }