Fix shape calculation for table at column boundary

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 - Fixed spaces around brackets string (`[[string]]`) used as an index or table key (i.e. `[ [[string]] ]`) being removed, leading to a syntax error. ([#293](https://github.com/JohnnyMorganz/StyLua/issues/293))
 - Fixed incorrect shape calculation leading to arguments incorrectly expanding when under column width. ([#298](https://github.com/JohnnyMorganz/StyLua/issues/298))
+- Fixed incorrect shape calculation for singleline table at the column width boundary. ([#296](https://github.com/JohnnyMorganz/StyLua/issues/296))
 
 ## [0.11.1] - 2021-11-08
 ### Changed

src/formatters/table.rs

@@ -373,10 +373,18 @@ pub fn format_table_constructor(
             // exponential time complexity with respect to how deep the table is.
             // TODO: find an improved heuristic whilst comparing against benchmarks
             let braces_range = (
-                start_brace.token().end_position().bytes(),
+                // Use the position of the last trivia in case there is some present (e.g. whitespace)
+                // So that we don't include an extra space
+                if let Some(token) = start_brace.leading_trivia().last() {
+                    token.end_position().bytes()
+                } else {
+                    start_brace.token().end_position().bytes()
+                },
                 end_brace.token().start_position().bytes(),
             );
-            let singleline_shape = shape + (braces_range.1 - braces_range.0) + 4; // 4 = two braces + single space before/after them
+            let singleline_shape = shape + (braces_range.1 - braces_range.0) + 3; // 4 = two braces + single space before last brace
+
+            println!("{:?} {}", singleline_shape, singleline_shape.over_budget());
 
             match singleline_shape.over_budget() {
                 true => TableType::MultiLine,

tests/inputs/table-6.lua

@@ -0,0 +1,3 @@
+-- https://github.com/JohnnyMorganz/StyLua/issues/296
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa({ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = false})
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa({ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = false })

tests/snapshots/tests__standard@table-6.lua.snap

@@ -0,0 +1,9 @@
+---
+source: tests/tests.rs
+expression: format(&contents)
+
+---
+-- https://github.com/JohnnyMorganz/StyLua/issues/296
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa({ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = false })
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa({ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = false })
+