strip whitespace if version set empty (#164)

Author: wolfv

Cargo.lock

@@ -81,24 +81,27 @@ pub(crate) struct DisplayRequirement<'i, I: Interner> {
 impl<I: Interner> Display for DisplayRequirement<'_, I> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match *self.requirement {
-            Requirement::Single(version_set) => write!(
-                f,
-                "{} {}",
-                self.interner
-                    .display_name(self.interner.version_set_name(version_set)),
-                self.interner.display_version_set(version_set)
-            ),
+            Requirement::Single(version_set) => {
+                let result = format!(
+                    "{} {}",
+                    self.interner
+                        .display_name(self.interner.version_set_name(version_set)),
+                    self.interner.display_version_set(version_set)
+                );
+                write!(f, "{}", result.trim_end())
+            }
             Requirement::Union(version_set_union) => {
                 let formatted_version_sets = self
                     .interner
                     .version_sets_in_union(version_set_union)
                     .format_with(" | ", |version_set, f| {
-                        f(&format_args!(
+                        let result = format!(
                             "{} {}",
                             self.interner
                                 .display_name(self.interner.version_set_name(version_set)),
                             self.interner.display_version_set(version_set)
-                        ))
+                        );
+                        f(&format_args!("{}", result.trim_end()))
                     });
 
                 write!(f, "{}", formatted_version_sets)