reword the message to suggest surrounding with parentheses

Author: chenyukang

compiler/rustc_parse/messages.ftl

@@ -695,7 +695,7 @@ parse_struct_literal_body_without_path =
 
 parse_struct_literal_needing_parens =
     invalid struct literal
-    .suggestion = you might need to surround the struct literal in parentheses
+    .suggestion = you might need to surround the struct literal with parentheses
 
 parse_struct_literal_not_allowed_here = struct literals are not allowed here
     .suggestion = surround the struct literal with parentheses

compiler/rustc_span/src/source_map.rs

@@ -751,7 +751,10 @@ impl SourceMap {
         f: impl Fn(char) -> bool,
     ) -> Result<Span, SpanSnippetError> {
         self.span_to_source(span, |s, start, _end| {
-            let n = s[..start].char_indices().rfind(|&(_, c)| !f(c)).map_or(start, |(i, _)| start - i - 1);
+            let n = s[..start]
+                .char_indices()
+                .rfind(|&(_, c)| !f(c))
+                .map_or(start, |(i, _)| start - i - 1);
             Ok(span.with_lo(span.lo() - BytePos(n as u32)))
         })
     }

tests/ui/parser/issues/issue-111692.stderr

@@ -4,7 +4,7 @@ error: invalid struct literal
 LL |     if x == module::Type { x: module::C, y: 1 } {
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-help: you might need to surround the struct literal in parentheses
+help: you might need to surround the struct literal with parentheses
    |
 LL |     if x == (module::Type { x: module::C, y: 1 }) {
    |             +                                   +
@@ -15,7 +15,7 @@ error: invalid struct literal
 LL |     if x ==module::Type { x: module::C, y: 1 } {
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-help: you might need to surround the struct literal in parentheses
+help: you might need to surround the struct literal with parentheses
    |
 LL |     if x ==(module::Type { x: module::C, y: 1 }) {
    |            +                                   +
@@ -26,7 +26,7 @@ error: invalid struct literal
 LL |     if x == Type { x: module::C, y: 1 } {
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-help: you might need to surround the struct literal in parentheses
+help: you might need to surround the struct literal with parentheses
    |
 LL |     if x == (Type { x: module::C, y: 1 }) {
    |             +                           +
@@ -37,7 +37,7 @@ error: invalid struct literal
 LL |     if x == demo_module::Type { x: module::C, y: 1 } {
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-help: you might need to surround the struct literal in parentheses
+help: you might need to surround the struct literal with parentheses
    |
 LL |     if x == (demo_module::Type { x: module::C, y: 1 }) {
    |             +                                        +

tests/ui/parser/method-call-on-struct-literal-in-if-condition.stderr

@@ -4,7 +4,7 @@ error: invalid struct literal
 LL |     if Example { a: one(), }.is_pos() {
    |        ^^^^^^^^^^^^^^^^^^^^^
    |
-help: you might need to surround the struct literal in parentheses
+help: you might need to surround the struct literal with parentheses
    |
 LL |     if (Example { a: one(), }).is_pos() {
    |        +                     +