Merge #4658

4658: Fix problem with format string tokenization r=matklad a=ruabmbua

Fixed by just not handling closing curlybrace escaping.

Closes https://github.com/rust-analyzer/rust-analyzer/issues/4637

Co-authored-by: Roland Ruckerbauer <[email protected]>

1 files changed, 0 insertions, 5 deletions

diff --git a/crates/ra_syntax/src/ast/tokens.rs b/crates/ra_syntax/src/ast/tokens.rs
index 3cd6d99c3..04b0a4480 100644
--- a/crates/ra_syntax/src/ast/tokens.rs
+++ b/crates/ra_syntax/src/ast/tokens.rs
@@ -418,14 +418,9 @@ pub trait HasFormatSpecifier: AstToken {
 
                     let mut cloned = chars.clone().take(2);
                     let first = cloned.next().and_then(|next| next.1.as_ref().ok()).copied();
-                    let second = cloned.next().and_then(|next| next.1.as_ref().ok()).copied();
                     if first != Some('}') {
                         continue;
                     }
-                    if second == Some('}') {
-                        // Escaped format end specifier, `}}`
-                        continue;
-                    }
                     skip_char_and_emit(&mut chars, FormatSpecifier::Close, &mut callback);
                 }
                 _ => {