diff --git a/crates/hir-expand/src/builtin/fn_macro.rs b/crates/hir-expand/src/builtin/fn_macro.rs
index f9abe4f556..800b40a9e7 100644
--- a/crates/hir-expand/src/builtin/fn_macro.rs
+++ b/crates/hir-expand/src/builtin/fn_macro.rs
@@ -7,6 +7,7 @@ use intern::{
     Symbol,
     sym::{self},
 };
+use itertools::Itertools;
 use mbe::{DelimiterKind, expect_fragment};
 use span::{Edition, FileId, Span};
 use stdx::format_to;
@@ -681,11 +682,19 @@ fn relative_file(
 }
 
 fn parse_string(tt: &tt::TopSubtree) -> Result<(Symbol, Span), ExpandError> {
-    let delimiter = tt.top_subtree().delimiter;
-    tt.iter()
-        .next()
-        .ok_or(delimiter.open.cover(delimiter.close))
-        .and_then(|tt| match tt {
+    let mut tt = TtElement::Subtree(tt.top_subtree(), tt.iter());
+    (|| {
+        // FIXME: We wrap expression fragments in parentheses which can break this expectation
+        // here
+        // Remove this once we handle none delims correctly
+        while let TtElement::Subtree(sub, tt_iter) = &mut tt
+            && let DelimiterKind::Parenthesis | DelimiterKind::Invisible = sub.delimiter.kind
+        {
+            tt =
+                tt_iter.exactly_one().map_err(|_| sub.delimiter.open.cover(sub.delimiter.close))?;
+        }
+
+        match tt {
             TtElement::Leaf(tt::Leaf::Literal(tt::Literal {
                 symbol: text,
                 span,
@@ -698,35 +707,11 @@ fn parse_string(tt: &tt::TopSubtree) -> Result<(Symbol, Span), ExpandError> {
                 kind: tt::LitKind::StrRaw(_),
                 suffix: _,
             })) => Ok((text.clone(), *span)),
-            // FIXME: We wrap expression fragments in parentheses which can break this expectation
-            // here
-            // Remove this once we handle none delims correctly
-            TtElement::Subtree(tt, mut tt_iter)
-                if tt.delimiter.kind == DelimiterKind::Parenthesis =>
-            {
-                tt_iter
-                    .next()
-                    .and_then(|tt| match tt {
-                        TtElement::Leaf(tt::Leaf::Literal(tt::Literal {
-                            symbol: text,
-                            span,
-                            kind: tt::LitKind::Str,
-                            suffix: _,
-                        })) => Some((unescape_symbol(text), *span)),
-                        TtElement::Leaf(tt::Leaf::Literal(tt::Literal {
-                            symbol: text,
-                            span,
-                            kind: tt::LitKind::StrRaw(_),
-                            suffix: _,
-                        })) => Some((text.clone(), *span)),
-                        _ => None,
-                    })
-                    .ok_or(delimiter.open.cover(delimiter.close))
-            }
             TtElement::Leaf(l) => Err(*l.span()),
             TtElement::Subtree(tt, _) => Err(tt.delimiter.open.cover(tt.delimiter.close)),
-        })
-        .map_err(|span| ExpandError::other(span, "expected string literal"))
+        }
+    })()
+    .map_err(|span| ExpandError::other(span, "expected string literal"))
 }
 
 fn include_expand(
diff --git a/crates/rust-analyzer/src/config.rs b/crates/rust-analyzer/src/config.rs
index e716d14075..51d4c29aa7 100644
--- a/crates/rust-analyzer/src/config.rs
+++ b/crates/rust-analyzer/src/config.rs
@@ -1526,7 +1526,7 @@ impl Config {
         CompletionConfig {
             enable_postfix_completions: self.completion_postfix_enable(source_root).to_owned(),
             enable_imports_on_the_fly: self.completion_autoimport_enable(source_root).to_owned()
-                && self.caps.completion_item_edit_resolve(),
+                && self.caps.has_completion_item_resolve_additionalTextEdits(),
             enable_self_on_the_fly: self.completion_autoself_enable(source_root).to_owned(),
             enable_auto_iter: *self.completion_autoIter_enable(source_root),
             enable_auto_await: *self.completion_autoAwait_enable(source_root),
@@ -2355,10 +2355,6 @@ impl Config {
             .and_then(|it| it.version.as_ref())
     }
 
-    pub fn client_is_helix(&self) -> bool {
-        self.client_info.as_ref().map(|it| it.name == "helix").unwrap_or_default()
-    }
-
     pub fn client_is_neovim(&self) -> bool {
         self.client_info.as_ref().map(|it| it.name == "Neovim").unwrap_or_default()
     }
diff --git a/crates/rust-analyzer/src/lsp/capabilities.rs b/crates/rust-analyzer/src/lsp/capabilities.rs
index 04e31f37fd..f94e7486ff 100644
--- a/crates/rust-analyzer/src/lsp/capabilities.rs
+++ b/crates/rust-analyzer/src/lsp/capabilities.rs
@@ -42,7 +42,7 @@ pub fn server_capabilities(config: &Config) -> ServerCapabilities {
         hover_provider: Some(HoverProviderCapability::Simple(true)),
         completion_provider: Some(CompletionOptions {
             resolve_provider: if config.client_is_neovim() {
-                config.completion_item_edit_resolve().then_some(true)
+                config.has_completion_item_resolve_additionalTextEdits().then_some(true)
             } else {
                 Some(config.caps().completions_resolve_provider())
             },
@@ -207,8 +207,8 @@ impl ClientCapabilities {
         serde_json::from_value(self.0.experimental.as_ref()?.get(index)?.clone()).ok()
     }
 
-    /// Parses client capabilities and returns all completion resolve capabilities rust-analyzer supports.
-    pub fn completion_item_edit_resolve(&self) -> bool {
+    #[allow(non_snake_case)]
+    pub fn has_completion_item_resolve_additionalTextEdits(&self) -> bool {
         (|| {
             Some(
                 self.0
diff --git a/crates/tt/src/iter.rs b/crates/tt/src/iter.rs
index 0418c00174..3246156f1c 100644
--- a/crates/tt/src/iter.rs
+++ b/crates/tt/src/iter.rs
@@ -211,6 +211,7 @@ impl<'a, S: Copy> TtIter<'a, S> {
     }
 }
 
+#[derive(Clone)]
 pub enum TtElement<'a, S> {
     Leaf(&'a Leaf<S>),
     Subtree(&'a Subtree<S>, TtIter<'a, S>),