3 files changed, 7 insertions, 4 deletions

diff --git a/crates/ra_assists/src/add_impl.rs b/crates/ra_assists/src/add_impl.rs
index 9a0cfb4e7..59ca88468 100644
--- a/crates/ra_assists/src/add_impl.rs
+++ b/crates/ra_assists/src/add_impl.rs
@@ -1,3 +1,5 @@
+use std::fmt::Write;
+
 use hir::db::HirDatabase;
 use join_to_string::join;
 use ra_syntax::{
@@ -17,7 +19,7 @@ pub(crate) fn add_impl(mut ctx: AssistCtx<impl HirDatabase>) -> Option<Assist> {
         let mut buf = String::new();
         buf.push_str("\n\nimpl");
         if let Some(type_params) = &type_params {
-            type_params.syntax().text().push_to(&mut buf);
+            write!(buf, "{}", type_params.syntax()).unwrap();
         }
         buf.push_str(" ");
         buf.push_str(name.text().as_str());
diff --git a/crates/ra_assists/src/ast_editor.rs b/crates/ra_assists/src/ast_editor.rs
index 36235eb13..ab6c347ad 100644
--- a/crates/ra_assists/src/ast_editor.rs
+++ b/crates/ra_assists/src/ast_editor.rs
@@ -95,7 +95,7 @@ impl AstEditor<ast::NamedFieldList> {
         position: InsertPosition<&'_ ast::NamedField>,
         field: &ast::NamedField,
     ) {
-        let is_multiline = self.ast().syntax().text().contains('\n');
+        let is_multiline = self.ast().syntax().text().contains_char('\n');
         let ws;
         let space = if is_multiline {
             ws = tokens::WsBuilder::new(&format!(
diff --git a/crates/ra_assists/src/introduce_variable.rs b/crates/ra_assists/src/introduce_variable.rs
index df6c58989..911de2d48 100644
--- a/crates/ra_assists/src/introduce_variable.rs
+++ b/crates/ra_assists/src/introduce_variable.rs
@@ -1,3 +1,5 @@
+use std::fmt::Write;
+
 use hir::db::HirDatabase;
 use ra_syntax::{
     ast::{self, AstNode},
@@ -35,8 +37,7 @@ pub(crate) fn introduce_variable(mut ctx: AssistCtx<impl HirDatabase>) -> Option
             buf.push_str("let var_name = ");
             TextUnit::of_str("let ")
         };
-
-        expr.syntax().text().push_to(&mut buf);
+        write!(buf, "{}", expr.syntax()).unwrap();
         let full_stmt = ast::ExprStmt::cast(anchor_stmt.clone());
         let is_full_stmt = if let Some(expr_stmt) = &full_stmt {
             Some(expr.syntax().clone()) == expr_stmt.expr().map(|e| e.syntax().clone())