3 files changed, 20 insertions, 3 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 6e25d4f86..71223218d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1438,9 +1438,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_lexer"
-version = "697.0.0"
+version = "700.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67adbe260a0a11910624d6d28c0304fcf7b063e666682111005c83b09f73429d"
+checksum = "5ed36784376b69c941d7aa36e960a52ac712e2663960357121a4d9f2cc58e225"
 dependencies = [
  "unicode-xid",
 ]
diff --git a/crates/rust-analyzer/src/handlers.rs b/crates/rust-analyzer/src/handlers.rs
index 001f3a37d..42451cd2d 100644
--- a/crates/rust-analyzer/src/handlers.rs
+++ b/crates/rust-analyzer/src/handlers.rs
@@ -858,6 +858,23 @@ pub(crate) fn handle_formatting(
         RustfmtConfig::Rustfmt { extra_args } => {
             let mut cmd = process::Command::new(toolchain::rustfmt());
             cmd.args(extra_args);
+            // try to chdir to the file so we can respect `rustfmt.toml`
+            // FIXME: use `rustfmt --config-path` once
+            // https://github.com/rust-lang/rustfmt/issues/4660 gets fixed
+            match params.text_document.uri.to_file_path() {
+                Ok(mut path) => {
+                    // pop off file name
+                    if path.pop() && path.is_dir() {
+                        cmd.current_dir(path);
+                    }
+                }
+                Err(_) => {
+                    log::error!(
+                        "Unable to get file path for {}, rustfmt.toml might be ignored",
+                        params.text_document.uri
+                    );
+                }
+            }
             if let Some(&crate_id) = crate_ids.first() {
                 // Assume all crates are in the same edition
                 let edition = snap.analysis.crate_edition(crate_id)?;
diff --git a/crates/syntax/Cargo.toml b/crates/syntax/Cargo.toml
index 55b437a3a..24298fbfa 100644
--- a/crates/syntax/Cargo.toml
+++ b/crates/syntax/Cargo.toml
@@ -13,7 +13,7 @@ doctest = false
 [dependencies]
 itertools = "0.10.0"
 rowan = "0.12"
-rustc_lexer = { version = "697.0.0", package = "rustc-ap-rustc_lexer" }
+rustc_lexer = { version = "700.0.0", package = "rustc-ap-rustc_lexer" }
 rustc-hash = "1.1.0"
 arrayvec = "0.5.1"
 once_cell = "1.3.1"