diff --git a/crates/rust-analyzer/src/config.rs b/crates/rust-analyzer/src/config.rs
index 425ef145c24e..9c873c097b1f 100644
--- a/crates/rust-analyzer/src/config.rs
+++ b/crates/rust-analyzer/src/config.rs
@@ -25,7 +25,7 @@ use vfs::AbsPathBuf;
 
 use crate::{
     caps::completion_item_edit_resolve, diagnostics::DiagnosticsMapConfig,
-    line_endings::OffsetEncoding, lsp_ext::supports_utf8,
+    line_index::OffsetEncoding, lsp_ext::supports_utf8,
 };
 
 config_data! {
diff --git a/crates/rust-analyzer/src/from_proto.rs b/crates/rust-analyzer/src/from_proto.rs
index 4f3ae8cc3a93..5b02b2598d39 100644
--- a/crates/rust-analyzer/src/from_proto.rs
+++ b/crates/rust-analyzer/src/from_proto.rs
@@ -9,7 +9,7 @@ use vfs::AbsPathBuf;
 use crate::{
     from_json,
     global_state::GlobalStateSnapshot,
-    line_endings::{LineIndex, OffsetEncoding},
+    line_index::{LineIndex, OffsetEncoding},
     lsp_ext, Result,
 };
 
diff --git a/crates/rust-analyzer/src/global_state.rs b/crates/rust-analyzer/src/global_state.rs
index 85c87645c0c1..52c2497137f5 100644
--- a/crates/rust-analyzer/src/global_state.rs
+++ b/crates/rust-analyzer/src/global_state.rs
@@ -22,7 +22,7 @@ use crate::{
     diagnostics::{CheckFixes, DiagnosticCollection},
     document::DocumentData,
     from_proto,
-    line_endings::{LineEndings, LineIndex},
+    line_index::{LineEndings, LineIndex},
     main_loop::Task,
     op_queue::OpQueue,
     reload::SourceRootConfig,
diff --git a/crates/rust-analyzer/src/handlers.rs b/crates/rust-analyzer/src/handlers.rs
index d8b00e9c5824..4f6f250d6c6a 100644
--- a/crates/rust-analyzer/src/handlers.rs
+++ b/crates/rust-analyzer/src/handlers.rs
@@ -36,8 +36,7 @@ use crate::{
     diff::diff,
     from_proto,
     global_state::{GlobalState, GlobalStateSnapshot},
-    line_endings::LineEndings,
-    line_endings::LineIndex,
+    line_index::{LineEndings, LineIndex},
     lsp_ext::{self, InlayHint, InlayHintsParams},
     lsp_utils::all_edits_are_disjoint,
     to_proto, LspError, Result,
diff --git a/crates/rust-analyzer/src/lib.rs b/crates/rust-analyzer/src/lib.rs
index 2207b9a87544..8b874239c778 100644
--- a/crates/rust-analyzer/src/lib.rs
+++ b/crates/rust-analyzer/src/lib.rs
@@ -29,7 +29,7 @@ mod from_proto;
 mod semantic_tokens;
 mod markdown;
 mod diagnostics;
-mod line_endings;
+mod line_index;
 mod request_metrics;
 mod lsp_utils;
 mod thread_pool;
diff --git a/crates/rust-analyzer/src/line_endings.rs b/crates/rust-analyzer/src/line_index.rs
similarity index 94%
rename from crates/rust-analyzer/src/line_endings.rs
rename to crates/rust-analyzer/src/line_index.rs
index dd8901152882..c116414da01d 100644
--- a/crates/rust-analyzer/src/line_endings.rs
+++ b/crates/rust-analyzer/src/line_index.rs
@@ -1,3 +1,6 @@
+//! Enhances `ide::LineIndex` with additional info required to convert offsets
+//! into lsp positions.
+//!
 //! We maintain invariant that all internal strings use `\n` as line separator.
 //! This module does line ending conversion and detection (so that we can
 //! convert back to `\r\n` on the way out).
diff --git a/crates/rust-analyzer/src/lsp_utils.rs b/crates/rust-analyzer/src/lsp_utils.rs
index 6b8e347b9f7f..84f78b5b842c 100644
--- a/crates/rust-analyzer/src/lsp_utils.rs
+++ b/crates/rust-analyzer/src/lsp_utils.rs
@@ -7,7 +7,7 @@ use lsp_server::Notification;
 use crate::{
     from_proto,
     global_state::GlobalState,
-    line_endings::{LineEndings, LineIndex, OffsetEncoding},
+    line_index::{LineEndings, LineIndex, OffsetEncoding},
 };
 
 pub(crate) fn is_canceled(e: &(dyn Error + 'static)) -> bool {
diff --git a/crates/rust-analyzer/src/to_proto.rs b/crates/rust-analyzer/src/to_proto.rs
index 368d916e71a7..6aff65575dcd 100644
--- a/crates/rust-analyzer/src/to_proto.rs
+++ b/crates/rust-analyzer/src/to_proto.rs
@@ -17,7 +17,7 @@ use serde_json::to_value;
 use crate::{
     cargo_target_spec::CargoTargetSpec,
     global_state::GlobalStateSnapshot,
-    line_endings::{LineEndings, LineIndex, OffsetEncoding},
+    line_index::{LineEndings, LineIndex, OffsetEncoding},
     lsp_ext, semantic_tokens, Result,
 };