3 files changed, 23 insertions, 0 deletions
diff --git a/doc/server_configurations.md b/doc/server_configurations.md
index 12bd3b96..0b2af021 100644
--- a/doc/server_configurations.md
+++ b/doc/server_configurations.md
@@ -10180,6 +10180,9 @@ require'lspconfig'.rust_analyzer.setup{
   }
 }
 ```
+
+Note: do not set `init_options` for this LS config, it will be automatically populated by the contents of settings["rust-analyzer"] per
+https://github.com/rust-lang/rust-analyzer/blob/eb5da56d839ae0a9e9f50774fa3eb78eb0964550/docs/dev/lsp-extensions.md?plain=1#L26.
     
 
 
@@ -10191,6 +10194,10 @@ require'lspconfig'.rust_analyzer.setup{}
 - CargoReload: Reload current cargo workspace
 
 **Default values:**
+  - `before_init` : 
+  ```lua
+  see source file
+  ```
   - `capabilities` : 
   ```lua
   {
diff --git a/doc/server_configurations.txt b/doc/server_configurations.txt
index 12bd3b96..0b2af021 100644
--- a/doc/server_configurations.txt
+++ b/doc/server_configurations.txt
@@ -10180,6 +10180,9 @@ require'lspconfig'.rust_analyzer.setup{
   }
 }
 ```
+
+Note: do not set `init_options` for this LS config, it will be automatically populated by the contents of settings["rust-analyzer"] per
+https://github.com/rust-lang/rust-analyzer/blob/eb5da56d839ae0a9e9f50774fa3eb78eb0964550/docs/dev/lsp-extensions.md?plain=1#L26.
     
 
 
@@ -10191,6 +10194,10 @@ require'lspconfig'.rust_analyzer.setup{}
 - CargoReload: Reload current cargo workspace
 
 **Default values:**
+  - `before_init` : 
+  ```lua
+  see source file
+  ```
   - `capabilities` : 
   ```lua
   {
diff --git a/lua/lspconfig/server_configurations/rust_analyzer.lua b/lua/lspconfig/server_configurations/rust_analyzer.lua
index b89546a7..13a36207 100644
--- a/lua/lspconfig/server_configurations/rust_analyzer.lua
+++ b/lua/lspconfig/server_configurations/rust_analyzer.lua
@@ -77,6 +77,12 @@ return {
         serverStatusNotification = true,
       },
     },
+    before_init = function(init_params, config)
+      -- See https://github.com/rust-lang/rust-analyzer/blob/eb5da56d839ae0a9e9f50774fa3eb78eb0964550/docs/dev/lsp-extensions.md?plain=1#L26
+      if config.settings and config.settings['rust-analyzer'] then
+        init_params.initializationOptions = config.settings['rust-analyzer']
+      end
+    end,
   },
   commands = {
     CargoReload = {
@@ -105,6 +111,9 @@ require'lspconfig'.rust_analyzer.setup{
   }
 }
 ```
+
+Note: do not set `init_options` for this LS config, it will be automatically populated by the contents of settings["rust-analyzer"] per
+https://github.com/rust-lang/rust-analyzer/blob/eb5da56d839ae0a9e9f50774fa3eb78eb0964550/docs/dev/lsp-extensions.md?plain=1#L26.
     ]],
     default_config = {
       root_dir = [[root_pattern("Cargo.toml", "rust-project.json")]],