feat: add Solargraph as the built-in Ruby LSP preset

src/lsp_config.rs

@@ -10,9 +10,10 @@ pub fn resolve(value: Value) -> Result<Vec<ServerConfig>, String> {
         if language_id.is_empty() || language_id.chars().any(char::is_control) {
             return Err("LSP language keys must not be empty or contain control characters".into());
         }
-        let preset = match language_id.as_str() {
-            "rust" => Some(("rust-analyzer", "rs")),
-            "python" => Some(("pylsp", "py")),
+        let preset: Option<(&[&str], &str)> = match language_id.as_str() {
+            "rust" => Some((&["rust-analyzer"], "rs")),
+            "python" => Some((&["pylsp"], "py")),
+            "ruby" => Some((&["solargraph", "stdio"], "rb")),
             _ => None,
         };
         let mut options = match value {
@@ -45,7 +46,7 @@ pub fn resolve(value: Value) -> Result<Vec<ServerConfig>, String> {
         let command = match options.remove("command") {
             Some(value) => command(value, &language_id)?,
             None => match preset {
-                Some((command, _)) => vec![command.into()],
+                Some((command, _)) => command.iter().map(|argument| (*argument).into()).collect(),
                 None => {
                     return Err(format!(
                         "LSP language {language_id:?} requires command argv"