Add error handling to set language command

If you type a nonexistant language an appropriate message will show,
and the language won't be changed.

1 files changed, 5 insertions, 1 deletions

diff --git a/helix-view/src/document.rs b/helix-view/src/document.rs
index a0d50440..84c92320 100644
--- a/helix-view/src/document.rs
+++ b/helix-view/src/document.rs
@@ -683,9 +683,13 @@ impl Document {
         &mut self,
         language_id: &str,
         config_loader: Arc<syntax::Loader>,
-    ) {
+    ) -> bool {
         let language_config = config_loader.language_config_for_language_id(language_id);
+        if language_config.is_none() {
+            return false;
+        }
         self.set_language(language_config, Some(config_loader));
+        true
     }
 
     /// Set the LSP.