From 93100779114f9e97ba115750e6d5ec8362c9b18a Mon Sep 17 00:00:00 2001
From: eidheim <eidheim@gmail.com>
Date: Tue, 24 Mar 2026 19:19:47 +0100
Subject: [PATCH] Language client: cleanup of workspace/applyEdit

---
 src/source_language_protocol.cpp | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/src/source_language_protocol.cpp b/src/source_language_protocol.cpp
index 7f1b37a..d1802fe 100644
--- a/src/source_language_protocol.cpp
+++ b/src/source_language_protocol.cpp
@@ -604,11 +604,14 @@ void LanguageProtocol::Client::handle_server_request(const boost::variant<size_t
       auto current_view = Notebook::get().get_current_view();
       for(auto &document_change : workspace_edit.document_changes) {
         if(auto edit = boost::get<TextDocumentEdit>(&document_change)) {
-          Source::View *view = nullptr;
-          for(auto &e : Source::View::views) {
-            if(e->file_path == edit->file) {
-              view = e;
-              break;
+          Source::LanguageProtocolView *view = nullptr;
+          {
+            LockGuard lock(views_mutex);
+            for(auto &e : views) {
+              if(e->file_path == edit->file) {
+                view = e;
+                break;
+              }
             }
           }
           if(!view) {
@@ -616,23 +619,22 @@ void LanguageProtocol::Client::handle_server_request(const boost::variant<size_t
               applied = false;
               return;
             }
-            view = Notebook::get().get_current_view();
+            view = dynamic_cast<Source::LanguageProtocolView *>(Notebook::get().get_current_view());
+            if(!view) {
+              applied = false;
+              return;
+            }
           }
 
           auto buffer = view->get_buffer();
           buffer->begin_user_action();
 
-          auto get_line_pos = [this](Source::View *view, const Gtk::TextIter &iter) -> int {
-            if(capabilities.use_line_index)
-              return iter.get_line_index();
-            return utf16_code_unit_count(view->get_line(iter), 0, iter.get_line_index());
-          };
           auto end_iter = buffer->end();
           // If entire buffer is replaced
           if(edit->text_edits.size() == 1 &&
              edit->text_edits[0].range.start.line == 0 && edit->text_edits[0].range.start.character == 0 &&
              (edit->text_edits[0].range.end.line > end_iter.get_line() ||
-              (edit->text_edits[0].range.end.line == end_iter.get_line() && edit->text_edits[0].range.end.character >= get_line_pos(view, end_iter)))) {
+              (edit->text_edits[0].range.end.line == end_iter.get_line() && edit->text_edits[0].range.end.character >= view->get_line_pos(end_iter)))) {
             view->replace_text(edit->text_edits[0].new_text);
           }
           else {