diff --git a/data/core/syntax.lua b/data/core/syntax.lua
index de8ec9d0..adecd0cd 100644
--- a/data/core/syntax.lua
+++ b/data/core/syntax.lua
@@ -3,7 +3,7 @@ local common = require "core.common"
 local syntax = {}
 syntax.items = {}
 
-local plain_text_syntax = { patterns = {}, symbols = {} }
+local plain_text_syntax = { name = "Plain Text", patterns = {}, symbols = {} }
 
 
 function syntax.add(t)
diff --git a/data/plugins/language_md.lua b/data/plugins/language_md.lua
index 62cb8a86..e7c870ec 100644
--- a/data/plugins/language_md.lua
+++ b/data/plugins/language_md.lua
@@ -9,7 +9,6 @@ syntax.add {
   patterns = {
     { pattern = "\\.",                      type = "normal"   },
     { pattern = { "<!%-%-", "%-%->" },      type = "comment"  },
-    { pattern = { "```c", "```" },          type = "string", syntax = ".c" },
     { pattern = { "```c++", "```" },        type = "string", syntax = ".cpp" },
     { pattern = { "```python", "```" },     type = "string", syntax = ".py" },
     { pattern = { "```ruby", "```" },       type = "string", syntax = ".rb" },
@@ -26,6 +25,21 @@ syntax.add {
     { pattern = { "```cmake", "```" },      type = "string", syntax = ".cmake" },
     { pattern = { "```d", "```" },          type = "string", syntax = ".d" },
     { pattern = { "```glsl", "```" },       type = "string", syntax = ".glsl" },
+    { pattern = { "```c", "```" },          type = "string", syntax = ".c" },
+    { pattern = { "```julia", "```" },          type = "string", syntax = ".jl" },
+    { pattern = { "```rust", "```" },          type = "string", syntax = ".rs" },
+    { pattern = { "```dart", "```" },          type = "string", syntax = ".dart" },
+    { pattern = { "```v", "```" },          type = "string", syntax = ".v" },
+    { pattern = { "```toml", "```" },          type = "string", syntax = ".toml" },
+    { pattern = { "```yaml", "```" },          type = "string", syntax = ".yaml" },
+    { pattern = { "```php", "```" },          type = "string", syntax = ".php" },
+    { pattern = { "```nim", "```" },          type = "string", syntax = ".nim" },
+    { pattern = { "```typescript", "```" },          type = "string", syntax = ".ts" },
+    { pattern = { "```rescript", "```" },          type = "string", syntax = ".res" },
+    { pattern = { "```moon", "```" },          type = "string", syntax = ".moon" },
+    { pattern = { "```go", "```" },          type = "string", syntax = ".go" },
+    { pattern = { "```lobster", "```" },          type = "string", syntax = ".lobster" },
+     { pattern = { "```liquid", "```" },          type = "string", syntax = ".liquid" },
     { pattern = { "```", "```" },           type = "string"   },
     { pattern = { "``", "``", "\\" },       type = "string"   },
     { pattern = { "`", "`", "\\" },         type = "string"   },
diff --git a/data/plugins/treeview.lua b/data/plugins/treeview.lua
index 2e66083a..4f5db701 100644
--- a/data/plugins/treeview.lua
+++ b/data/plugins/treeview.lua
@@ -406,7 +406,7 @@ function RootView:draw(...)
 end
 
 local function is_project_folder(path)
-  return common.basename(core.project_dir) == path
+  return core.project_dir == path
 end
 
 menu:register(function() return view.hovered_item end, {
@@ -417,7 +417,7 @@ menu:register(function() return view.hovered_item end, {
 menu:register(
   function()
     return view.hovered_item
-      and not is_project_folder(view.hovered_item.filename)
+      and not is_project_folder(view.hovered_item.abs_filename)
   end,
   {
     { text = "Rename", command = "treeview:rename" },
@@ -467,9 +467,8 @@ command.add(function() return view.hovered_item ~= nil end, {
   end,
 
   ["treeview:new-file"] = function()
-    local dir_name = view.hovered_item.filename
-    if not is_project_folder(dir_name) then
-      core.command_view:set_text(dir_name .. "/")
+    if not is_project_folder(view.hovered_item.abs_filename) then
+      core.command_view:set_text(view.hovered_item.filename .. "/")
     end
     core.command_view:enter("Filename", function(filename)
       local doc_filename = core.project_dir .. PATHSEP .. filename
@@ -482,9 +481,8 @@ command.add(function() return view.hovered_item ~= nil end, {
   end,
 
   ["treeview:new-folder"] = function()
-    local dir_name = view.hovered_item.filename
-    if not is_project_folder(dir_name) then
-      core.command_view:set_text(dir_name .. "/")
+    if not is_project_folder(view.hovered_item.abs_filename) then
+      core.command_view:set_text(view.hovered_item.filename .. "/")
     end
     core.command_view:enter("Folder Name", function(filename)
       local dir_path = core.project_dir .. PATHSEP .. filename