fix: Display context when injected language is not supported

README.md

@@ -145,6 +145,7 @@ Note: if you need support for Neovim 0.6.x please use the tag `compat/0.6`.
   - [ ] `ledger`
   - [ ] `llvm`
   - [ ] `m68k`
+  - [ ] `markdown_inline`
   - [ ] `menhir`
   - [ ] `mermaid`
   - [ ] `meson`

lua/treesitter-context/context.lua

@@ -247,15 +247,21 @@ function M.get(bufnr, winid)
     for i = 1, #parent_trees, 1 do
       local langtree = parent_trees[i]
       local query = get_context_query(langtree:lang())
-      if not query then
-        return
-      end
-
       local parents = get_parent_nodes(langtree, line_range)
       if parents == nil then
         return
       end
 
+      if not query then
+        -- If the language is not supported we ignore it and continue
+        -- with remaining languages. This way we can get as much context
+        -- as possible, even if some injected languages are not supported.
+        --
+        -- There's no continue statement in Lua, so we need to get a
+        -- little creative to skip to the next iteration.
+        parents = {}
+      end
+
       for j = #parents, 1, -1 do
         local parent = parents[j]
         local parent_start_row = parent:range()

test/test.md

@@ -43,3 +43,22 @@
   </body>
 </html>
 ```
+
+# Title
+
+
+
+
+
+Test
+
+
+
+
+
+
+
+
+
+
+

test/ts_context_spec.lua

@@ -42,6 +42,7 @@ describe('ts_context', function()
         "cpp",
         "typescript",
         "markdown",
+        "markdown_inline",
         "html",
         "javascript",
       },
@@ -372,6 +373,22 @@ describe('ts_context', function()
                                       |*10
       ]]}
     end)
+
+    -- Separate Markdown testcase to test plugin behavior with
+    -- unsupported injected languages (markdown_inline does not
+    -- have queries specified)
+    it('markdown_inline', function()
+      cmd('edit test/test.md')
+      exec_lua [[vim.treesitter.start()]]
+
+      feed'47<C-e>'
+      screen:expect{grid=[[
+        {2:# Title                       }|
+                                      |*4
+        ^Test                          |
+                                      |*10
+      ]]}
+    end)
   end)
 
 end)