fix: markdown spec not having parser installed

Author: aaronik

lua/treewalker/swap.lua

@@ -19,7 +19,10 @@ end
 local function is_supported_ft()
   local unsupported_filetypes = {
     ["text"] = true,
+    ["txt"] = true,
+
     ["markdown"] = true,
+    ["md"] = true,
   }
 
   local bufnr = vim.api.nvim_get_current_buf()

tests/minimal_init.lua

@@ -31,7 +31,6 @@ require('nvim-treesitter.configs').setup {
 
 -- These are required lest nvim not be able to tell these parsers are installed
 vim.treesitter.language.register('ruby', { 'rb' })
--- TODO Why on earth does this break tests. Isn't the md parser supposed to come by default?
--- vim.treesitter.language.register('markdown', { 'md' })
+vim.treesitter.language.register('markdown', { 'md' })
 
 dofile("plugin/init.lua") -- get the Treewalker command present

tests/treewalker/markdown_spec.lua

@@ -9,8 +9,7 @@ describe("Movement in a markdown file", function()
     load_fixture("/markdown.md")
   end)
 
-  -- TODO this needs to work
-  -- h.ensure_has_parser()
+  h.ensure_has_parser()
 
   -- This is hard, treesitter is showing all java code as a "block_continuation"
   -- at the same level.
@@ -32,6 +31,8 @@ describe("Swapping in a markdown file:", function()
     load_fixture("/markdown.md")
   end)
 
+  h.ensure_has_parser()
+
   it("turns off for down in md files", function()
     vim.fn.cursor(1, 1)
     local lines_before = lines.get_lines(0, -1)