Allow disabling alphabetic bullets

Author: dkarter

doc/bullets.txt

@@ -152,6 +152,19 @@ This tends to be fine even if you don't use it, but it can be disabled with:
   `let g:bullets_pad_right = 0`
 
 
+Alphabetic Bullet Max Size
+--------------------------
+To avoid falsely detecting a word as an alphabetic bullet we have limited the
+max size of an alphabetic bullets to `2` characters using the following setting:
+
+  `let g:bullets_max_alpha_characters = 2`
+
+You can change this setting in certain file types if you are not worried about
+that using auto commands.
+
+When changed to `0` this will disable alphabetic bullets altogether.
+
+
 INSERTING BULLETS                           *bullets-insert-new-bullet*
 
 When a supported file type is opened (see |bullets-configuration|) you can start

plugin/bullets.vim

@@ -122,6 +122,10 @@ fun! s:match_roman_list_item(input_text)
 endfun
 
 fun! s:match_alphabetical_list_item(input_text)
+  if g:bullets_max_alpha_characters == 0
+    return {}
+  endif
+
   let l:abc_bullet_regex  = join([
         \ '\v^((\s*)(\u{1,',
         \ string(g:bullets_max_alpha_characters),

spec/alphabetic_bullets_spec.rb

@@ -127,6 +127,29 @@
           not a bullet\n
         TEXT
       end
+
+      it 'does not bullets if configured as 0' do
+        filename = "#{SecureRandom.hex(6)}.txt"
+        write_file(filename, <<-TEXT)
+          # Hello there
+          a. this is the first bullet
+        TEXT
+
+        vim.command 'let g:bullets_max_alpha_characters = 0'
+        vim.edit filename
+        vim.type 'GA'
+        vim.feedkeys '\<cr>'
+        vim.type 'not a bullet'
+        vim.write
+
+        file_contents = IO.read(filename)
+
+        expect(file_contents).to eq normalize_string_indent(<<-TEXT)
+          # Hello there
+          a. this is the first bullet
+          not a bullet\n
+        TEXT
+      end
     end
   end
 end