Typo fixes in documentation

option to passthrough key event to ignored buffer filetypes

README.md

@@ -119,9 +119,15 @@ default DelayTrain mappings are included below:
             ['nv'] = {'h', 'j', 'k', 'l'},
             ['nvi'] = {'<Left>', '<Down>', '<Up>', '<Right>'},
         },
+        ignore_filetypes = {}, -- Example: set to {"help", "NvimTr*"} to
+                                -- disable the plugin for help and NvimTree
     }
 ```
 
+You can define a list of filetypes that will be ignored by delaytrain using
+`ignore_filetypes`. The option accepts a list of strings or patterns. 
+Tip: you can find the filetype for the current buffer using the command `:set ft?`
+
 ### Mappings
 
 The keys option allows you to delay different keypresses in different modes.

doc/delaytrain.txt

@@ -45,6 +45,8 @@ following configuration (default settings included):
             ['nv'] = {'h', 'j', 'k', 'l'},
             ['nvi'] = {'<Left>', '<Down>', '<Up>', '<Right>'},
         },
+        ignore_filetypes = {}, -- Example: set to {"help", "NvimTr*"} to
+                                -- disable the plugin for help and NvimTree
     }
 <
 Keep in mind that the `delay_ms` timer starts on the FIRST keypress and not the 
@@ -61,6 +63,10 @@ the default settings, if you hit j and then hit k after 500ms, both keypresses
 will work. If you wait another 200ms and hit j again, the keypress will not
 work.
 
+You can define a list of filetypes that will be ignored by delaytrain using
+`ignore_filetypes`. The option accepts a list of strings or patterns. Tip:
+you can find the filetype for the current buffer using the command `:set ft?`
+
 ------------------------------------------------------------------------------
 MAPPINGS                                                   *delaytrain-mappings*
 

lua/delaytrain/init.lua

@@ -6,6 +6,7 @@ vim.g.delaytrain_grace_period = 1
 -- Map of keys to their individual current grace period
 -- This keeps track of how many times a key has been pressed
 local current_grace_period_intervals = {}
+local ignore_filetypes = {}
 
 local keymaps = {
     ['nv'] = {'h', 'j', 'k', 'l'},
@@ -17,6 +18,14 @@ local is_enabled = false
 function M.try_delay_keypress(key)
     current_interval = current_grace_period_intervals[key]
 
+    -- ignore user defined patterns
+    for _,ign_ft in ipairs(ignore_filetypes) do
+        if vim.o.filetype:match(ign_ft) then
+            M.send_keypress(key)
+            return
+        end
+    end
+
     -- Ingore on macro execution
     if vim.fn.reg_executing() ~= "" then
         M.send_keypress(key)
@@ -55,6 +64,8 @@ function M.setup(opts)
             vim.g.delaytrain_grace_period = opts.grace_period
         end
 
+        ignore_filetypes = opts.ignore_filetypes or {}
+
         if opts.keys then
             keymaps = opts.keys
         end