feat: add debug logging for tab indentation issues

lua/todoer/init.lua

@@ -77,6 +77,19 @@ local function get_indent_string()
     return et and string.rep(" ", sw) or "\t"
 end
 
+-- Debug helper to print line details
+local function debug_line(msg, details)
+    print(string.format(
+        "[DEBUG] %s:\n  indent: '%s' (len=%d)\n  marker: '%s'\n  content: '%s'\n  is_todo: %s",
+        msg,
+        details.indent,
+        #details.indent,
+        details.marker or "nil",
+        details.content,
+        details.is_todo
+    ))
+end
+
 -- Helper: Gets details for the current line including cursor position
 local function get_current_line_details_with_cursor()
     local cursor_pos = vim.api.nvim_win_get_cursor(0)
@@ -275,14 +288,23 @@ local function setup_buffer_keymaps()
 
     -- Handle tab indentation for TODO lines
     local function press_tab()
-        local details = get_line_details(vim.api.nvim_win_get_cursor(0)[1])
+        local lnum = vim.api.nvim_win_get_cursor(0)[1]
+        local details = get_line_details(lnum)
+        
+        print("\n[DEBUG TAB] Line "..lnum.." before:")
+        debug_line("Original", details)
+        
         if not details or not details.is_todo then
+            print("[DEBUG TAB] Not a TODO line, using default Tab")
             return vim.api.nvim_replace_termcodes("<Tab>", true, false, true)
         end
 
         local indent_str = get_indent_string()
         local new_line = details.indent .. indent_str .. 
                        (details.marker or "-") .. " [ ] " .. details.content
+        
+        print("[DEBUG TAB] New line will be:", new_line)
+        print("[DEBUG TAB] Indent string:", "'"..indent_str.."' (length="..#indent_str..")")
         vim.api.nvim_set_current_line(new_line)
         
         -- Calculate new cursor column (preserve relative position)
@@ -295,8 +317,14 @@ local function setup_buffer_keymaps()
 
     -- Handle shift-tab outdentation for TODO lines
     local function press_shift_tab()
-        local details = get_line_details(vim.api.nvim_win_get_cursor(0)[1])
+        local lnum = vim.api.nvim_win_get_cursor(0)[1]
+        local details = get_line_details(lnum)
+        
+        print("\n[DEBUG SHIFT-TAB] Line "..lnum.." before:")
+        debug_line("Original", details)
+        
         if not details or not details.is_todo or #details.indent == 0 then
+            print("[DEBUG SHIFT-TAB] Not a TODO line or at min indent, using default S-Tab")
             return vim.api.nvim_replace_termcodes("<S-Tab>", true, false, true)
         end
 
@@ -304,6 +332,9 @@ local function setup_buffer_keymaps()
         local new_indent = details.indent:sub(1, -sw - 1)
         local new_line = new_indent .. 
                        (details.marker or "-") .. " [ ] " .. details.content
+        
+        print("[DEBUG SHIFT-TAB] New indent:", "'"..new_indent.."' (length="..#new_indent..")")
+        print("[DEBUG SHIFT-TAB] New line will be:", new_line)
         vim.api.nvim_set_current_line(new_line)
         
         -- Calculate new cursor column (preserve relative position)