feat: add cancelled task status with configurable state chars

Problem: the task lifecycle only has `pending`, `wip`, `blocked`, and
`done`. There is no way to mark a task as abandoned. Additionally,
state characters (`>`, `=`) are hardcoded rather than reading from
`config.icons`, so customizing them has no effect on rendering or
parsing.

Solution: add a `cancelled` status with default state char `c`, `g/`
keymap, `PendingCancelled` highlight, filter predicate, and archive
support. Unify state chars by making `state_char()`, `parse_buffer()`,
and `infer_status()` read from `config.icons`. Change defaults to
mnemonic chars: `w` (wip), `b` (blocked), `c` (cancelled).

doc/pending.txt

@@ -347,6 +347,7 @@ Default buffer-local keys: ~
     `gr`          Prompt for a recurrence pattern (`recur`)
     `gw`          Toggle work-in-progress status (`wip`)
     `gb`          Toggle blocked status (`blocked`)
+    `g/`          Toggle cancelled status (`cancelled`)
     `gf`          Prompt for filter predicates (`filter`)
     `<Tab>`       Switch between category / queue view (`view`)
     `gz`          Undo the last `:w` save (`undo`)
@@ -470,6 +471,12 @@ old keys to `false`: >lua
     Toggle blocked status for the task under the cursor.
     If the task is already `blocked`, reverts to `pending`.
 
+                                                   *<Plug>(pending-cancelled)*
+<Plug>(pending-cancelled)
+    Toggle cancelled status for the task under the cursor.
+    If the task is already `cancelled`, reverts to `pending`.
+    Toggling on a `done` task switches it to `cancelled`.
+
                                                 *<Plug>(pending-priority-up)*
 <Plug>(pending-priority-up)
     Increment the priority level for the task under the cursor, clamped
@@ -537,14 +544,15 @@ Category view (default): ~                             *pending-view-category*
     Tasks are grouped under their category header. Categories appear in the
     order tasks were added unless `category_order` is set (see
     |pending-config|). Blank lines separate categories. Within each category,
-    tasks are sorted by status (wip → pending → blocked → done), then by
+    tasks are sorted by status (wip → pending → blocked → done → cancelled), then by
     priority, then by insertion order. Category sections are foldable with
     `zc` and `zo`.
 
 Queue view: ~                                             *pending-view-queue*
     A flat list of all tasks sorted by a configurable tiebreak chain
     (default: status → priority → due → order → id). See
-    `view.queue.sort` in |pending-config| for customization. Category
+    `view.queue.sort` in |pending-config| for customization. Status
+    order: wip → pending → blocked → done → cancelled. Category
     names are shown as right-aligned virtual text alongside the due date
     virtual text so tasks remain identifiable across categories. The
     buffer is named `pending://queue`.
@@ -581,6 +589,8 @@ Available predicates: ~
 
     `blocked`     Show only tasks with status `blocked`.
 
+    `cancelled`   Show only tasks with status `cancelled`.
+
     `clear`       Special value for |:Pending-filter| — clears the active filter
               and shows all tasks.
 
@@ -778,6 +788,7 @@ loads: >lua
         move_up = 'K',
         wip = 'gw',
         blocked = 'gb',
+        cancelled = 'g/',
       },
       sync = {
         gcal = {},
@@ -967,17 +978,21 @@ Fields: ~
                          See |pending-gcal|, |pending-gtasks|, |pending-s3|.
 
     {icons}              (table)                          *pending.Icons*
-                         Icon characters displayed in the buffer. The
+                         Icon characters used for rendering and parsing
-                         {pending}, {done}, {priority}, {wip}, and
+                         task checkboxes. The {pending}, {done},
-                         {blocked} characters appear inside brackets
+                         {priority}, {wip}, {blocked}, and {cancelled}
-                         (`[icon]`) as an overlay on the checkbox. The
+                         characters determine what is written inside
-                         {category} character prefixes both header lines
+                         brackets (`[icon]`) in the buffer text and how
-                         and EOL category labels. Fields:
+                         status is inferred on `:w`. Each must be a
+                         single character. The {category} character
+                         prefixes header lines and EOL category labels.
+                         Fields:
                            {pending}   Pending task character. Default: ' '
                            {done}      Done task character. Default: 'x'
                            {priority}  Priority task character. Default: '!'
-                           {wip}       Work-in-progress character. Default: '>'
+                           {wip}       Work-in-progress character. Default: 'w'
-                           {blocked}   Blocked task character. Default: '='
+                           {blocked}   Blocked task character. Default: 'b'
+                           {cancelled} Cancelled task character. Default: 'c'
                            {due}       Due date prefix. Default: '.'
                            {recur}     Recurrence prefix. Default: '~'
                            {category}  Category prefix. Default: '#'
@@ -1034,6 +1049,10 @@ PendingWip          Applied to the checkbox icon of work-in-progress tasks.
 PendingBlocked      Applied to the checkbox icon and text of blocked tasks.
                     Default: links to `DiagnosticError`.
 
+                                                           *PendingCancelled*
+PendingCancelled    Applied to the checkbox icon and text of cancelled tasks.
+                    Default: links to `NonText`.
+
                                                             *PendingPriority*
 PendingPriority     Applied to the checkbox icon of priority 1 tasks.
                     Default: links to `DiagnosticWarn`.
@@ -1603,8 +1622,8 @@ with cached data and updates extmarks when the fetch completes.
 
 State pull: ~
 Requires `forge.close = true`. After fetching, if the remote issue/PR
-is closed or merged and the local task is pending/wip/blocked, the task is
+is closed or merged and the local task is pending/wip/blocked (not cancelled),
-automatically marked as done. Disabled by default. One-way: local status
+the task is automatically marked as done. Disabled by default. One-way: local status
 changes do not push back to the forge.
 
 Highlight groups: ~
@@ -1632,7 +1651,7 @@ Task fields: ~
     {id}          (integer) Unique, auto-incrementing task identifier.
     {description} (string)  Task text as shown in the buffer.
     {status}      (string)  `'pending'`, `'wip'`, `'blocked'`, `'done'`,
-                            or `'deleted'`.
+                            `'cancelled'`, or `'deleted'`.
     {category}    (string)  Category name. Defaults to `default_category`.
     {priority}    (integer) Priority level: `0` (none), `1`–`3` (or up to
                             `max_priority`). Higher values sort first.

lua/pending/buffer.lua

@@ -146,6 +146,14 @@ local function apply_inline_row(bufnr, row, m, icons)
         hl_group = 'PendingDone',
         invalidate = true,
       })
+    elseif m.status == 'cancelled' then
+      local line = vim.api.nvim_buf_get_lines(bufnr, row, row + 1, false)[1] or ''
+      local col_start = line:find('/%d+/') and select(2, line:find('/%d+/')) or 0
+      vim.api.nvim_buf_set_extmark(bufnr, ns_inline, row, col_start, {
+        end_col = #line,
+        hl_group = 'PendingCancelled',
+        invalidate = true,
+      })
     elseif m.status == 'blocked' then
       local line = vim.api.nvim_buf_get_lines(bufnr, row, row + 1, false)[1] or ''
       local col_start = line:find('/%d+/') and select(2, line:find('/%d+/')) or 0
@@ -160,10 +168,12 @@ local function apply_inline_row(bufnr, row, m, icons)
     local icon, icon_hl
     if m.status == 'done' then
       icon, icon_hl = icons.done, 'PendingDone'
+    elseif m.status == 'cancelled' then
+      icon, icon_hl = icons.cancelled, 'PendingCancelled'
     elseif m.status == 'wip' then
-      icon, icon_hl = icons.wip or '>', 'PendingWip'
+      icon, icon_hl = icons.wip, 'PendingWip'
     elseif m.status == 'blocked' then
-      icon, icon_hl = icons.blocked or '=', 'PendingBlocked'
+      icon, icon_hl = icons.blocked, 'PendingBlocked'
     elseif m.priority and m.priority >= 3 then
       icon, icon_hl = icons.priority, 'PendingPriority3'
     elseif m.priority and m.priority == 2 then
@@ -216,11 +226,14 @@ local function infer_status(line)
   if not ch then
     return nil
   end
-  if ch == 'x' then
+  local icons = config.get().icons
+  if ch == icons.done then
     return 'done'
-  elseif ch == '>' then
+  elseif ch == icons.cancelled then
+    return 'cancelled'
+  elseif ch == icons.wip then
     return 'wip'
-  elseif ch == '=' then
+  elseif ch == icons.blocked then
     return 'blocked'
   end
   return 'pending'
@@ -573,6 +586,7 @@ local function setup_highlights()
   vim.api.nvim_set_hl(0, 'PendingPriority3', { link = 'DiagnosticError', default = true })
   vim.api.nvim_set_hl(0, 'PendingWip', { link = 'DiagnosticInfo', default = true })
   vim.api.nvim_set_hl(0, 'PendingBlocked', { link = 'DiagnosticError', default = true })
+  vim.api.nvim_set_hl(0, 'PendingCancelled', { link = 'NonText', default = true })
   vim.api.nvim_set_hl(0, 'PendingRecur', { link = 'DiagnosticInfo', default = true })
   vim.api.nvim_set_hl(0, 'PendingFilter', { link = 'DiagnosticWarn', default = true })
   vim.api.nvim_set_hl(0, 'PendingForge', { link = 'DiagnosticInfo', default = true })

lua/pending/config.lua

@@ -11,6 +11,7 @@
 ---@field priority string
 ---@field wip string
 ---@field blocked string
+---@field cancelled string
 ---@field due string
 ---@field recur string
 ---@field category string
@@ -80,6 +81,7 @@
 ---@field blocked? string|false
 ---@field priority_up_visual? string|false
 ---@field priority_down_visual? string|false
+---@field cancelled? string|false
 
 ---@class pending.CategoryViewConfig
 ---@field order? string[]
@@ -162,6 +164,7 @@ local defaults = {
     move_up = 'K',
     wip = 'gw',
     blocked = 'gb',
+    cancelled = 'g/',
     priority_up = '<C-a>',
     priority_down = '<C-x>',
     priority_up_visual = 'g<C-a>',
@@ -192,8 +195,9 @@ local defaults = {
     pending = ' ',
     done = 'x',
     priority = '!',
-    wip = '>',
+    wip = 'w',
-    blocked = '=',
+    blocked = 'b',
+    cancelled = 'c',
     due = '.',
     recur = '~',
     category = '#',

lua/pending/diff.lua

@@ -43,14 +43,17 @@ function M.parse_buffer(lines)
       table.insert(result, { type = 'blank', lnum = i })
     elseif id or body then
       local stripped = body:match('^- %[.?%] (.*)$') or body
-      local state_char = body:match('^- %[(.-)%]') or ' '
+      local icons = config.get().icons
-      local priority = state_char == '!' and 1 or 0
+      local state_char = body:match('^- %[(.-)%]') or icons.pending
+      local priority = state_char == icons.priority and 1 or 0
       local status
-      if state_char == 'x' then
+      if state_char == icons.done then
         status = 'done'
-      elseif state_char == '>' then
+      elseif state_char == icons.cancelled then
+        status = 'cancelled'
+      elseif state_char == icons.wip then
         status = 'wip'
-      elseif state_char == '=' then
+      elseif state_char == icons.blocked then
         status = 'blocked'
       else
         status = 'pending'
@@ -177,7 +180,7 @@ function M.apply(lines, s, hidden_ids)
         end
         if entry.status and task.status ~= entry.status then
           task.status = entry.status
-          if entry.status == 'done' then
+          if entry.status == 'done' or entry.status == 'cancelled' then
             task['end'] = now
           else
             task['end'] = nil

lua/pending/init.lua

@@ -47,7 +47,7 @@ function M._recompute_counts()
   local today_str = os.date('%Y-%m-%d') --[[@as string]]
 
   for _, task in ipairs(get_store():active_tasks()) do
-    if task.status ~= 'done' and task.status ~= 'deleted' then
+    if task.status ~= 'done' and task.status ~= 'deleted' and task.status ~= 'cancelled' then
       pending = pending + 1
       if task.priority > 0 then
         priority = priority + 1
@@ -173,6 +173,11 @@ local function compute_hidden_ids(tasks, predicates)
           visible = false
           break
         end
+      elseif pred == 'cancelled' then
+        if task.status ~= 'cancelled' then
+          visible = false
+          break
+        end
       end
     end
     if not visible then
@@ -368,6 +373,9 @@ function M._setup_buf_mappings(bufnr)
     blocked = function()
       M.toggle_status('blocked')
     end,
+    cancelled = function()
+      M.toggle_status('cancelled')
+    end,
     priority_up = function()
       M.increment_priority()
     end,
@@ -843,7 +851,7 @@ function M.prompt_date()
   end)
 end
 
----@param target_status 'wip'|'blocked'
+---@param target_status 'wip'|'blocked'|'cancelled'
 ---@return nil
 function M.toggle_status(target_status)
   local bufnr = buffer.bufnr()
@@ -869,7 +877,7 @@ function M.toggle_status(target_status)
     return
   end
   if task.status == target_status then
-    s:update(id, { status = 'pending' })
+    s:update(id, { status = 'pending', ['end'] = vim.NIL })
   else
     s:update(id, { status = target_status })
   end
@@ -1187,7 +1195,7 @@ function M.archive(arg)
   log.debug(('archive: days=%d cutoff=%s total_tasks=%d'):format(days, cutoff, #tasks))
   local count = 0
   for _, task in ipairs(tasks) do
-    if (task.status == 'done' or task.status == 'deleted') and task['end'] then
+    if (task.status == 'done' or task.status == 'deleted' or task.status == 'cancelled') and task['end'] then
       if task['end'] < cutoff then
         count = count + 1
       end
@@ -1208,7 +1216,7 @@ function M.archive(arg)
     function()
       local kept = {}
       for _, task in ipairs(tasks) do
-        if (task.status == 'done' or task.status == 'deleted') and task['end'] then
+        if (task.status == 'done' or task.status == 'deleted' or task.status == 'cancelled') and task['end'] then
           if task['end'] < cutoff then
             goto skip
           end

lua/pending/store.lua

@@ -1,6 +1,6 @@
 local config = require('pending.config')
 
----@alias pending.TaskStatus 'pending'|'done'|'deleted'|'wip'|'blocked'
+---@alias pending.TaskStatus 'pending'|'done'|'deleted'|'wip'|'blocked'|'cancelled'
 ---@alias pending.RecurMode 'scheduled'|'completion'
 
 ---@class pending.TaskExtra
@@ -331,7 +331,7 @@ function Store:update(id, fields)
     end
   end
   task.modified = now
-  if fields.status == 'done' or fields.status == 'deleted' then
+  if fields.status == 'done' or fields.status == 'deleted' or fields.status == 'cancelled' then
     task['end'] = task['end'] or now
   end
   return task

lua/pending/sync/gcal.lua

@@ -177,6 +177,7 @@ function M.push()
         and (
           task.status == 'done'
           or task.status == 'deleted'
+          or task.status == 'cancelled'
           or (task.status == 'pending' and not task.due)
         )
 

lua/pending/views.lua

@@ -71,21 +71,24 @@ local function compute_forge_spans(task, prefix_len)
 end
 
 ---@type table<string, integer>
-local status_rank = { wip = 0, pending = 1, blocked = 2, done = 3 }
+local status_rank = { wip = 0, pending = 1, blocked = 2, done = 3, cancelled = 4 }
 
 ---@param task pending.Task
 ---@return string
 local function state_char(task)
+  local icons = config.get().icons
   if task.status == 'done' then
-    return 'x'
+    return icons.done
+  elseif task.status == 'cancelled' then
+    return icons.cancelled
   elseif task.status == 'wip' then
-    return '>'
+    return icons.wip
   elseif task.status == 'blocked' then
-    return '='
+    return icons.blocked
   elseif task.priority > 0 then
-    return '!'
+    return icons.priority
   end
-  return ' '
+  return icons.pending
 end
 
 ---@param tasks pending.Task[]
@@ -204,7 +207,7 @@ function M.category_view(tasks)
       by_cat[cat] = {}
       done_by_cat[cat] = {}
     end
-    if task.status == 'done' or task.status == 'deleted' then
+    if task.status == 'done' or task.status == 'deleted' or task.status == 'cancelled' then
       table.insert(done_by_cat[cat], task)
     else
       table.insert(by_cat[cat], task)
@@ -279,7 +282,11 @@ function M.category_view(tasks)
         status = task.status,
         category = cat,
         priority = task.priority,
-        overdue = task.status ~= 'done' and task.due ~= nil and parse.is_overdue(task.due) or nil,
+        overdue = task.status ~= 'done'
+          and task.status ~= 'cancelled'
+          and task.due ~= nil
+          and parse.is_overdue(task.due)
+          or nil,
         recur = task.recur,
         forge_spans = compute_forge_spans(task, prefix_len),
       })
@@ -299,7 +306,7 @@ function M.priority_view(tasks)
   local done = {}
 
   for _, task in ipairs(tasks) do
-    if task.status == 'done' then
+    if task.status == 'done' or task.status == 'cancelled' then
       table.insert(done, task)
     else
       table.insert(pending, task)
@@ -322,7 +329,7 @@ function M.priority_view(tasks)
 
   for _, task in ipairs(all) do
     local prefix = '/' .. task.id .. '/'
-    local state = task.status == 'done' and 'x' or (task.priority > 0 and '!' or ' ')
+    local state = state_char(task)
     local line = prefix .. '- [' .. state .. '] ' .. task.description
     local prefix_len = #prefix + #('- [' .. state .. '] ')
     table.insert(lines, line)
@@ -334,7 +341,11 @@ function M.priority_view(tasks)
       status = task.status,
       category = task.category,
       priority = task.priority,
-      overdue = task.status ~= 'done' and task.due ~= nil and parse.is_overdue(task.due) or nil,
+      overdue = task.status ~= 'done'
+        and task.status ~= 'cancelled'
+        and task.due ~= nil
+        and parse.is_overdue(task.due)
+        or nil,
       show_category = true,
       recur = task.recur,
       forge_ref = task._extra and task._extra._forge_ref or nil,

plugin/pending.lua

@@ -246,7 +246,7 @@ end, {
         used[word] = true
       end
       local candidates =
-        { 'clear', 'overdue', 'today', 'priority', 'done', 'pending', 'wip', 'blocked' }
+        { 'clear', 'overdue', 'today', 'priority', 'done', 'pending', 'wip', 'blocked', 'cancelled' }
       local store = require('pending.store')
       local s = store.new(store.resolve_path())
       s:load()
@@ -394,6 +394,10 @@ vim.keymap.set('n', '<Plug>(pending-blocked)', function()
   require('pending').toggle_status('blocked')
 end)
 
+vim.keymap.set('n', '<Plug>(pending-cancelled)', function()
+  require('pending').toggle_status('cancelled')
+end)
+
 vim.keymap.set('n', '<Plug>(pending-priority-up)', function()
   require('pending').increment_priority()
 end)