From a1a8d1db3bc08c25d465705d50e5fffbe4677f04 Mon Sep 17 00:00:00 2001
From: Barrett Ruth <br.barrettruth@gmail.com>
Date: Wed, 25 Feb 2026 13:04:29 -0500
Subject: [PATCH] feat(buffer): add PendingRecur highlight and recurrence
 virtual text

Problem: recurring tasks have no visual indicator in the buffer,
and the extmark logic uses a rigid if/elseif chain that does not
compose well with additional virtual text fields.

Solution: add PendingRecur highlight group linking to DiagnosticInfo.
Refactor apply_extmarks() to build virtual text parts dynamically,
appending category, recurrence indicator, and due date as separate
composable segments. Set omnifunc on the pending buffer.
---
 lua/pending/buffer.lua | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/lua/pending/buffer.lua b/lua/pending/buffer.lua
index d11254b..14636ea 100644
--- a/lua/pending/buffer.lua
+++ b/lua/pending/buffer.lua
@@ -55,6 +55,7 @@ local function set_buf_options(bufnr)
   vim.bo[bufnr].swapfile = false
   vim.bo[bufnr].filetype = 'pending'
   vim.bo[bufnr].modifiable = true
+  vim.bo[bufnr].omnifunc = 'v:lua.require("pending.complete").omnifunc'
 end
 
 ---@param winid integer
@@ -122,24 +123,22 @@ local function apply_extmarks(bufnr, line_meta)
     local row = i - 1
     if m.type == 'task' then
       local due_hl = m.overdue and 'PendingOverdue' or 'PendingDue'
-      if m.show_category then
-        local virt_text
-        if m.category and m.due then
-          virt_text = { { m.category .. '  ', 'PendingHeader' }, { m.due, due_hl } }
-        elseif m.category then
-          virt_text = { { m.category, 'PendingHeader' } }
-        elseif m.due then
-          virt_text = { { m.due, due_hl } }
+      local virt_parts = {}
+      if m.show_category and m.category then
+        table.insert(virt_parts, { m.category, 'PendingHeader' })
+      end
+      if m.recur then
+        table.insert(virt_parts, { '\u{21bb} ' .. m.recur, 'PendingRecur' })
+      end
+      if m.due then
+        table.insert(virt_parts, { m.due, due_hl })
+      end
+      if #virt_parts > 0 then
+        for p = 1, #virt_parts - 1 do
+          virt_parts[p][1] = virt_parts[p][1] .. '  '
         end
-        if virt_text then
-          vim.api.nvim_buf_set_extmark(bufnr, task_ns, row, 0, {
-            virt_text = virt_text,
-            virt_text_pos = 'eol',
-          })
-        end
-      elseif m.due then
         vim.api.nvim_buf_set_extmark(bufnr, task_ns, row, 0, {
-          virt_text = { { m.due, due_hl } },
+          virt_text = virt_parts,
           virt_text_pos = 'eol',
         })
       end
@@ -167,6 +166,7 @@ local function setup_highlights()
   vim.api.nvim_set_hl(0, 'PendingOverdue', { link = 'DiagnosticError', default = true })
   vim.api.nvim_set_hl(0, 'PendingDone', { link = 'Comment', default = true })
   vim.api.nvim_set_hl(0, 'PendingPriority', { link = 'DiagnosticWarn', default = true })
+  vim.api.nvim_set_hl(0, 'PendingRecur', { link = 'DiagnosticInfo', default = true })
 end
 
 local function snapshot_folds(bufnr)