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feat(filter): oil-like editable filter line (#43)

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* feat(filter): oil-like editable filter line with predicate dispatch

Problem: no way to narrow the pending buffer to a subset of tasks
without manual scrolling; filtered-out tasks would be silently deleted
on :w because diff.apply() marks unseen IDs as deleted.

Solution: add a FILTER: line rendered at the top of the buffer when a
filter is active. The line is editable — :w re-parses it and updates
the hidden set. diff.apply() gains a hidden_ids param that prevents
filtered-out tasks from being marked deleted. Predicates: cat:X,
overdue, today, priority (space-separated AND). :Pending filter sets
it programmatically; :Pending filter clear removes it.

* ci: format
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Barrett Ruth 2026-02-26 18:29:56 -05:00 • committed by GitHub
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commit dcb6a4781d
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7 changed files with 526 additions and 8 deletions
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26
plugin/pending.lua
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@ -164,10 +164,34 @@ end, {
bar = true,
nargs = '*',
complete = function(arg_lead, cmd_line)
local subcmds = { 'add', 'archive', 'due', 'edit', 'sync', 'undo' }
local subcmds = { 'add', 'archive', 'due', 'edit', 'filter', 'sync', 'undo' }
if not cmd_line:match('^Pending%s+%S') then
return filter_candidates(arg_lead, subcmds)
end
if cmd_line:match('^Pending%s+filter') then
local after_filter = cmd_line:match('^Pending%s+filter%s+(.*)') or ''
local used = {}
for word in after_filter:gmatch('%S+') do
used[word] = true
end
local candidates = { 'clear', 'overdue', 'today', 'priority' }
local store = require('pending.store')
store.load()
local seen = {}
for _, task in ipairs(store.active_tasks()) do
if task.category and not seen[task.category] then
seen[task.category] = true
table.insert(candidates, 'cat:' .. task.category)
end
end
local filtered = {}
for _, c in ipairs(candidates) do
if not used[c] and (arg_lead == '' or c:find(arg_lead, 1, true) == 1) then
table.insert(filtered, c)
end
end
return filtered
end
if cmd_line:match('^Pending%s+edit') then
return complete_edit(arg_lead, cmd_line)
end