feat(forge): support bare repo-level forge refs (#135) (#140)

Problem: Forge refs required an issue/PR number (`gh:user/repo#42`).
Users wanting to link a repo without a specific issue had no option.

Solution: Accept `gh:user/repo` shorthand and `https://github.com/user/repo`
URLs as `type='repo'` refs with `number=nil`. These conceal and render
virtual text like numbered refs but skip all API calls (no validate, no
fetch, no close). `format_label` strips `#%n` for bare refs. Omnifunc
offers both `owner/repo#` and `owner/repo` completions.

Closes #135

lua/pending/complete.lua

@@ -194,9 +194,15 @@ function M.omnifunc(findstart, base)
           local key = ref.owner .. '/' .. ref.repo
           if not seen[key] then
             seen[key] = true
-            local word = key .. '#'
+            local word_num = key .. '#'
-            if base == '' or word:sub(1, #base) == base then
+            if base == '' or word_num:sub(1, #base) == base then
-              table.insert(matches, { word = word, menu = '[' .. source .. ']' })
+              table.insert(matches, { word = word_num, menu = '[' .. source .. ']' })
+            end
+            if base == '' or key:sub(1, #base) == base then
+              table.insert(
+                matches,
+                { word = key, menu = '[' .. source .. ']', info = 'Bare repo link' }
+              )
             end
           end
         end

lua/pending/forge.lua

@@ -5,8 +5,8 @@ local log = require('pending.log')
 ---@field forge string
 ---@field owner string
 ---@field repo string
----@field type 'issue'|'pull_request'|'merge_request'
+---@field type 'issue'|'pull_request'|'merge_request'|'repo'
----@field number integer
+---@field number? integer
 ---@field url string
 
 ---@class pending.ForgeCache
@@ -27,7 +27,7 @@ local log = require('pending.log')
 ---@field auth_status_args string[]
 ---@field default_icon string
 ---@field default_issue_format string
----@field _auth 'unknown'|'ok'|'failed'
+---@field _auth? 'unknown'|'ok'|'failed'
 ---@field parse_url fun(self: pending.ForgeBackend, url: string): pending.ForgeRef?
 ---@field api_args fun(self: pending.ForgeBackend, ref: pending.ForgeRef): string[]
 ---@field parse_state fun(self: pending.ForgeBackend, decoded: table): 'open'|'closed'|'merged'
@@ -157,11 +157,16 @@ function M._parse_shorthand(token)
     return nil
   end
   local owner, repo, number = rest:match('^([%w%.%-_]+)/([%w%.%-_]+)#(%d+)$')
-  if not owner then
+  if owner then
-    return nil
-  end
     local num = tonumber(number) --[[@as integer]]
-  local url = 'https://' .. backend.default_host .. '/' .. owner .. '/' .. repo .. '/issues/' .. num
+    local url = 'https://'
+      .. backend.default_host
+      .. '/'
+      .. owner
+      .. '/'
+      .. repo
+      .. '/issues/'
+      .. num
     return {
       forge = backend.name,
       owner = owner,
@@ -170,6 +175,18 @@ function M._parse_shorthand(token)
       number = num,
       url = url,
     }
+  end
+  owner, repo = rest:match('^([%w%.%-_]+)/([%w%.%-_]+)$')
+  if not owner then
+    return nil
+  end
+  return {
+    forge = backend.name,
+    owner = owner,
+    repo = repo,
+    type = 'repo',
+    url = 'https://' .. backend.default_host .. '/' .. owner .. '/' .. repo,
+  }
 end
 
 ---@param url string
@@ -261,7 +278,7 @@ end
 ---@return string[]
 function M._api_args(ref)
   local backend = _by_name[ref.forge]
-  if not backend then
+  if not backend or not ref.number then
     return {}
   end
   return backend:api_args(ref)
@@ -278,12 +295,15 @@ function M.format_label(ref, cache)
   local default_icon = backend and backend.default_icon or ''
   local default_fmt = backend and backend.default_issue_format or '%i %o/%r#%n'
   local fmt = forge_cfg.issue_format or default_fmt
+  if ref.type == 'repo' then
+    fmt = fmt:gsub('#?%%n', ''):gsub('%s+$', '')
+  end
   local icon = forge_cfg.icon or default_icon
   local text = fmt
     :gsub('%%i', icon)
     :gsub('%%o', ref.owner)
     :gsub('%%r', ref.repo)
-    :gsub('%%n', tostring(ref.number))
+    :gsub('%%n', ref.number and tostring(ref.number) or '')
   local hl = 'PendingForge'
   if cache then
     if cache.state == 'closed' or cache.state == 'merged' then
@@ -296,6 +316,10 @@ end
 ---@param ref pending.ForgeRef
 ---@param callback fun(cache: pending.ForgeCache?, err: pending.ForgeFetchError?)
 function M.fetch_metadata(ref, callback)
+  if ref.type == 'repo' then
+    callback(nil)
+    return
+  end
   local args = M._api_args(ref)
   vim.system(args, { text = true }, function(result)
     if result.code ~= 0 or not result.stdout or result.stdout == '' then
@@ -351,7 +375,12 @@ function M.refresh(s)
   local tasks = s:tasks()
   local by_forge = {} ---@type table<string, pending.Task[]>
   for _, task in ipairs(tasks) do
-    if task.status ~= 'deleted' and task._extra and task._extra._forge_ref then
+    if
+      task.status ~= 'deleted'
+      and task._extra
+      and task._extra._forge_ref
+      and task._extra._forge_ref.type ~= 'repo'
+    then
       local fname = task._extra._forge_ref.forge
       if not by_forge[fname] then
         by_forge[fname] = {}
@@ -419,11 +448,15 @@ end
 function M.validate_refs(refs)
   local by_forge = {} ---@type table<string, pending.ForgeRef[]>
   for _, ref in ipairs(refs) do
+    if ref.type == 'repo' then
+      goto skip_ref
+    end
     local fname = ref.forge
     if not by_forge[fname] then
       by_forge[fname] = {}
     end
     table.insert(by_forge[fname], ref)
+    ::skip_ref::
   end
   for fname, forge_refs in pairs(by_forge) do
     if not M.is_configured(fname) or not _by_name[fname] then
@@ -461,15 +494,7 @@ function M.gitea_forge(opts)
       _ensure_instances()
       local host, owner, repo, kind, number =
         url:match('^https?://([^/]+)/([%w%.%-_]+)/([%w%.%-_]+)/(%a+)/(%d+)$')
-      if not host then
+      if host and (kind == 'issues' or kind == 'pulls') and _by_host[host] == self then
-        return nil
-      end
-      if kind ~= 'issues' and kind ~= 'pulls' then
-        return nil
-      end
-      if _by_host[host] ~= self then
-        return nil
-      end
         local num = tonumber(number) --[[@as integer]]
         local ref_type = kind == 'pulls' and 'pull_request' or 'issue'
         return {
@@ -480,6 +505,18 @@ function M.gitea_forge(opts)
           number = num,
           url = url,
         }
+      end
+      host, owner, repo = url:match('^https?://([^/]+)/([%w%.%-_]+)/([%w%.%-_]+)/?$')
+      if host and _by_host[host] == self then
+        return {
+          forge = self.name,
+          owner = owner,
+          repo = repo,
+          type = 'repo',
+          url = url,
+        }
+      end
+      return nil
     end,
     api_args = function(self, ref)
       local endpoint = ref.type == 'pull_request' and 'pulls' or 'issues'
@@ -511,15 +548,7 @@ M.register({
     _ensure_instances()
     local host, owner, repo, kind, number =
       url:match('^https?://([^/]+)/([%w%.%-_]+)/([%w%.%-_]+)/(%a+)/(%d+)$')
-    if not host then
+    if host and (kind == 'issues' or kind == 'pull') and _by_host[host] == self then
-      return nil
-    end
-    if kind ~= 'issues' and kind ~= 'pull' then
-      return nil
-    end
-    if _by_host[host] ~= self then
-      return nil
-    end
       local num = tonumber(number) --[[@as integer]]
       local ref_type = kind == 'pull' and 'pull_request' or 'issue'
       return {
@@ -530,6 +559,18 @@ M.register({
         number = num,
         url = url,
       }
+    end
+    host, owner, repo = url:match('^https?://([^/]+)/([%w%.%-_]+)/([%w%.%-_]+)/?$')
+    if host and _by_host[host] == self then
+      return {
+        forge = 'github',
+        owner = owner,
+        repo = repo,
+        type = 'repo',
+        url = url,
+      }
+    end
+    return nil
   end,
   api_args = function(_, ref)
     return {
@@ -560,19 +601,9 @@ M.register({
   parse_url = function(self, url)
     _ensure_instances()
     local host, path, kind, number = url:match('^https?://([^/]+)/(.+)/%-/([%w_]+)/(%d+)$')
-    if not host then
+    if host and (kind == 'issues' or kind == 'merge_requests') and _by_host[host] == self then
-      return nil
-    end
-    if kind ~= 'issues' and kind ~= 'merge_requests' then
-      return nil
-    end
-    if _by_host[host] ~= self then
-      return nil
-    end
       local owner, repo = path:match('^(.+)/([^/]+)$')
-    if not owner then
+      if owner then
-      return nil
-    end
         local num = tonumber(number) --[[@as integer]]
         local ref_type = kind == 'merge_requests' and 'merge_request' or 'issue'
         return {
@@ -583,6 +614,25 @@ M.register({
           number = num,
           url = url,
         }
+      end
+    end
+    host, path = url:match('^https?://([^/]+)/(.+)$')
+    if host and _by_host[host] == self then
+      local trimmed = path:gsub('/$', '')
+      if not trimmed:find('/%-/') then
+        local owner, repo = trimmed:match('^(.+)/([^/]+)$')
+        if owner then
+          return {
+            forge = 'gitlab',
+            owner = owner,
+            repo = repo,
+            type = 'repo',
+            url = url,
+          }
+        end
+      end
+    end
+    return nil
   end,
   api_args = function(_, ref)
     local encoded = (ref.owner .. '/' .. ref.repo):gsub('/', '%%2F')
@@ -616,15 +666,7 @@ M.register({
     _ensure_instances()
     local host, owner, repo, kind, number =
       url:match('^https?://([^/]+)/([%w%.%-_]+)/([%w%.%-_]+)/(%a+)/(%d+)$')
-    if not host then
+    if host and (kind == 'issues' or kind == 'pulls') and _by_host[host] == self then
-      return nil
-    end
-    if kind ~= 'issues' and kind ~= 'pulls' then
-      return nil
-    end
-    if _by_host[host] ~= self then
-      return nil
-    end
       local num = tonumber(number) --[[@as integer]]
       local ref_type = kind == 'pulls' and 'pull_request' or 'issue'
       return {
@@ -635,6 +677,18 @@ M.register({
         number = num,
         url = url,
       }
+    end
+    host, owner, repo = url:match('^https?://([^/]+)/([%w%.%-_]+)/([%w%.%-_]+)/?$')
+    if host and _by_host[host] == self then
+      return {
+        forge = 'codeberg',
+        owner = owner,
+        repo = repo,
+        type = 'repo',
+        url = url,
+      }
+    end
+    return nil
   end,
   api_args = function(_, ref)
     local endpoint = ref.type == 'pull_request' and 'pulls' or 'issues'

spec/forge_spec.lua

@@ -44,12 +44,30 @@ describe('forge', function()
       assert.is_nil(forge._parse_shorthand('xx:user/repo#1'))
     end)
 
-    it('rejects missing number', function()
+    it('parses bare gh: shorthand without number', function()
-      assert.is_nil(forge._parse_shorthand('gh:user/repo'))
+      local ref = forge._parse_shorthand('gh:user/repo')
+      assert.is_not_nil(ref)
+      assert.equals('github', ref.forge)
+      assert.equals('user', ref.owner)
+      assert.equals('repo', ref.repo)
+      assert.equals('repo', ref.type)
+      assert.is_nil(ref.number)
+      assert.equals('https://github.com/user/repo', ref.url)
+    end)
+
+    it('parses bare gl: shorthand without number', function()
+      local ref = forge._parse_shorthand('gl:group/project')
+      assert.is_not_nil(ref)
+      assert.equals('gitlab', ref.forge)
+      assert.equals('group', ref.owner)
+      assert.equals('project', ref.repo)
+      assert.equals('repo', ref.type)
+      assert.is_nil(ref.number)
     end)
 
     it('rejects missing repo', function()
       assert.is_nil(forge._parse_shorthand('gh:user#1'))
+      assert.is_nil(forge._parse_shorthand('gh:user'))
     end)
   end)
 
@@ -73,6 +91,23 @@ describe('forge', function()
     it('rejects non-github URL', function()
       assert.is_nil(forge._parse_github_url('https://example.com/user/repo/issues/1'))
     end)
+
+    it('parses bare repo URL', function()
+      local ref = forge._parse_github_url('https://github.com/user/repo')
+      assert.is_not_nil(ref)
+      assert.equals('github', ref.forge)
+      assert.equals('user', ref.owner)
+      assert.equals('repo', ref.repo)
+      assert.equals('repo', ref.type)
+      assert.is_nil(ref.number)
+    end)
+
+    it('parses bare repo URL with trailing slash', function()
+      local ref = forge._parse_github_url('https://github.com/user/repo/')
+      assert.is_not_nil(ref)
+      assert.equals('repo', ref.type)
+      assert.is_nil(ref.number)
+    end)
   end)
 
   describe('_parse_gitlab_url', function()
@@ -98,6 +133,16 @@ describe('forge', function()
       assert.equals('org/sub', ref.owner)
       assert.equals('project', ref.repo)
     end)
+
+    it('parses bare repo URL', function()
+      local ref = forge._parse_gitlab_url('https://gitlab.com/group/project')
+      assert.is_not_nil(ref)
+      assert.equals('gitlab', ref.forge)
+      assert.equals('group', ref.owner)
+      assert.equals('project', ref.repo)
+      assert.equals('repo', ref.type)
+      assert.is_nil(ref.number)
+    end)
   end)
 
   describe('_parse_codeberg_url', function()
@@ -116,6 +161,16 @@ describe('forge', function()
       assert.is_not_nil(ref)
       assert.equals('pull_request', ref.type)
     end)
+
+    it('parses bare repo URL', function()
+      local ref = forge._parse_codeberg_url('https://codeberg.org/user/repo')
+      assert.is_not_nil(ref)
+      assert.equals('codeberg', ref.forge)
+      assert.equals('user', ref.owner)
+      assert.equals('repo', ref.repo)
+      assert.equals('repo', ref.type)
+      assert.is_nil(ref.number)
+    end)
   end)
 
   describe('parse_ref', function()
@@ -141,6 +196,14 @@ describe('forge', function()
       assert.is_nil(forge.parse_ref('hello'))
       assert.is_nil(forge.parse_ref('due:tomorrow'))
     end)
+
+    it('dispatches bare shorthand', function()
+      local ref = forge.parse_ref('gh:user/repo')
+      assert.is_not_nil(ref)
+      assert.equals('github', ref.forge)
+      assert.equals('repo', ref.type)
+      assert.is_nil(ref.number)
+    end)
   end)
 
   describe('find_refs', function()
@@ -184,6 +247,17 @@ describe('forge', function()
       assert.equals(0, refs[1].start_byte)
       assert.equals(8, refs[1].end_byte)
     end)
+
+    it('finds bare shorthand ref', function()
+      local refs = forge.find_refs('Fix gh:user/repo')
+      assert.equals(1, #refs)
+      assert.equals('github', refs[1].ref.forge)
+      assert.equals('repo', refs[1].ref.type)
+      assert.is_nil(refs[1].ref.number)
+      assert.equals('gh:user/repo', refs[1].raw)
+      assert.equals(4, refs[1].start_byte)
+      assert.equals(16, refs[1].end_byte)
+    end)
   end)
 
   describe('_api_args', function()
@@ -262,6 +336,30 @@ describe('forge', function()
       assert.equals('PendingForgeClosed', hl)
     end)
 
+    it('formats bare repo ref without #N', function()
+      local text = forge.format_label({
+        forge = 'github',
+        owner = 'user',
+        repo = 'repo',
+        type = 'repo',
+        url = '',
+      }, nil)
+      assert.truthy(text:find('user/repo'))
+      assert.is_nil(text:find('#'))
+    end)
+
+    it('still formats numbered ref with #N', function()
+      local text = forge.format_label({
+        forge = 'github',
+        owner = 'user',
+        repo = 'repo',
+        type = 'issue',
+        number = 42,
+        url = '',
+      }, nil)
+      assert.truthy(text:find('user/repo#42'))
+    end)
+
     it('uses closed highlight for merged state', function()
       local _, hl = forge.format_label({
         forge = 'gitlab',
@@ -542,4 +640,19 @@ describe('forge diff integration', function()
     assert.equals(1, updated._extra._forge_ref.number)
     os.remove(tmp)
   end)
+
+  it('stores bare forge_ref in _extra on new task', function()
+    local tmp = os.tmpname()
+    local s = store.new(tmp)
+    s:load()
+    diff.apply({ '- [ ] Check out gh:user/repo' }, s)
+    local tasks = s:active_tasks()
+    assert.equals(1, #tasks)
+    assert.is_not_nil(tasks[1]._extra)
+    assert.is_not_nil(tasks[1]._extra._forge_ref)
+    assert.equals('github', tasks[1]._extra._forge_ref.forge)
+    assert.equals('repo', tasks[1]._extra._forge_ref.type)
+    assert.is_nil(tasks[1]._extra._forge_ref.number)
+    os.remove(tmp)
+  end)
 end)