diff --git a/spec/init_spec.lua b/spec/init_spec.lua
index 5702349..2e9fb5d 100644
--- a/spec/init_spec.lua
+++ b/spec/init_spec.lua
@@ -10,6 +10,14 @@ end
 
 local forge = require('forge')
 
+local function flatten(segments)
+  local parts = {}
+  for _, seg in ipairs(segments) do
+    parts[#parts + 1] = seg[1]
+  end
+  return table.concat(parts)
+end
+
 describe('config', function()
   after_each(function()
     vim.g.forge = nil
@@ -53,7 +61,7 @@ describe('format_pr', function()
   it('formats open PR with state icon', function()
     local entry =
       { number = 42, title = 'fix bug', state = 'OPEN', login = 'alice', created_at = '' }
-    local result = forge.format_pr(entry, fields, true)
+    local result = flatten(forge.format_pr(entry, fields, true))
     assert.truthy(result:find('+'))
     assert.truthy(result:find('#42'))
     assert.truthy(result:find('fix bug'))
@@ -62,20 +70,20 @@ describe('format_pr', function()
   it('formats merged PR', function()
     local entry =
       { number = 7, title = 'add feature', state = 'MERGED', login = 'bob', created_at = '' }
-    local result = forge.format_pr(entry, fields, true)
+    local result = flatten(forge.format_pr(entry, fields, true))
     assert.truthy(result:find('m'))
     assert.truthy(result:find('#7'))
   end)
 
   it('formats closed PR', function()
     local entry = { number = 3, title = 'stale', state = 'CLOSED', login = 'eve', created_at = '' }
-    local result = forge.format_pr(entry, fields, true)
+    local result = flatten(forge.format_pr(entry, fields, true))
     assert.truthy(result:find('x'))
   end)
 
   it('omits state prefix when show_state is false', function()
     local entry = { number = 1, title = 'no state', state = 'OPEN', login = 'dev', created_at = '' }
-    local result = forge.format_pr(entry, fields, false)
+    local result = flatten(forge.format_pr(entry, fields, false))
     assert.truthy(result:find('#1'))
     assert.falsy(result:match('^+'))
   end)
@@ -83,14 +91,14 @@ describe('format_pr', function()
   it('truncates long titles', function()
     local long_title = string.rep('a', 100)
     local entry = { number = 9, title = long_title, state = 'OPEN', login = 'x', created_at = '' }
-    local result = forge.format_pr(entry, fields, false)
+    local result = flatten(forge.format_pr(entry, fields, false))
     assert.falsy(result:find(long_title))
   end)
 
   it('extracts author from table with login field', function()
     local entry =
       { number = 5, title = 't', state = 'OPEN', login = { login = 'nested' }, created_at = '' }
-    local result = forge.format_pr(entry, fields, false)
+    local result = flatten(forge.format_pr(entry, fields, false))
     assert.truthy(result:find('nested'))
   end)
 end)
@@ -107,59 +115,59 @@ describe('format_issue', function()
   it('formats open issue', function()
     local entry =
       { number = 10, title = 'bug report', state = 'open', author = 'alice', created_at = '' }
-    local result = forge.format_issue(entry, fields, true)
+    local result = flatten(forge.format_issue(entry, fields, true))
     assert.truthy(result:find('+'))
     assert.truthy(result:find('#10'))
   end)
 
   it('formats closed issue', function()
     local entry = { number = 11, title = 'done', state = 'closed', author = 'bob', created_at = '' }
-    local result = forge.format_issue(entry, fields, true)
+    local result = flatten(forge.format_issue(entry, fields, true))
     assert.truthy(result:find('x'))
   end)
 
   it('handles opened state (GitLab)', function()
     local entry =
       { number = 12, title = 'mr issue', state = 'opened', author = 'c', created_at = '' }
-    local result = forge.format_issue(entry, fields, true)
+    local result = flatten(forge.format_issue(entry, fields, true))
     assert.truthy(result:find('+'))
   end)
 end)
 
 describe('format_check', function()
   it('maps pass bucket', function()
-    local result = forge.format_check({ name = 'lint', bucket = 'pass' })
+    local result = flatten(forge.format_check({ name = 'lint', bucket = 'pass' }))
     assert.truthy(result:find('%*'))
     assert.truthy(result:find('lint'))
   end)
 
   it('maps fail bucket', function()
-    local result = forge.format_check({ name = 'build', bucket = 'fail' })
+    local result = flatten(forge.format_check({ name = 'build', bucket = 'fail' }))
     assert.truthy(result:find('x'))
   end)
 
   it('maps pending bucket', function()
-    local result = forge.format_check({ name = 'test', bucket = 'pending' })
+    local result = flatten(forge.format_check({ name = 'test', bucket = 'pending' }))
     assert.truthy(result:find('~'))
   end)
 
   it('maps skipping bucket', function()
-    local result = forge.format_check({ name = 'optional', bucket = 'skipping' })
+    local result = flatten(forge.format_check({ name = 'optional', bucket = 'skipping' }))
     assert.truthy(result:find('%-'))
   end)
 
   it('maps cancel bucket', function()
-    local result = forge.format_check({ name = 'cancelled', bucket = 'cancel' })
+    local result = flatten(forge.format_check({ name = 'cancelled', bucket = 'cancel' }))
     assert.truthy(result:find('%-'))
   end)
 
   it('maps unknown bucket', function()
-    local result = forge.format_check({ name = 'mystery', bucket = 'something_else' })
+    local result = flatten(forge.format_check({ name = 'mystery', bucket = 'something_else' }))
     assert.truthy(result:find('%?'))
   end)
 
   it('defaults to pending when bucket is nil', function()
-    local result = forge.format_check({ name = 'none' })
+    local result = flatten(forge.format_check({ name = 'none' }))
     assert.truthy(result:find('~'))
   end)
 end)
@@ -168,7 +176,7 @@ describe('format_run', function()
   it('formats successful run with branch', function()
     local run =
       { name = 'CI', branch = 'main', status = 'success', event = 'push', created_at = '' }
-    local result = forge.format_run(run)
+    local result = flatten(forge.format_run(run))
     assert.truthy(result:find('%*'))
     assert.truthy(result:find('CI'))
     assert.truthy(result:find('main'))
@@ -183,7 +191,7 @@ describe('format_run', function()
       event = 'workflow_dispatch',
       created_at = '',
     }
-    local result = forge.format_run(run)
+    local result = flatten(forge.format_run(run))
     assert.truthy(result:find('x'))
     assert.truthy(result:find('manual'))
   end)
@@ -191,13 +199,13 @@ describe('format_run', function()
   it('maps in_progress status', function()
     local run =
       { name = 'Test', branch = '', status = 'in_progress', event = 'push', created_at = '' }
-    local result = forge.format_run(run)
+    local result = flatten(forge.format_run(run))
     assert.truthy(result:find('~'))
   end)
 
   it('maps cancelled status', function()
     local run = { name = 'Old', branch = '', status = 'cancelled', event = 'push', created_at = '' }
-    local result = forge.format_run(run)
+    local result = flatten(forge.format_run(run))
     assert.truthy(result:find('%-'))
   end)
 end)
@@ -242,39 +250,39 @@ describe('relative_time via format_pr', function()
   it('shows minutes for recent timestamps', function()
     local ts = os.date('%Y-%m-%dT%H:%M:%SZ', os.time() - 120)
     local entry = { n = 1, t = 'x', s = 'open', a = 'u', ts = ts }
-    local result = forge.format_pr(entry, fields, false)
+    local result = flatten(forge.format_pr(entry, fields, false))
     assert.truthy(result:match('%d+m'))
   end)
 
   it('shows hours', function()
     local ts = os.date('%Y-%m-%dT%H:%M:%SZ', os.time() - 7200)
     local entry = { n = 1, t = 'x', s = 'open', a = 'u', ts = ts }
-    local result = forge.format_pr(entry, fields, false)
+    local result = flatten(forge.format_pr(entry, fields, false))
     assert.truthy(result:match('%d+h'))
   end)
 
   it('shows days', function()
     local ts = os.date('%Y-%m-%dT%H:%M:%SZ', os.time() - 172800)
     local entry = { n = 1, t = 'x', s = 'open', a = 'u', ts = ts }
-    local result = forge.format_pr(entry, fields, false)
+    local result = flatten(forge.format_pr(entry, fields, false))
     assert.truthy(result:match('%d+d'))
   end)
 
   it('returns empty for nil timestamp', function()
     local entry = { n = 1, t = 'x', s = 'open', a = 'u', ts = nil }
-    local result = forge.format_pr(entry, fields, false)
+    local result = flatten(forge.format_pr(entry, fields, false))
     assert.truthy(result)
   end)
 
   it('returns empty for empty string timestamp', function()
     local entry = { n = 1, t = 'x', s = 'open', a = 'u', ts = '' }
-    local result = forge.format_pr(entry, fields, false)
+    local result = flatten(forge.format_pr(entry, fields, false))
     assert.truthy(result)
   end)
 
   it('returns empty for garbage timestamp', function()
     local entry = { n = 1, t = 'x', s = 'open', a = 'u', ts = 'not-a-date' }
-    local result = forge.format_pr(entry, fields, false)
+    local result = flatten(forge.format_pr(entry, fields, false))
     assert.truthy(result)
   end)
 end)
diff --git a/spec/sources_spec.lua b/spec/sources_spec.lua
index 9a33f0f..802b4d8 100644
--- a/spec/sources_spec.lua
+++ b/spec/sources_spec.lua
@@ -86,7 +86,10 @@ describe('github', function()
   end)
 
   it('preserves in_progress status in normalize_run', function()
-    assert.equals('in_progress', gh:normalize_run({ databaseId = 1, status = 'in_progress' }).status)
+    assert.equals(
+      'in_progress',
+      gh:normalize_run({ databaseId = 1, status = 'in_progress' }).status
+    )
   end)
 end)