diff --git a/lua/u/buffer.lua b/lua/u/buffer.lua
index 238249f..4e83d7e 100644
--- a/lua/u/buffer.lua
+++ b/lua/u/buffer.lua
@@ -24,7 +24,9 @@ function Buffer.current() return Buffer.from_nr(0) end
 --- @param listed boolean
 --- @param scratch boolean
 --- @return u.Buffer
-function Buffer.create(listed, scratch) return Buffer.from_nr(vim.api.nvim_create_buf(listed, scratch)) end
+function Buffer.create(listed, scratch)
+  return Buffer.from_nr(vim.api.nvim_create_buf(listed, scratch))
+end
 
 function Buffer:set_tmp_options()
   self:set_option('bufhidden', 'delete')
@@ -36,7 +38,9 @@ end
 function Buffer:get_option(nm) return vim.api.nvim_get_option_value(nm, { buf = self.bufnr }) end
 
 --- @param nm string
-function Buffer:set_option(nm, val) return vim.api.nvim_set_option_value(nm, val, { buf = self.bufnr }) end
+function Buffer:set_option(nm, val)
+  return vim.api.nvim_set_option_value(nm, val, { buf = self.bufnr })
+end
 
 --- @param nm string
 function Buffer:get_var(nm) return vim.api.nvim_buf_get_var(self.bufnr, nm) end
diff --git a/lua/u/logger.lua b/lua/u/logger.lua
index 22e97a6..07fdf04 100644
--- a/lua/u/logger.lua
+++ b/lua/u/logger.lua
@@ -1,7 +1,9 @@
 local M = {}
 
 --- @params name string
-function M.file_for_name(name) return vim.fs.joinpath(vim.fn.stdpath 'cache', 'u.log', name .. '.log.jsonl') end
+function M.file_for_name(name)
+  return vim.fs.joinpath(vim.fn.stdpath 'cache', 'u.log', name .. '.log.jsonl')
+end
 
 --------------------------------------------------------------------------------
 -- Logger class
@@ -30,7 +32,10 @@ end
 function Logger:write(level, ...)
   local data = { ... }
   if #data == 1 then data = data[1] end
-  (vim.uv or vim.loop).fs_write(self.fd, vim.json.encode { ts = os.date(), level = level, data = data } .. '\n')
+  (vim.uv or vim.loop).fs_write(
+    self.fd,
+    vim.json.encode { ts = os.date(), level = level, data = data } .. '\n'
+  )
 end
 
 function Logger:trace(...) self:write('INFO', ...) end
diff --git a/lua/u/pos.lua b/lua/u/pos.lua
index adc0c89..0331308 100644
--- a/lua/u/pos.lua
+++ b/lua/u/pos.lua
@@ -2,7 +2,9 @@ local MAX_COL = vim.v.maxcol
 
 --- @param bufnr number
 --- @param lnum number 1-based
-local function line_text(bufnr, lnum) return vim.api.nvim_buf_get_lines(bufnr, lnum - 1, lnum, false)[1] end
+local function line_text(bufnr, lnum)
+  return vim.api.nvim_buf_get_lines(bufnr, lnum - 1, lnum, false)[1]
+end
 
 --- @class u.Pos
 --- @field bufnr number buffer number
@@ -54,7 +56,9 @@ end
 
 function Pos.__lt(a, b) return a.lnum < b.lnum or (a.lnum == b.lnum and a.col < b.col) end
 function Pos.__le(a, b) return a < b or a == b end
-function Pos.__eq(a, b) return Pos.is(a) and Pos.is(b) and a.bufnr == b.bufnr and a.lnum == b.lnum and a.col == b.col end
+function Pos.__eq(a, b)
+  return Pos.is(a) and Pos.is(b) and a.bufnr == b.bufnr and a.lnum == b.lnum and a.col == b.col
+end
 function Pos.__add(x, y)
   if type(x) == 'number' then
     x, y = y, x
@@ -202,7 +206,9 @@ end
 --- @return u.Pos|nil
 function Pos:find_match(max_chars, invocations)
   if invocations == nil then invocations = {} end
-  if vim.tbl_contains(invocations, function(p) return self == p end, { predicate = true }) then return nil end
+  if vim.tbl_contains(invocations, function(p) return self == p end, { predicate = true }) then
+    return nil
+  end
   table.insert(invocations, self)
 
   local openers = { '{', '[', '(', '<' }
@@ -212,7 +218,10 @@ function Pos:find_match(max_chars, invocations)
   local is_closer = vim.tbl_contains(closers, c)
   if not is_opener and not is_closer then return nil end
 
-  local i, _ = vim.iter(is_opener and openers or closers):enumerate():find(function(_, c2) return c == c2 end)
+  local i, _ = vim
+    .iter(is_opener and openers or closers)
+    :enumerate()
+    :find(function(_, c2) return c == c2 end)
   -- Store the character we will be looking for:
   local c_match = (is_opener and closers or openers)[i]
 
@@ -255,7 +264,14 @@ end
 --- @param lines string|string[]
 function Pos:insert_before(lines)
   if type(lines) == 'string' then lines = vim.split(lines, '\n') end
-  vim.api.nvim_buf_set_text(self.bufnr, self.lnum - 1, self.col - 1, self.lnum - 1, self.col - 1, lines)
+  vim.api.nvim_buf_set_text(
+    self.bufnr,
+    self.lnum - 1,
+    self.col - 1,
+    self.lnum - 1,
+    self.col - 1,
+    lines
+  )
 end
 
 return Pos
diff --git a/lua/u/range.lua b/lua/u/range.lua
index 03d195b..337f613 100644
--- a/lua/u/range.lua
+++ b/lua/u/range.lua
@@ -37,7 +37,13 @@ function Range.new(start, stop, mode)
 
     local _1 = posstr(r.start)
     local _2 = posstr(r.stop)
-    return string.format('Range{bufnr=%d, mode=%s, start=%s, stop=%s}', r.start.bufnr, r.mode, _1, _2)
+    return string.format(
+      'Range{bufnr=%d, mode=%s, start=%s, stop=%s}',
+      r.start.bufnr,
+      r.mode,
+      _1,
+      _2
+    )
   end
   setmetatable(r, { __index = Range, __tostring = str })
   return r
@@ -164,7 +170,10 @@ function Range.from_motion(motion, opts)
     stop = stop:find_next(-1, motion_rest) or stop
   end
 
-  if opts.contains_cursor and not Range.new(start, stop):contains(Pos.new(unpack(original_state.cursor))) then
+  if
+    opts.contains_cursor
+    and not Range.new(start, stop):contains(Pos.new(unpack(original_state.cursor)))
+  then
     return nil
   end
 
@@ -246,7 +255,9 @@ function Range.smallest(ranges)
   return smallest
 end
 
-function Range:clone() return Range.new(self.start:clone(), self.stop ~= nil and self.stop:clone() or nil, self.mode) end
+function Range:clone()
+  return Range.new(self.start:clone(), self.stop ~= nil and self.stop:clone() or nil, self.mode)
+end
 function Range:line_count()
   if self:is_empty() then return 0 end
   return self.stop.lnum - self.start.lnum + 1
@@ -310,7 +321,8 @@ function Range:line(l)
   if l < 0 then l = self:line_count() + l + 1 end
   if l > self:line_count() then return end
 
-  local line_indices = vim.fn.getregionpos(self.start:as_vim(), self.stop:as_vim(), { type = self.mode })
+  local line_indices =
+    vim.fn.getregionpos(self.start:as_vim(), self.stop:as_vim(), { type = self.mode })
   local line_bounds = line_indices[l]
 
   local start = Pos.new(unpack(line_bounds[1]))
@@ -329,7 +341,9 @@ function Range:replace(replacement)
   local function update_stop_non_linewise()
     local new_last_line_num = self.start.lnum + #replacement - 1
     local new_last_col = #(replacement[#replacement] or '')
-    if new_last_line_num == self.start.lnum then new_last_col = new_last_col + self.start.col - 1 end
+    if new_last_line_num == self.start.lnum then
+      new_last_col = new_last_col + self.start.col - 1
+    end
     self.stop = Pos.new(bufnr, new_last_line_num, new_last_col)
   end
   local function update_stop_linewise()
@@ -399,7 +413,9 @@ end
 --- @param amount number
 function Range:must_shrink(amount)
   local shrunk = self:shrink(amount)
-  if shrunk == nil or shrunk:is_empty() then error 'error in Range:must_shrink: Range:shrink() returned nil' end
+  if shrunk == nil or shrunk:is_empty() then
+    error 'error in Range:must_shrink: Range:shrink() returned nil'
+  end
   return shrunk
 end
 
diff --git a/lua/u/renderer.lua b/lua/u/renderer.lua
index 36c4980..4617372 100644
--- a/lua/u/renderer.lua
+++ b/lua/u/renderer.lua
@@ -218,7 +218,8 @@ function Renderer:_reconcile() -- {{{
       self:_set_lines(lnum0, lnum0, true, { line_change.item })
     elseif line_change.kind == 'change' then
       -- Compute inter-line diff, and apply:
-      local col_changes = H.levenshtein(vim.split(line_change.from, ''), vim.split(line_change.to, ''))
+      local col_changes =
+        H.levenshtein(vim.split(line_change.from, ''), vim.split(line_change.to, ''))
 
       for _, col_change in ipairs(col_changes) do
         local cnum0 = col_change.index - 1
@@ -310,7 +311,15 @@ function Renderer:get_pos_infos(pos0) -- {{{
   -- because the NeoVim API is over-inclusive in what it returns:
   --- @type RendererExtmark[]
   local intersecting_extmarks = vim
-    .iter(vim.api.nvim_buf_get_extmarks(self.bufnr, self.ns, pos0, pos0, { details = true, overlap = true }))
+    .iter(
+      vim.api.nvim_buf_get_extmarks(
+        self.bufnr,
+        self.ns,
+        pos0,
+        pos0,
+        { details = true, overlap = true }
+      )
+    )
     --- @return RendererExtmark
     :map(function(ext)
       --- @type number, number, number, { end_row?: number; end_col?: number }|nil
diff --git a/lua/u/tracker.lua b/lua/u/tracker.lua
index f4c3563..b3f43ef 100644
--- a/lua/u/tracker.lua
+++ b/lua/u/tracker.lua
@@ -37,7 +37,10 @@ function Signal:set(value)
   -- We don't handle cyclic updates:
   if self.changing then
     if M.debug then
-      vim.notify('circular dependency detected' .. (self.name and (' in ' .. self.name) or ''), vim.log.levels.WARN)
+      vim.notify(
+        'circular dependency detected' .. (self.name and (' in ' .. self.name) or ''),
+        vim.log.levels.WARN
+      )
     end
     return
   end
@@ -143,7 +146,10 @@ function Signal:debounce(ms)
     local now_ms = (vim.uv or vim.loop).hrtime() / 1e6
 
     -- If there is anything older than `ms` in our queue, emit it:
-    local older_than_ms = vim.iter(state.queued):filter(function(item) return now_ms - item.ts > ms end):totable()
+    local older_than_ms = vim
+      .iter(state.queued)
+      :filter(function(item) return now_ms - item.ts > ms end)
+      :totable()
     local last_older_than_ms = older_than_ms[#older_than_ms]
     if last_older_than_ms then
       filtered:set(last_older_than_ms.value)
diff --git a/stylua.toml b/stylua.toml
index 6ee49d6..6bfe2c0 100644
--- a/stylua.toml
+++ b/stylua.toml
@@ -1,6 +1,6 @@
 call_parentheses = "None"
 collapse_simple_statement = "Always"
-column_width = 120
+column_width = 100
 indent_type = "Spaces"
 indent_width = 2
 quote_style = "AutoPreferSingle"