v3

- range: extmarks/tsquery; renderer: text-change
- mise for dev env
- get rid of obsolete modules
- implement as single file module

examples/splitjoin.lua

@@ -1,6 +1,10 @@
-local vim_repeat = require 'u.repeat'
-local CodeWriter = require 'u.codewriter'
-local Range = require 'u.range'
+--
+-- Split/Join: toggles between single-line and multi-line forms for bracketed expressions.
+-- Example: { a, b, c } <-> {\n  a,\n  b,\n  c\n}
+-- Maps to gS in normal mode.
+--
+local Range = require 'u'.Range
+local vim_repeat = require 'u'.repeat_
 
 local M = {}
 
@@ -8,8 +12,27 @@ local M = {}
 --- @param left string
 --- @param right string
 local function split(bracket_range, left, right)
-  local code = CodeWriter.from_pos(bracket_range.start)
-  code:write_raw(left)
+  local bufnr = bracket_range.start.bufnr
+  local first_line = Range.from_line(bufnr, bracket_range.start.lnum):text()
+  local ws = first_line:match '^%s*'
+  local expandtab = vim.bo[bufnr].expandtab
+  local shiftwidth = vim.bo[bufnr].shiftwidth
+
+  local indent_str, base_indent
+  if expandtab then
+    indent_str = string.rep(' ', shiftwidth)
+    base_indent = math.floor(#ws / shiftwidth)
+  else
+    indent_str = '\t'
+    base_indent = #ws
+  end
+
+  local lines = {}
+  local function write(line, indent_offset)
+    table.insert(lines, indent_str:rep(base_indent + (indent_offset or 0)) .. line)
+  end
+
+  table.insert(lines, left)
 
   local curr = bracket_range.start:next()
   if curr == nil then return end
@@ -27,7 +50,7 @@ local function split(bracket_range, left, right)
       if vim.tbl_contains({ ',', ';' }, curr:char()) then
         -- accumulate item:
         local item = vim.trim(Range.new(last_start, curr):text())
-        if item ~= '' then code:indent():write(item) end
+        if item ~= '' then write(item, 1) end
 
         local next_last_start = curr:next()
         if next_last_start == nil then break end
@@ -45,11 +68,11 @@ local function split(bracket_range, left, right)
   local pos_before_right = bracket_range.stop:must_next(-1)
   if last_start < pos_before_right then
     local item = vim.trim(Range.new(last_start, pos_before_right):text())
-    if item ~= '' then code:indent():write(item) end
+    if item ~= '' then write(item, 1) end
   end
 
-  code:write(right)
-  bracket_range:replace(code.lines)
+  write(right)
+  bracket_range:replace(lines)
 end
 
 --- @param bracket_range u.Range