bugfix: print(nil)

akkartik

Nov 9, 2024, 4:47 PM

2KACFSV7BYUNP5L4YP6BGFOCJY26VBOCSC243QG4FCR4X37KCRFQC

Dependencies

• [2] I52S4E5F running `print` now appends to output editor
• [3] 7SJHYHMB clean up the setFont gotcha
• [4] YK5FRJWH print to output buffer in all callbacks
• [5] 5OCELN37 bugfix in output editor wrapping
• [6] 2SE2CRDR make print _much_ more efficient
• [*] R5QXEHUI somebody stop me

Change contents

• file addition: 0182-map_nil (----------)
  [8.2]
  + -- like map, but support nils inside arr

  + -- arr must provide its length in an 'n' field,

  + -- as returned by 'unpack'.

  + map_nil = function(arr, f)

  + local result = {}

  + for i=1,arr.n do

  + result[i] = f(arr[i])

  + end

  + result.n = arr.n

  + return result

  + end
• file addition: 0181-pack (----------)
  [8.2]
  + -- like table.pack from Lua 5.2

  + -- https://stackoverflow.com/questions/7183998/in-lua-what-is-the-right-way-to-handle-varargs-which-contains-nil/7186820#7186820

  + pack = function(...)

  + local result = {...}

  + result.n = select('#', ...)

  + return result

  + end
• replacement in 0050-print_to_output at line 2
  [2.1443]→[2.1443:1497](∅→∅)
  − local line = table.concat(map({...}, tostring), ' ')
  [2.1443]

  [2.1497]
  + local args = pack(...)

  + local line = table.concat(map_nil(args, tostring), ' ')