Issues

• rubocop CLI as a compile target: status after decision 428, the two blockers (decision 140's infinite range end, compile time), open items

  jtarchie/rugaroo#149 · Filter by author jtarchie opened on Oct 31, 2026

• with fiddle can we infer types from the extern, struct, etc declarations when using static strings?

  jtarchie/rugaroo#148 · Filter by author jtarchie opened on Oct 31, 2026

• Support $_ (last line read by gets), scoped per method as MRI's

  enhancement
  jtarchie/rugaroo#147 · Filter by author jtarchie opened on Oct 30, 2026

• Opt-in flag to read never-assigned instance variables as nil in user code (only if a real program needs it)

  enhancement
  jtarchie/rugaroo#146 · Filter by author jtarchie opened on Oct 30, 2026

• Enumerable: missing call forms (min/max with a block, inject(:sym), sum(init), member?, chain, ...)

  enhancement
  jtarchie/rugaroo#145 · Filter by author jtarchie opened on Oct 29, 2026

• TinyGo as an experimental build target (-target tinygo)

  jtarchie/rugaroo#144 · Filter by author jtarchie opened on Oct 29, 2026

• bm_point_in_polygon: Float ivar arrays fall back to untyped in the default nil mode; Integer#* overflow path costs spills (spinel 5.6x)

  jtarchie/rugaroo#141 · Filter by author jtarchie opened on Oct 27, 2026
  1

• String#length, #[] and short String#+ still cost per call in character loops (bm_template, bm_json_parse)

  jtarchie/rugaroo#139 · Filter by author jtarchie opened on Oct 27, 2026

• Array#[] result of String?, Symbol? and other value T? still aliases the Array's storage (rest of #133)

  jtarchie/rugaroo#138 · Filter by author jtarchie opened on Oct 27, 2026
  1

• Per-string encoding: force_encoding/encoding remember the encoding (needs a decision)

  enhancement
  jtarchie/rugaroo#131 · Filter by author jtarchie opened on Oct 26, 2026

• Lazy#compact on nilable non-leaf objects, and $! outside rescue => e

  enhancement
  jtarchie/rugaroo#130 · Filter by author jtarchie opened on Oct 26, 2026

• String#<< through a parameter or attribute: out-parameter rewrite or mutable String (decision 382 follow-up)

  enhancement
  jtarchie/rugaroo#128 · Filter by author jtarchie opened on Oct 26, 2026
  2

• Instance variable assigned several types: type it as a union (spinel bm_poly_cells)

  enhancement
  jtarchie/rugaroo#127 · Filter by author jtarchie opened on Oct 26, 2026

• Immutable user classes as Go value structs (no heap allocation per object)

  enhancement
  jtarchie/rugaroo#119 · Filter by author jtarchie opened on Oct 26, 2026
  1

• Opt-in profile-guided optimization: rugaroo build --pgo

  jtarchie/rugaroo#116 · Filter by author jtarchie opened on Oct 26, 2026

• ruby/spec gaps vs spinel: 3,106 examples spinel passes and rb2go does not, grouped by cause

  enhancement
  jtarchie/rugaroo#114 · Filter by author jtarchie opened on Oct 24, 2026
  2

• Prism (require "prism") in compiled programs via the embedded prism.wasm

  jtarchie/rugaroo#112 · Filter by author jtarchie opened on Oct 24, 2026

• Prelude audit: the 680 untyped signatures that could infer from callers or take rbs stdlib's type (decision 317 follow-up)

  enhancement
  jtarchie/rugaroo#106 · Filter by author jtarchie opened on Oct 19, 2026

• Gem types: read rbs collection dirs, finish rack 3/rackup/cuba sigs, type brew's untyped sends (lever 4)

  enhancement
  jtarchie/rugaroo#105 · Filter by author jtarchie opened on Oct 19, 2026
  5

• Run unmodified Sinatra: class << self statements, boot-alias ordering, and route blocks whose self is an app instance (#82 follow-up)

  jtarchie/rugaroo#103 · Filter by author jtarchie opened on Oct 18, 2026
  1

• rb2go build: skip Go debug info (DWARF) by default to cut compile memory ~25%

  jtarchie/rugaroo#97 · Filter by author jtarchie opened on Oct 11, 2026

• Run unmodified Roda: boot-time eval/define_method methods, boot objects, per-route capture types (#82 follow-up)

  jtarchie/rugaroo#94 · Filter by author jtarchie opened on Oct 9, 2026

• A class or module statement inside a block: declare it at compile time

  enhancement
  jtarchie/rugaroo#80 · Filter by author jtarchie opened on Oct 7, 2026