Ruby Issue Tracking System

09/03/2026

04:20 PM Ruby Bug #22287: Prism aborts in pm_newline_list_append when requiring a file after fork

Having trouble reproducing anything here. Are you able to share the file it crashed on? Any chance there are a bunch of weird heredocs in there? (I'm shooting in the dark here a bit.) kddnewton (Kevin Newton)

08/27/2026

04:56 PM Ruby Revision 12e5584d (git): [ruby/prism] Warn on duplicated key with **hash only

Previously we were just checking the token, which meant something
like `{ a: 1, **{a: 2}.select { false } }` would warn. As esoteric
as this is, it was possible. This also happily gets rid of the
current_hash_keys field on parser, making... kddnewton (Kevin Newton)

04:32 PM Ruby Misc #22272: Propose Kevin Menard (@nirvdrum) as a core committer

+1 Kevin would be a great addition kddnewton (Kevin Newton)

08/25/2026

06:24 PM Ruby Bug #22264 (Closed): Warning missing from parse.y hash literals

$ ruby --parser=parse.y -cve '{**{}, a: 1, **{a: 2}}'
ruby 4.1.0dev (2026-04-21T02:07:14Z aot be86d5704f) [arm64-darwin23]
Syntax OK
$ ruby --parser=parse.y -cve '{a: 1, **{a: 2}}'
ruby 4.1.0dev (2026-04-21T02:07:14Z aot be86d5704f)... kddnewton (Kevin Newton)

03:26 PM Ruby Misc #22262: OSS-Fuzz `fuzz_prism` target never calls `ruby_init()`, so Prism is not being fuzzed

You should open an issue on the google oss-fuzz repo, I didn't even know that thing existed. It is clearly wrong. kddnewton (Kevin Newton)

08/11/2026

12:18 PM Ruby Revision dff4de9a (git): [ruby/prism] Revert "Revert "Split up newline token""

This reverts commit https://github.com/ruby/prism/commit/115d58f71bdc.
https://github.com/ruby/prism/commit/9175663b7a kddnewton (Kevin Newton)

08/06/2026

01:52 AM Ruby Revision 918fed9d (git): [ruby/prism] Revert "Split up newline token"

This reverts commit https://github.com/ruby/prism/commit/3dbe592a76cb.
https://github.com/ruby/prism/commit/115d58f71b kddnewton (Kevin Newton)

01:17 AM Ruby Revision 1db6f0fe (git): [ruby/prism] Split up newline token

There are actually 3 tokens in the Ruby grammar: the newline in a
whitespace insensitive position that is ignored, a newline that is
in a whitespace sensitive position that acts as a statement
terminator, and a newline in a whitespace se... kddnewton (Kevin Newton)

08/05/2026

11:02 AM Ruby Revision 5e36630f (git): [ruby/prism] Split up lbrace token

This also more closely matches parse.y, and makes it easier to
delineate which brace belongs to which type.
https://github.com/ruby/prism/commit/43ed8c1f80 kddnewton (Kevin Newton)

11:02 AM Ruby Revision 0017dea3 (git): [ruby/prism] Split up backtick token

Now we fully match parse.y, and it is clearer to distinguish
betewen backticks that are used for method names and backticks
that begin xstring literals.
https://github.com/ruby/prism/commit/a33c3ff7fe kddnewton (Kevin Newton)