crash on assginments with do ... end blocks

[pas-f]

Metadata

• Operating system: WSL2(CentOS)
• Ruby version: jruby-9.2.19.0
• Node version: 16.14.2
• @prettier/plugin-ruby or prettier gem version: latest
• Options:
  • rubyArrayLiteral - true
  • rubyHashLabel - true
  • rubyModifier - true
  • rubySingleQuote - false
  • rubyToProc - false
  • trailingComma - "none"

Input

Just putting the following line in an empty .rb file and formatting it, crashes the formatter.

b = t.map do |x| x + 10 end

log:

["ERROR" - 9:58:21 AM] Error formatting document.
["ERROR" - 9:58:21 AM] Cannot read properties of undefined (reading 'body')
TypeError: Cannot read properties of undefined (reading 'body')
	at printBlockWithBraces (/project/path/node_modules/@prettier/plugin-ruby/dist/ruby/nodes/blocks.js:40:91)
	at Object.print (/project/path/node_modules/@prettier/plugin-ruby/dist/ruby/printer.js:54:16)
       ...

Yes, the line isn't in line with most style guides. We actually arrive there by first splitting a long assignment over multiple lines, then a second rule replaces {...} with do...end on multi lines blocks. On the next run, we get the crash.

We run prettier and plugin-ruby from a visual studio code server on WSL2/CentOS, I haven't set it up, so I may be missing some details on the configuration and formatting rules.

[kddnewton]

Hmm, I'm not seeing this error at all on main. Are you sure you're using the latest release?

[kddnewton]

Oh interesting I see you're using JRuby, let me check that out.

[kddnewton]

Ah-ha! It's a JRuby bug. Thanks for the report I'll get this fixed.

[kddnewton]

Ahh... unfortunately this is a known bug with JRuby (jruby/jruby#6642).

[kddnewton]

Fixed by #1199