Bug #11873: Syntax error and parse problem when calling a method without parentheses

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin14]
• Backport: 2.2: DONTNEED, 2.3: DONTNEED, 2.4: DONE

[tompng (tomoya ishida)]

In the following case, syntax error rises when calling a method without parentheses.

a b{c d}, :e do end #=> syntax error(should be syntax ok)
a b(c d), :e do end #=> syntax error(should be syntax ok)
a b{c(d)}, :e do end #=> syntax ok(expected)
a b(c(d)), :e do end #=> syntax ok(expected)

If you change the literal :e to a method name, then the do-block is passed to the wrong method

p p{p p;p(p)}, tap do puts 'Hello' end
#=> LocalJumpError(expected. do-end is passed to the first p)
p p{p(p);p p}, tap do puts 'Hello' end
#=> shows Hello(why? do-end is passed to tap)

versions are

1.8.7-p375
1.9.3-p547
2.1.1p76
2.2.0p0
2.3.0p0

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset r56198.

---

parse.y: do after cmdarg in paren

• parse.y: do after cmdarg in parentheses should be do_block
  and bound to the outer method. [ruby-core:72482] [Bug #11873]

[whitequark (whitequark *)]

Will this change be backported?

[vo.x (Vit Ondruch)]

• Related to Bug #12900: TestSyntax#test_block_after_cmdarg_in_paren fails on PPC64 added

[nobu (Nobuyoshi Nakada)]

• Related to Bug #12789: syntax error keyword_do_block at ruby 2.4.0dev (2016-09-26 trunk 56254) added

[nobu (Nobuyoshi Nakada)]

• Related to Bug #13547: [].delete 1 { 'NG' } added

[usa (Usaku NAKAMURA)]

• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN to 2.2: DONTNEED, 2.3: DONTNEED, 2.4: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.2: DONTNEED, 2.3: DONTNEED, 2.4: REQUIRED to 2.2: DONTNEED, 2.3: DONTNEED, 2.4: DONE

ruby_2_4 r59406 merged revision(s) 58638,58640.