Bug #17858: Trailing comma after a `&block` parameter cause a syntax error

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN

[byroot (Jean Boussier)]

Something I just noticed:

some_long_method(
  1,
  &block, # syntax error, unexpected ',', expecting ')'
)

Which seems inconsistent to me as it works for regular parameters:

some_long_method(
  1,
  2,
)

I'm not sure if this is an intended limitation or just an oversight.

[matz (Yukihiro Matsumoto)]

• Status changed from Open to Closed

It is intended. &block argument must come at the end of arguments. Nothing comes after.

Matz.

[byroot (Jean Boussier)]

• Related to Feature #19107: Allow trailing comma in method signature added