Ruby

Applied in changeset r57765.

proc.c: documentation for Proc#{call,yield,[]}

• proc.c: [DOC] fix and improve docs for Proc#{call,yield,[]}:

  • change order of Document-method directives as workaround for an
    RDoc rendering problem where the documentation for Proc#call displays
    a "Document-method: []" code block. [ruby-core:79887] [Bug #13273]
  • add missing call-seq and example for Proc#yield
  • remove pointless cross reference to Proc#yield
  • update description for handling of extra or missing arguments,
    improve examples and add cross reference to #lambda?

ruby_2_4 r57923 merged revision(s) 57765.

ruby_2_2 r58105 merged revision(s) 57765.

ruby_2_3 r58185 merged revision(s) 57765.