Bug #9873: YAML conversion of empty symbol

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.1.2
• Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN

[sawa (Tsuyoshi Sawada)]

The yaml gem changes the empty symbol into a string of a colon:

require "yaml"
:"".to_yaml # => "--- ! ':'\n"

So, the following round trip fails to maintain the original:

YAML.load(:"".to_yaml) # => ":"

• Status changed from Open to Closed
• % Done changed from 0 to 100

Applied in changeset r46358.

---

• ext/psych/lib/psych/visitors/yaml_tree.rb: dump empty symbols with a
  tag so that they can be parsed on input. [Bug #9873] [ruby-core:62825]
• test/psych/test_symbol.rb: test for change