ruby / ruby/psych

Dates with 5 digit years can not deserialized

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#483 2 comments 0 reactions 0 assignees View on GitHub

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Dominant language
Ruby
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597
Forks
223
Avg merge
11h 23m
Merged PRs (30d)
3

Description

require 'time'
require 'yaml'

date = DateTime.parse('22018-01-05')
serialized_date = YAML.dump(date)
YAML.load(serialized_date)
# => fails with NoMethodError: undefined method `captures' for nil:NilClass

This is because the regex for parsing a Date, in ScalarScanner, expects a 4 digit year.

The year is actually incorrect and should have been validated before being saved. It has made it in to our data.

Please close if you think this is too much of an edge case to be considered.

On the other hand 5 digit years are legit.

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Research direction

Reproduce the failure with the Ruby snippet in the issue, then inspect lib/psych/scalar_scanner.rb around the Date regex at line 113. Confirm how a five-digit year is parsed and define completion as successfully loading the dumped DateTime without the captures error, while preserving valid date handling.

Written by the indexing model from the issue text.

Assessment

Tech stack
ruby
Domain
tooling
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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