[ruby-core:18355] [Bug #459] Scanf Seems to Have Issues with Single Digit Integers

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James Gray

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Aug 20, 2008, 2:34:37 PM8/20/08

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Bug #459: Scanf Seems to Have Issues with Single Digit Integers
http://redmine.ruby-lang.org/issues/show/459

Author: James Gray
Status: Open, Priority: Normal

Switching a trivial example to use single digit integers causes scanf() to perform unexpectedly:

$ ruby -r scanf -e '"Name James Age 32 Name Greg Age 22".scanf("Name %s Age %i") { |name, age| p [name, age] }'
["James", 32]
["Greg", 22]
$ ruby -r scanf -e '"Name James Computers 2 Name Greg Computers 4".scanf("Name %s Age %i") { |name, age| p [name, age] }'
["James", nil]

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James Gray

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Aug 20, 2008, 2:42:42 PM8/20/08

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Issue #459 has been updated by James Gray.

I apologize, that second example had multiple errors. Here's the correct example, still broken:

$ ruby -r scanf -e '"Name James Computers 2 Name Greg Computers 4".scanf("Name %s Computers %i") { |name, count| p [name, count] }'
["James", nil]

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http://redmine.ruby-lang.org/issues/show/459