Bug #1321: syck does not escape a plain scalar that starts with `
http://redmine.ruby-lang.org/issues/show/1321

Author: Richard Brown
Status: Open, Priority: Normal
ruby -v: ruby 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux]

According to the YAML-1.0 spec ` is a reserved indicator, and plain scalars cannot start with a reserved indicator. For other indicators syck emits a double quoted scalar instead

Current Behaviour:
ruby -ryaml -e "puts '@'.to_yaml"
--- "@"
ruby -ryaml -e "puts '\`'.to_yaml"
--- `
Intended Behaviour:
ruby -ryaml -e "puts '@'.to_yaml"
--- "@"
ruby -ryaml -e "puts '\`'.to_yaml"
--- "`"

This patch applies to trunk, the 1_8 and 1_8_7 and 1_8_6 branches


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