YAML Ain't Markup Language

Hi Joachim,

The YAML spec does not allow unquoted values to start with an indicator 
character.  The `%` indicates a YAML directive, as in:

%YAML 1.1


On 11/24/2011 09:37 AM, j.wuttke wrote:
> In my previous mail I indicated a problem with a string consisting of just
> one percent sign. Actually the same problem with libyaml (as opposed to Syck)
> occurs for _all_ strings _starting_ with a percent sign.
>
> (I urgently need to know whether this is a bug in libyaml or whether I am
> writing incorrect YAML. My production files are full of entries like "format: %4i")
>
> - Joachim
>
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'%' cannot start any scalar according to the YAML 1.1. It is used for escaping.
See http://yaml.org/spec/1.1/#id871856 -
"A limited form of 8-bit escaping is available using the “%” character."


-
Andrey



On Thu, Nov 24, 2011 at 3:37 PM, j.wuttke <j.wuttke@...> wrote:
> In my previous mail I indicated a problem with a string consisting of just
> one percent sign. Actually the same problem with libyaml (as opposed to Syck)
> occurs for _all_ strings _starting_ with a percent sign.
>
> (I urgently need to know whether this is a bug in libyaml or whether I am
> writing incorrect YAML. My production files are full of entries like "format: %4i")
>
> - Joachim
>

I think it only defines the directive if there is no indentation.
(http://yaml.org/spec/1.1/#id895217)
"Each directive is specified on a separate _non-indented_ line
starting with the “%” indicator, followed by the directive name and a
space-separated list of parameters."

-
Andrey


On Thu, Nov 24, 2011 at 4:08 PM, Kirill Simonov <xi@...> wrote:
> Hi Joachim,
>
> The YAML spec does not allow unquoted values to start with an indicator
> character.  The `%` indicates a YAML directive, as in:
>
> %YAML 1.1
>
>