Re: ' in meta value is converted into ’ in a lua filter

[BPJ <melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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The double single quote is how you escape a single quote inside a single
quoted string in YAML. It makes sense because the single quote itself is
the only character which needs to be escaped inside a single quoted string,
and it's unambiguous because two quoted strings after each other without
anything between is a syntax error in YAML.

Den tors 16 maj 2019 10:55jiewuza <jiewuza-9Onoh4P/yGk@public.gmane.org> skrev:

>
> Thanks.
>
> The `double single-quote` stuff is consistent to
> https://github.com/dotmaster/toYaml/issues/1
>
> But it is a little complicated.
>
> BPJ <melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:
>
> > I usually use a code span or code block in the metadata when I want it
> to stringify verbatim with ASCII quotes, dollars, square brackets etc.
> > preserved. The stringification function should turn this into a plain
> string without any change to the Lua code. Note however that since the
> backtick is a
> > reserved character in YAML you must enclose the code span in a single
> quoted string and double any single quotes inside the string:
> >
> > ````pandoc-markdown
> > ---
> > test: '`Children''s cognitive ability`'
> > block: |
> >   ```
> >   Children's cognitive ability.
> >   Several.
> >   Lines.
> >   Of.
> >   Text.
> >   ```
> > ---
> > ````
> >
> > thus in your particular example the backslash escape may be preferable,
> but I definitely prefer the code span/block solution when there are many
> > sensitive characters in the string. A lot of backslash escapes affect
> readability negatively, especially when you need to escape backslashes
> > themselves. For some reason I find `` '`don''t`' `` more readable than
> `` don\'t ``, but YMMV.
> >
> > Den tors 16 maj 2019 09:41jiewuza <jiewuza-9Onoh4P/yGk@public.gmane.org> skrev:
> >
> >  I checked the manual, `smart` has effect on quotes and dashes.
> >  Instead of disabling smart, I have to escape it to minimize the effect.
> >
> >  BTW, if it is for the title value
> >  ```
> >  ---
> >  title: Children's Cognitive Ability
> >  ---
> >  ```
> >
> >  I get the expected result withouth escaping the quote or disabling
> smart:
> >
> >  ```
> >  \title{Children's Cognitive Ability}
> >  ```
> >
> >  Pandoc deals with it differently from a lua filter?
> >
> >  John MacFarlane <jgm-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org> writes:
> >
> >  > YAML metadata fields are interpreted as markdown.
> >  >
> >  > You can escape it to prevent "smartification":
> >  >
> >  >     Children\'s Cognitive Ability
> >  >
> >  > Or disable smartification globally by using `-f
> >  > markdown-smart` on the command line.
> >  >
> >  > jiewuza <jiewuza-9Onoh4P/yGk@public.gmane.org> writes:
> >  >
> >  >> I have some meta value like
> >  >> ```
> >  >> ---
> >  >> test: Children's Cognitive Ability
> >  >> ---
> >  >> ```
> >  >>
> >  >> In my lua filter:
> >  >> ```
> >  >> function Meta(meta)
> >  >>   for k, v in pairs(meta) do
> >  >>     if k=='test' then
> >  >>       print(pandoc.utils.stringify(v))
> >  >>     end
> >  >>   end
> >  >> end
> >  >> ```
> >  >>
> >  >> I find it prints
> >  >> ```
> >  >> Children’s Cognitive Ability
> >  >> ```
> >  >>
> >  >> I want to keep the single quote as it is. What should I do?
> >  >>
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