Re: YAML closing delimiter

[John MacFarlane <jgm-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org>]

+++ BP Jonsson [Oct 19 15 10:50 ]:
>Den 2015-10-19 kl. 07:12, skrev John MacFarlane:
>>+++ BPJ [Oct 18 15 10:58 ]:
>>>  Try
>>>
>>>  pandoc -t markdown [1]in.md | perl -ple's/^\.\.\.$/---/' >out.md
>>
>>This will probably work well enough in most cases, but what
>>if your document has a line with `...` that isn't a YAML
>>header closer?  (E.g. in a fenced code block?)  It will get
>>converted to `---` too, won't it?
>>
>
>I thought the same right after I hit send. There is a trick which will 
>replace only the first match in the file, which is usually what you 
>want in this case:
>
>   pandoc -t markdown in.md | perl -ple'$seen ||= s/^\.\.\.$/---/' >>out.md

Thanks for that.  I puzzled for some time trying to figure
out how to do this!  Seems like it ought to be simpler.