Re: convert markdown to html in new tab

On Friday, January 10, 2014 3:06:44 PM UTC-6, Jacobo de Vera wrote:
> On Fri, Jan 10, 2014 at 7:03 PM, Rick Dooling <rpdoo.com> wrote:
>
> >
>
> >> > This one grabs the buffer contents, converts it to HTML, and sends it to the clipboard for pasting into WordPress or whatever.
>
> >>
>
> >> > " Send Text Through Filter To Clipboard:
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> >> > " http://vim.wikia.com/wiki/Use_filter_commands_to_process_text
>
> >> > function! MDC()
>
> >> > :redir @+
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> >> > " No output file specified so it goes to STDOUT
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> >> > exe '!pandoc %'
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> >> > :redir END
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> >> > endfunction
>
> >>
>
> >> > This morning I was monkeying with using Python in Vim to do this. That also works. Then you can use Python's Markdown module.
>
> >>
>
> >> But does it though? From what I see the line:
>
> >>
>
> >> exe '!pandoc %'
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> >>
>
> >> Is running pandoc with the *file* open in the current buffer as input,
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> >> which means you have to have a file and you have to save it in order
>
> >> for it to work. This is similar to what was shown in previous emails,
>
> >> but what I was wondering is whether one can use something similar that
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> >> uses buffer contents, not file contents.
>
> >>
>
>
>
> >
>
> > if no file is specified with -o in pandoc it goes to STDOUT, and you are using redir to redirect STOUT to the clipboard. At least that's how I understand it.
>
> >
>
> > Another scripting angle, esp. using Python or Ruby is just run the commands, save the file, and tell vim to open the file in a new buffer.
>
> >
>
> > Now that I've been playing, the redirect to the clipboard is actually even more useful, because you can use Marked2 or some other html converter/viewer to check things before loading your html up to go paste.
>
> >
>
> > Rick
>
> >
>
>
>
> Rick, I think you and I are talking about two different things here. I
>
> am talking about the input and you are talking about the output. So
>
> yes, pandoc sends its output to stdout, which is captured by Vim. But
>
> the input, it takes from a file name, which is the value after
>
> replacing '%' on that exe line.
>
>
>
> Say you create a new file, then write some markdown, and, before
>
> saving, you run that function. You'd get nothing, because pandoc
>
> receives, as input, an empty file. Pandoc, and many other programs,
>
> however, support getting their input from stdin. In vim you can send
>
> the contents of the current buffer to a process' stdin, and then the
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> process' stdout replaces those contents, just like when one does:
>
>
>
> :%!sort
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>
>
> What I was trying to ask is. How does one send those unsaved contents
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> to a program without getting them replaced with the output of such
>
> program, but instead get the output in a separate tab? The function
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> you sent provides a solution for the second part, since it will
>
> redirect output to a variable or a register. Now we are only missing
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> the first part, which we nearly have, but it uses files, rather than
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> buffer contents.
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>
>
> Hope that clarifies my question a little.
>
>
>
> Regards,
>
>
>
> --
>
> Jacobo de Vera
>
> http://www.jacobodevera.com
>
> @jovianjake

I think I am not the person to answer. I have never tried to do anything with buffer contents before saving them as a file. In fact, my maps often begin with :w<CR> to make sure that the save happens first, or I guess :up<CR>. I think it would be a bad idea to attempt anything with a filter or external program on an unsaved file. One error and poof.

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