Different text width in the same filetype in vim

Question

I am editing my markdown files which contain some code examples (like here). Is there any way to tell vim, when it is editing markdown files, to set textwidth=80 to everything except where I keep my code syntax? So for example:

Here is a text within a markdown file // textwidth=80

    puts 'Hello World' // textwidth is not specified

yup, but it is indented 4 spaces, and markdown recognises that as code so it uses special syntax highlighting. — oFca
– oFca, Commented May 21, 2013 at 21:13

Ingo Karkat · Accepted Answer · 2013-05-22 07:11:00Z

2

You can change the 'textwidth' setting dynamically with an :autocmd:

:autocmd CursorMoved,CursorMovedI <buffer> let &textwidth = (getline('.') =~# '^    ' ? 0 : 80)

This checks for Markdown code (indented by 4 spaces), and then clears the textwidth.

answered May 22, 2013 at 7:11

Ingo Karkat

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Kent · Accepted Answer · 2013-05-21 22:45:12Z

1

I don't know how to simply set tw option to meet your requirement. However I came up with a function, it could do what you want:

function! WrapMD()
   let x=&tw
   let &tw=80
   normal! gqq
   let &tw=x
endfunction

this function just does format with tw=80 on current line, after that restores your original tw setting.

You can source the function (or put it in your vimrc), and then do:

:v/\v^( {4}|\t)/call WrapMD()

at any time when you want to format your MD text.

You could also create a mapping for that or put it in a autocmd on event BufWritePre.

Here I made a gif when I test the function:

enter image description here

answered May 21, 2013 at 22:45

Kent

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glts · Accepted Answer · 2013-05-27 16:21:00Z

1

I frequently use pandoc to tidy up markdown: pandoc -t markdown will wrap markdown, but not code blocks. It also nicely tidies up lists and block quotes. The vim-pandoc plugin sets 'equalprg' to pandoc -t markdown --reference-links.

edited May 27, 2013 at 16:21

glts

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answered May 27, 2013 at 3:17

David Sanson

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