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I have a function that accepts a count of iterations, its command is defined with -range:

command -nargs=1 -range DocbkPrintTag :call s:DocbkPrintTag(<f-args>)

and to output

<listitem>
<para>
</para>
</listitem>

I map it followingly:

nnoremap <unique> <localleader>li :<C-U>DocbkPrintTag li<CR>

the <listitem> is defined in a custom dictionary as

let s:tags.li = { 'tag': 'listitem', 'type': 'outline', 'include': ['pa'] }

while <para> ['pa'] is defined as

let s:tags.pa = { 'tag': 'para', 'type': 'outline' }

The DocbkPrintTag function calls another function DocbkRenderTag which assembles the XML output for a tag, possibly rendering it n-times if count is specified on a keyboard before the mapping itself. The problem is that for the case of , I call DocbkRenderTag recursively from itself to first render <para/> as an inside element of <listitem/>. Everyhing works fine for 1 repetition, but if i want to print 2 or more such structures, the v:count1 parameter is passed over to the inner function calling but the inner tag should be repeated only once. How can i force to do the inner function call only once?

For completeness, here is the important part of the code:

if !exists(":DocbkPrintTag")
  command -nargs=1 -range DocbkPrintTag :call s:DocbkPrintTag(<f-args>)
endif

function s:DocbkPrintTag(tag)
  let result = s:DocbkRenderTag(a:tag)
  if !empty(result)
    call feedkeys('a' . result, 'n')
  endif
endfunction

function s:DocbkRenderTag(tag)
  [...]
  let result = ''
  " number of repetitions
  let i = 1
  while i <= v:count1 
    [...]
    if !empty(include)
      for incl_tag in include
        let incl_result .= s:DocbkRenderTag(incl_tag)
      endfor
    endif
    [...]
  endwhile
  return result
endfunction

The output now is for example

<listitem><para></para><para></para></listitem>
<listitem><para></para><para></para></listitem>

instead of just

<listitem><para></para></listitem>
<listitem><para></para></listitem>
2
  • 2
    I think your question would be easier to understand if you gave us a bit more code to understand what you are doing: You could create a minimal example to reproduce your behavior (we don't need the whole tag rendering for example) which would help people to help you.
    – statox
    Jul 1, 2019 at 12:03
  • Still missing code related to v:count1. You should also describe how you invoke your command.
    – dedowsdi
    Jul 2, 2019 at 8:08

1 Answer 1

1

There are two <para> because you apply v:count1 to every tag you render. Try this:

function s:DocbkPrintTag(tag)

  " apply v:count1 to the outside tag
  put =repeat(s:DocbkRenderTag(a:tag), v:count1)
endfunction

function s:DocbkRenderTag(tag)
  ...

  " render single tag here
  if !empty(include)
    for incl_tag in include
      let incl_result .= s:DocbkRenderTag(incl_tag)
    endfor
  endif
  ...
endfunction

IMO, raw command with :h :command-completion-customlist is way better than map here. v:count1 can be replaced with :h optional-function-argument .

3
  • Thank you for your hint, but: i'm writing a lot of DocBook text, and i need a fast access to render complex DocBook structures. for example, after pressing ,7il i expect to render whole <itemizedlist> with 7 <listitem><para></para></listitem> inside. i dont want to call a function, that's too much keypresses for me Jul 2, 2019 at 11:25
  • You can create a map like this nnoremap ,d :DocbkPrintTag<space>, then you only need to type ,dlistitem 7, the listitem can be completed with <tab>. Did my answer solve the v:count1 > 1 problem? It feels like you didn't think it did.
    – dedowsdi
    Jul 2, 2019 at 11:37
  • Your proposed way with repeat() works perfectly! Thanks! Jul 2, 2019 at 12:45

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