Run vimscript function only once although v:count1 > 1

Question

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>

Answer 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 .