create an extension point to let users override wiki page lookups

[trashhalo]

Intent

I wish to use vim to edit my notes but my main notes editor is https://obsidian.md. They allow fuzzy links like [[Bunny]] goes to a Bunny.md file that can exist anywhere in your tree. This is different from wiki.vim link behavior.

How

Allow users to define a function named WikiSearchCommand that takes wiki_root and fname and outputs the transformed fname.

Example usage

In my vimrc to get wiki.vim to support obsidian links:

function! WikiSearchCommand(wiki_root, fname)
  let files = systemlist(printf('pushd %s && fd -e "md" "%s" |tail -n1 && popd', a:wiki_root, a:fname))
  return get(files, 0, a:fname)
endfunction

[lervag]

Thanks for the suggestion and the PR! My initial thought is that you are on to something that looks smart, but that I will probably want to make some adjustments before merging this. I have a busy weekend, so I will not be able to give a detailed response and review until probably Monday or Tuesday, but stay tuned. I will get back to you as soon as I get the time!

[trashhalo]

Thanks for the suggestion and the PR! My initial thought is that you are on to something that looks smart, but that I will probably want to make some adjustments before merging this. I have a busy weekend, so I will not be able to give a detailed response and review until probably Monday or Tuesday, but stay tuned. I will get back to you as soon as I get the time!

Yay! I'm not a vimscript dev so I was just hacking my way to it working. 💯 Change everything!

[lervag]

I changed this quite abit, but I think it should still work as you want it to. Try the following settings:

function! WikiSearchCommand(fname, origin)
  if empty(a:fname) | return a:origin | endif

  call wiki#paths#pushd(wiki#get_root())
  let files = systemlist(printf('fd -e "md" "%s" |tail -n1', a:fname))
  call map(files, {_, x -> fnamemodify(x, ':p')})
  call wiki#paths#popd()

  return get(files, 0, a:fname)
endfunction

let g:wiki_resolver = 'WikiSearchCommand'

See :help wiki_resolver for the help text. Note that the return value must be an absolute path. And please, let me know what you think.