Add fuzzy tools to vim and shell

In vim:
Use <leader>c to insert a bibtex reference in your text. By default it
is a pandoc reference (@bibref), but it can be changed to latex style
(\cite(bibref)). <leader>CM inserts a pretty-printed reference to the
selected work, using markdown styling. If you want to insert a citation
while writing, use @@ from insertmode to insert the bibref instead.

The settings add two commands: :CiteRef and :CitePretty which call the
respective functions. You can pass any amount of .bibtex libraries to
the commands and they will be available to fuzzy search through.

:CiteEdit also added to fuzzy find a source and open it in vim for editing.
The function is not working yet, I have to find a way to go from the
fuzzy finder to papis, select the correct file and edit it in vim.

In Shell:
Can cd directories (d, D), open files (f, F), open most recently used
(ru), and edit bibtex references (ref). lowercase is a weighted view
over previously used directories/files, Uppercase is a search of the
whole file structure.

Still outstanding:
Needs the same comfort function additions as vim search, especially
reference search. (i.e., open corresponding document, yank path, open
editor,...)

.config/nvim/init.vim

@@ -55,7 +55,10 @@ Plug 'reedes/vim-textobj-sentence' " extends the capabilities of sentence detect
 " " Plug 'tpope/vim-fugitive' - Will have to take a closer look some other time
 Plug 'scrooloose/nerdtree', { 'on': 'NERDTreeToggle' } " show a directory listing within vim
 Plug 'Xuyuanp/nerdtree-git-plugin', { 'on': 'NERDTreeToggle' } " show git status in nerdtree for files and dirs
-Plug 'Yggdroot/LeaderF', { 'on': ['Leaderf', 'LeaderfFile', 'LeaderfBuffer'], 'do': './install.sh' } " fuzzy matcher, apparently faster than fzf, ctrlp, unit, denite
+
+" Fuzzy matching
+Plug 'lotabout/skim.vim'
+Plug 'marty-oehme/notational-fzf-vim'
 Plug 'dyng/ctrlsf.vim'
 
 " Language Integration
@@ -216,6 +219,77 @@ endfunction
 autocmd! User GoyoEnter nested call <SID>goyo_enter()
 autocmd! User GoyoLeave nested call <SID>goyo_leave()
 
+" PLUGIN: fzf-bibtex
+" Citation and Bibtex utilities
+let g:bibtex_cache = '/home/marty/.cache/'
+let g:bibtex_source = '/home/marty/Nextcloud/Library/academia/academia.bib'
+
+function! Bibtex_ls(...)
+  return 'bibtex-ls -cache ' . g:bibtex_cache . ' ' . g:bibtex_source . ' ' . join(a:000, ' ')
+endfunction
+
+" insert citation from insert mode at cursor
+function! s:bibtex_cite_sink_insert(lines)
+    let r=system("bibtex-cite ", a:lines)
+    execute ':normal! i' . r
+    call feedkeys('a', 'n')
+endfunction
+inoremap <silent> @@ <c-g>u<c-o>:call skim#run({
+                        \ 'source': Bibtex_ls(),
+                        \ 'sink*': function('<sid>bibtex_cite_sink_insert'),
+                        \ 'up': '25%',
+                        \ 'options': '--ansi --multi --prompt "Cite> "'})<CR>
+
+" insert citation from normal mode at cursor
+function! s:bibtex_cite_sink(lines)
+    let r=system("bibtex-cite ", a:lines)
+    execute ':normal! i' . r
+endfunction
+command! -bang -nargs=* CiteRef call skim#run({
+      \ 'source': Bibtex_ls(<q-args>),
+      \ 'sink*': function('<sid>bibtex_cite_sink'),
+      \ 'up': '25%',
+      \ 'options': '--ansi --multi --prompt "Cite> "'
+      \ })
+
+" insert pretty formatted markdown reference
+function! s:bibtex_markdown_sink(lines)
+  let r=system("bibtex-markdown " . g:bibtex_source, a:lines)
+  echo join(a:lines, '; ')
+  execute ':normal! i' . r
+endfunction
+command! -bang -nargs=* CitePretty call skim#run({
+      \ 'source': Bibtex_ls(<q-args>),
+      \ 'sink*': function('<sid>bibtex_markdown_sink'),
+      \ 'up': '25%',
+      \ 'options': '--ansi --multi --prompt "Markdown> "'
+      \ })
+
+" edit the document info.yaml
+" needs papis to function
+" could be abstracted out to work with .bib file or the papis .yaml
+" TODO THESE FUNCTIONS DO NOT WORK YET. NEED TO FIND A WAY TO GO FROM fzf ->
+" papis -> editor
+function! s:bibtex_edit_info_sink(lines)
+  echom "edit info sink: " . join(a:lines, ",")
+  let r=system("bibtex-cite ", a:lines)
+  let s=system("papis edit ref=\"" . join(a:lines,"") . "\"")
+  " execute ':e s'
+  echo s
+endfunction
+command! -bang -nargs=* CiteEdit call skim#run({
+      \ 'source': Bibtex_ls(<q-args>),
+      \ 'sink*': function('<sid>bibtex_edit_info_sink'),
+      \ 'up': '25%',
+      \ 'options': join([
+                  \ '--ansi',
+                  \ '--with-nth=..',
+                  \ '--preview-window=:wrap',
+                  \ '--prompt "Edit> "',
+                  \ '--preview=''papis edit -e cat ref="echo {} | bibtex-cite" '' ',
+                  \ ])
+      \})
+
 " PLUGIN: vim-go
 " change the tabstops for go to use tabs and a width of 4
 " this conforms with the gofmt expectations
@@ -445,9 +519,44 @@ au FileType go nnoremap <F9> :GoCoverageToggle -short<cr>
 " go to the definition of whatever you hover over
 au FileType go nnoremap <F12> <Plug>(go-def)
 
-" Call leaderf with <leader-f> (necessary to enable leaderf lazyloading)
+" skim.vim (fzf alternative) fuzzy finding configuration
-nnoremap <leader>F :LeaderfFile<cr>
+" extra key bindings in skim window
-nnoremap <leader>f :LeaderfBuffer<cr>
+let g:skim_action = {
+  \ 'ctrl-t': 'tab split',
+  \ 'ctrl-h': 'split',
+  \ 'ctrl-v': 'vsplit' }
+
+command! -bang -nargs=* Rg call fzf#vim#rg_interactive(<q-args>, fzf#vim#with_preview('right:50%:hidden', 'alt-h'))
+
+" FZF buffers and files in current workdir
+noremap <leader>s :Buffers<cr>
+" FZF most recently used / MRU, bound to S since it is essentially a larger
+" go-back intention than just buffers
+noremap <leader>S :History<cr>
+noremap <leader>f :Files<cr>
+
+" FZF general full-text search in cwd with rg
+noremap <C-F> :Rg<cr>
+" FZF note full-text search with notational-velocity like functions
+noremap <leader>n :NV<cr>
+noremap <leader>N :NV!<cr>
+
+" FZF git diff
+noremap <leader>gd :GFiles?<cr>
+
+" Configure notational-fzf-vim
+let g:nv_search_paths = [ g:wiki_root ]
+let g:nv_wrap_preview_text=1
+" Dictionary with string keys and values. Must be in the form 'ctrl-KEY':
+" 'command' or 'alt-KEY' : 'command'. See examples below.
+let g:nv_fzf_binds = [
+      \ 'alt-a:select-all',
+      \ 'alt-q:deselect-all',
+      \ 'alt-p:toggle-preview',
+      \ 'alt-u:page-up',
+      \ 'alt-d:page-down',
+      \ 'ctrl-w:backward-kill-word',
+      \ ]
 
 function! SearchWiki()
   let l:curpath=getcwd()
@@ -458,26 +567,17 @@ function! SearchWiki()
   :execute(":cd " . l:curpath)
 endfunction
 
-function! RgWiki()
-  let l:curpath=getcwd()
-  :execute(":cd " . g:wiki_root)
-  let l:texttofind=input("Search Notes: ")
-  if l:texttofind ==? ""
-    :execute(":Leaderf rg")
-  else
-    :execute(":Leaderf rg -e " . l:texttofind )
-  endif
-  :execute(":cd " . l:curpath)
-endfunction
-
 " search in wiki with ctrlsf, in fullscreen window
 nnoremap <leader>wF :execute(":call SearchWiki()")<cr>
 " fuzzy search wiki with leaderf
 nnoremap <leader>wf :execute(":call RgWiki()")<cr>
-" fuzzy search current working dir
-nnoremap <C-F> :execute(":Leaderf rg")<cr>
 vnoremap <C-F> <Plug>CtrlSFVwordPath
 
+" insert a citation of a source using bib ref (uses academia library)
+nnoremap <leader>c :CiteRef<cr>
+" insert a pretty printed Markdown version of a reference
+nnoremap <leader>CM :CitePretty<cr>
+
 " Mostly dealing with Prose writing from here on out
 " Format current Paragraph (esp useful in prose writing)
 nnoremap <silent> <leader>q gqap

.config/shell/rc.d/alias-fuzzy-finding.sh

@@ -26,12 +26,55 @@ else
   echo "[WARNING]: No grep-like found - install ripgrep/the silver surfer (ag)/ack to enable functionality"
 fi
 
-# set up fuzzy file and directory search
+# TODO Allow yanking of urls, c-e to open in editor, preview window with a-p and more
-alias f="fzf -c 'find . -type f' --preview='"'head -$LINES {}'"' | xargs -0 xdg-open"
+# FZF FILES AND FOLDERS
-alias F="fzf -c 'find ~ -type f' --preview='"'head -$LINES {}'"' | xargs -0 xdg-open"
+fzf_cd_weighted() {
+  cd "$(fasd -d | sk --nth=1 --with-nth=2 --tac | cut -d' ' -f2- | sed 's/^[ \t]*//;s/[\t]*$//')" || echo "cd not successful"
+}
 
-alias d="fzf -c 'find . -type d' --preview='ls --color='always' {}' | cd"
+fzf_cd_all() {
-alias D="fzf -c 'find ~ -type d' --preview='ls --color='always' {}' --color=dark --ansi | cd"
+  cd "$(sk --cmd 'find / -type d -not \( -path /proc -prune \)')" || echo "cd not successful"
+}
+
+fzf_files_weighted() {
+  xdg-open "$(fasd -f | sk --nth=1 --with-nth=2 --tac | cut -d' ' -f2- | sed 's/^[ \t]*//;s/[\t]*$//')" || echo "xdg-open not successful"
+}
+
+fzf_files_all() {
+  xdg-open "$(sk --cmd 'find / -type d -not \( -path /proc -prune \)')" || echo "xdg-open not successful"
+}
+
+fzf_mru_weighted() {
+  target="$(fasd -t | sk --nth=1 --with-nth=2 --tac | cut -d' ' -f2- | sed 's/^[ \t]*//;s/[\t]*$//')"
+  if [ -f "$target" ]; then
+    xdg-open "$target" || echo "xdg-open not successful"
+  elif [ -d "$target" ]; then
+    cd "$target" || echo "cd not successful"
+  fi
+}
+
+# FZF NOTES
+fzf_notes() {
+  sk --cmd "command rg --follow --ignore-case --line-number --color never --no-messages --no-heading --with-filename '' /home/marty/Nextcloud/Notes" --ansi --multi --tiebreak='length,begin' --delimiter=':' --with-nth=3.. --preview='cat {1}' --preview-window=:wrap
+}
+
+# FZF BIBTEX REFERENCES
+fzf_bibtex() {
+  target=$(sk --cmd "bibtex-ls -cache $XDG_CACHE_HOME ~/Nextcloud/Library/academia/academia.bib" --ansi --with-nth=.. --preview-window=:wrap --prompt "Citation> " --preview="papis edit -e cat ref=$(echo {} | bibtex-cite | sed 's/^@//')")
+  papis edit ref="$(echo "$target" | bibtex-cite | sed 's/^@//')"
+}
+
+# set up fuzzy file and directory search
+alias f=fzf_files_weighted
+alias F=fzf_files_all
+
+alias d=fzf_cd_weighted
+alias D=fzf_cd_all
+
+alias ru=fzf_mru_weighted
+
+# set up fuzzy bibtex reference search
+alias ref=fzf_bibtex
 
 # Display fuzzy-searchable history
 alias zhfind="history | fzf --tac --height 20"