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if $SHELL !~# 'zsh' || !exists('g:_zsh_hist_fname')
finish
endif
let s:initial_files = {}
augroup zshhistory
autocmd!
autocmd VimEnter * call <SID>init_zsh_hist()
autocmd BufNewFile,BufRead * call <SID>zsh_hist_append()
autocmd BufDelete * call <SID>remove_initial_file(expand("<afile>"))
autocmd VimLeave * call <SID>reorder_zsh_hist()
augroup END
function! s:remove_initial_file (file)
if has_key(s:initial_files, a:file)
unlet s:initial_files[a:file]
endif
endfunction
function! s:get_buffer_list_text ()
redir => l:output
ls!
redir END
return l:output
endfunction
function! s:get_buffer_list ()
silent let l:output = <SID>get_buffer_list_text()
let l:buffer_list = []
for l:buffer_desc in split(l:output, "\n")
let l:name = bufname(str2nr(l:buffer_desc))
if l:name != ""
call add(l:buffer_list, l:name)
endif
endfor
return l:buffer_list
endfunction
function! s:init_zsh_hist ()
for l:fname in <SID>get_buffer_list()
if strlen(l:fname) > 0
let s:initial_files[l:fname] = 1
call histadd(":", "e " . l:fname)
endif
endfor
call delete(g:_zsh_hist_fname)
endfunction
function! s:zsh_hist_append ()
let l:to_append = expand("%:~:.")
" XXX these set buftype too late to be caught by this...
" this is broken, but not sure what a better fix is
if &buftype == '' && l:to_append !~# '^\(__Gundo\|Startify\|\[denite\]\)'
if !has_key(s:initial_files, l:to_append)
if filereadable(g:_zsh_hist_fname)
let l:hist = readfile(g:_zsh_hist_fname)
else
let l:hist = []
endif
call add(l:hist, l:to_append)
call writefile(l:hist, g:_zsh_hist_fname)
endif
endif
endfunction
function! s:reorder_zsh_hist ()
let l:current_file = expand("%:~:.")
if filereadable(g:_zsh_hist_fname)
let l:hist = readfile(g:_zsh_hist_fname)
if !has_key(s:initial_files, l:current_file)
call filter(l:hist, 'v:val != l:current_file')
endif
call add(l:hist, l:current_file)
call writefile(l:hist, g:_zsh_hist_fname)
endif
endfunction
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