dot-files/vim/.vim/autoload/quickfixed.vim

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" Taken from the Vimways article
function! s:isLocation()
" Get dictionary of properties of the current window
let wininfo = filter(getwininfo(), {i,v -> v.winnr == winnr()})[0]
return wininfo.loclist
endfunction
function! s:length()
" Get the size of the current quickfix/location list
return len(s:isLocation() ? getloclist(0) : getqflist())
endfunction
function! s:getProperty(key, ...)
" getqflist() and getloclist() expect a dictionary argument
" If a 2nd argument has been passed in, use it as the value, else 0
let l:what = {a:key : a:0 ? a:1 : 0}
let l:listdict = s:isLocation() ? getloclist(0, l:what) : getqflist(l:what)
return get(l:listdict, a:key)
endfunction
function! s:isFirst()
return s:getProperty('nr') <= 1
endfunction
function! s:isLast()
return s:getProperty('nr') == s:getProperty('nr', '$')
endfunction
function! s:history(goNewer)
" Build the command: one of colder/cnewer/lolder/lnewer
let l:cmd = (s:isLocation() ? 'l' : 'c') . (a:goNewer ? 'newer' : 'older')
" Apply the cmd repeatedly until we hit a non-empty list, or first/last list
" is reached
while 1
if (a:goNewer && s:isLast()) || (!a:goNewer && s:isFirst()) | break | endif
" Run the command. Use :silent to suppress message-history output.
" Note that the :try wrapper is no longer necessary
silent execute l:cmd
if s:length() | break | endif
endwhile
" Echo a description of the new quickfix / location list.
" And make it look like a rainbow.
let l:nr = s:getProperty('nr')
let l:last = s:getProperty('nr', '$')
echohl MoreMsg | echon '('
echohl Identifier | echon l:nr
if l:last > 1
echohl LineNr | echon ' of '
echohl Identifier | echon l:last
endif
echohl MoreMsg | echon ') '
echohl MoreMsg | echon '['
echohl Identifier | echon s:length()
echohl MoreMsg | echon '] '
echohl Normal | echon s:getProperty('title')
echohl None
endfunction
function! quickfixed#older()
call s:history(0)
endfunction
function! quickfixed#newer()
call s:history(1)
endfunction