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Optimize uniq(). #190

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Optimize uniq(). #190

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18 changes: 3 additions & 15 deletions autoload/pathogen.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -221,22 +221,10 @@ function! pathogen#glob_directories(pattern) abort
return filter(pathogen#glob(a:pattern),'isdirectory(v:val)')
endfunction

" Remove duplicates from a list.
" Remove duplicates from a list in-place keeping the first copy.
function! pathogen#uniq(list) abort
let i = 0
let seen = {}
while i < len(a:list)
if (a:list[i] ==# '' && exists('empty')) || has_key(seen,a:list[i])
call remove(a:list,i)
elseif a:list[i] ==# ''
let i += 1
let empty = 1
else
let seen[a:list[i]] = 1
let i += 1
endif
endwhile
return a:list
let copyList = copy(a:list) " Can't use filter argument in the filter condition.
return filter(a:list, 'index(copyList, v:val) >= v:key')
endfunction

" Backport of fnameescape().
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