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" Helper function to run the 'filetypedetect' group on a file with its
" extension stripped off
function! filetype#StripRepeat() abort
" Check we have the fnameescape() function
if !exists('*fnameescape')
return
endif
" Expand the match result
let fn = expand('<afile>')
" Strip leading and trailing #hashes#
if fn =~# '^#\+.*#\+$'
let fn = substitute(fn, '^#\+\(.\+\)#\+$', '\1', '')
" Strip trailing tilde~
elseif fn =~# '\~$'
let fn = substitute(fn, '\~$', '', '')
" Strip generic .extension
else
let fn = expand('<afile>:r')
endif
" Re-run the group if there's anything left
if strlen(fn)
execute 'doautocmd filetypedetect BufRead ' . fnameescape(fn)
endif
endfunction
" Helper function to run the 'filetypedetect' group on a file in a temporary
" sudoedit(8) directory, modifying it with an attempt to reverse the temporary
" filename change
function! filetype#SudoRepeat() abort
" Check we have the fnameescape() function
if !exists('*fnameescape')
return
endif
" Expand the match result
let fn = expand('<afile>')
" myfileXXQGS16A.conf: strip eight chars before final period
if fn =~# '/[^/]\+\w\{8}\.[^./]\+$'
let fr = expand('<afile>:r')
let fe = expand('<afile>:e')
let fn = strpart(fr, -8, strlen(fr)) . '.' . fe
" myfile.XXQGS16A: strip extension
elseif fn =~# '/[^/]\+\.\w\{8}$'
let fn = expand('<afile>:r')
" Unrecognised pattern; return, don't repeat
else
return
endif
" Re-run the group if there's anything left
if strlen(fn)
execute 'doautocmd filetypedetect BufRead ' . fnameescape(fn)
endif
endfunction
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