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" Custom Vim indent file for Perl5; the stock one didn't suit me.
" Only load this indent file when no other was loaded.
if exists('b:did_indent') || &compatible
finish
endif
let b:did_indent = 1
" Define indent function
function! GetPerlIndent()
" Just return 0 if we have no previous line to work from
let l:pn = prevnonblank(v:lnum - 1)
if !l:pn
return 0
endif
" Get line properties
let l:cl = getline(v:lnum)
let l:ci = indent(l:cn)
let l:pl = getline(l:pn)
let l:pi = indent(l:pn)
" Get value of 'shiftwidth'
let l:sw = exists('*shiftwidth')
\ ? shiftwidth()
\ : &shiftwidth
" Don't touch comments
if l:pl =~# '^\s*#'
return l:pi
" After opening brace
elseif l:pl =~# '[{([]\s*$'
" Closing brace
if l:cl =~# '^\s*[])}]'
return l:pi
" Block content
else
return l:pi + l:sw
endif
" Closing brace
elseif l:cl =~# '^\s*[])}]'
" Reduce indent if possible
if l:pi >= l:sw
return l:pi - l:sw
else
return 0
endif
" After a semicolon, comma, or closing brace
elseif l:pl =~# '[;,}]\s*$'
return l:pi - (l:pi % l:sw)
" Continued line; add half shiftwidth
elseif l:sw >= 2
return l:pi + l:sw / 2
endif
endfunction
" Indent settings
setlocal indentexpr=GetPerlIndent()
setlocal indentkeys+=0},0),0]
" Undo all of the above crap
let b:undo_indent = '|setlocal indentexpr<'
\ . '|setlocal indentkeys<'
\ . '|delfunction GetPerlIndent'
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