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perl.vim
" Vim indent file " Language: Perl 5 " Maintainer: vim-perl <vim-perl@googlegroups.com> " Homepage: http://github.com/vim-perl/vim-perl " Bugs/requests: http://github.com/vim-perl/vim-perl/issues " Last Change: 2017-01-04 " Suggestions and improvements by : " Aaron J. Sherman (use syntax for hints) " Artem Chuprina (play nice with folding) " TODO things that are not or not properly indented (yet) : " - Continued statements " print "foo", " "bar"; " print "foo" " if bar(); " - Multiline regular expressions (m//x) " (The following probably needs modifying the perl syntax file) " - qw() lists " - Heredocs with terminators that don't match \I\i* " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 " Is syntax highlighting active ? let b:indent_use_syntax = has("syntax") setlocal indentexpr=GetPerlIndent() setlocal indentkeys+=0=,0),0],0=or,0=and if !b:indent_use_syntax setlocal indentkeys+=0=EO endif let s:cpo_save = &cpo set cpo-=C function! GetPerlIndent() " Get the line to be indented let cline = getline(v:lnum) " Indent POD markers to column 0 if cline =~ '^\s*=\L\@!' return 0 endif " Get current syntax item at the line's first char let csynid = '' if b:indent_use_syntax let csynid = synIDattr(synID(v:lnum,1,0),"name") endif " Don't reindent POD and heredocs if csynid == "perlPOD" || csynid == "perlHereDoc" || csynid =~ "^pod" return indent(v:lnum) endif " Indent end-of-heredocs markers to column 0 if b:indent_use_syntax " Assumes that an end-of-heredoc marker matches \I\i* to avoid " confusion with other types of strings if csynid == "perlStringStartEnd" && cline =~ '^\I\i*$' return 0 endif else " Without syntax hints, assume that end-of-heredocs markers begin with EO if cline =~ '^\s*EO' return 0 endif endif " Now get the indent of the previous perl line. " Find a non-blank line above the current line. let lnum = prevnonblank(v:lnum - 1) " Hit the start of the file, use zero indent. if lnum == 0 return 0 endif let line = getline(lnum) let ind = indent(lnum) " Skip heredocs, POD, and comments on 1st column if b:indent_use_syntax let skippin = 2 while skippin let synid = synIDattr(synID(lnum,1,0),"name") if (synid == "perlStringStartEnd" && line =~ '^\I\i*$') \ || (skippin != 2 && synid == "perlPOD") \ || (skippin != 2 && synid == "perlHereDoc") \ || synid == "perlComment" \ || synid =~ "^pod" let lnum = prevnonblank(lnum - 1) if lnum == 0 return 0 endif let line = getline(lnum) let ind = indent(lnum) let skippin = 1 else let skippin = 0 endif endwhile else if line =~ "^EO" let lnum = search("<<[\"']\\=EO", "bW") let line = getline(lnum) let ind = indent(lnum) endif endif " Indent blocks enclosed by {}, (), or [] if b:indent_use_syntax " Find a real opening brace " NOTE: Unlike Perl character classes, we do NOT need to escape the " closing brackets with a backslash. Doing so just puts a backslash " in the character class and causes sorrow. Instead, put the closing " bracket as the first character in the class. let braceclass = '[][(){}]' let bracepos = match(line, braceclass, matchend(line, '^\s*[])}]')) while bracepos != -1 let synid = synIDattr(synID(lnum, bracepos + 1, 0), "name") " If the brace is highlighted in one of those groups, indent it. " 'perlHereDoc' is here only to handle the case '&foo(<<EOF)'. if synid == "" \ || synid == "perlMatchStartEnd" \ || synid == "perlHereDoc" \ || synid == "perlBraces" \ || synid == "perlStatementIndirObj" \ || synid =~ "^perlFiledescStatement" \ || synid =~ '^perl\(Sub\|Block\|Package\)Fold' let brace = strpart(line, bracepos, 1) if brace == '(' || brace == '{' || brace == '[' let ind = ind + shiftwidth() else let ind = ind - shiftwidth() endif endif let bracepos = match(line, braceclass, bracepos + 1) endwhile let bracepos = matchend(cline, '^\s*[])}]') if bracepos != -1 let synid = synIDattr(synID(v:lnum, bracepos, 0), "name") if synid == "" \ || synid == "perlMatchStartEnd" \ || synid == "perlBraces" \ || synid == "perlStatementIndirObj" \ || synid =~ '^perl\(Sub\|Block\|Package\)Fold' let ind = ind - shiftwidth() endif endif else if line =~ '[{[(]\s*\(#[^])}]*\)\=$' let ind = ind + shiftwidth() endif if cline =~ '^\s*[])}]' let ind = ind - shiftwidth() endif endif " Indent lines that begin with 'or' or 'and' if cline =~ '^\s*\(or\|and\)\>' if line !~ '^\s*\(or\|and\)\>' let ind = ind + shiftwidth() endif elseif line =~ '^\s*\(or\|and\)\>' let ind = ind - shiftwidth() endif return ind endfunction let &cpo = s:cpo_save unlet s:cpo_save " vim:ts=8:sts=4:sw=4:expandtab:ft=vim
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