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+" Vim indent file
+" Language: Perl 6
+" Maintainer: vim-perl <vim-perl@googlegroups.com>
+" Homepage: https://github.com/vim-perl/vim-perl
+" Bugs/requests: https://github.com/vim-perl/vim-perl/issues
+" Last Change: 2020 Apr 15
+" 2023 Aug 28 by Vim Project (undo_indent)
+" Contributors: Andy Lester <andy@petdance.com>
+" Hinrik Örn Sigurðsson <hinrik.sig@gmail.com>
+"
+" Adapted from indent/perl.vim by Rafael Garcia-Suarez <rgarciasuarez@free.fr>
+
+" Suggestions and improvements by :
+" Aaron J. Sherman (use syntax for hints)
+" Artem Chuprina (play nice with folding)
+" TODO:
+" This file still relies on stuff from the Perl 5 syntax file, which Perl 6
+" does not use.
+"
+" 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=GetRakuIndent()
+
+" we reset it first because the Perl 5 indent file might have been loaded due
+" to a .pl/pm file extension, and indent files don't clean up afterwards
+setlocal indentkeys&
+
+setlocal indentkeys+=0=,0),0],0>,0»,0=or,0=and
+if !b:indent_use_syntax
+ setlocal indentkeys+=0=EO
+endif
+
+let b:undo_indent = "setlocal indentexpr< indentkeys<"
+
+let s:cpo_save = &cpo
+set cpo-=C
+
+function! GetRakuIndent()
+
+ " 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 =~ "^rakuPod"
+ return indent(v:lnum)
+ 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 =~ "^rakuPod" || synid =~ "rakuComment")
+ 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
+ endif
+
+ if line =~ '[<«\[{(]\s*\(#[^)}\]»>]*\)\=$'
+ let ind = ind + &sw
+ endif
+ if cline =~ '^\s*[)}\]»>]'
+ let ind = ind - &sw
+ endif
+
+ " Indent lines that begin with 'or' or 'and'
+ if cline =~ '^\s*\(or\|and\)\>'
+ if line !~ '^\s*\(or\|and\)\>'
+ let ind = ind + &sw
+ endif
+ elseif line =~ '^\s*\(or\|and\)\>'
+ let ind = ind - &sw
+ endif
+
+ return ind
+
+endfunction
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+" vim:ts=8:sts=4:sw=4:expandtab:ft=vim