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sh.vim
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" Vim indent file " Language: Shell Script " Maintainer: Christian Brabandt <cb@256bit.org> " Previous Maintainer: Peter Aronoff <telemachus@arpinum.org> " Original Author: Nikolai Weibull <now@bitwi.se> " Latest Revision: 2017-08-08 " License: Vim (see :h license) " Repository: https://github.com/chrisbra/vim-sh-indent " Changelog: " 20170808: - better indent of line continuation " 20170502: - get rid of buffer-shiftwidth function " 20160912: - preserve indentation of here-doc blocks " 20160627: - detect heredocs correctly " 20160213: - detect function definition correctly " 20160202: - use shiftwidth() function " 20151215: - set b:undo_indent variable " 20150728: - add foreach detection for zsh if exists("b:did_indent") finish endif let b:did_indent = 1 setlocal indentexpr=GetShIndent() setlocal indentkeys+=0=then,0=do,0=else,0=elif,0=fi,0=esac,0=done,0=end,),0=;;,0=;& setlocal indentkeys+=0=fin,0=fil,0=fip,0=fir,0=fix setlocal indentkeys-=:,0# setlocal nosmartindent let b:undo_indent = 'setlocal indentexpr< indentkeys< smartindent<' if exists("*GetShIndent") finish endif let s:cpo_save = &cpo set cpo&vim let s:sh_indent_defaults = { \ 'default': function('shiftwidth'), \ 'continuation-line': function('shiftwidth'), \ 'case-labels': function('shiftwidth'), \ 'case-statements': function('shiftwidth'), \ 'case-breaks': 0 } function! s:indent_value(option) let Value = exists('b:sh_indent_options') \ && has_key(b:sh_indent_options, a:option) ? \ b:sh_indent_options[a:option] : \ s:sh_indent_defaults[a:option] if type(Value) == type(function('type')) return Value() endif return Value endfunction function! GetShIndent() let lnum = prevnonblank(v:lnum - 1) if lnum == 0 return 0 endif let pnum = prevnonblank(lnum - 1) let ind = indent(lnum) let line = getline(lnum) if line =~ '^\s*\%(if\|then\|do\|else\|elif\|case\|while\|until\|for\|select\|foreach\)\>' if line !~ '\<\%(fi\|esac\|done\|end\)\>\s*\%(#.*\)\=$' let ind += s:indent_value('default') endif elseif s:is_case_label(line, pnum) if !s:is_case_ended(line) let ind += s:indent_value('case-statements') endif elseif line =~ '^\s*\<\k\+\>\s*()\s*{' || line =~ '^\s*{' || line =~ '^\s*function\s*\w\S\+\s*\%(()\)\?\s*{' if line !~ '}\s*\%(#.*\)\=$' let ind += s:indent_value('default') endif elseif s:is_continuation_line(line) if pnum == 0 || !s:is_continuation_line(getline(pnum)) let ind += s:indent_value('continuation-line') endif elseif pnum != 0 && s:is_continuation_line(getline(pnum)) let ind = indent(s:find_continued_lnum(pnum)) endif let pine = line let line = getline(v:lnum) if line =~ '^\s*\%(then\|do\|else\|elif\|fi\|done\|end\)\>' || line =~ '^\s*}' let ind -= s:indent_value('default') elseif line =~ '^\s*esac\>' && s:is_case_empty(getline(v:lnum - 1)) let ind -= s:indent_value('default') elseif line =~ '^\s*esac\>' let ind -= (s:is_case_label(pine, lnum) && s:is_case_ended(pine) ? \ 0 : s:indent_value('case-statements')) + \ s:indent_value('case-labels') if s:is_case_break(pine) let ind += s:indent_value('case-breaks') endif elseif s:is_case_label(line, lnum) if s:is_case(pine) let ind = indent(lnum) + s:indent_value('case-labels') else let ind -= (s:is_case_label(pine, lnum) && s:is_case_ended(pine) ? \ 0 : s:indent_value('case-statements')) - \ s:indent_value('case-breaks') endif elseif s:is_case_break(line) let ind -= s:indent_value('case-breaks') elseif s:is_here_doc(line) let ind = 0 " statements, executed within a here document. Keep the current indent elseif match(map(synstack(v:lnum, 1), 'synIDattr(v:val, "name")'), '\c\mheredoc') > -1 return indent(v:lnum) endif return ind endfunction function! s:is_continuation_line(line) return a:line =~ '\%(\%(^\|[^\\]\)\\\|&&\|||\||\)' . \ '\s*\({\s*\)\=\(#.*\)\=$' endfunction function! s:find_continued_lnum(lnum) let i = a:lnum while i > 1 && s:is_continuation_line(getline(i - 1)) let i -= 1 endwhile return i endfunction function! s:is_case_label(line, pnum) if a:line !~ '^\s*(\=.*)' return 0 endif if a:pnum > 0 let pine = getline(a:pnum) if !(s:is_case(pine) || s:is_case_ended(pine)) return 0 endif endif let suffix = substitute(a:line, '^\s*(\=', "", "") let nesting = 0 let i = 0 let n = strlen(suffix) while i < n let c = suffix[i] let i += 1 if c == '\\' let i += 1 elseif c == '(' let nesting += 1 elseif c == ')' if nesting == 0 return 1 endif let nesting -= 1 endif endwhile return 0 endfunction function! s:is_case(line) return a:line =~ '^\s*case\>' endfunction function! s:is_case_break(line) return a:line =~ '^\s*;[;&]' endfunction function! s:is_here_doc(line) if a:line =~ '^\w\+$' let here_pat = '<<-\?'. s:escape(a:line). '\$' return search(here_pat, 'bnW') > 0 endif return 0 endfunction function! s:is_case_ended(line) return s:is_case_break(a:line) || a:line =~ ';[;&]\s*\%(#.*\)\=$' endfunction function! s:is_case_empty(line) if a:line =~ '^\s*$' || a:line =~ '^\s*#' return s:is_case_empty(getline(v:lnum - 1)) else return a:line =~ '^\s*case\>' endif endfunction function! s:escape(pattern) return '\V'. escape(a:pattern, '\\') endfunction let &cpo = s:cpo_save unlet s:cpo_save