" Vim indent file " Language: LaTeX " Maintainer: Zhou YiChao " Created: Sat, 16 Feb 2002 16:50:19 +0100 " Last Change: 2011 Dec 24 " Last Update: 25th Sep 2002, by LH : " (*) better support for the option " (*) use some regex instead of several '||'. " Oct 9th, 2003, by JT: " (*) don't change indentation of lines starting with '%' " 2005/06/15, Moshe Kaminsky " (*) New variables: " g:tex_items, g:tex_itemize_env, g:tex_noindent_env " 2011/3/6, by Zhou YiChao " (*) Don't change indentation of lines starting with '%' " I don't see any code with '%' and it doesn't work properly " so I add some code. " (*) New features: Add smartindent-like indent for "{}" and "[]". " (*) New variables: g:tex_indent_brace " 2011/9/25, by Zhou Yichao " (*) Bug fix: smartindent-like indent for "[]" " (*) New features: Align with "&". " (*) New variable: g:tex_indent_and " 2011/10/23 by Zhou Yichao " (*) Bug fix: improve the smartindent-like indent for "{}" and " "[]". " " Version: 0.62 " Options: {{{ " " To set the following options (ok, currently it's just one), add a line like " let g:tex_indent_items = 1 " to your ~/.vimrc. " " * g:tex_indent_brace " " If this variable is unset or non-zero, it will use smartindent-like style " for "{}" and "[]" " " * g:tex_indent_items " " If this variable is set, item-environments are indented like Emacs does " it, i.e., continuation lines are indented with a shiftwidth. " " NOTE: I've already set the variable below; delete the corresponding line " if you don't like this behaviour. " " Per default, it is unset. " " set unset " ---------------------------------------------------------------- " \begin{itemize} \begin{itemize} " \item blablabla \item blablabla " bla bla bla bla bla bla " \item blablabla \item blablabla " bla bla bla bla bla bla " \end{itemize} \end{itemize} " " " * g:tex_items " " A list of tokens to be considered as commands for the beginning of an item " command. The tokens should be separated with '\|'. The initial '\' should " be escaped. The default is '\\bibitem\|\\item'. " " * g:tex_itemize_env " " A list of environment names, separated with '\|', where the items (item " commands matching g:tex_items) may appear. The default is " 'itemize\|description\|enumerate\|thebibliography'. " " * g:tex_noindent_env " " A list of environment names. separated with '\|', where no indentation is " required. The default is 'document\|verbatim'. " " * g:tex_indent_and " " If this variable is unset or zero, vim will try to align the line with first " "&". This is pretty useful when you use environment like table or align. " Note that this feature need to search back some line, so vim may become " a little slow. " " }}} if exists("b:did_indent") finish endif let b:did_indent = 1 " Delete the next line to avoid the special indention of items if !exists("g:tex_indent_items") let g:tex_indent_items = 1 endif if !exists("g:tex_indent_brace") let g:tex_indent_brace = 1 endif if !exists("g:tex_indent_and") let g:tex_indent_and = 1 endif if g:tex_indent_items if !exists("g:tex_itemize_env") let g:tex_itemize_env = 'itemize\|description\|enumerate\|thebibliography' endif if !exists('g:tex_items') let g:tex_items = '\\bibitem\|\\item' endif else let g:tex_items = '' endif if !exists("g:tex_noindent_env") let g:tex_noindent_env = 'document\|verbatim\|lstlisting' endif setlocal autoindent setlocal nosmartindent setlocal indentexpr=GetTeXIndent() exec 'setlocal indentkeys+=},],\&' . substitute(g:tex_items, '^\|\(\\|\)', ',=', 'g') let g:tex_items = '^\s*' . g:tex_items " Only define the function once if exists("*GetTeXIndent") | finish endif let s:cpo_save = &cpo set cpo&vim function GetTeXIndent() " Find a non-blank line above the current line. let lnum = prevnonblank(v:lnum - 1) " Comment line is not what we need. while lnum != 0 && getline(lnum) =~ '^\s*%' let lnum = prevnonblank(lnum - 1) endwhile " At the start of the file use zero indent. if lnum == 0 return 0 endif let line = getline(lnum) " last line let cline = getline(v:lnum) " current line " You want to align with "&" if g:tex_indent_and " Align with last line if last line has a "&" if stridx(cline, "&") != -1 && stridx(line, "&") != -1 return indent(v:lnum) + stridx(line, "&") - stridx(cline, "&") endif " set line & lnum to the line which doesn't contain "&" while lnum != 0 && (stridx(line, "&") != -1 || line =~ '^\s*%') let lnum = prevnonblank(lnum - 1) let line = getline(lnum) endwhile endif if lnum == 0 return 0 endif let ind = indent(lnum) " New code for comment: retain the indent of current line if cline =~ '^\s*%' return indent(v:lnum) endif " Add a 'shiftwidth' after beginning of environments. " Don't add it for \begin{document} and \begin{verbatim} ""if line =~ '^\s*\\begin{\(.*\)}' && line !~ 'verbatim' " LH modification : \begin does not always start a line " ZYC modification : \end after \begin won't cause wrong indent anymore if line =~ '\\begin{.*}' && line !~ g:tex_noindent_env \ && line !~ '\\begin{.\{-}}.*\\end{.*}' let ind = ind + &sw if g:tex_indent_items " Add another sw for item-environments if line =~ g:tex_itemize_env let ind = ind + &sw endif endif endif " Subtract a 'shiftwidth' when an environment ends if cline =~ '^\s*\\end' && cline !~ g:tex_noindent_env if g:tex_indent_items " Remove another sw for item-environments if cline =~ g:tex_itemize_env let ind = ind - &sw endif endif let ind = ind - &sw endif if g:tex_indent_brace " Add a 'shiftwidth' after a "{" or "[". let sum1 = 0 for i in range(0, strlen(line)-1) if line[i] == "}" || line[i] == "]" let sum1 = max([0, sum1-1]) endif if line[i] == "{" || line[i] == "[" let sum1 += 1 endif endfor let sum2 = 0 for i in reverse(range(0, strlen(cline)-1)) if cline[i] == "{" || cline[i] == "[" let sum2 = max([0, sum2-1]) endif if cline[i] == "}" || cline[i] == "]" let sum2 += 1 endif endfor let ind += (sum1 - sum2) * &sw endif " Special treatment for 'item' " ---------------------------- if g:tex_indent_items " '\item' or '\bibitem' itself: if cline =~ g:tex_items let ind = ind - &sw endif " lines following to '\item' are intented once again: if line =~ g:tex_items let ind = ind + &sw endif endif return ind endfunction let &cpo = s:cpo_save unlet s:cpo_save " vim: set sw=4 textwidth=80: