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" Vim indent file
" Language: LaTeX
" Maintainer: Johannes Tanzler <jtanzler@yline.com>
" Created: Sat, 16 Feb 2002 16:50:19 +0100
" Last Change: Sun, 17 Feb 2002 00:09:11 +0100
" Last Update: 18th feb 2002, by LH :
" (*) better support for the option
" (*) use some regex instead of several '||'.
" Version: 0.02
" URL: comming soon: http://www.unet.univie.ac.at/~a9925098/vim/indent/tex.vim
" --> If you're a Vim guru & and you find something that could be done in a
" better (perhaps in a more Vim-ish or Vi-ish) way, please let me know!
" 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_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}
"
"
" This option applies to itemize, description, enumerate, and
" thebibliography.
"
" }}}
" 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("b:did_indent") | finish
endif
let b:did_indent = 1
setlocal indentexpr=GetTeXIndent()
setlocal nolisp
setlocal nosmartindent
setlocal autoindent
setlocal indentkeys+=},=\\item,=\\bibitem
" Only define the function once
if exists("*GetTeXIndent") | finish
endif
function GetTeXIndent()
" Find a non-blank line above the current line.
let lnum = prevnonblank(v:lnum - 1)
" At the start of the file use zero indent.
if lnum == 0 | return 0
endif
let ind = indent(lnum)
let line = getline(lnum) " last line
let cline = getline(v:lnum) " current line
" Do not change indentation of commented lines.
if line =~ '^\s*%'
return ind
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
if line =~ '\\begin{\(.*\)}' && line !~ 'verbatim'
\ && line !~ 'document'
let ind = ind + &sw
if g:tex_indent_items == 1
" Add another sw for item-environments
if line =~ 'itemize\|description\|enumerate\|thebibliography'
let ind = ind + &sw
endif
endif
endif
" Subtract a 'shiftwidth' when an environment ends
if cline =~ '^\s*\\end' && cline !~ 'verbatim'
\&& cline !~ 'document'
if g:tex_indent_items == 1
" Remove another sw for item-environments
if cline =~ 'itemize\|description\|enumerate\|thebibliography'
let ind = ind - &sw
endif
endif
let ind = ind - &sw
endif
" Special treatment for 'item'
" ----------------------------
if g:tex_indent_items == 1
" '\item' or '\bibitem' itself:
if cline =~ '^\s*\\\(bib\)\=item'
let ind = ind - &sw
endif
" lines following to '\item' are intented once again:
if line =~ '^\s*\\\(bib\)\=item'
let ind = ind + &sw
endif
endif
return ind
endfunction
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