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| -rw-r--r-- | indent/tex.vim | 262 |
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diff --git a/indent/tex.vim b/indent/tex.vim new file mode 100644 index 00000000..50d1de1a --- /dev/null +++ b/indent/tex.vim @@ -0,0 +1,262 @@ +" Vim indent file +" Language: LaTeX +" Maintainer: Johannes Tanzler <johannes.tanzler@gmail.com> +" Version: 0.5 +" Created: Sat, 16 Feb 2002 16:50:19 +0100 +" Last Change: Mar, 27 Jun 2011 11:46:35 +0200 +" Last Update: 18th feb 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 <kaminsky@math.huji.ac.il> +" (*) New variables: +" g:tex_items, g:tex_itemize_env, g:tex_noindent_env +" 2011/3/6, by Zhou Yi Chao <broken.zhou@gmail.com> +" (*) 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 +" +" 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\|comment\|lstlisting'. +" +" }}} +" +" License: {{{ +" Copyright (c) 2002-2011 Johannes Tanzler <johannes.tanzler@gmail.com> + +" Permission is hereby granted, free of charge, to any person obtaining +" a copy of this software and associated documentation files (the +" "Software"), to deal in the Software without restriction, including +" without limitation the rights to use, copy, modify, merge, publish, +" distribute, sublicense, and/or sell copies of the Software, and to +" permit persons to whom the Software is furnished to do so, subject to +" the following conditions: +" +" The above copyright notice and this permission notice shall be included +" in all copies or substantial portions of the Software. +" +" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +" IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +" CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +" TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +" SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +" }}} + +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 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\|comment\|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 + + + +function GetTeXIndent() + + " Find a non-blank line above the current line. + let lnum = prevnonblank(v:lnum - 1) + + " New code for comments: Comments is not what we need. + while lnum != 0 + if getline(lnum) !~ '^\s*%' + break + endif + let lnum = prevnonblank(lnum - 1) + endwhile + + " 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 + + " 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 environments identified by + " g:tex_noindent_env + " LH modification : \begin does not always start a line + let current_regexp = '\\begin' + while 1 + let match_list = matchlist(line, current_regexp.'\s*{\(.*\)}') + if (empty(match_list)) + break + endif + let environment_type = get(match_list, 1) + if environment_type !~ g:tex_noindent_env + let ind = ind + &sw + + if g:tex_indent_items == 1 + " Add another sw for item-environments + if line =~ g:tex_itemize_env + let ind = ind + &sw + endif + endif + endif + " Make the regexp match the following begin + let current_regexp = current_regexp.'.*\\begin' + endwhile + + " Subtract a 'shiftwidth' when an environment ends + if cline =~ '^\s*\\end' && cline !~ g:tex_noindent_env + + if g:tex_indent_items == 1 + " Remove another sw for item-environments + if cline =~ g:tex_itemize_env + let ind = ind - &sw + endif + endif + + let ind = ind - &sw + endif + + " Subtract a 'shiftwidth' when an environment ended + " the previous line but the shiftwidth wasn't + " applied because it didn't begin the line + let current_regexp = '\\end' + while 1 + let match_list = matchlist(line, current_regexp.'\s*{\(.*\)}') + if (empty(match_list)) + break + endif + let environment_type = get(match_list, 1) + if environment_type !~ g:tex_noindent_env + \ && (current_regexp != '\\end' || line !~ '^\s*\\end') + " If the end begin the line, the shift width has already + " been subtracted at the previous line + + let ind = ind - &sw + + if g:tex_indent_items == 1 + " Add another sw for item-environments + if line =~ g:tex_itemize_env + let ind = ind - &sw + endif + endif + endif + " Make the regexp match the following end + let current_regexp = current_regexp.'.*\\end' + endwhile + + if g:tex_indent_brace + " Add a 'shiftwidth' after a "{" or "[" while there are not "}" and "]" + " after them. \m for magic + if line =~ '\m\(\(\[[^\]]*\)\|\({[^}]*\)\)$' + let ind = ind + &sw + endif + " Remove a 'shiftwidth' after a "}" or "]" while there are not "{" and "[" + " before them. \m for magic + if cline =~ '\m^\(\([^[]*\]\)\|\([^{]*}\)\)' + let ind = ind - &sw + endif + 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 + +" vim: set sw=4 textwidth=78: |