diff options
author | Bram Moolenaar <Bram@vim.org> | 2011-12-14 21:17:39 +0100 |
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committer | Bram Moolenaar <Bram@vim.org> | 2011-12-14 21:17:39 +0100 |
commit | f1568eca24d30d4f308e987657c53cd48d97d8fa (patch) | |
tree | 900c802d8096eca43c957c0b3c16cc36cec32e7b /runtime/indent/tex.vim | |
parent | f788a0610309ed9787b4e48216c7d7d4446744c5 (diff) |
Update runtime files.
Diffstat (limited to 'runtime/indent/tex.vim')
-rw-r--r-- | runtime/indent/tex.vim | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/runtime/indent/tex.vim b/runtime/indent/tex.vim new file mode 100644 index 0000000000..0758a70277 --- /dev/null +++ b/runtime/indent/tex.vim @@ -0,0 +1,250 @@ +" Vim indent file +" Language: LaTeX +" Maintainer: Zhou YiChao <broken.zhou@gmail.com> +" Created: Sat, 16 Feb 2002 16:50:19 +0100 +" Last Change: Tue, 25 Sep 2011 +" 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 <kaminsky@math.huji.ac.il> +" (*) New variables: +" g:tex_items, g:tex_itemize_env, g:tex_noindent_env +" 2011/3/6, by Zhou YiChao <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 +" 2011/9/25, by Zhou Yichao <broken.zhou@gmail.com> +" (*) Bug fix: smartindent-like indent for "[]" +" (*) New features: Align with "&". +" (*) New variable: g:tex_indent_and +" 2011/10/23 by Zhou Yichao <broken.zhou@gmail.com> +" (*) 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 + + +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 + +" vim: set sw=4 textwidth=80: |