view runtime/indent/tex.vim @ 34359:0447bf3a88a5 v9.1.0110

patch 9.1.0110: filetype: add 'Config.in' filetype detection Commit: https://github.com/vim/vim/commit/5f20f050efed3431beaf85739f0113e9ef0abd8e Author: Brandon Maier <brandon.maier@collins.com> Date: Wed Feb 14 22:30:06 2024 +0100 patch 9.1.0110: filetype: add 'Config.in' filetype detection The 'Config.in' file type is for Buildroot configuration files. Buildroot Config.in files use the same Kconfig backend as the Linux kernel's Kconfig files. Buildroot also has other filename variants that follow "Config.in.*", they are used to distinguish multiple Config.in files in the same directory. See https://buildroot.org/downloads/manual/manual.html#_literal_config_in_literal_file closes: #14038 Signed-off-by: Brandon Maier <brandon.maier@collins.com> Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Wed, 14 Feb 2024 22:45:02 +0100
parents 5c220cf30f1f
children
line wrap: on
line source

" Vim indent file
" Language:     LaTeX
" Maintainer:   Yichao Zhou <broken.zhou AT gmail.com>
" Created:      Sat, 16 Feb 2002 16:50:19 +0100
" Version: 1.0.0
"   Please email me if you found something I can do.  Comments, bug report and
"   feature request are welcome.

" 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 AT math.huji.ac.il>
"               (*) New variables:
"                   g:tex_items, g:tex_itemize_env, g:tex_noindent_env
"               2011/3/6, by Yichao Zhou <broken.zhou AT 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 Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Bug fix: smartindent-like indent for "[]"
"               (*) New features: Align with "&".
"               (*) New variable: g:tex_indent_and.
"               2011/10/23 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Bug fix: improve the smartindent-like indent for "{}" and
"               "[]".
"               2012/02/27 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Bug fix: support default folding marker.
"               (*) Indent with "&" is not very handy.  Make it not enable by
"               default.
"               2012/03/06 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Modify "&" behavior and make it default again.  Now "&"
"               won't align when there are more then one "&" in the previous
"               line.
"               (*) Add indent "\left(" and "\right)"
"               (*) Trust user when in "verbatim" and "lstlisting"
"               2012/03/11 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Modify "&" so that only indent when current line start with
"                   "&".
"               2012/03/12 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Modify indentkeys.
"               2012/03/18 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Add &cpo
"               2013/05/02 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Fix problem about GetTeXIndent checker. Thank Albert Netymk
"                   for reporting this.
"               2014/06/23 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Remove the feature g:tex_indent_and because it is buggy.
"               (*) If there is not any obvious indentation hints, we do not
"                   alert our user's current indentation.
"               (*) g:tex_indent_brace now only works if the open brace is the
"                   last character of that line.
"               2014/08/03 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Indent current line if last line has larger indentation
"               2016/11/08 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Fix problems for \[ and \].  Thanks Bruno for reporting.
"               2017/04/30 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Fix a bug between g:tex_noindent_env and g:tex_indent_items
"                   Now g:tex_noindent_env='document\|verbatim\|itemize' (Emacs
"                   style) is supported.  Thanks Miles Wheeler for reporting.
"               2018/02/07 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Make indentation more smart in the normal mode
"               2020/04/26 by Yichao Zhou <broken.zhou AT gmail.com>
"               (*) Fix a bug related to \[ & \].  Thanks Manuel Boni for
"               reporting.
"               2023/08/28 by Vim Project
"               (*) Set b:undo_indent.
" }}}

" Document: {{{
"
" For proper latex experience, please put
"         let g:tex_flavor = "latex"
" into your vimrc.
"
" * g:tex_indent_brace
"
"   If this variable is unset or non-zero, it will use smartindent-like style
"   for "{}" and "[]".  Now this only works if the open brace is the last
"   character of that line.
"
"         % Example 1
"         \usetikzlibrary{
"           external
"         }
"
"         % Example 2
"         \tikzexternalize[
"           prefix=tikz]
"
" * 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.
"
"              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'.
" }}}

" Only define the function once
if exists("b:did_indent")
    finish
endif

let s:cpo_save = &cpo
set cpo&vim

" Define global variable {{{

let b:did_indent = 1

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_max_scan_line")
    let g:tex_max_scan_line = 60
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 "}}}

" VIM Setting " {{{
setlocal autoindent
setlocal nosmartindent
setlocal indentexpr=GetTeXIndent()
setlocal indentkeys&
exec 'setlocal indentkeys+=[,(,{,),},],\&' . substitute(g:tex_items, '^\|\(\\|\)', ',=', 'g')
let g:tex_items = '^\s*' . substitute(g:tex_items, '^\(\^\\s\*\)*', '', '')
let b:undo_indent = "setlocal autoindent< indentexpr< indentkeys< smartindent<"
" }}}

function! GetTeXIndent() " {{{
    " Find a non-blank line above the current line.
    let lnum = prevnonblank(v:lnum - 1)
    let cnum = v:lnum

    " 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 = substitute(getline(lnum), '\s*%.*', '','g')     " last line
    let cline = substitute(getline(v:lnum), '\s*%.*', '', 'g') " current line

    let ccol = 1
    while cline[ccol] =~ '\s'
        let ccol += 1
    endwhile

    "  We are in verbatim, so do what our user what.
    if synIDattr(synID(v:lnum, ccol, 1), "name") == "texZone"
        if empty(cline)
            return indent(lnum)
        else
            return indent(v:lnum)
        endif
    endif

    if lnum == 0
        return 0
    endif

    let ind = indent(lnum)
    let stay = 1

    " 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{.*}' 
        if line !~ g:tex_noindent_env
            let ind = ind + shiftwidth()
            let stay = 0
        endif

        if g:tex_indent_items
            " Add another sw for item-environments
            if line =~ g:tex_itemize_env
                let ind = ind + shiftwidth()
                let stay = 0
            endif
        endif
    endif

    if cline =~ '\\end{.*}'
        let retn = s:GetEndIndentation(v:lnum)
        if retn != -1
            return retn
        endif
    end
    " Subtract a 'shiftwidth' when an environment ends
    if cline =~ '\\end{.*}'
                \ && cline !~ g:tex_noindent_env
                \ && cline !~ '\\begin{.*}.*\\end{.*}'
        if g:tex_indent_items
            " Remove another sw for item-environments
            if cline =~ g:tex_itemize_env
                let ind = ind - shiftwidth()
                let stay = 0
            endif
        endif

        let ind = ind - shiftwidth()
        let stay = 0
    endif

    if g:tex_indent_brace
        if line =~ '[[{]$'
            let ind += shiftwidth()
            let stay = 0
        endif

        if cline =~ '^\s*\\\?[\]}]' && s:CheckPairedIsLastCharacter(v:lnum, ccol)
            let ind -= shiftwidth()
            let stay = 0
        endif

        if line !~ '^\s*\\\?[\]}]'
            for i in range(1, strlen(line)-1)
                let char = line[i]
                if char == ']' || char == '}'
                    if s:CheckPairedIsLastCharacter(lnum, i)
                        let ind -= shiftwidth()
                        let stay = 0
                    endif
                endif
            endfor
        endif
    endif

    " Special treatment for 'item'
    " ----------------------------

    if g:tex_indent_items
        " '\item' or '\bibitem' itself:
        if cline =~ g:tex_items
            let ind = ind - shiftwidth()
            let stay = 0
        endif
        " lines following to '\item' are indented once again:
        if line =~ g:tex_items
            let ind = ind + shiftwidth()
            let stay = 0
        endif
    endif

    if stay && mode() == 'i'
        " If there is no obvious indentation hint, and indentation is triggered
        " in insert mode, we trust our user.
        if empty(cline)
            return ind
        else
            return max([indent(v:lnum), s:GetLastBeginIndentation(v:lnum)])
        endif
    else
        return ind
    endif
endfunction "}}}

function! s:GetLastBeginIndentation(lnum) " {{{
    let matchend = 1
    for lnum in range(a:lnum-1, max([a:lnum - g:tex_max_scan_line, 1]), -1)
        let line = getline(lnum)
        if line =~ '\\end{.*}'
            let matchend += 1
        endif
        if line =~ '\\begin{.*}'
            let matchend -= 1
        endif
        if matchend == 0
            if line =~ g:tex_noindent_env
                return indent(lnum)
            endif
            if line =~ g:tex_itemize_env
                return indent(lnum) + 2 * shiftwidth()
            endif
            return indent(lnum) + shiftwidth()
        endif
    endfor
    return -1
endfunction

function! s:GetEndIndentation(lnum) " {{{
    if getline(a:lnum) =~ '\\begin{.*}.*\\end{.*}'
        return -1
    endif

    let min_indent = 100
    let matchend = 1
    for lnum in range(a:lnum-1, max([a:lnum-g:tex_max_scan_line, 1]), -1)
        let line = getline(lnum)
        if line =~ '\\end{.*}'
            let matchend += 1
        endif
        if line =~ '\\begin{.*}'
            let matchend -= 1
        endif
        if matchend == 0
            return indent(lnum)
        endif
        if !empty(line)
            let min_indent = min([min_indent, indent(lnum)])
        endif
    endfor
    return min_indent - shiftwidth()
endfunction

" Most of the code is from matchparen.vim
function! s:CheckPairedIsLastCharacter(lnum, col) "{{{
    let c_lnum = a:lnum
    let c_col = a:col+1

    let line = getline(c_lnum)
    if line[c_col-1] == '\'
        let c_col = c_col + 1
    endif
    let c = line[c_col-1]

    let plist = split(&matchpairs, '.\zs[:,]')
    let i = index(plist, c)
    if i < 0
        return 0
    endif

    " Figure out the arguments for searchpairpos().
    if i % 2 == 0
        let s_flags = 'nW'
        let c2 = plist[i + 1]
    else
        let s_flags = 'nbW'
        let c2 = c
        let c = plist[i - 1]
    endif
    if c == '['
        let c = '\['
        let c2 = '\]'
    endif

    " Find the match.  When it was just before the cursor move it there for a
    " moment.
    let save_cursor = winsaveview()
    call cursor(c_lnum, c_col)

    " When not in a string or comment ignore matches inside them.
    " We match "escape" for special items, such as lispEscapeSpecial.
    let s_skip ='synIDattr(synID(line("."), col("."), 0), "name") ' .
                \ '=~?  "string\\|character\\|singlequote\\|escape\\|comment"'
    execute 'if' s_skip '| let s_skip = 0 | endif'

    let stopline = max([0, c_lnum - g:tex_max_scan_line])

    " Limit the search time to 300 msec to avoid a hang on very long lines.
    " This fails when a timeout is not supported.
    try
        let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline, 100)
    catch /E118/
    endtry

    call winrestview(save_cursor)

    if m_lnum > 0
        let line = getline(m_lnum)
        return strlen(line) == m_col
    endif

    return 0
endfunction "}}}

let &cpo = s:cpo_save
unlet s:cpo_save

" vim: set sw=4 textwidth=80: