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+" Vim filetype plugin file
+" Language: Bazel (http://bazel.io)
+" Maintainer: David Barnett (https://github.com/google/vim-ft-bzl)
+" Last Change: 2021 Jan 19
+" 2023 Aug 28 by Vim Project (undo_ftplugin)
+
+""
+" @section Introduction, intro
+" Core settings for the bzl filetype, used for BUILD and *.bzl files for the
+" Bazel build system (http://bazel.io/).
+
+if exists('b:did_ftplugin')
+ finish
+endif
+
+
+" Vim 7.4.051 has opinionated settings in ftplugin/python.vim that try to force
+" PEP8 conventions on every python file, but these conflict with Google's
+" indentation guidelines. As a workaround, we explicitly source the system
+" ftplugin, but save indentation settings beforehand and restore them after.
+let s:save_expandtab = &l:expandtab
+let s:save_shiftwidth = &l:shiftwidth
+let s:save_softtabstop = &l:softtabstop
+let s:save_tabstop = &l:tabstop
+
+" NOTE: Vim versions before 7.3.511 had a ftplugin/python.vim that was broken
+" for compatible mode.
+let s:save_cpo = &cpo
+set cpo&vim
+
+" Load base python ftplugin (also defines b:did_ftplugin).
+source $VIMRUNTIME/ftplugin/python.vim
+
+" NOTE: Vim versions before 7.4.104 and later set this in ftplugin/python.vim.
+setlocal comments=b:#,fb:-
+
+" Restore pre-existing indentation settings.
+let &l:expandtab = s:save_expandtab
+let &l:shiftwidth = s:save_shiftwidth
+let &l:softtabstop = s:save_softtabstop
+let &l:tabstop = s:save_tabstop
+
+setlocal formatoptions-=t
+
+" Initially defined in the python ftplugin sourced above
+let b:undo_ftplugin .= " | setlocal fo<"
+
+" Make gf work with imports in BUILD files.
+setlocal includeexpr=substitute(v:fname,'//','','')
+
+" Enable syntax-based folding, if specified.
+if get(g:, 'ft_bzl_fold', 0)
+ setlocal foldmethod=syntax
+ setlocal foldtext=BzlFoldText()
+ let b:undo_ftplugin .= " | setlocal fdm< fdt<"
+endif
+
+if exists('*BzlFoldText')
+ let &cpo = s:save_cpo
+ unlet s:save_cpo
+ finish
+endif
+
+function BzlFoldText() abort
+ let l:start_num = nextnonblank(v:foldstart)
+ let l:end_num = prevnonblank(v:foldend)
+
+ if l:end_num <= l:start_num + 1
+ " If the fold is empty, don't print anything for the contents.
+ let l:content = ''
+ else
+ " Otherwise look for something matching the content regex.
+ " And if nothing matches, print an ellipsis.
+ let l:content = '...'
+ for l:line in getline(l:start_num + 1, l:end_num - 1)
+ let l:content_match = matchstr(l:line, '\m\C^\s*name = \zs.*\ze,$')
+ if !empty(l:content_match)
+ let l:content = l:content_match
+ break
+ endif
+ endfor
+ endif
+
+ " Enclose content with start and end
+ let l:start_text = getline(l:start_num)
+ let l:end_text = substitute(getline(l:end_num), '^\s*', '', '')
+ let l:text = l:start_text . ' ' . l:content . ' ' . l:end_text
+
+ " Compute the available width for the displayed text.
+ let l:width = winwidth(0) - &foldcolumn - (&number ? &numberwidth : 0)
+ let l:lines_folded = ' ' . string(1 + v:foldend - v:foldstart) . ' lines'
+
+ " Expand tabs, truncate, pad, and concatenate
+ let l:text = substitute(l:text, '\t', repeat(' ', &tabstop), 'g')
+ let l:text = strpart(l:text, 0, l:width - len(l:lines_folded))
+ let l:padding = repeat(' ', l:width - len(l:lines_folded) - len(l:text))
+ return l:text . l:padding . l:lines_folded
+endfunction
+
+let &cpo = s:save_cpo
+unlet s:save_cpo