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" Vim script
" Author: Peter Odding <peter@peterodding.com>
" Last Change: June 13, 2011
" URL: http://peterodding.com/code/vim/easytags/
let s:script = expand('<sfile>:p:~')
" Public interface through (automatic) commands. {{{1
function! xolox#easytags#register(global) " {{{2
" Parse the &tags option and get a list of all tags files *including
" non-existing files* (this is why we can't just call tagfiles()).
let tagfiles = xolox#misc#option#split_tags(&tags)
let expanded = map(copy(tagfiles), 'resolve(expand(v:val))')
" Add the filename to the &tags option when the user hasn't done so already.
let tagsfile = a:global ? g:easytags_file : xolox#easytags#get_tagsfile()
if index(expanded, xolox#misc#path#absolute(tagsfile)) == -1
" This is a real mess because of bugs in Vim?! :let &tags = '...' doesn't
" work on UNIX and Windows, :set tags=... doesn't work on Windows. What I
" mean with "doesn't work" is that tagfiles() == [] after the :let/:set
" command even though the tags file exists! One easy way to confirm that
" this is a bug in Vim is to type :set tags= then press <Tab> followed by
" <CR>. Now you entered the exact same value that the code below also did
" but suddenly Vim sees the tags file and tagfiles() != [] :-S
call add(tagfiles, tagsfile)
let value = xolox#misc#option#join_tags(tagfiles)
let cmd = (a:global ? 'set' : 'setl') . ' tags=' . escape(value, '\ ')
if xolox#misc#os#is_win() && v:version < 703
" TODO How to clear the expression from Vim's status line?
call feedkeys(":" . cmd . "|let &ro=&ro\<CR>", 'n')
else
execute cmd
endif
endif
endfunction
function! xolox#easytags#autoload() " {{{2
try
" Update entries for current file in tags file?
let pathname = s:resolve(expand('%:p'))
if pathname != ''
let tags_outdated = getftime(pathname) > getftime(xolox#easytags#get_tagsfile())
if tags_outdated || !xolox#easytags#file_has_tags(pathname)
call xolox#easytags#update(1, 0, [])
endif
endif
" Apply highlighting of tags to current buffer?
if &eventignore !~? '\<syntax\>'
if !exists('b:easytags_last_highlighted')
call xolox#easytags#highlight()
else
for tagfile in tagfiles()
if getftime(tagfile) > b:easytags_last_highlighted
call xolox#easytags#highlight()
break
endif
endfor
endif
let b:easytags_last_highlighted = localtime()
endif
catch
call xolox#misc#msg#warn("%s: %s (at %s)", s:script, v:exception, v:throwpoint)
endtry
endfunction
function! xolox#easytags#update(silent, filter_tags, filenames) " {{{2
try
let s:cached_filenames = {}
let starttime = xolox#misc#timer#start()
let cfile = s:check_cfile(a:silent, a:filter_tags, !empty(a:filenames))
let tagsfile = xolox#easytags#get_tagsfile()
let firstrun = !filereadable(tagsfile)
let cmdline = s:prep_cmdline(cfile, tagsfile, firstrun, a:filenames)
let output = s:run_ctags(starttime, cfile, tagsfile, firstrun, cmdline)
if !firstrun
let num_filtered = s:filter_merge_tags(a:filter_tags, tagsfile, output)
if cfile != ''
let msg = "%s: Updated tags for %s in %s."
call xolox#misc#timer#stop(msg, s:script, expand('%:p:~'), starttime)
elseif !empty(a:filenames)
let msg = "%s: Updated tags in %s."
call xolox#misc#timer#stop(msg, s:script, starttime)
else
let msg = "%s: Filtered %i invalid tags in %s."
call xolox#misc#timer#stop(msg, s:script, num_filtered, starttime)
endif
endif
" When :UpdateTags was executed manually we'll refresh the dynamic
" syntax highlighting so that new tags are immediately visible.
if !a:silent
HighlightTags
endif
return 1
catch
call xolox#misc#msg#warn("%s: %s (at %s)", s:script, v:exception, v:throwpoint)
finally
unlet s:cached_filenames
endtry
endfunction
function! s:check_cfile(silent, filter_tags, have_args) " {{{3
if a:have_args
return ''
endif
let silent = a:silent || a:filter_tags
if g:easytags_autorecurse
let cdir = s:resolve(expand('%:p:h'))
if !isdirectory(cdir)
if silent | return '' | endif
throw "The directory of the current file doesn't exist yet!"
endif
return cdir
endif
let cfile = s:resolve(expand('%:p'))
if cfile == '' || !filereadable(cfile)
if silent | return '' | endif
throw "You'll need to save your file before using :UpdateTags!"
elseif g:easytags_ignored_filetypes != '' && &ft =~ g:easytags_ignored_filetypes
if silent | return '' | endif
throw "The " . string(&ft) . " file type is explicitly ignored."
elseif index(xolox#easytags#supported_filetypes(), &ft) == -1
if silent | return '' | endif
throw "Exuberant Ctags doesn't support the " . string(&ft) . " file type!"
endif
return cfile
endfunction
function! s:prep_cmdline(cfile, tagsfile, firstrun, arguments) " {{{3
let cmdline = [g:easytags_cmd, '--fields=+l', '--c-kinds=+p', '--c++-kinds=+p']
if a:firstrun
call add(cmdline, shellescape('-f' . a:tagsfile))
call add(cmdline, '--sort=' . (&ic ? 'foldcase' : 'yes'))
else
call add(cmdline, '--sort=no')
call add(cmdline, '-f-')
endif
if g:easytags_include_members
call add(cmdline, '--extra=+q')
endif
let have_args = 0
if a:cfile != ''
if g:easytags_autorecurse
call add(cmdline, '-R')
call add(cmdline, shellescape(a:cfile))
else
let filetype = xolox#easytags#to_ctags_ft(&filetype)
call add(cmdline, shellescape('--language-force=' . filetype))
call add(cmdline, shellescape(a:cfile))
endif
let have_args = 1
else
for arg in a:arguments
if arg =~ '^-'
call add(cmdline, arg)
let have_args = 1
else
let matches = split(expand(arg), "\n")
if !empty(matches)
call map(matches, 'shellescape(s:canonicalize(v:val))')
call extend(cmdline, matches)
let have_args = 1
endif
endif
endfor
endif
" No need to run Exuberant Ctags without any filename arguments!
return have_args ? join(cmdline) : ''
endfunction
function! s:run_ctags(starttime, cfile, tagsfile, firstrun, cmdline) " {{{3
let output = []
if a:cmdline != ''
call xolox#misc#msg#debug("%s: Executing %s", s:script, a:cmdline)
try
let output = xolox#shell#execute(a:cmdline, 1)
catch /^Vim\%((\a\+)\)\=:E117/
" Ignore missing shell.vim plug-in.
let output = split(system(a:cmdline), "\n")
if v:shell_error
let msg = "Failed to update tags file %s: %s!"
throw printf(msg, fnamemodify(a:tagsfile, ':~'), strtrans(join(output, "\n")))
endif
endtry
if a:firstrun
if a:cfile != ''
call xolox#easytags#add_tagged_file(a:cfile)
call xolox#misc#timer#stop("%s: Created tags for %s in %s.", s:script, expand('%:p:~'), a:starttime)
else
call xolox#misc#timer#stop("%s: Created tags in %s.", s:script, a:starttime)
endif
endif
endif
return output
endfunction
function! s:filter_merge_tags(filter_tags, tagsfile, output) " {{{3
let [headers, entries] = xolox#easytags#read_tagsfile(a:tagsfile)
call s:set_tagged_files(entries)
let filters = []
let tagged_files = s:find_tagged_files(a:output)
if !empty(tagged_files)
call add(filters, '!has_key(tagged_files, s:canonicalize(get(v:val, 1)))')
endif
if a:filter_tags
call add(filters, 'filereadable(get(v:val, 1))')
endif
let num_old_entries = len(entries)
if !empty(filters)
call filter(entries, join(filters, ' && '))
endif
let num_filtered = num_old_entries - len(entries)
call map(entries, 'join(v:val, "\t")')
call extend(entries, a:output)
if !xolox#easytags#write_tagsfile(a:tagsfile, headers, entries)
let msg = "Failed to write filtered tags file %s!"
throw printf(msg, fnamemodify(a:tagsfile, ':~'))
endif
return num_filtered
endfunction
function! s:find_tagged_files(new_entries) " {{{3
let tagged_files = {}
for line in a:new_entries
" Never corrupt the tags file by merging an invalid line
" (probably an error message) with the existing tags!
if match(line, '^[^\t]\+\t[^\t]\+\t.\+$') == -1
throw "Exuberant Ctags returned invalid data: " . strtrans(line)
endif
let filename = matchstr(line, '^[^\t]\+\t\zs[^\t]\+')
if !has_key(tagged_files, filename)
let filename = s:canonicalize(filename)
let tagged_files[filename] = 1
call xolox#easytags#add_tagged_file(filename)
endif
endfor
return tagged_files
endfunction
function! xolox#easytags#highlight() " {{{2
try
" Treat C++ and Objective-C as plain C.
let filetype = get(s:canonical_aliases, &ft, &ft)
let tagkinds = get(s:tagkinds, filetype, [])
if exists('g:syntax_on') && !empty(tagkinds) && !exists('b:easytags_nohl')
let starttime = xolox#misc#timer#start()
if !has_key(s:aliases, filetype)
let ctags_filetype = xolox#easytags#to_ctags_ft(filetype)
let taglist = filter(taglist('.'), "get(v:val, 'language', '') ==? ctags_filetype")
else
let aliases = s:aliases[&ft]
let taglist = filter(taglist('.'), "has_key(aliases, tolower(get(v:val, 'language', '')))")
endif
for tagkind in tagkinds
let hlgroup_tagged = tagkind.hlgroup . 'Tag'
if hlexists(hlgroup_tagged)
execute 'syntax clear' hlgroup_tagged
else
execute 'highlight def link' hlgroup_tagged tagkind.hlgroup
endif
let matches = filter(copy(taglist), tagkind.filter)
if matches != []
call map(matches, 'xolox#misc#escape#pattern(get(v:val, "name"))')
let pattern = tagkind.pattern_prefix . '\%(' . join(xolox#misc#list#unique(matches), '\|') . '\)' . tagkind.pattern_suffix
let template = 'syntax match %s /%s/ containedin=ALLBUT,.*String.*,.*Comment.*,cIncluded'
let command = printf(template, hlgroup_tagged, escape(pattern, '/'))
try
execute command
catch /^Vim\%((\a\+)\)\=:E339/
let msg = "easytags.vim: Failed to highlight %i %s tags because pattern is too big! (%i KB)"
call xolox#misc#msg#warn(printf(msg, len(matches), tagkind.hlgroup, len(pattern) / 1024))
endtry
endif
endfor
redraw
let bufname = expand('%:p:~')
if bufname == ''
let bufname = 'unnamed buffer #' . bufnr('%')
endif
let msg = "%s: Highlighted tags in %s in %s."
call xolox#misc#timer#stop(msg, s:script, bufname, starttime)
return 1
endif
catch
call xolox#misc#msg#warn("%s: %s (at %s)", s:script, v:exception, v:throwpoint)
endtry
endfunction
" Public supporting functions (might be useful to others). {{{1
function! xolox#easytags#supported_filetypes() " {{{2
if !exists('s:supported_filetypes')
let starttime = xolox#misc#timer#start()
let command = g:easytags_cmd . ' --list-languages'
try
let listing = xolox#shell#execute(command, 1)
catch /^Vim\%((\a\+)\)\=:E117/
" Ignore missing shell.vim plug-in.
let listing = split(system(command), "\n")
if v:shell_error
let msg = "Failed to get supported languages! (output: %s)"
throw printf(msg, strtrans(join(listing, "\n")))
endif
endtry
let s:supported_filetypes = map(copy(listing), 's:check_filetype(listing, v:val)')
let msg = "%s: Retrieved %i supported languages in %s."
call xolox#misc#timer#stop(msg, s:script, len(s:supported_filetypes), starttime)
endif
return s:supported_filetypes
endfunction
function! s:check_filetype(listing, cline)
if a:cline !~ '^\w\S*$'
let msg = "Failed to get supported languages! (output: %s)"
throw printf(msg, strtrans(join(a:listing, "\n")))
endif
return xolox#easytags#to_vim_ft(a:cline)
endfunction
function! xolox#easytags#read_tagsfile(tagsfile) " {{{2
" I'm not sure whether this is by design or an implementation detail but
" it's possible for the "!_TAG_FILE_SORTED" header to appear after one or
" more tags and Vim will apparently still use the header! For this reason
" the xolox#easytags#write_tagsfile() function should also recognize it, otherwise
" Vim might complain with "E432: Tags file not sorted".
let headers = []
let entries = []
let pattern = '^\([^\t]\+\)\t\([^\t]\+\)\t\(.\+\)$'
for line in readfile(a:tagsfile)
if line =~# '^!_TAG_'
call add(headers, line)
else
call add(entries, matchlist(line, pattern)[1:3])
endif
endfor
return [headers, entries]
endfunction
function! xolox#easytags#write_tagsfile(tagsfile, headers, entries) " {{{2
" This function always sorts the tags file but understands "foldcase".
let sort_order = 1
for line in a:headers
if match(line, '^!_TAG_FILE_SORTED\t2') == 0
let sort_order = 2
endif
endfor
if sort_order == 1
call sort(a:entries)
else
call sort(a:entries, 1)
endif
let lines = []
if xolox#misc#os#is_win()
" Exuberant Ctags on Windows requires \r\n but Vim's writefile() doesn't add them!
for line in a:headers
call add(lines, line . "\r")
endfor
for line in a:entries
call add(lines, line . "\r")
endfor
else
call extend(lines, a:headers)
call extend(lines, a:entries)
endif
return writefile(lines, a:tagsfile) == 0
endfunction
function! xolox#easytags#file_has_tags(filename) " {{{2
call s:cache_tagged_files()
return has_key(s:tagged_files, s:resolve(a:filename))
endfunction
function! xolox#easytags#add_tagged_file(filename) " {{{2
call s:cache_tagged_files()
let filename = s:resolve(a:filename)
let s:tagged_files[filename] = 1
endfunction
function! xolox#easytags#get_tagsfile() " {{{2
let tagsfile = expand(g:easytags_file)
if !empty(g:easytags_by_filetype) && !empty(&filetype)
let directory = xolox#misc#path#absolute(g:easytags_by_filetype)
let tagsfile = xolox#misc#path#merge(directory, &filetype)
elseif g:easytags_dynamic_files
let files = tagfiles()
if len(files) > 0
let tagsfile = files[0]
endif
endif
if filereadable(tagsfile) && filewritable(tagsfile) != 1
let message = "The tags file %s isn't writable!"
throw printf(message, fnamemodify(tagsfile, ':~'))
endif
return tagsfile
endfunction
" Public API for file-type specific dynamic syntax highlighting. {{{1
function! xolox#easytags#define_tagkind(object) " {{{2
if !has_key(a:object, 'pattern_prefix')
let a:object.pattern_prefix = '\C\<'
endif
if !has_key(a:object, 'pattern_suffix')
let a:object.pattern_suffix = '\>'
endif
if !has_key(s:tagkinds, a:object.filetype)
let s:tagkinds[a:object.filetype] = []
endif
call add(s:tagkinds[a:object.filetype], a:object)
endfunction
function! xolox#easytags#map_filetypes(vim_ft, ctags_ft) " {{{2
call add(s:vim_filetypes, a:vim_ft)
call add(s:ctags_filetypes, a:ctags_ft)
endfunction
function! xolox#easytags#alias_filetypes(...) " {{{2
for type in a:000
let s:canonical_aliases[type] = a:1
if !has_key(s:aliases, type)
let s:aliases[type] = {}
endif
endfor
for i in range(a:0)
for j in range(a:0)
let vimft1 = a:000[i]
let ctagsft1 = xolox#easytags#to_ctags_ft(vimft1)
let vimft2 = a:000[j]
let ctagsft2 = xolox#easytags#to_ctags_ft(vimft2)
if !has_key(s:aliases[vimft1], ctagsft2)
let s:aliases[vimft1][ctagsft2] = 1
endif
if !has_key(s:aliases[vimft2], ctagsft1)
let s:aliases[vimft2][ctagsft1] = 1
endif
endfor
endfor
endfunction
function! xolox#easytags#to_vim_ft(ctags_ft) " {{{2
let type = tolower(a:ctags_ft)
let index = index(s:ctags_filetypes, type)
return index >= 0 ? s:vim_filetypes[index] : type
endfunction
function! xolox#easytags#to_ctags_ft(vim_ft) " {{{2
let type = tolower(a:vim_ft)
let index = index(s:vim_filetypes, type)
return index >= 0 ? s:ctags_filetypes[index] : type
endfunction
" Miscellaneous script-local functions. {{{1
function! s:resolve(filename) " {{{2
if g:easytags_resolve_links
return resolve(a:filename)
else
return a:filename
endif
endfunction
function! s:canonicalize(filename) " {{{2
if has_key(s:cached_filenames, a:filename)
return s:cached_filenames[a:filename]
endif
let canonical = s:resolve(fnamemodify(a:filename, ':p'))
let s:cached_filenames[a:filename] = canonical
return canonical
endif
endfunction
function! s:cache_tagged_files() " {{{2
if !exists('s:tagged_files')
let tagsfile = xolox#easytags#get_tagsfile()
try
let [headers, entries] = xolox#easytags#read_tagsfile(tagsfile)
call s:set_tagged_files(entries)
catch /\<E484\>/
" Ignore missing tags file.
call s:set_tagged_files([])
endtry
endif
endfunction
function! s:set_tagged_files(entries) " {{{2
" TODO use taglist() instead of readfile() so that all tag files are
" automatically used :-)
let s:tagged_files = {}
for entry in a:entries
let filename = get(entry, 1, '')
if filename != ''
let s:tagged_files[s:resolve(filename)] = 1
endif
endfor
endfunction
" Built-in file type & tag kind definitions. {{{1
" Don't bother redefining everything below when this script is sourced again.
if exists('s:tagkinds')
finish
endif
let s:tagkinds = {}
" Define the built-in Vim <=> Ctags file-type mappings.
let s:vim_filetypes = []
let s:ctags_filetypes = []
call xolox#easytags#map_filetypes('cpp', 'c++')
call xolox#easytags#map_filetypes('cs', 'c#')
call xolox#easytags#map_filetypes(exists('g:filetype_asp') ? g:filetype_asp : 'aspvbs', 'asp')
" Define the Vim file-types that are aliased by default.
let s:aliases = {}
let s:canonical_aliases = {}
call xolox#easytags#alias_filetypes('c', 'cpp', 'objc', 'objcpp')
" Enable line continuation.
let s:cpo_save = &cpo
set cpo&vim
" Lua. {{{2
call xolox#easytags#define_tagkind({
\ 'filetype': 'lua',
\ 'hlgroup': 'luaFunc',
\ 'filter': 'get(v:val, "kind") ==# "f"'})
" C. {{{2
call xolox#easytags#define_tagkind({
\ 'filetype': 'c',
\ 'hlgroup': 'cType',
\ 'filter': 'get(v:val, "kind") =~# "[cgstu]"'})
call xolox#easytags#define_tagkind({
\ 'filetype': 'c',
\ 'hlgroup': 'cEnum',
\ 'filter': 'get(v:val, "kind") ==# "e"'})
call xolox#easytags#define_tagkind({
\ 'filetype': 'c',
\ 'hlgroup': 'cPreProc',
\ 'filter': 'get(v:val, "kind") ==# "d"'})
call xolox#easytags#define_tagkind({
\ 'filetype': 'c',
\ 'hlgroup': 'cFunction',
\ 'filter': 'get(v:val, "kind") =~# "[fp]"'})
highlight def link cEnum Identifier
highlight def link cFunction Function
if g:easytags_include_members
call xolox#easytags#define_tagkind({
\ 'filetype': 'c',
\ 'hlgroup': 'cMember',
\ 'filter': 'get(v:val, "kind") ==# "m"'})
highlight def link cMember Identifier
endif
" PHP. {{{2
call xolox#easytags#define_tagkind({
\ 'filetype': 'php',
\ 'hlgroup': 'phpFunctions',
\ 'filter': 'get(v:val, "kind") ==# "f"',
\ 'pattern_suffix': '(\@='})
call xolox#easytags#define_tagkind({
\ 'filetype': 'php',
\ 'hlgroup': 'phpClasses',
\ 'filter': 'get(v:val, "kind") ==# "c"'})
" Vim script. {{{2
call xolox#easytags#define_tagkind({
\ 'filetype': 'vim',
\ 'hlgroup': 'vimAutoGroup',
\ 'filter': 'get(v:val, "kind") ==# "a"'})
highlight def link vimAutoGroup vimAutoEvent
call xolox#easytags#define_tagkind({
\ 'filetype': 'vim',
\ 'hlgroup': 'vimCommand',
\ 'filter': 'get(v:val, "kind") ==# "c"',
\ 'pattern_prefix': '\(\(^\|\s\):\?\)\@<=',
\ 'pattern_suffix': '\(!\?\(\s\|$\)\)\@='})
" Exuberant Ctags doesn't mark script local functions in Vim scripts as
" "static". When your tags file contains search patterns this plug-in can use
" those search patterns to check which Vim script functions are defined
" globally and which script local.
call xolox#easytags#define_tagkind({
\ 'filetype': 'vim',
\ 'hlgroup': 'vimFuncName',
\ 'filter': 'get(v:val, "kind") ==# "f" && get(v:val, "cmd") !~? ''<sid>\w\|\<s:\w''',
\ 'pattern_prefix': '\C\%(\<s:\|<[sS][iI][dD]>\)\@<!\<'})
call xolox#easytags#define_tagkind({
\ 'filetype': 'vim',
\ 'hlgroup': 'vimScriptFuncName',
\ 'filter': 'get(v:val, "kind") ==# "f" && get(v:val, "cmd") =~? ''<sid>\w\|\<s:\w''',
\ 'pattern_prefix': '\C\%(\<s:\|<[sS][iI][dD]>\)'})
highlight def link vimScriptFuncName vimFuncName
" Python. {{{2
call xolox#easytags#define_tagkind({
\ 'filetype': 'python',
\ 'hlgroup': 'pythonFunction',
\ 'filter': 'get(v:val, "kind") ==# "f"',
\ 'pattern_prefix': '\%(\<def\s\+\)\@<!\<'})
call xolox#easytags#define_tagkind({
\ 'filetype': 'python',
\ 'hlgroup': 'pythonMethod',
\ 'filter': 'get(v:val, "kind") ==# "m"',
\ 'pattern_prefix': '\.\@<='})
call xolox#easytags#define_tagkind({
\ 'filetype': 'python',
\ 'hlgroup': 'pythonClass',
\ 'filter': 'get(v:val, "kind") ==# "c"'})
highlight def link pythonMethodTag pythonFunction
highlight def link pythonClassTag pythonFunction
" Java. {{{2
call xolox#easytags#define_tagkind({
\ 'filetype': 'java',
\ 'hlgroup': 'javaClass',
\ 'filter': 'get(v:val, "kind") ==# "c"'})
call xolox#easytags#define_tagkind({
\ 'filetype': 'java',
\ 'hlgroup': 'javaMethod',
\ 'filter': 'get(v:val, "kind") ==# "m"'})
highlight def link javaClass Identifier
highlight def link javaMethod Function
" C#. {{{2
" TODO C# name spaces?
" TODO C# interface names
" TODO C# enumeration member names
" TODO C# structure names?
call xolox#easytags#define_tagkind({
\ 'filetype': 'cs',
\ 'hlgroup': 'csClassOrStruct',
\ 'filter': 'get(v:val, "kind") ==# "c"'})
call xolox#easytags#define_tagkind({
\ 'filetype': 'cs',
\ 'hlgroup': 'csMethod',
\ 'filter': 'get(v:val, "kind") =~# "[ms]"'})
highlight def link csClassOrStruct Identifier
highlight def link csMethod Function
" Ruby. {{{2
call xolox#easytags#define_tagkind({
\ 'filetype': 'ruby',
\ 'hlgroup': 'rubyModuleName',
\ 'filter': 'get(v:val, "kind") ==# "m"'})
call xolox#easytags#define_tagkind({
\ 'filetype': 'ruby',
\ 'hlgroup': 'rubyClassName',
\ 'filter': 'get(v:val, "kind") ==# "c"'})
call xolox#easytags#define_tagkind({
\ 'filetype': 'ruby',
\ 'hlgroup': 'rubyMethodName',
\ 'filter': 'get(v:val, "kind") =~# "[fF]"'})
highlight def link rubyModuleName Type
highlight def link rubyClassName Type
highlight def link rubyMethodName Function
" }}}
" Restore "cpoptions".
let &cpo = s:cpo_save
unlet s:cpo_save
" vim: ts=2 sw=2 et
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