local wikis_t = {'en', 'local'}; -- do tests for each of these keys; en.wiki first, local.wiki second  
for _, test_type in ipairs (test_types_t) do -- for each test type
for _, generic_value in pairs (cfg.special_case_translation[item][test_type]) do -- spin through the list of generic value fragments to accept or reject
for _, wiki in ipairs (wikis_t) do
if generic_value[wiki] then
if test (value, generic_value[wiki], wiki) then -- go do the test
return ('reject' == test_type); -- param value rejected, return true; false else
end
end
end
end
end
end  
----------------------------< N A M E _ I S _ G E N E R I C >------------------------------------------------  
calls is_generic to determine if <name> is a 'generic name' listed in cfg.generic_names; <name_alias> is the
parameter name used in error messaging  
local function name_is_generic (name, name_alias)
if not added_generic_name_errs and is_generic ('generic_names', name) then
utilities.set_message ('err_generic_name', name_alias); -- set an error message
added_generic_name_errs = true;
end
end  
----------------------------< N A M E _ C H E C K S >--------------------------------------------------------  
This function calls various name checking functions used to validate the content of the various name-holding parameters.  
local function name_checks (last, first, list_name, last_alias, first_alias)
local accept_name;  
if utilities.is_set (last) then
last, accept_name = utilities.has_accept_as_written (last); -- remove accept-this-as-written markup when it wraps all of <last>  
if not accept_name then -- <last> not wrapped in accept-as-written markup
name_has_mult_names (last, list_name); -- check for multiple names in the parameter (last only)
name_is_numeric (last, list_name); -- check for names that are composed of digits and punctuation
name_is_generic (last, last_alias); -- check for names found in the generic names list
end
end  
if utilities.is_set (first) then
first, accept_name = utilities.has_accept_as_written (first); -- remove accept-this-as-written markup when it wraps all of <first>  
if not accept_name then -- <first> not wrapped in accept-as-written markup
name_is_numeric (first, list_name); -- check for names that are composed of digits and punctuation
name_is_generic (first, first_alias); -- check for names found in the generic names list
end
local wl_type, D = utilities.is_wikilink (first);
if 0 ~= wl_type then
first = D;
utilities.set_message ('err_bad_paramlink', first_alias);
end
end  
return last, first; -- done
end  
--lastn= and |firstn= parameters
(or their aliases), and their matching link and mask parameters. Stops searching
when both |lastn= and |firstn= are not found in args after two sequential attempts:
found |last1=, |last2=, and |last3= but doesn't find |last4= and |last5= then the
search is done.  
This function emits an error message when there is a |firstn= without a matching
|lastn=. When there are 'holes' in the list of last names, |last1= and |last3=
are present but |last2= is missing, an error message is emitted. |lastn= is not
required to have a matching |firstn=.  
When an author or editor parameter contains some form of 'et al.', the 'et al.'
is stripped from the parameter and a flag (etal) returned that will cause list_people
to add the static 'et al.' text from Module:Citation/CS1/Configuration. This keeps
'et al.' out of the template's metadata. When this occurs, an error is emitted.  
local function extract_names(args, list_name)
local names = {}; -- table of names
local last; -- individual name components
local first;
local link;
local mask;
local i = 1; -- loop counter/indexer
local n = 1; -- output table indexer
local count = 0; -- used to count the number of times we haven't found a |last= (or alias for authors, |editor-last or alias for editors)
local etal = false; -- return value set to true when we find some form of et al. in an author parameter  
local last_alias, first_alias, link_alias; -- selected parameter aliases used in error messaging
while true do
last, last_alias = utilities.select_one ( args, cfg.aliases[list_name .. '-Last'], 'err_redundant_parameters', i ); -- search through args for name components beginning at 1
first, first_alias = utilities.select_one ( args, cfg.aliases[list_name .. '-First'], 'err_redundant_parameters', i );
link, link_alias = utilities.select_one ( args, cfg.aliases[list_name .. '-Link'], 'err_redundant_parameters', i );
mask = utilities.select_one ( args, cfg.aliases[list_name .. '-Mask'], 'err_redundant_parameters', i );  
last, etal = name_has_etal (last, etal, false, last_alias); -- find and remove variations on et al.
first, etal = name_has_etal (first, etal, false, first_alias); -- find and remove variations on et al.
last, first = name_checks (last, first, list_name, last_alias, first_alias); -- multiple names, extraneous annotation, etc. checks  
if first and not last then -- if there is a firstn without a matching lastn
local alias = first_alias:find ('given', 1, true) and 'given' or 'first'; -- get first or given form of the alias
utilities.set_message ('err_first_missing_last', {
first_alias, -- param name of alias missing its mate
first_alias:gsub (alias, {['first'] = 'last', ['given'] = 'surname'}), -- make param name appropriate to the alias form
}); -- add this error message
elseif not first and not last then -- if both firstn and lastn aren't found, are we done?
count = count + 1; -- number of times we haven't found last and first
if 2 <= count then -- two missing names and we give up
break; -- normal exit or there is a two-name hole in the list; can't tell which
end
else -- we have last with or without a first
local result;
link = link_title_ok (link, link_alias, last, last_alias); -- check for improper wiki-markup  
if first then
link = link_title_ok (link, link_alias, first, first_alias); -- check for improper wiki-markup
end  
names[n] = {last = last, first = first, link = link, mask = mask, corporate = false}; -- add this name to our names list (corporate for |vauthors= only)
n = n + 1; -- point to next location in the names table
if 1 == count then -- if the previous name was missing
utilities.set_message ('err_missing_name', {list_name:match ("(%w+)List"):lower, i - 1}); -- add this error message
end
count = 0; -- reset the counter, we're looking for two consecutive missing names
end
i = i + 1; -- point to next args location
end  
return names, etal; -- all done, return our list of names and the etal flag
end  
--language=<lang_param> and return language name and matching tag; nil else.  
This function looks for:
<lang_param> as a tag in cfg.lang_code_remap{}
<lang_param> as a name in cfg.lang_name_remap{}  
<lang_param> as a name in cfg.mw_languages_by_name_t
<lang_param> as a tag in cfg.mw_languages_by_tag_t
when those fail, presume that <lang_param> is an IETF-like tag that MediaWiki does not recognize. Strip all
script, region, variant, whatever subtags from <lang_param> to leave just a two or three character language tag
and look for the new <lang_param> in cfg.mw_languages_by_tag_t{}  
on success, returns name (in properly capitalized form) and matching tag (in lowercase); on failure returns nil  
local function name_tag_get (lang_param)
local lang_param_lc = mw.ustring.lower (lang_param); -- use lowercase as an index into the various tables
local name;
local tag;  
name = cfg.lang_code_remap[lang_param_lc]; -- assume <lang_param_lc> is a tag; attempt to get remapped language name
if name then -- when <name>, <lang_param> is a tag for a remapped language name
return name, lang_param_lc; -- so return <name> from remap and <lang_param_lc>
end  
tag = lang_param_lc:match ('^(%a%a%a?)%-.*'); -- still assuming that <lang_param_lc> is a tag; strip script, region, variant subtags
name = cfg.lang_code_remap[tag]; -- attempt to get remapped language name with language subtag only
if name then -- when <name>, <tag> is a tag for a remapped language name