Module:LinkPhone

local i = {} function i.LinkOnePhone(txt, demo)    local link = txt;    local othertxt = "";    local catprefix = '';    local catMissingCountryCode = '';    local catFormatIssue = '';    local output;    if demo == 'true' then    catprefix = ':';    end    -- any other text in brackets at the end is stored separately and ignored for the dialing number    if mw.ustring.gsub(txt, "(.*)( %([^0-9]*%))$", "%2") ~= txt then        othertxt = mw.ustring.gsub(txt, "(.*)( %([^0-9]*%))$", "%2");        txt = mw.ustring.gsub(txt, "(.*)( %([^0-9]*%))$", "%1");    end    -- Don't include "ext NNNN" in the link    link = mw.ustring.gsub(txt, " +[Ee][Xx][Tt] +%d+$", "");    -- Don't include " xNNNN" in the link    link = mw.ustring.gsub(link, " +x%d+$", "");    link = mw.ustring.gsub(link, " ", "");    link = mw.ustring.gsub(link, "'", "");    if link == "" then        return "";    end    if mw.ustring.sub(link, 1, 1) ~= '+' then    catMissingCountryCode = '[[' .. catprefix .. 'Categorie:Wikivoyage:Item met telefoonnummer zonder landcode]]<span class="phoneinfo" style="display:none;">NOCC</span>';    end    if mw.ustring.match(link,"^%+[%d-() ]+$") ~= nil then        output = '<span class="plainlinks nourlexpansion">[tel:' .. link .. ' ' .. txt .. ']</span>' .. othertxt;    elseif mw.ustring.match(link,"^%+[%d%u- ]+$") ~= nil then        local extra = mw.ustring.match(link, "%u[%d%u- ]+")        link = mw.ustring.gsub(link, "[A-C]", "2");        link = mw.ustring.gsub(link, "[D-F]", "3");        link = mw.ustring.gsub(link, "[G-I]", "4");        link = mw.ustring.gsub(link, "[J-L]", "5");        link = mw.ustring.gsub(link, "[M-O]", "6");        link = mw.ustring.gsub(link, "[P-S]", "7");        link = mw.ustring.gsub(link, "[T-V]", "8");        link = mw.ustring.gsub(link, "[W-Z]", "9");        extra = mw.ustring.gsub(extra, "[A-C]", "2");        extra = mw.ustring.gsub(extra, "[D-F]", "3");        extra = mw.ustring.gsub(extra, "[G-I]", "4");        extra = mw.ustring.gsub(extra, "[J-L]", "5");        extra = mw.ustring.gsub(extra, "[M-O]", "6");        extra = mw.ustring.gsub(extra, "[P-S]", "7");        extra = mw.ustring.gsub(extra, "[T-V]", "8");        extra = mw.ustring.gsub(extra, "[W-Z]", "9");        output = '<span class="plainlinks nourlexpansion">[tel:' .. link .. ' ' .. txt .. ' (' .. extra .. ')' ..']</span>' .. othertxt;    else        output = txt .. othertxt;        if mw.ustring.match('+' .. link,"^%+[%d-() ]+$") == nil then            catFormatIssue = '[[' .. catprefix .. 'Categorie:Wikivoyage:Item met onjuiste opmaak telefoonnummer]]<span class="phoneinfo" style="display:none;">FORMAT</span>';        end    end    if mw.ustring.match(link,"%(0%)") ~= nil then        catFormatIssue = '[[' .. catprefix .. 'Categorie:Wikivoyage:Item met onjuiste opmaak telefoonnummer]]<span class="phoneinfo" style="display:none;">FORMAT</span>';    end    if mw.title.getCurrentTitle().namespace == 0 or demo == 'true' then        output = output .. catFormatIssue .. catMissingCountryCode;    end    return output;endfunction i.LinkPhone(frame)    local demo = frame.args["demo"] or '';    local txtall = frame.args[1] or '' .. ',';    local txt = "";    local result = "";    local catprefix = '';    -- replace or / and with comma    txtall = mw.ustring.gsub(txtall, " or %+", ", +");    txtall = mw.ustring.gsub(txtall, " and %+", ", +");    for txt in mw.ustring.gmatch(txtall, "([^,]+)") do        result = result .. ", " .. i.LinkOnePhone(txt, demo)    end    result = mw.ustring.sub(result, 3, mw.ustring.len(result) );    return result;end return i;