Module:Gaps

local p = {}

local getArgs

function p.main(frame) if not getArgs then getArgs = require('Module:Arguments').getArgs end local args = getArgs(frame, {wrappers = 'Template:Gaps'})

local ret = mw.html.create('span') :css({['white-space'] = 'nowrap', ['font-size'] = args.size})

if args.lhs then ret:wikitext(args.lhs .. ' = ') end

local gap = string.lower(args.gap or )

local gapSize, gapUnit = string.match(gap,'([%d%.]+)%s*([ep][mnx])')

local acceptedUnits = { em = 'em', en = 'en', px = 'px' }

gapUnit = acceptedUnits[gapUnit]

if gapSize and gapUnit then gap = gapSize..gapUnit else gap = '0.25em' end

for k,v in ipairs(args) do if k == 1 then ret:wikitext(v) else ret:tag('span') :css('margin-left',gap) :wikitext(v) end end

if args.e then ret :tag('span') :css({['margin-left'] = '0.27em', ['margin-right']= '0.27em'}) :wikitext('×') :done() :wikitext(args.base or '10') :tag('span') :css('display','none') :wikitext('^') :done() :tag('sup') -- the double parentheses here are not redundant. -- they keep the second return value from being passed :wikitext((mw.ustring.gsub(args.e,'-','−'))) :done() end

if args.u then ret:wikitext(' ' .. args.u) end

return ret end

return p