This module is rated asbeta, and is ready for widespread use. It is still new and should be used with some caution to ensure the results are as expected.
This Lua module is used onapproximately 111,000 pages. To avoid major disruption and server load, any changes should be tested in the module's/sandbox or/testcases subpages, or in your ownmodule sandbox. The tested changes can be added to this page in a single edit. Consider discussing changes on thetalk page before implementing them.
This module depends on the following other modules:
Here, (arg1a,arg1b), (arg2a,arg2b,arg2c), are tuples of the conflicting parameters.
By default, the module ignores blank parameters which is useful for{{if empty}} chains of parameters. For nested chains of parameters, use|nested=1 to consider blank parameters as well.
By default, the delimiter for the tuples is; but this can be changed with|delimiter=.
The value of|template= is used to for the text of the preview warning message. When omitted, the module will use a generic message.
localp={}localfunctiontrim(s)returns:match('^%s*(.-)%s*$')endlocalfunctionisnotempty(s)returnsands:match('%S')endfunctionp.check(frame)localargs=frame.argslocalpargs=frame:getParent().argslocalchecknested=isnotempty(args['nested'])localdelimiter=isnotempty(args['delimiter'])andargs['delimiter']or';'localargpairs={}fork,vinpairs(args)doiftype(k)=='number'thenlocalplist=mw.text.split(v,delimiter)localpfound={}localcount=0forii,vvinipairs(plist)dovv=trim(vv)ifchecknestedandpargs[vv]orisnotempty(pargs[vv])thencount=count+1table.insert(pfound,vv)endendifcount>1thentable.insert(argpairs,pfound)endendendlocalwarnmsg={}localres=''localcat=''ifargs['cat']andmw.ustring.match(args['cat'],'^[Cc][Aa][Tt][Ee][Gg][Oo][Rr][Yy]:')thencat=args['cat']endlocaltemplate=args['template']and' in '..args['template']or''if#argpairs>0thenfori,vinipairs(argpairs)dotable.insert(warnmsg,mw.ustring.format('Using more than one of the following parameters%s: <code>%s</code>.',template,table.concat(v,'</code>, <code>')))ifcat~=''thenres=res..'[['..cat..'|'..(v[1]==''and' 'or'')..v[1]..']]'endendendif#warnmsg>0thenres=require('Module:If preview')._warning({table.concat(warnmsg,'<br>')})..resendreturnresendreturnp
