Hi Juan,
you cannot see single linebreaks in tiddlerwiki5, only double ones. So to 
create two rows of a table 

ret = "|a1|b1|\n|a2|b2|\n\n"

all the best

BJ
On Friday, April 28, 2017 at 6:22:25 AM UTC+2, juan erasmo gomez wrote:
>
> Hi
>
> I'm writing a small macro to create a table. The idea behind the macro is 
> that I'll receive the number of columns as a parameter and work from there.
> So far I've been able to create the first line of the table, but I haven't 
> found a way to add a line break and to add the second row of the table:
>
> /*\
> title: TrxMacro2
> type: application/javascript
> module-type: macro
> \*/
> (function(){
>
> /*jslint node: true, browser: true */
> /*global $tw: false */
> "use strict";
>
> exports.name = "trxmacro";
>
> exports.params = [
>  {name: "columns"}
> ];
>
> /*
> Run the macro
> */
> exports.run = function(columns) {
>  var ret+="|";
>  var i;
>  for(i=0; i < columns; i++) {
>  ret+=" column "+(i+1) + " |";
>  }
>  ret+="\n";
>  return ret;
> };
>
> })();
>
>
> How can I add a linebreak to the return of my macro?
>
> Thanks,
>
>

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