I tried to follow https://tiddlywiki.com/dev/ in order to create a new 
filter module plugin, but I cannot even see (with console.log) that it is 
actually use :(

What did I do wrong?

$:/plugins/skeeve/filter-pick

{
    "tiddlers": {
        "$:/plugins/skeeve/filter-pick/pick.js": {
            "created": "20180212142125038",
            "text": "/*\\\ntitle: 
$:/plugins/skeeve/filter-pick/pick.js\ntype: 
application/javascript\nmodule-type: filteroperator\n\nFilter operator for 
regexp matching and picking out capturing 
groups\n\n\\*/\n(function(){\n\n/*jslint node: true, browser: true 
*/\n/*global $tw: false */\n\"use strict\";\n\n/*\nExport our filter 
function\n*/\nexports.pick = function(source,operator,options) {\n\tvar 
results = [],\n\t\tfieldname = (operator.suffix || 
\"title\").toLowerCase(),\n\t\tregexpString, regexp, flags = \"\", 
match,\n\t\tgetFieldString = function(tiddler,title) {\n\t\t\tif(tiddler) 
{\n\t\t\t\treturn tiddler.getFieldString(fieldname);\n\t\t\t} else 
if(fieldname === \"title\") {\n\t\t\t\treturn title;\n\t\t\t} else 
{\n\t\t\t\treturn null;\n\t\t\t}\n\t\t};\n\t// Process flags and construct 
regexp\n\tregexpString = operator.operand;\n\tmatch = 
/^\\(\\?([gim]+)\\)/.exec(regexpString);\n\tif(match) {\n\t\tflags = 
match[1];\n\t\tregexpString = regexpString.substr(match[0].length);\n\t} 
else {\n\t\tmatch = /\\(\\?([gim]+)\\)$/.exec(regexpString);\n\t\tif(match) 
{\n\t\t\tflags = match[1];\n\t\t\tregexpString = 
regexpString.substr(0,regexpString.length - 
match[0].length);\n\t\t}\n\t}\n\tvar global= flags.indexOf('g') > 
-1;\n\ttry {\n\t\tregexp = new RegExp(regexpString,flags);\n\t} catch(e) 
{\n\t\treturn [\"\" + e];\n\t}\n\t// Process the incoming 
tiddlers\n\tif(operator.prefix === \"!\") 
{\n\t\tsource(function(tiddler,title) {\n\t\t\tvar text = 
getFieldString(tiddler,title);\n\t\t\tif(text !== null) 
{\n\t\t\t\tif(!regexp.exec(text)) 
{\n\t\t\t\t\tresults.push(title);\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\t} else 
{\n\t\tsource(function(tiddler,title) {\n\t\t\tvar text = 
getFieldString(tiddler,title);\n\t\t\tif(text !== null) {\n\t\t\t\tvar 
m;\n\t\t\t\twhile (m = regexp.exec(text)) {\n\t\t\t\t\tif (m.length == 1) 
{\n\t\t\t\t\t\tresults.push(title);\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t\tconsole.log(m);\n\t\t\t\t\tfor
 
(var i=1; i<m.length;++i) 
{\n\t\t\t\t\t\tresults.push(m[i]);\n\t\t\t\t\t}\n\t\t\t\t\tif ( ! global ) 
{\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\t}\n\treturn 
results;\n};\n\n})();",
            "title": "$:/plugins/skeeve/filter-pick/pick.js",
            "tags": "",
            "modified": "20180212142631802",
            "type": "application/javascript"
        }
    }
}


type: application/json

description: a filter to pick out text using regular expressions

plugin-type: plugin

version: 0.02

There is a console.log in but when I use the filter

<$list filter="pick:text[(?gi)auf der (\w+)]]">

</$list>

nothing is logged at all.


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