From a3dc3b4b98f424d12019550df52639224100316f Mon Sep 17 00:00:00 2001
From: Jermolene <jeremy@jermolene.com>
Date: Mon, 28 Nov 2016 19:04:04 +0000
Subject: [PATCH] Add new [all[tags]] filter operator

---
 core/modules/filters/all/tags.js          | 22 ++++++++++++++++++++++
 editions/tw5.com/tiddlers/filters/all.tid | 13 +++++++------
 2 files changed, 29 insertions(+), 6 deletions(-)
 create mode 100644 core/modules/filters/all/tags.js

diff --git a/core/modules/filters/all/tags.js b/core/modules/filters/all/tags.js
new file mode 100644
index 000000000..2aaa9dec2
--- /dev/null
+++ b/core/modules/filters/all/tags.js
@@ -0,0 +1,22 @@
+/*\
+title: $:/core/modules/filters/all/tags.js
+type: application/javascript
+module-type: allfilteroperator
+
+Filter function for [all[tags]]
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+/*
+Export our filter function
+*/
+exports.tags = function(source,prefix,options) {
+	return Object.keys(options.wiki.getTagMap());
+};
+
+})();
diff --git a/editions/tw5.com/tiddlers/filters/all.tid b/editions/tw5.com/tiddlers/filters/all.tid
index f74f7f1f1..980ebb2ea 100644
--- a/editions/tw5.com/tiddlers/filters/all.tid
+++ b/editions/tw5.com/tiddlers/filters/all.tid
@@ -1,13 +1,13 @@
+caption: all
 created: 20140410103123179
-modified: 20150220160957000
+modified: 20161128185445034
+op-input: ignored, unless the parameter is empty
+op-output: the titles that belong to all the specified categories
+op-parameter: zero or more categories
+op-purpose: find all titles of a fundamental category
 tags: [[Filter Operators]] [[Common Operators]] [[Selection Constructors]]
 title: all Operator
 type: text/vnd.tiddlywiki
-caption: all
-op-purpose: find all titles of a fundamental category
-op-input: ignored, unless the parameter is empty
-op-parameter: zero or more categories
-op-output: the titles that belong to all the specified categories
 
 The parameter specifies zero or more fundamental categories using the following syntax:
 
@@ -21,6 +21,7 @@ The parameter specifies zero or more fundamental categories using the following
 |^`orphans` |all tiddlers to which there are <<.em no>> hard links |^by title |
 |^`shadows` |all the [[shadow tiddlers|ShadowTiddlers]] that exist, including any that have been overridden with non-shadow tiddlers |^no |
 |^`tiddlers` |all the non-shadow tiddlers that exist |no |
+|^`tags` |all the tags in use on non-shadow tiddlers |no |
 
 If the parameter specifies more than one category, they are processed from left to right. The overall output is initially empty, and each category's output is [[dominantly appended|Dominant Append]] to it in turn. Unrecognised categories contribute nothing to the output.