Add suffix and removesuffix filters

core/modules/filters/removesuffix.js

@@ -0,0 +1,28 @@
+/*\
+title: $:/core/modules/filters/removesuffix.js
+type: application/javascript
+module-type: filteroperator
+
+Filter operator for removing a suffix from each title in the list. Titles that do not end with the suffix are removed.
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+/*
+Export our filter function
+*/
+exports.removesuffix = function(source,operator,options) {
+	var results = [];
+	source(function(tiddler,title) {
+		if(title.substr(-operator.operand.length).toLowerCase() === operator.operand.toLowerCase()) {
+			results.push(title.substr(operator.operand.length));
+		}
+	});
+	return results;
+};
+
+})();

core/modules/filters/suffix.js

@@ -0,0 +1,36 @@
+/*\
+title: $:/core/modules/filters/suffix.js
+type: application/javascript
+module-type: filteroperator
+
+Filter operator for checking if a title ends with a suffix
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+/*
+Export our filter function
+*/
+exports.suffix = function(source,operator,options) {
+	var results = [];
+	if(operator.prefix === "!") {
+		source(function(tiddler,title) {
+			if(title.substr(-operator.operand.length).toLowerCase() !== operator.operand.toLowerCase()) {
+				results.push(title);
+			}
+		});
+	} else {
+		source(function(tiddler,title) {
+			if(title.substr(-operator.operand.length).toLowerCase() === operator.operand.toLowerCase()) {
+				results.push(title);
+			}
+		});
+	}
+	return results;
+};
+
+})();

editions/tw5.com/tiddlers/filters/FilterOperator prefix.tid

@@ -12,4 +12,4 @@ For example:
 |`[tag[task]!prefix[hidden]]` |Returns tiddlers tagged `task` whose titles do not start with `hidden` |
 |`[prefix[$:/]]` |Equivalent to `[is[system]]` |
 
-See also [[FilterOperator: removeprefix]].
+See also [[FilterOperator: removeprefix]], [[FilterOperator: removesuffix]] and [[FilterOperator: removesuffix]].

editions/tw5.com/tiddlers/filters/FilterOperator removeprefix.tid

@@ -11,4 +11,4 @@ For example:
 |!Filter String |!Description |
 |`tid-one tid-two three +[removeprefix[tid-]]` |Returns `one`, `two` |
 
-See also [[FilterOperator: prefix]].
+See also [[FilterOperator: prefix]], [[FilterOperator: suffix]] and [[FilterOperator: removesuffix]].

editions/tw5.com/tiddlers/filters/FilterOperator removesuffix.tid

@@ -0,0 +1,14 @@
+created: 20140828133830424
+modified: 20140828133830424
+tags: filters
+title: FilterOperator: removesuffix
+type: text/vnd.tiddlywiki
+
+The ''removesuffix'' filter operator returns the titles in the current list that end with a specified suffix with the suffix removed.
+
+For example:
+
+|!Filter String |!Description |
+|`tid-one tid-two three +[removeprefix[tid-]]` |Returns `one`, `two` |
+
+See also [[FilterOperator: suffix]], [[FilterOperator: prefix]] and [[FilterOperator: removeprefix]].

editions/tw5.com/tiddlers/filters/FilterOperator suffix.tid

@@ -0,0 +1,15 @@
+created: 20140828133830424
+modified: 20140828133830424
+tags: filters
+title: FilterOperator: suffix
+type: text/vnd.tiddlywiki
+
+The ''suffix'' filter operator returns the titles in the current list that end with a specified suffix. If the ''suffix'' operator is preceded by `!` then it returns the titles that do not end with the specified suffix.
+
+For example:
+
+|!Filter String |!Description |
+|`[tag[task]!suffix[hidden]]` |Returns tiddlers tagged `task` whose titles do not end with `hidden` |
+|`[suffix[.jpg]]` |Returns tiddlers whose titles end with `.jpg` |
+
+See also [[FilterOperator: removesuffix]], [[FilterOperator: prefix]] and [[FilterOperator: removeprefix]].