From 4ccdaf3fafda2f1d0766ed69c68d030a7db2bbc6 Mon Sep 17 00:00:00 2001
From: Jermolene <jeremy@jermolene.com>
Date: Thu, 3 Sep 2015 08:53:08 +0100
Subject: [PATCH] Enhance rendertiddler command with template option

---
 core/language/en-GB/Help/rendertiddler.tid |  4 ++--
 core/modules/commands/rendertiddler.js     | 10 ++++++++--
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/core/language/en-GB/Help/rendertiddler.tid b/core/language/en-GB/Help/rendertiddler.tid
index 70db526f2..60b3af0b9 100644
--- a/core/language/en-GB/Help/rendertiddler.tid
+++ b/core/language/en-GB/Help/rendertiddler.tid
@@ -1,10 +1,10 @@
 title: $:/language/Help/rendertiddler
 description: Render an individual tiddler as a specified ContentType
 
-Render an individual tiddler as a specified ContentType, defaults to `text/html` and save it to the specified filename:
+Render an individual tiddler as a specified ContentType, defaulting to `text/html` and save it to the specified filename. Optionally a template can be specified, in which case the template tiddler is rendered with the "currentTiddler" variable set to the tiddler that is being rendered (the first parameter value).
 
 ```
---rendertiddler <title> <filename> [<type>]
+--rendertiddler <title> <filename> [<type>] [<template>]
 ```
 
 By default, the filename is resolved relative to the `output` subdirectory of the edition directory. The `--output` command can be used to direct output to a different directory.
diff --git a/core/modules/commands/rendertiddler.js b/core/modules/commands/rendertiddler.js
index 388137efe..22f6c1ecc 100755
--- a/core/modules/commands/rendertiddler.js
+++ b/core/modules/commands/rendertiddler.js
@@ -32,9 +32,15 @@ Command.prototype.execute = function() {
 		path = require("path"),
 		title = this.params[0],
 		filename = path.resolve(this.commander.outputPath,this.params[1]),
-		type = this.params[2] || "text/html";
+		type = this.params[2] || "text/html",
+		template = this.params[3],
+		variables = {};
 	$tw.utils.createFileDirectories(filename);
-	fs.writeFile(filename,this.commander.wiki.renderTiddler(type,title),"utf8",function(err) {
+	if(template) {
+		variables.currentTiddler = title;
+		title = template;
+	}
+	fs.writeFile(filename,this.commander.wiki.renderTiddler(type,title,{variables: variables}),"utf8",function(err) {
 		self.callback(err);
 	});
 	return null;