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Create a custom filter

Objective

This page shows you how to create a custom filter. For that, we are going to write a python script, and add it as an extension.

Our filter will convert the text passed to it to uppercase.

Write script

First step, write the script and save it somewhere. 

   1 from mercurial import templatefilters
   2 
   3 def upper(s):
   4     return s.upper()
   5 
   6 def extsetup(ui):
   7     templatefilters.filters["upper"] = upper

Add Extension

In mercurial.ini, add this script under the [extensions] section. 

[extensions]
upper = ~/.hgext/myfeature.py

(if this doesn't work, see Using Mercurial Extensions for help on configuring extensions)

Example

>hg tip --template "{author|upper}\n"
GUIDO VAN ROSSUM <BDFL@PYTHON.ORG>

TemplateFilters (last edited 2012-05-08 15:16:22 by mpm)