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Issue 29628724: Issue 5521 - Restructure CMS documentation to make it easier to use and extend (Closed) Base URL: https://hg.adblockplus.org/cms
Patch Set: Created Dec. 4, 2017, 9:59 a.m.
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Index: docs/structure/filter.md
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+# Custom filters #
+
+The `filters` directory can define custom Jinja2 filters which will be available
+in all Jinja2 templates. The file name defines the filter name, e.g.
+`filters/myfilter.py` will define a filter named `myfilter`. This file should
+also contain a function called `myfilter`, this one will be called when the
+filter is invoked. For more information on Jinja2 filters see
+[official documentation](http://jinja.pocoo.org/docs/dev/api/#writing-filters).

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