Add note on HTML usage of tojson filter

diff --git a/jinja2/filters.py b/jinja2/filters.py
index 05c2fc4596c105fb3cd1327c0db6b690aa8d26ee..c71d3b1dfa0a7b870394ee40d51ad3f6eb90bf35 100644 (file)
--- a/jinja2/filters.py
+++ b/jinja2/filters.py
@@ -938,6 +938,8 @@ def do_tojson(eval_ctx, value, indent=None):
     The indent parameter can be used to enable pretty printing.  Set it to
     the number of spaces that the structures should be indented with.
 
+    Note that this filter is for use in HTML contexts only.
+
     .. versionadded:: 2.9
     """
     policies = eval_ctx.environment.policies