- update to 1.2.3:
* Fixed issue in lexer in the same category as that of :ticket:`366` where
the regexp used to match an end tag didn't correctly organize for matching
characters surrounded by whitespace, leading to high memory / interpreter
hang if a closing tag incorrectly had a large amount of unterminated space
in it. Credit to Sebastian Chnelik for locating the issue.
* As Mako templates inherently render and directly invoke arbitrary Python
code from the template source, it is **never** appropriate to create
templates that contain untrusted input.