templatefilters: make json filter handle multibyte characters correctly
It aims to fix javascript error of hgweb's graph view in Japanese 'cp932'
encoding.
'cp932' contains multibyte characters ending with '\x5c' (backslash),
e.g. '\x94\x5c' for Japanese Kanji 'Noh'.
Due to json filter escapes '\' to '\\', multibyte string ending with
'\x5c' is translated to "xxx\", resulting javascript parse error on
a web browser.
This patch changes json() to pass unicode to jsonescape().
Unicode decoding error handler changed to 'replace' by Patrick Mézard.
Basic install:
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
See http://mercurial.selenic.com/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.