On 11/04/2013 12:58 PM, Erik Moeller wrote:
This was due to a broken deployment of Parsoid, the
new MediaWiki
parser used by VisualEditor. A new library dependency defaulted to
iso8859-1 instead of utf-8, which caused character munging to occur.
I have created a post-mortem at
https://wikitech.wikimedia.org/wiki/Incident_documentation/20131104-Parsoid
The most important recommendation is the creation of automated
full-stack web API tests in addition to our existing parser test and
round-trip test setups. This should catch library issues like this in
the future before deployment.
We also updated the Parsoid deploy guidelines to include manual edit
checks on non-English wikis, which will help to catch any remaining
production-specific deployment issues.
Gabriel