I moved four functions, verbatim, to a new module.
They were in message_util before, which led to
filter.js having several accidental indirect
dependencies.
I considered just putting these four functions in
filter.js, but I think it's a nice abstraction boundary
that filter.js delegates actual message parsing, and
the original author apparently had a similar thought
process.
I also wanted to make it so that a casual reader of
filter.js doesn't think we are manipulating DOM. It's
true that we still indirectly require jquery here, but
it's only for parsing, and it seems plausible we would
eventually use a more low-level parser.
I can see us maybe using these functions in something
like MessageListData in the future, so speculatively
splitting them out might future-proof us from some
cyclical dependencies.
I also think it's plausible that we will just modify
our two markdown processors to attach that kind of
metadata to the messages.
Last but not least, I think there might be opportunity
here to simplify the filter tests and remove some of
the zjquery hacks. We would instead just mock the
message_has_* helpers for the filter tests, and then
do more detailed direct testing on the functions
themselves.
Steve Howell