Imprecise message "this value should be an active source, or unit"
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Key: LS-479
URL: http://dev.sourcefabric.org/browse/LS-479
Project: Liquidsoap
Issue Type: New Feature
Components: Liquidsoap
Affects Versions: 0.9.3, 0.9.1, 0.9.0
Reporter: David Baelde
That message shows up when typing but also execution. That's because we can't
know at typing time if the source is active or not, so we issue a warning and
confirm it later. The imprecision is annoying. Also, the message can show up
during streaming (and it goes to stdout), just run add_timeout(2.,{ "bla" ;
(-1.) }) in parallel with anything to see it.
That's not so important, but there may be a nice simplification behind all
this: make all outputs (....,source)->unit instead of (...source)->source. This
will make it impossible to chain them, but this style has no real advantage
besides concision, and people generally don't use it. What do you think?
Then we could issue a clearer warning (perhaps even an error) for non-ignored
values of non-unit type. The change would also make it possible to warn users
about ignored sources -- currently we can't do that because active sources are
safely ignored.
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