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fix(expert): print to stderr when no transport argument provided #280

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Merged
mhanberg merged 4 commits into from
Jan 7, 2026
Merged

fix(expert): print to stderr when no transport argument provided #280

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807b697
fix(expert): print error when no transport argument provided
badosu Dec 27, 2025
3e92a65
use status code 2 to indicate invalid cli argument
badosu Dec 27, 2025
d550fed
fatal instead of error
badosu Dec 27, 2025
77655be
Merge branch 'main' into badosu/arg_error_message
badosu Dec 27, 2025
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8 changes: 7 additions & 1 deletion apps/expert/lib/expert/application.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -59,9 +59,15 @@ defmodule Expert.Application do
[communication: {GenLSP.Communication.TCP, [port: opts[:port]]}]

true ->
IO.puts(
:stderr,
"FATAL: A transport argument (--stdio|--port <port>) must be provided, expert won't initialize."
)

IO.puts(help_text)

System.halt(1)
# Status code 2 is often used for invalid CLI argument
System.halt(2)
end

ensure_epmd_module!()
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