```
lightningd-1 2025-10-27T11:26:04.285Z **BROKEN** plugin-bcli: bitcoin-cli exec failed: Argument list too long
```
Use -stdin to bitcoin-cli: we can then handle arguments of arbitrary length.
Fixes: https://github.com/ElementsProject/lightning/issues/8634
Changelog-Fixed: plugins: `bcli` would fail with "Argument list too long" when sending a giant tx.
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