From 578b0f747d8cf773c0e5ba9394bcf8436d6b0a01 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Mon, 25 May 2026 21:26:31 +0300
Subject: fix(prefixed_output): add flush to prevent losing final unterminated
 line

PrefixedOutput#print buffers partial lines until a newline is received.
When the last chunk from a stream does not end with \n (common with
Open3 popen2e EOF), that chunk was discarded. Add #flush to emit the
remaining buffer with the prefix, and call it at the end of all streaming
loops in SshRunner and WireGuardSetup.
---
 lib/hyperstack/wireguard_setup.rb | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lib/hyperstack/wireguard_setup.rb')

diff --git a/lib/hyperstack/wireguard_setup.rb b/lib/hyperstack/wireguard_setup.rb
index 82a9dba..b2b7ec1 100644
--- a/lib/hyperstack/wireguard_setup.rb
+++ b/lib/hyperstack/wireguard_setup.rb
@@ -68,6 +68,7 @@ module HyperstackVM
         stdin.puts
         stdin.close
         output.each { |line| @out.print(line) }
+        @out.flush
         wait_thr.value
       end
     end
-- 
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