From 21e7613047ed72cef98162c2a732a7dc3c081250 Mon Sep 17 00:00:00 2001
From: Tomi Ollila <tomi.ollila@iki.fi>
Date: Sun, 29 Mar 2015 18:30:36 +0300
Subject: [PATCH] [PATCH] test/thread-order: more robust loop exit in case of
 broken input

---
 20/82b59ab47450c3560e24eb6c83327b3f3fa536 | 81 +++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 20/82b59ab47450c3560e24eb6c83327b3f3fa536

diff --git a/20/82b59ab47450c3560e24eb6c83327b3f3fa536 b/20/82b59ab47450c3560e24eb6c83327b3f3fa536
new file mode 100644
index 000000000..125c06299
--- /dev/null
+++ b/20/82b59ab47450c3560e24eb6c83327b3f3fa536
@@ -0,0 +1,81 @@
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+From: Tomi Ollila <tomi.ollila@iki.fi>
+To: notmuch@notmuchmail.org
+Subject: [PATCH] test/thread-order: more robust loop exit in case of broken
+	input
+Date: Sun, 29 Mar 2015 18:30:36 +0300
+Message-Id: <1427643036-7171-1-git-send-email-tomi.ollila@iki.fi>
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+Cc: tomi.ollila@iki.fi
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+
+When creating $THREADS data it may end of not having 'None' at all
+or the numbers in line output yields a loop.
+
+To avoid loop the value in current array index is set to 'None'
+so that if the same item is reached again the loop will end.
+
+Also empty string as next array index will end the loop.
+---
+
+This is v2 of id:1427310460-15801-1-git-send-email-tomi.ollila@iki.fi
+
+Tested loop termination by setting THREADS='0 0 0 0'
+
+
+ test/T260-thread-order.sh | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/test/T260-thread-order.sh b/test/T260-thread-order.sh
+index 99f5833..5239bd4 100755
+--- a/test/T260-thread-order.sh
++++ b/test/T260-thread-order.sh
+@@ -45,9 +45,12 @@ for ((n = 0; n < 4; n++)); do
+     while read -a parents; do
+         references=""
+         parent=${parents[$n]}
+-        while [[ $parent != None ]]; do
++        while [[ ${parent:-None} != None ]]; do
+             references="<m$parent@t$thread> $references"
++            pp=$parent
+             parent=${parents[$parent]}
++            # Avoid looping over broken input (if ever)
++            parents[$pp]="None"
+         done
+ 
+         generate_message \
+-- 
+2.1.0
+
-- 
2.26.2